COMPANY Presentation Focus on SANDEN Environmental Solutions Liste de diffusion Top management General Manager Manager Manager de Tout le proximité monde
SANDEN Group Worldwild specialist in heating and cooling technologies 54 implantations 23 countries 19 000 employees 2,300 M turnover with 61% outside Japan Automotive air conditioning (N 2 worldwide) Commercial refrigeration & vending machine (1st worldwide vending) Thermal comfort & others (including JV)
SANDEN Environmental Solutions, New entity of SANDEN Group New branch of SANDEN International Europe Ltd 2 main activities : Sales & Marketing Advanced product management 10 employees, 17 employees in 2016 Activity area:
Why CO2?
Why CO2? Most of refrigerants commonly used in thermodynamics are chemical fluids called F-Gases that have a strong global warming potential (GWP). => Growing restrictions coming from Regulation authorities
Why CO2? Ø A unique know-how offering a high energy efficiency a SANDEN group is the wordwide CO2 compressor leader a CO2 SANDEN Technology is used in Japan in the thermal comfort and commercial refrigeration areas a SANDEN is the pionnier in Europe for CO2 heat pumps and vending machines.
Natural refrigerant R744 (CO2) Refrigerant characteristics
Natural refrigerant R744 (CO2) CO2 for which applications? What are the advantages of the CO2 for Domestic Hot Water Heat pump? What is the state of progress in this area? What are the advantages of the CO2 for commercial refrigeration? What is the state of progress in this area?
Natural refrigerant R744 (CO2) CO2 for which applications? Most of heating and cooling systems: automotive climatisation, beverage coolers, refrigerated display, cold stores Extremely efficient for domestic water heating. That explains the "EcoCute" Japanese heat pump success, which can be combined to space heating. For instance, more than 450.000 units of EcoCute are installed per year in Japan (more than 5 millions since 2000).
Natural refrigerant R744 (CO2) Applications Japanese Ecocute SANDEN Ecocute Installation Outdoor Heat Capacity 4.5 kw Tank Capacity 370 Liters Water T 55 to 85 C Water Quality Soft
Natural refrigerant R744 (CO2) What are the main advantages of the CO2 for Domestic Hot Water Heat pump? Ø High performance under a wide range of climatic conditions (-20 C to 43 C) Allows to draw calories from outside all year long : no impact on the space heating consumption and comfort. Ø Ø COP is 40% higher than all R134a DHW thermodynamic solutions High density of CO2 and high specific heat capacity : Thermodynamic loop compactness Ø High level of temperature (>65 C) : direct and fast hot water availability, tank compactness and bacteria removing Ø Ø Ecologic and unrestrainedly for the end of life of refrigerant Ø System is 100% hermetic: no leak and no need of refill
Natural refrigerant R744 (CO2) Domestic Hot Water application T CO2 offers a temperature glide which very interesting for Domestic Hot Water production Example: for air temperature at 7 C and water at 52 C CO2 (HP ~100 bar and LP ~35 bar) versus R134a (HP~30 bar and LP~3 bar). Compression rate : 3 time lower! Lower consumption and higher life time duration
Natural refrigerant R744 (CO2) Domestic Hot Water application Large range of conditions due to CO2 usage and the Inverter technology
Case study 65 C DHW with CO2 Water inlet 10 C Water inlet 25 C Water inlet 35 C Water inlet 45 C
Development : Adaptation Japan Split type Installation Outdoor Tank volume 370L Constant 1 block -2 Modules Indoor 150L up to 750L Variable Heating capacity Soft water Hard water To prevent condensation Gas cooler for hot water 230V inverter technology To adopt EU standard France
Heat pump unit for residential market
Heat pump: inside DC Brushless motor Fan & motor ElectronicEvaporator (Fin & tube) Expansion valve thermistor CO2 compressor Internal heat exchanger (Double tube) thermistor Water line Pressure switch Circulation pump thermistor Gas cooler (Double tube) thermistor Inverter
CO2 SANDEN Inverter compressor Electronic XV
CO2 SANDEN Inverter compressor Increasing the Seasonal COP by using Scroll and Inverter Leakage Leakage Scroll: Best volumetric efficiency Best efficiency on a large scale of rotation speed
CO2 SANDEN Gas Cooler Specifications Outside tube Inside tube1 Inside tube2 Material Diameter Copper tube 12.7mm Copper tube 5.3mm Copper tube 3.1mm Refrigerant 20.55MPa Pressure resistance Destructive pressure 29.4MPa Water 0.45MPa 0.98MPa Thickness 0.8mm 0.6mm 0.5mm Double wall type
CO2 SANDEN Gas Cooler and Scaling concern SANDEN and KOBELCO (one of the worldwide leader in copper industry ) have developed and patented a specifique material which avoid tartar to stick inside the gas cooler Diameter of the gas cooler changes according to the risk of scaling : the inside diameter of the exchanger is larger where the water tempertare is higher.
Scaling and SANDEN tests SANDEN has developped a specific bench testing to be able to accelerate scaling in labs for different gas cooler types (SANDEN and competitors).
Scaling and preventive maintenance In case of water hardeness more than 15 F, a preventive yearly maintenance is recommended. When water hardeness is higher than 30 F, we recommend to install a softener
SANDEN Fan SANDEN Original Fan for Evaporator with variable speed Sirocco type fan
Fan Motor& Electronic XV DC Brushless motor for Evaporator fan Specifications
Variable speed water pump Caned PM motor (with high suction lift) Ø With built-in circuit DC282V Ø PWM Low-noise, high efficiency Ø Long operating life Ø Motor is molded with balk molding compound (BMC). BMC prevents the inner circuit board from being exposed by water. O-ring Pump casing A Rotor with impeller Pump casing B Stator Canned motor pumps are characterized by a compact, integrated unit without mechanical seal.
SANDEN evaporator Evaporator Distribution design to improve evaporator efficiency (increase COP and reduction of Defrosting loss) Specifications
Internal view Motor fan Compressor Evaporator Water Pump Gas cooler
Stratification tests for all tanks Stratification improvement
Main Specifications of SANDEN Sanitary hot water Heat Pump Aquaeco2 Air to Water Heat Pump Heat Capacity : Max 4.5 kw Indoor Installation. Dimensions 680x780x950 mm Sanitary hot water application Power supply: 230V, 16A, 50-60 HZ Residential and commercial usage (Dwellings, restaurants, farms, etc.) Sanitary Water tank size from 150 to 750 litres for one heat pump Tank should have special water connections for the Heat pump (outlet in the bottom of tank and outlet from top). Check tank specifications document from SANDEN. Heat Pump heats directly sanitary water from the tank (no refrigerant connection between Heat pump and tank) Hot water Temperature setpoint: +65 C in all conditions
Aquaeco2 COP COP vs air and water inlet temperature (for water outlet at 65 C)
Aquaeco2 COP COP vs air and water inlet temperature (for water outlet at 65 C)
Aquaeco2: specifications & installation
Aquaeco2: specifications & installation Installation: Electrical connection without thermostat (HP operation using timer only) Ø Electrical connection if using thermostat on tank
Aquaeco2: specifications & installation
Aquaeco2: specifications & installation
Aquaeco2: specifications & installation
Aquaeco2: specifications & installation
Aquaeco2: specifications & installation Water network pressure: between 1 and 6 bar
Comparison study Solar Thermal and Aquaeco2 heat pump
Solar thermal data - Solar panel: ROTEX Solaris V26P - Opening surface: 2,35 m2 - B Coefficient (Optical efficiency) : 0,8 - Coefficient K (Heat loss): 4,86 W/m2. C - Inclination :45 for annual usage Inclination: 30 for summer season usage - Orientation: South 0
Données Aquaeco2 - Average annual COP*: 3.0 (66,6 % free energy) - COP is 4.2 for summer usage * ( 76,2 % free energy) - Defrost cycle included - 65 C water direct production - Tank volume is 100 % of the daily consumption. - Tank heat loss is 0,084 Wh/j.l. C - No additional electric heater (Tmin = -15 C)
Solar / Aquaeco2 equivalence Aquaeco2 / Solar thermal panel surface equivalence Location Rennes (France), Solar panel ROTEX V26P inclination 45, South 0, Storage at 65 C All year usage 100 95 90 85 300 l/d COP COP = = 33 80 75 70 65 400 l/d 500 l/d 600 l/d 700 l/d 800 l/d Ø Example in Rennes: - 700 l/day to produce (15 939 kwh/year) - 31 m2 of solar panels or - 1 Aquaeco2 60 55 50 m2
Solar / Aquaeco2 equivalence Aquaeco2 / Solar thermal panel surface equivalence Location Madrid (Spain), Solar panel ROTEX V26P inclination 45, South 0, Storage at 65 C All year usage 100 95 90 85 80 COP = 3 COP = 3 75 70 300 l/d 400 l/d 500 l/d 600 l/d 700 l/d 800 l/d Ø Example in Madrid: - 700 l/day at 65 C à produire (15 168 kwh/year) - 17 m2 of solar panels or - 1 Aquaeco2 65 60 55 50 m2
Solar / Aquaeco2 equivalence Aquaeco2 / Solar thermal panel surface equivalence Location Rennes (France), solar panel ROTEX V26P inclination 30, South 0, storage at 65 C usage from may to september 120 110 100 90 COP = 3 300 l/d 400 ldj 500 l/d 600 l/d 700 l/d 800 l/d Ø Example in Rennes: - 700 l/day to produce (6370 kwh/year) COP = 4,2 80-17 m2 of solar panels or - 1 Aquaeco2 70 60 m2
Solar / Aquaeco2 equivalence Aquaeco2 / Solar thermal panel surface equivalence Location Madrid (Sp), solar panel ROTEX V26P inclination 30, South 0, storage at 65 C Usage from may to september 120 110 300 l/d 100 90 COP = 4,2 80 400 l/d 500 l/d600 l/jd 700 l/d 800 l/d Ø Example in Madrid: - 700 l/day at 65 C à produire (5929 kwh/year) - 13 m2 of solar panels or - 1 Aquaeco2 70 60 m2
Aquaeco2 Professionnal applications
Restaurants - Hot water consumption: from 1 liter (at 60 C) per client in a fast-food to 20 liters in a luxury restaurant. 12 liters per client and per day is good approximation for a first study in a standard restaurant. - The hot water system provides the service of hot water to clean hands, wash dishes and equipment, and food preparation. Pizzeria Del Arte Rennes, The use varies throughout the day, but peaks France typically during the lunch and dinner rush and 72 meals served per day on for the end-of-day cleaning of the facility. average Traditional restaurant (12 liters/meal/day) 46 for lunch + 26 for dinner Meals served (lunch and dinner) 30 60 90 120 150 180 65 C hot water needs: Required configuration One Aquaeco2 max Two Aquaeco2 max Required tank size 300 l 450 750 l 1050 l* 1150 l* 1500 l* 502L in day shift + 283L in 3 3 65 C water to produce / year 120 m 680 m evening shift Yearly needs: 264 m3 of 65 C hot Mass catering and fast-food (5 liters/meal/day) Meals served (lunch and dinner) water 100 150 200 250 300 350 Required configuration One Aquaeco2 max Two Aquaeco2 max 1 Aquaeco2 Max unit + 450L tank Required tank size 450 l 750 l 750 l 1050 l* 1150 l* 1500 l* 18,297 kwh produced per year 3 65 C water to produce / year 550 m 160 5,718 kwh consumed per year
Dairy farms - Water heating accounts for 25% to 35% of overall energy demand of dairy farming. - Hot water temperature is used for: - 65 C hot water for milking equipment cleaning - 35 C warm water for household use purpose - Lukewarm water (combination of storage tank water mixed with cold water) as drinking water for cows and calves during winter time and in milk powder preparation for calf feeding. 84 dairy cows 730,000L milk Most dairy farms use an electric water heater, produced/year though it is one of the most costly ways to produce 590L of 65 C hot water needed hot water. daily One Aquaeco2 Max unit + 300L tank installed Dairy cows numbers 40 80 120 160 200 240 Heating operation: 7h30 per day Two Aquaeco2 max Required configuration One Aquaeco2 max Only 4,693 kwh electric energy Required tank size 200 l 300 l 750 l 300 l 450 l 750 l consumed per year (Vs 13,752 65 C water to produce / year 120 m 560 m kwh with electric boiler) 3 3
Hair dressing - Hot water is mainly used for shampoo, for rinsing, hair care and coloration. A part of the consumption also comes for the daily cleaning of floors and equipment. - Six showers a day: this is the volume of hot water used each day par hairdresser. - The average volume of 37 C for each customer is around 22 liters. - One hairdresser takes care of a number a customer between 12 and 17 a day Hairdressing salon in Paris Staff member: 8 Number of customers /year 5000 10000 15000 20000 25000 21500 customers / year or numbers of haidressers 2 or 3 4 or 5 6 or 7 8 to 10 11 to 13 Hot water needs for hair purpose Number of Aquaeco 1 2 and floor cleaning Required tank size 200 l 300 l 450 l 750 l 1050 l Yearly needs: 230 m3 of 65 C hot 3 average 65 C water to produce / year 270 m 54 m3 water Equipped with 1 Aquaeco2 with one 750 l tanks. 14,789kWh produced per year 5,020 kwh consumed per year
Camping - Hot water consumption in camping or open air accommodations depends on the offered level of service. Main daily volume is used for showers, sinks for washing laundry and dishes. High end camping offers common laundry facilities. Standard consumption varies from 8 to 25 liters 78 camping pitches located in South (at 60 C) per day and per person for a 2 stars to of France. 4 stars open air accommodation. One camping pitch Open period from May to midusually requires from 30 to 60 liters per day. October Peaks typically occur in the morning and in the Average occupancy rate is 49 % late afternoon, from showers consumption. 65 C hot water needs for 2 sanitary - The usual opening period is from May to September. blocks for showers and sinks (laundry and dishes) Number of camping pitches (45 liters of 60 C hot water per days each) Camping pitches Yearly needs: 258 m3 of 65 C hot 40 60 80 100 120 Number of Aquaeco 2 3 4 5 6 water Required tank size 2*750 l 3*750 l 4*750 l 5*750 l 6*750 l Each bloc equipped with 2 Aquaeco2 3 3 average 60 C water to produce * 135 m 405 m heat pumps and two 750L tanks. * 50%occupencyrate / 5monthsopen period 15,902 kwh produced per year 4,824 kwh consumed per year
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