Delivering Advantages Across the Entire Research Organization

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1 Delivering Advantages Across the Entire Research Organization 11/13/2017

2 What We Believe It is possible to advance science and medicine while minimizing environmental impact. No compressors. No compromises. 11/13/2017 2

3 Life Science Refrigeration Landscape 11/13/2017 3

4 -80 C Product Line SU780XLE 27.5 cu. ft. 780 liter SU105U 3.7 cu. ft. 105 liter (shown stacked) Shuttle 0.9 cu. ft. 25 liter 11/13/2017 4

5 How Large is the Problem? 2015 My Green Lab Study: Market Assessment of Energy Efficient Opportunities in Laboratories Sponsored by California utilities to evaluate lab energy savings opportunities 440,000 to 890,00 (-80ºC) ULT freezers estimated in the U.S. 58,000 ULT freezers estimated in California alone Based on estimated ULT freezer energy use and electricity rates, California labs could save up to $59 million per year by replacing cascade ULT freezers with Stirling models. 11/13/2017 5

6 Ultra-Low Temperature Freezer Legacy Aging, Unreliable and Inefficient Compressor Based Technology All ultra-low freezers use compressors except Stirling Consumes as much power as a typical US household Typical ULT power use generates more than 70 tons of CO 2 over freezer s lifetime ULT freezers viewed as a necessary evil in life sciences research Universally poor reliability 11/13/2017 6

motor Integral heat reject Inherently energy efficient Continuous modulation: fully adaptive control 100% natural refrigerants Less than half the

7 ULT Technologies Overview Cascade Systems Two compressors in a cascade arrangement Temperature Control: switching compressors on and off Inherently inefficient energy use Circulates HFC refrigerant & oil Creates large carbon footprint Stirling Free-Piston Engine Integral linear motor Integral heat reject Inherently energy efficient Continuous modulation: fully adaptive control 100% natural refrigerants Less than half the carbon footprint of cascade systems Gas bearings No compressors! THERMOSIPHON COMPRESSORS INTEGRAL LINEAR MOTOR CABINET HEAT LEAK CABINET HEAT LEAK 11/13/2017 7

8 Stirling Field-Proven Technology Trusted by over 100 s of research facilities and institutions including... Academic Research Albert Einstein College of Medicine Duke University University of California (Davis & San Francisco) Case Western Reserve University Biorepositories National Cancer Institute Fred Hutchinson Cancer Center Masy Systems BioPharma Roche Diagnostics GlaxoSmithKline Boehringer Ingelheim Pharmaceuticals AbbVie Bioresearch Center Eli Lilly & Co. Government/Non-Profit Research NIH/National Cancer Institute USDA Fred Hutchinson Cancer Research Center Howard Hughes Medical Institute USAMRIID (US Army) BioTech Genentech Amgen Novartis Seattle Genetics Hospital Research Seattle Children s Research Institute Mayo Clinic Cleveland Clinic 11/13/2017 8

9 Made in the USA Stirling cooling engines and freezers are manufactured in Ohio & Kentucky Creating manufacturing jobs in a Historically Underutilized Business Zone Zero Waste certified Athens, OH manufacturing facility 11/13/2017 9

Changing the Industry Enabling lab sustainability initiatives with no compromise in ultra-low cooling performance Dramatically lowering energy use and total cost of ultra-low temperature

10 Changing the Industry Enabling lab sustainability initiatives with no compromise in ultra-low cooling performance Dramatically lowering energy use and total cost of ultra-low temperature storage Delivering award-winning technology with wide acceptance and proven reliability in the field Rapidly growing global market presence with established U.S. manufacturing 11/13/

11 Advantages Across the Organization Voltage Flexibility Reduced Infrastructure Lowest Heat Rejection Facility Manager Architect Lowest Energy Use Energy Manager Research Organization Sustainability Director Natural Refrigerants Researcher Temperature Flexibility Low Maintenance Longest Life Service Strategic Purchasing / Finance Lowest Cost of Ownership Lab Manager Highest Reliability Best Performance 11/13/

12 Think Strategically About ULT Costs What are compressor-based ULTs really costing your organization? Initial Purchase Price 28% PERCENT OF TOTAL COST (per cu. ft. per yr.) Energy Consumption Cost 39% Compressor Replacement Cost 11% HVAC Cost Impact 11% Floor Space Cost 11% Based on installed base energy use data at 16c/kWh electric costs, with typical floor space and compressor replacement cost estimates from independent sources. 11/13/

13 Advantages Across the Organization Lowest Heat Rejection Lowest Energy Use Natural Refrigerants Voltage Flexibility Reduced Infrastructure Facility Manager Architect Research Organization Researcher Temperature Flexibility Low Maintenance Longest Life Service Strategic Purchasing / Finance Lowest Cost of Ownership Lab Manager Highest Reliability Best Performance 11/13/

STAR certified ULT freezer, setting the standard and

14 FIRST ENERGY STAR Certified ULTs Since July 2017 SU780XLE upright model is the industry s FIRST ENERGY STAR certified ULT freezer, setting the standard and validating the industry s top energy-efficiency rating 11/13/

15 FIRST ENERGY STAR Certified ULTs Above screen captured from energystar.gov website on 8/14/17 11/13/

16 EPA ENERGY STAR Test Results Stirling Ultracold SU780XLE EPA Final Test Method Results (independently tested) 7.86 kwh: -75 C (24-hour test period) 6.86 kwh: -75 C (steady state period) 11/13/

17 Energy Consumption: ULT Freezers SU780UE SU780XLE 11/13/

18 EPA Approved, 100% Natural SU780UE was first ULT freezer approved for hydrocarbon refrigerants in the U.S. 10 grams of helium 90 grams of ethane Ecomate Foam Insulation Blowing Agent Zero GWP Zero ODP U.S. EPA approved Zero Waste Facility Gold certification 11/13/

19 Advantages Across the Organization Voltage Flexibility Reduced Infrastructure Lowest Heat Rejection Facility Manager Architect Lowest Energy Use Energy Manager Research Organization Sustainability Director Natural Refrigerants Temperature Flexibility Low Maintenance Longest Life Service Strategic Purchasing / Finance Lowest Cost of Ownership Highest Reliability Best Performance 11/13/

wear out gas bearings Only 2 moving parts No oil No valves Stop-start operation Continuous

20 A Reliable Answer to Compressor Failure Why Compressors Fail Stirling Solution Moving parts wear out Up to 24 moving parts to fail Oil lubrication management Compressor valves Don t wear out gas bearings Only 2 moving parts No oil No valves Stop-start operation Continuous operation with 100% adaptive control On-off operation surge currents No surge currents 11/13/

21 Industry s Best Cooling Performance Best temperature stability 100% adaptive control Largest temperature set point range: -20 to -86 C Slowest warm-up time after power loss Fastest pull down and temperature recovery 11/13/

22 Best Temperature Uniformity & Stability Steady-State Period Best Uniformity (across space) Best Stability (over time) Time (HOURS) 11/13/

23 Best Pull Down & Door Recovery Best Pull Down Best Door Recovery 6 door 1 hour intervals Time (HOURS) Time (HOURS) 11/13/

24 Industry-Leading Warranty 7-Year Warranty on the Stirling engine and thermosiphon Factory-authorized network of service centers 11/13/

Advantages Across the Organization Voltage Flexibility Reduced Infrastructure Lowest Heat Rejection Facility Manager Architect Lowest Energy Use Energy Manager Research Organization

25 Advantages Across the Organization Voltage Flexibility Reduced Infrastructure Lowest Heat Rejection Facility Manager Architect Lowest Energy Use Energy Manager Research Organization Sustainability Director Natural Refrigerants Researcher Temperature Flexibility Low Maintenance Service Lab Manager Best Performance Longest Life Lowest Cost of Ownership Highest Reliability 11/13/

Think Strategically About ULT Costs What are compressor-based ULTs really costing your organization? Initial Purchase Price 28% PERCENT OF TOTAL COST (per cu. ft. per yr.

26 Think Strategically About ULT Costs What are compressor-based ULTs really costing your organization? Initial Purchase Price 28% PERCENT OF TOTAL COST (per cu. ft. per yr.) Energy Consumption Cost 39% Compressor Replacement Cost 11% HVAC Cost Impact 11% Floor Space Cost 11% Based on installed base energy use data at 16c/kWh electric costs, with typical floor space and compressor replacement cost estimates from independent sources. 11/13/

27 Incentive Rebates Utility rebates for Stirling freezers include Pacific Gas & Electric Company San Diego Gas & Electric Seattle City Light Eversource (formerly NSTAR) Institutional rebates for Stirling freezers include Duke University Stanford University University of California Riverside University of Pennsylvania Cleveland Clinic Case Western Reserve University 11/13/

28 Advantages Across the Organization Voltage Flexibility Reduced Infrastructure Lowest Heat Rejection Lowest Energy Use Energy Manager Research Organization Sustainability Director Natural Refrigerants Researcher Temperature Flexibility Low Maintenance Longest Life Service Strategic Purchasing / Finance Lowest Cost of Ownership Lab Manager Highest Reliability Best Performance 11/13/

power and fuel Brown-out tolerant Universal voltage input 110-240V

29 Reductions in Research Facility Infrastructure Lower power use and no surge currents Less electrical infrastructure Less AC load Less backup power and fuel Brown-out tolerant Universal voltage input V auto switching 50 or 60 Hz auto switching Siting flexibility 11/13/

30 Advantages Across the Organization Voltage Flexibility Reduced Infrastructure Lowest Heat Rejection Facility Manager Architect Lowest Energy Use Energy Manager Research Organization Sustainability Director Natural Refrigerants Researcher Temperature Flexibility Low Maintenance Longest Life Strategic Purchasing / Finance Lowest Cost of Ownership Lab Manager Highest Reliability Best Performance 11/13/

31 Simple and Easily Accessible Battery backup - controls Touch screen Fan Stirling cooling engine Fan Power and control electronics Cold head insulation Power input, dry contacts Thermosiphon insulation LN 2 /CO 2 backup connection 11/13/

32 Advantages Across the Organization Voltage Flexibility Reduced Infrastructure Lowest Heat Rejection Facility Manager Architect Lowest Energy Use Energy Manager Research Organization Sustainability Director Natural Refrigerants Researcher Temperature Flexibility Low Maintenance Longest Life Service Strategic Purchasing / Finance Lowest Cost of Ownership Lab Manager Highest Reliability Best Performance 11/13/

33 What We Deliver Stirling Ultracold delivers significant benefits to all 11/13/

34 Small and Portable Ultra-Low Temperature Products

Stirling Ultracold Advantages Undercounter/stackable or portable

fail! Lightweight shuttle only 40Lbs Smallest footprint in its

personal storage 100% natural refrigerants Made in the USA,

35 Stirling Ultracold Advantages Undercounter/stackable or portable models Wide temperature range, -86 C to -20 C No compressors to fail! Lightweight shuttle only 40Lbs Smallest footprint in its class Plugs into any outlet worldwide 120V-240V 50/60hz Lockable personal storage 100% natural refrigerants Made in the USA, HUBZone certified manufacturer Operates on 12V DC power supply (Shuttle)

36 Stirling Field-Proven Technology Over 3000 Stirling Ultracold Small Products in the Field... Clinical Trials Drug Delivery Wound Care/Tissue Storage BioPharma/BioTech Government & Hospital Research

37 Shuttle Model ULT-25NE The world s only portable Ultra-Low Temperature freezer Remote Clinical Trials Biologic Drug Delivery Skin graft preservation & delivery Mobile, on site forensic DNA preservation

38 Portable ULT Storage Solutions Easily Transported Portable -86 C to -20 C Specimen Storage

39 SU105UE Compact Ultra-Low Freezer Undercounter Benchtop Stackable Personalized Ultra-Low Storage

40 Thank You! 11/13/2017

Model SU780XLE Upright Ultra-Low Temperature Freezer Use 70-75% Less Energy, with the Industry's Best

Steady-State Temperature Variation Over Time 3 Fastest Initial Pull-Down, Ambient to -80 C, <6.

Final Test Method door opening procedure) 3 Slowest Warm-Up Time, 2.

of Floor Space 3 Plugs into Any Outlet Shown with optional inventory racks and three additional shelving

Interior dimensions accommodate optional inventory racks up to five standard boxes deep.

Stirling Ultracold Model SU780XLE Storage Volume Voltage Range, Universal VWR Cat. No 780 liters (27.5 cu.ft.

advantages across your entire research organization.

cooling capacity eliminates on/ off cycling, improves quality of cold Uses 70-75% less energy than standard

control - industry s fastest temperature pull-down and recovery Uses EPA SNAP-approved 100% natural

reliability with only two moving parts - no compressors to fail!

41 Model SU780XLE Upright Ultra-Low Temperature Freezer Use 70-75% Less Energy, with the Industry's Best Ultra-Low Cooling Performance Making the Industry s Best Performing ULT Freezer Even Better 3 ± 1 C Steady-State Temperature Variation Over Time 3 Fastest Initial Pull-Down, Ambient to -80 C, <6.5 hours 3 Fastest Door Opening Temperature Recovery, 35 minutes to -80 C (when tested using the ENERGY STAR Final Test Method door opening procedure) 3 Slowest Warm-Up Time, 2.5 hours from -80 C to -60 C 3 New Ergonomic Handle and Cabinet Design 3 Largest Storage Capacity Per Sq. Ft. of Floor Space 3 Plugs into Any Outlet Shown with optional inventory racks and three additional shelving units (not included). Interior dimensions accommodate optional inventory racks up to five standard boxes deep. Removable shelves are adjustable on ½ (12.7 mm) centers. Stirling Ultracold Model SU780XLE Storage Volume Voltage Range, Universal VWR Cat. No 780 liters (27.5 cu.ft.) Operates from 100V to 240V (±10%) at either 50 or 60Hz The SU780XLE delivers strategic advantages across your entire research organization. Protecting your Sample Integrity Protecting the Environment Protecting your Operating Budget Modulated cooling capacity eliminates on/ off cycling, improves quality of cold Uses 70-75% less energy than standard compressor-based systems Reduces electric utility costs more than 70% savings in most cases 100% adaptive control - industry s fastest temperature pull-down and recovery Uses EPA SNAP-approved 100% natural refrigerants Significantly reduces heat output and HVAC cost of operations Superior Stirling engine reliability with only two moving parts - no compressors to fail! Zero Waste process and environmentallyfriendly foam insulation blowing agent used in product manufacturing Reduces floor space, facilities, infrastructure, and backup power cost Industry-best warranty seven-year engine and thermosiphon protection, two-year parts and labor coverage* SU780XLE Ultra-Low Temperature Freezer Significantly smaller operating carbon footprint than any competing product Lowest ongoing maintenance requirements and service costs 1 of 2

42 Model SU780XLE Specifications Application, Rating and Electric Data Application Storage Volume Storage Capacity Temperature Range Electric Power** Maximum Power (Current) Auto-Voltage Capability Electric Supply Rating Power Plugs Available Certification/Agency Listing Noise Indoor/Outdoor Use Application Environment Ambient Operating Temperature Useful Life Controller Interface Controller Type Storage of general (non-flammable) laboratory materials 780 liters (27.5 cu.ft.) 600 standard 2" boxes in drawer racks, optional, available separately -86ºC to 32ºC (90ºF) ambient, adjustable to 1ºC increments 100V to 240V (±10%) at either 50 or 60Hz 1200 watts (10 5 nominal 100V to 240V (±10%) at either 50 or 60Hz (automatically adjusts) 15 amp or greater grounded circuit NEMA 5-15P plug requires standard NEMA 5-15R receptacle (120V): Length: 2261mm (89 in.), or NEMA 6-15P plug requires standard NEMA 6-15R receptacle (240V): Length: 2997 mm (118in.). Specify when ordering UL, cul, CE, and ENERGY STAR Advanced noise abatement, <45 db(a) at 1 meter Indoor use only Non-corrosive, non-flammable, non-explosive +5ºC to +35ºC (41ºF to 95ºF) 12 years, nominal Graphical user interface with touchscreen controls Microprocessor with touchscreen input and display Lockable door Security Optional PIN requirement built in Warm and Cold Alarms Fully adjustable Control Sensor One RTD (PT100 Class B) Event Log All alarms, door openings Normally closed, normally open, common; Dry Contacts activated by power outage or any alarm condition Temperature Log Battery Back-up 30 days available graphically 12 hour control battery back-up for touchscreen Refrigeration System Cooling Engine Heat Transport System Refrigerant Evaporator Heat Rejection Defrost Method Performance Data Steady State Energy Use (ENERGY STAR Final Test Method) Pull-Down from 25ºC Ambient Recovery from Door Opening (ENERGY STAR Final Test Method) Warm-Up Profile Heat Dissipation Helium charged free-piston Stirling engine with continuous modulation Gravity driven thermosiphon R-170 (Ethane) 90 grams Cold wall (inner liner) Finned heat exchanger with forced air cooling Air inlet: Above freezer door, below mechanical compartment Air outlet: Right side of top cover, upward Manual 6.86 kwh/day at -75 C (Weighted Average) 6.5 hours at -80 C (empty cabinet) 35 minutes at -80 C Dimensions and Construction Interior (H x D x W) Exterior (H x D x W) Net Weight, Two Shelves, No Load Shipping (H x D x W) Shipping Weight Insulation Gasket heater Shelves Inner Doors Options 2.5 hours to -60ºC at -80 C (empty cabinet) 6.5 hours to -40ºC at -80 C (empty cabinet) 981 BTU/h (load to HVAC) at -80 C (empty cabinet) 1542 x 705 x 740 mm (60.7 x 27.8 x 29.1 in.) 1994 x 870 x 915 mm (78.5 x 34.3 x 36 in.) 283 kg (625 lbs.) 2184 x 1092 x 1118 mm (86 x 43 x 44 in.) 327 kg (721 lbs.) High performance vacuum insulated panels and non-hfc polyurethane foam using the Ecomate environmentally friendly blowing agent User programmable duty cycle 2 stainless steel, adjustable in 12.7 mm (0.5 in.) increments 3 insulated with magnetic latches Chart recorder, CO2 and LN2 back-up systems, additional shelves, international plug(s), 4-20mA temperature output * Labor warranty coverage only available in the U.S. ** The freezer operates on nominal 120V or 240V, 50 or 60Hz AC, over a wide voltage range from 90V to 264V. There is no need for special wiring or a 20 amp breaker on a 120V line. Heat rejection is minimal. The cooling air is drawn in over the top of the door and warm air exits at the right side of the cabinet Stirling Ultracold, Global Cooling, Inc. All Rights Reserved. Global Cooling technology is manufactured under U.S. and International patents. Stirling Ultracold is a trademarks of Global Cooling, Inc. Specifications subject to change without notice. SU780XLE Ultra-Low Temperature Freezer Lit. No WREV 2 of 2

43 Technical Data Sheet Stirling Ultracold Shuttle ULT-25NE Ultra Low Temperature Freezer Stirling Ultracold, Athens, Ohio USA Model Number Stirling Ultracold ULT-25NE VWR Cat. No Specifications Application Storage Volume Storage Capacity Temperature Range Electric Power Maximum Power (Current) Auto-Voltage Capability Electric Supply Rating Power Plugs Available Separately Certification/Agency Listing Noise Indoor/Outdoor Use Application Environment Ambient Operating Temperature Application, Rating and Electric Data Storage of general (non-flammable) laboratory materials 25 liters (0.9 cu.ft.) 18 standard 2" boxes -86ºC to 32ºC (90ºF) ambient, uniformity ± 2.5 C top to bottom, adjustable in 1 C increments Presets for -86 C (default), -40 C and -20 C 120V or 240V, AC; 60Hz or 50Hz; or 12V DC from mobile source 280 watts ( V to 240V, 50 or 60 Hz 15 amp or greater grounded circuit NEMA 5-15P plug requires standard NEMA 5-15R receptacle (120V); Length: 2260 mm (89 in.), or NEMA 6-15P plug requires standard NEMA 6-15R receptacle (240V); Length: 3000 mm (118 in.) Others available upon request. Specify when ordering CE Typical of laboratory equipment Indoor use only Non-corrosive, non-flammable, non-explosive +5ºC to +35ºC (41ºF to 95ºF) Refrigeration System Cooling Engine Heat Transport System Refrigerant Evaporator Heat Rejection Defrost Method Helium charged free-piston Stirling engine with continuous modulation Gravity driven thermosiphon R-170 (Ethane) grams Cold wall (inner liner) Finned heat exchanger with forced air cooling Air inlet: Right front side of unit Air outlet: Below control panel on front of mechanical compartment Manual Controller Controller Type Microprocessor controls Security Lockable lid Warm and Cold Alarms Setpoint ± 10ºC Control Sensor One RTD (PT100 Class B) Dry Contacts Optional Performance Data -80ºC Setpoint at ambient 25ºC ± 2ºC, Empty Cabinet Pull-Down from Ambient Recovery from 1 minute lid opening 3 hours 20 minutes 30 minutes to -60ºC Warm-Up Profile Steady State Energy Use Heat Dissipation 70 minutes to -40ºC 130 minutes to -20ºC < 2.8 kwh/day 403 BTU/h (load to HVAC) Stirling Ultracold Shuttle ULT-25NE Ultra Low Temperature Freezer of 2

44 Model Number Stirling Ultracold ULT-25NE Dimensions and Construction Interior (L x W x D) Exterior (L x W x D) Net Weight, Empty Shipping Dimensions (L x W x D) Shipping Weight Insulation Gasket Header Options 332 x 221 x 340 mm (13.1 x 8.7 x 13.4 in.) x 350 x 460 mm (27.3 x 13.8 x 18.1 in.) 21 kg (46 lbs.), nominal x x mm (31 x 19 x 23 in.) 26.3 kg (58 lbs.), nominal High performance vacuum insulated panels and polyurethane foam using environmentally friendly CO 2 blowing agent User programmable duty cycle Plastic Utility Bin, AC Power Cords, Mobile Power DC Cord, Sub-Lid, Certificate of Calibration, Temperature Mapping Validation, Remote Alarm Contacts TOP 27.1" 27.3" [688.1mm] (692.5 mm) 13.0" 13.1" [320.2mm] (332 mm) 13.6" 13.8" [346.5mm] (350 mm) 8.7" 8.7" [222.2mm] (221 mm) FRONT 13.0" 13.4" [330.2mm] (340 mm) 18.3" 18.1" [464.3mm] (460 mm) SIDE 0.3" (8 [8.9mm] mm) 15.7" 13.5" [399.7mm] (343 mm) 9.0" 8.7" [228.6mm] (220 mm) 2016 Stirling Ultracold, Global Cooling, Inc. All Rights Reserved. Global Cooling technology is manufactured under U.S. and International patents. Stirling Ultracold is a trademarks of Global Cooling, Inc. Specifications subject to change without notice Lit. No. XXXXX Stirling Ultracold Shuttle ULT-25NE Ultra Low Temperature Freezer of Stirling Ultracold OW /16

FSTC Equipment Test Report Purpose of Testing The Stirling Ultracold SU780XLE freezer was tested to characterize its energy usage and temperature stability during periods of both idle and door

This testing was conducted as per the ENERGY STAR Program Requirements Product Specification for Laboratory Grade Refrigerators and Freezers, and Ultra-Low Temperature Freezers Final Test Method.

95 Refrigerant R170 Test Results Test Condition ( C) -80-70 Door Test Cabinet Temperature ( C) -80.2-69.6 Energy Test Cabinet Temperature ( C) -80.4-69.

9) Energy Consumption including 6 door openings (kwh/day) 8.72 6.96 Energy Consumption without door openings (kwh/day) 7.58 6.

0 inches above the ground and Tb is at a height of 37.5 inches above the ground. Temperature Uniformity Starting with first door opening Test Condition ( C) -80-70 Test Uniformity ( C) b 14.4 13.

46 FSTC Equipment Test Report Purpose of Testing The Stirling Ultracold SU780XLE freezer was tested to characterize its energy usage and temperature stability during periods of both idle and door openings (for a 6 hour period). This testing was conducted as per the ENERGY STAR Program Requirements Product Specification for Laboratory Grade Refrigerators and Freezers, and Ultra-Low Temperature Freezers Final Test Method. Appliance Details Measured Interior Volume (ft 3 ) 27.5 Number of Compartments 3 Voltage (V) 120 Measured Input Rate (W) 901 Power Factor 0.95 Refrigerant R170 Test Results Test Condition ( C) Door Test Cabinet Temperature ( C) Energy Test Cabinet Temperature ( C) Ambient Temperature ( C) dry bulb (T a, T b) a (24.0, 23.7) (24.2, 24.0) Ambient Temperature ( C) wet bulb (T a, T b ) (18.5, 17.7) (18.4, 17.9) Energy Consumption including 6 door openings (kwh/day) Energy Consumption without door openings (kwh/day) Weighted Average Energy Consumption at -75 C Including 6 door openings (kwh/day) 7.86 Without door openings (kwh/day) 6.86 a Ta is at a height of 85.0 inches above the ground and Tb is at a height of 37.5 inches above the ground. Temperature Uniformity Starting with first door opening Test Condition ( C) Test Uniformity ( C) b Test Stability ( C) c Maximum temperature ( C) Minimum temperature ( C) Peak Variance ( C) b The average difference between the maximum and minimum temperature in the cabinet. c The average stability (Tmax Tmin) for each location. Temperature Uniformity 3h after last door opening Test Condition ( C) Nameplate Information: Test Uniformity ( C) b Test Stability ( C) c Maximum temperature ( C) Minimum temperature ( C) Peak Variance ( C) Stirling SU780XLE Ultra-Low Temperature Freezer FSTC Report # R Alcosta Blvd. Suite 101, San Ramon, CA P: F: Page 6 of 12

47 ENERGY STAR Program Requirements Product Specification for Laboratory Grade Refrigerators and Freezers, and Ultra-Low Temperature Freezers Final Test Method 1 OVERVIEW The following test method shall be used for determining product compliance with requirements in the ENERGY STAR Eligibility Criteria for Laboratory Grade Refrigerators (LGR) and Freezers (LGF), and Ultra-Low Temperature Freezers (ULT). 2 APPLICABILITY ENERGY STAR test requirements are dependent upon the feature set of the product under evaluation. The following guidelines shall be used to determine the applicability of each section of this document This test method is applicable to LGRs, LGFs, and ULTs as established in the ENERGY STAR Eligibility Criteria. This test method is not applicable to portable laboratory refrigerators and freezers, explosion proof refrigerators and freezers, chromatography refrigerators and freezers, and walk-in laboratory refrigerators and freezers. 3 DEFINITIONS Unless otherwise specified, all terms used in this document are consistent with the definitions in the ENERGY STAR eligibility criteria for laboratory grade refrigerators and freezers. A) Additional Terms: 1) Cabinet Temperature: The average of all temperature measurements taken inside a product s cabinet at any given time. 2) Defrost terms: a) Automatic Defrost: A system in which the defrost cycle is automatically initiated and terminated, with resumption of normal refrigeration at the conclusion of the defrost operation. The defrost water is removed using a means that requires no user action (e.g., built-in drainage or natural evaporation). b) Manual Defrost: A system in which the defrost cycle is initiated and terminated manually by the user. c) Semi-Automatic Defrost: A system in which the defrost cycle is manually initiated and automatically terminated, with automatic resumption of the normal refrigeration cycle at the conclusion of the defrost operation. 3) Peak Variance: The difference between the maximum and minimum temperatures measured across all temperature measurement devices (TMD) over the course of a given measurement period. 4) Refrigeration Cycle: The period of time starting when a unit s refrigeration system turns on, through the time it turns off, and ending when the refrigeration system turns on again. ENERGY STAR Program Requirements for Lab Refrigerators and Freezers - Final Test Method ( July 2014) Page 1 of 8

48 5) Stability: The difference between the maximum and minimum temperature measured by an individual TMD over the course of the entire test period. 6) Test: A 24-hour period over which measurements are taken and energy use evaluated under one set of conditions after the pull down period occurs as described in this test procedure. 7) Uniformity: The difference between the maximum and minimum temperature measured inside of a unit s cabinet at any given time. B) Acronyms: 1) AHAM: Association of Home Appliance Manufacturers 2) ANSI: American National Standards Institute 3) LGF: Laboratory Grade Freezer 4) LGR: Laboratory Grade Refrigerator 5) NIST: National Institute of Standards and Technology 6) TMD: Temperature Measurement Device 7) ULT: Ultra-Low Temperature Laboratory Freezer 8) UUT: Unit Under Test 4 TEST CONDITIONS A) Power Supply: The power supply shall be maintained at the rated voltage ± 4.0 percent and rated frequency ± 1 percent. For units rated to operate at multiple voltages, test the unit at the lowest voltage included in the rating. The actual voltage and power factor shall be measured and reported at the product service connection with the refrigeration system in operation (for units with multiple compressors, with all compressor motors in operation). B) Ambient Conditions: 1) Dry-bulb Temperature: The average test-room dry-bulb temperature shall be 24.0 ⁰C ± 1.0 ⁰C (75.2 ⁰F ± 1.8 ⁰F), when measured in accordance with Section 5 of this test procedure. 2) Wet-bulb Temperature: The test-room wet-bulb temperature shall be 18.0 ⁰C ± 1.0 ⁰C (64.4 ⁰F ± 1.8 ⁰F), when measured in accordance with Section 5 of this test procedure. 3) Dry-bulb Temperature Gradient: The dry-bulb temperature gradient shall be less than 2.0 ⁰C per m (1.0 ⁰F per foot) from 2 inches above the floor or supporting platform to a height 30.5 cm (1.0 ft) above the top of the cabinet. 4) Air Currents: Test room air currents across the door opening shall not exceed 0.25 meters per second (49 feet per minute) as measured at T B. No external air drafts shall blow directly into the refrigerated zone. C) Instrument Requirements: 1) Electrical energy measurements shall be made with instruments accurate to ± 2 percent of the quantity measured. 2) Accuracy of all temperature measurements shall be within ± 0.8 C (± 1.4 F) of the measured value. 3) Time measurements shall be made with an accuracy of ± 0.5 percent of the time period being measured. 4) Air velocity shall be measured with an instrument having an accuracy of ± 10 percent. ENERGY STAR Program Requirements for Lab Refrigerators and Freezers - Final Test Method (July 2014) Page 2 of 8

49 5 TEST SETUP A) Volume Measurements: The volume of each covered LGR, LGF, or ULT shall be determined using the methodology set forth in ANSI/AHAM HRF Computer-aided design (CAD) models can be used to determine the useable volume, as long as the drawings allow measurements and calculations to be made based on the volume measurement requirements specified in ANSI/AHAM HRF B) UUT Configuration: The cabinet with its refrigerating mechanism shall be assembled and set up in accordance with the printed instructions supplied with the cabinet. All packing materials and skid boards shall be removed. Outer door gaskets shall be checked for adequacy of seal to the cabinet and adjusted, if required. Built-in containers, covers, and shelves shall not be removed. Unless otherwise specified, the following conditions apply: 1) Any operational mode that reduces energy usage during energy consumption testing and not during normal usage shall be disabled for energy consumption testing. C) UUT Location: The space between the back of the cabinet and a vertical surface (the test room wall or simulated wall) shall be the minimum distance in accordance with the manufacturer's instructions. 1) For pass-thru units, the UUT shall be placed in a way that allows both doors to be fully opened. D) Accessories: All accessories that come standard with the unit, as-shipped, and that consume energy shall be installed and used as recommended by the manufacturer. 1) All manually controlled accessories that come standard with the equipment shall be installed and turned ON and set to the most energy consumptive setting during testing. E) Ambient Temperatures: The ambient temperatures shall be measured at the following locations 1) For Upright UUTs: Ambient temperature measurements shall be made at two locations, T A and T B, in front of the UUT along a vertical line at the centerline of the UUT. The ambient measurement line extends from a point, T A, which is 150 mm ± 50 mm (5.9 in. ± 2 in.) above the highest point on the UUT, down to the geometric center of the door opening, T B. If there are multiple outer doors, T B shall be at the geometric center of all door openings. Both points are located 915 mm ± 15 mm (36 in. ± 2 in.) out from the door opening. 2) For Chest-type UUTs: Ambient temperature measurements shall be made at two locations, T A and T B, above the UUT along a horizontal line at the centerline of the UUT in the door s longest dimension (either width or depth). T A shall be placed 150 mm ± 50 mm (5.9 in. ± 2 in.) away from the door edge farthest along the door s centerline. T B shall be placed at the geometric center of the door opening.both points shall be located 915 mm ± 15 mm (36 in. ± 2 in.) above the door opening. 3) For pass-thru UUTs, the ambient temperature shall be measured only on the side of the door opened during testing. 4) If the placement of a TMD at either T A or T B interferes with the opening of the unit s door, the TMD shall be moved away from the UUT, perpendicular to the plane of the door opening, until it no longer interferes with the door opening. F) Temperature Measurement Devices: 1) Weighting: TMDs shall be placed inside a sealable plastic container (such as polyethylene) between 2-5 milliliters in volume and filled with any natural or artificial sponge material that is saturated with a heat transfer solution consisting of a 50/50 ± 2% mixture (by volume) of propylene glycol and distilled water. The temperature shall be measured as closely as possible to the volumetric center of the container. TMDs shall be routed into the cabinet using an access port whenever possible. 2) TMD Locations (Upright UUTs): TMDs shall be placed in 3 separate planes, one located 3 in. ± 1 in. from the top of the UUT, one 3 in. ± 1 in. from the bottom of the UUT, and one at the geometric center of the UUT. TMDs shall be placed in the geometric center and 3 in. ± 1 in. diagonally from two opposite corners of each plane (3 sensors per plane). ENERGY STAR Program Requirements for Lab Refrigerators and Freezers - Final Test Method (July 2014) Page 3 of 8

a. If the location of any TMD interferes with any hardware built into the UUT, move that plane of TMDs along the height of the UUT until the TMDs are at least 2 inches away from the hardware. b. If the UUT has inner doors, and a compartment created by the inner doors does not contain at least one TMD, place at least one TMD 3 in.

50 a. If the location of any TMD interferes with any hardware built into the UUT, move that plane of TMDs along the height of the UUT until the TMDs are at least 2 inches away from the hardware. b. If the UUT has inner doors, and a compartment created by the inner doors does not contain at least one TMD, place at least one TMD 3 in. ± 1 in. above the geometric center of the bottom of that compartment. Figure 1. TMD Locations for Upright UUTs 3) TMD Locations (Chest UUTs): TMDs shall be located in planes 3 in. ± 1 in. from the left end, 3 in. ± 1 in. from the right end, and at the geometric center of the width of the unit. At each location, TMDs shall be placed in the geometric center of each plane and 5 in. ± 1 in. diagonally from two opposite corners of each plane (3 sensors per plane). a. If the location of any TMD interferes with any hardware built into the UUT, move that plane of TMDs along the width of the UUT until the TMDs are at least 2 inches away from the hardware. b. If the UUT has multiple inner compartments, and one (or more) does not contain at least one TMD, place at least one TMD in the geometric center of each empty compartment. ENERGY STAR Program Requirements for Lab Refrigerators and Freezers - Final Test Method (July 2014) Page 4 of 8

Figure 2. TMD Locations for Chest UUTs 6 TEST METHODOLOGY FOR ALL PRODUCTS 6.1 General Principles A) Measurements: 1) The following data shall be measured and reported at the beginning of the test: a.

51 Figure 2. TMD Locations for Chest UUTs 6 TEST METHODOLOGY FOR ALL PRODUCTS 6.1 General Principles A) Measurements: 1) The following data shall be measured and reported at the beginning of the test: a. Air velocity across the face of the door opening measured at point T B. 2) The following data shall be recorded at one-minute intervals during the test: a. Time: The time elapsed from the beginning of the test. b. Temperature recorded by each TMD in the cabinet. c. Dry bulb temperature at points T A and T B. d. Wet bulb temperature at points T A and T B. B) Cabinet Temperature Requirements: UUTs shall be calibrated so that the average of all Cabinet Temperature measurements, as defined in Section 3, over the course of the entire test period falls within the following ranges based on product type: Table 1. Cabinet Temperature Requirements Product Type Cabinet Temperature and Acceptable Tolerance (⁰C) LGR 4 ± 1-20 C LGF -20 ± 1-30 C LGF -30 ± 1-40 C LGF -40 ± 1 ULT -70 ± ± 1.5 ENERGY STAR Program Requirements for Lab Refrigerators and Freezers - Final Test Method (July 2014) Page 5 of 8

52 6.2 1) ULTs shall be tested at both -70 C and -80 C. 2) Non-ULT products that are capable of operating at multiple temperatures shall be tested at the lowest temperature listed in Table 1 at which the product is capable of operating. Door Opening Requirements A) Doors shall be opened as follows: 1) For UUTs with swinging doors: If the UUT does not have inner doors, the main door shall be opened to an angle of 90 degrees ± 10 degrees (relative to the closed-door position). If the UUT has inner doors, inner doors shall be opened to an angle of 90 degrees ± 10 degrees, and the main door shall be opened to an angle of 90 degrees ± 10 degrees or to the smallest angle that will allow inner doors to be opened to an angle of 90 degrees ± 10 degrees, whichever is largest. 2) For UUTs with sliding doors: Doors shall be opened as far as possible. 3) For UUTs with multiple outer doors: Only one outer door shall be opened at each door opening, and the largest shall be used for all door openings during a test. a. For units with multiple doors of the same size, use the uppermost or rightmost door available depending on the unit s configuration. b. For pass-thru UUTs, the door used for each opening shall be on the side of the UUT with TMDs for measuring the ambient temperature. B) For Refrigerators: The UUT s door(s) shall be opened a total of 24 times during the test three times per hour, every 20 minutes, for eight consecutive hours. 1) If the UUT has inner doors: a. Open the outer door, as specified in Section 6.2.3), at a constant rate over a period of two seconds. b. Open only the largest inner door at a constant rate over a period of two seconds. If more than one door is the same size, open the uppermost one of those doors (for upright freezers) or the rightmost one of the doors (for chest freezers). c. Leave doors open for 15 seconds. d. Close inner door at a constant rate over a period of two seconds. e. Close outer door at a constant rate over a period of two seconds. 2) If the UUT does not have inner doors: a. Open the outer door, as specified in Section 6.2.3), at a constant rate over a period of two seconds. b. Leave door open for 15 seconds. c. Close outer door at a constant rate over a period of two seconds. C) For Freezers and ULTs: The UUT s door(s) shall be opened a total of six times during the test once per hour, every 60 minutes, for a period of six consecutive hours. 2) If the UUT has inner doors: a. Open the outer door, as specified in Section 6.2.3), at a constant rate over a period of two seconds. b. Open only the largest inner door at a constant rate over a period of two seconds. If more than one door is the same size, open the uppermost one of those doors (for upright freezers) or the rightmost one of the doors (for chest freezers). c. Leave doors open for 15 seconds. ENERGY STAR Program Requirements for Lab Refrigerators and Freezers - Final Test Method (July 2014) Page 6 of 8

53 6.3 d. Close inner door at a constant rate over a period of two seconds. e. Close outer door at a constant rate over a period of two seconds. 3) If the UUT does not have inner doors: a. Open the outer door, as specified in Section 6.2.3), at a constant rate over a period of two seconds. b. Leave door open for 15 seconds. c. Close outer door at a constant rate over a period of two seconds. Energy Consumption Test A) UUT Pull Down: The UUT shall be plugged in and turned on and the controls adjusted to ensure the UUT begins cooling to the appropriate Cabinet Temperature specified in Table 1. Prior to testing, the UUT shall be operated until the average of all Cabinet Temperatures measured during each of two periods separated by at least three hours lies within the Cabinet Temperature requirements, as specified in Table 1. The measurement periods are as follows: 1) For units that do not cycle, each measurement period shall be two hours. 2) For units that do cycle, each measurement period shall comprise a number of complete, repetitive compressor cycles occurring through a period of no less than two hours. B) Test Periods: The test period shall be performed as described below based on the UUT s as-shipped defrost setting, after completion of the pull down period. Door openings, as specified in Section 6.2, shall begin three hours after the start of a defrost period, if one occurs. Otherwise they must start at the beginning of the 24-hour period. 1) LGRs or LGFs with No Defrost, Manual Defrost, or Semi-Automatic Defrost: The test period shall be 24 hours with no defrost. 2) LGRs or LGFs with Automatic Defrost: The test period shall be 24 hours starting at the beginning of a defrost period. 3) ULTs: The test period shall be 24 hours. 7 REPORTING A) Cabinet Volume: The cabinet volume measured in Section 5.A shall be reported in cubic feet. B) Test Cabinet Temperature: The average Cabinet Temperature measured during the entire 24-hour test period shall be reported. C) Ambient Temperature: The average dry-bulb and wet-bulb temperatures measured at locations T A and T B shall be reported for the entire 24-hour test period. D) Power Factor: The average power factor over the course of a specified period, based on unit type, shall be reported. 1) For units that cycle, the average power factor measured during compressor on periods over the duration of the test. 2) For units that do not cycle, the average power factor measured over the duration of the test. E) The following values shall be calculated and reported for two three hour periods during the test. The first period shall begin when the first door opening occurs. The second shall begin three hours after the last door opening occurs. 1) Test Uniformity: The cabinet Uniformity shall be calculated for the specified periods and reported by taking the average of the Uniformities calculated for each individual measurement. ENERGY STAR Program Requirements for Lab Refrigerators and Freezers - Final Test Method (July 2014) Page 7 of 8

54 2) Test Stability: The cabinet Stability shall be calculated for the specified periods and reported by taking the average of the Stabilities calculated for each TMD. 3) The maximum and minimum measured temperatures and the Peak Variance measured across all TMDs. F) Accessories: A list of the accessories installed prior to testing. G) Energy Consumption: 1) For LGRs and LRFs: a. The total energy consumption measured during the 24-hour test period shall be reported, in kwh/day. b. The total energy consumption measured during the steady state portion of the test period, which starts one hour after the final door opening occurs, in kwh/day. 2) For ULTs: a. The total energy consumption measured during the 24-hour test period at both Cabinet Temperatures (as noted in Table 1) shall be reported, in kwh/day. b. The total energy consumption measured during the steady state portion of the test period, which starts one hour after the final door opening occurs, at both Cabinet Temperatures, in kwh/day. c. In addition, the energy consumption per day, in kwh/day, at Cabinet Temperature of -75 C shall be calculated and reported as the weighted average of the test results at -70 C and - 80 C, as follows: Where: Equation 1. ULT Energy Consumption Calculation [( ) ( ) ( ) ] T1 = Overall average of all recorded interior temperature measurements over the course of the test at -70 C test condition. T2 = Overall average of all recorded interior temperature measurements over the course of the test at -80 C test condition. E1 = Total energy consumption during the test at -70 C test condition. E2 = Total energy consumption during the test at -80 C test condition. 8 REFERENCES A) AHAM AHAM HRF , Energy and Internal Volume of Refrigerating Appliances. Washington, DC: Association of Home Appliance Manufacturers. ENERGY STAR Program Requirements for Lab Refrigerators and Freezers - Final Test Method (July 2014) Page 8 of 8

FSTC Equipment Test Report

FSTC Equipment Test Report Purpose of Testing The Stirling Ultracold SU780XLE freezer was tested to characterize its energy usage and temperature stability during periods of both idle and door openings