Air Handling Units. Real HVACR people who understand your needs.

Air Handling Units Real HVACR people who understand your needs. Copyright HC Heat-Exchangers (PTY) Ltd. 1

About the HC AHU range HC Heat-Exchangers rich engineering heritage, coupled with our desire to remain at the forefront of design and manufacturing technology, ensures our latest Air Handling Units (AHU s) encompass the latest technology on offer. By ensuring that all of our units major components are sourced from leading local suppliers; who support research and development themselves, further guarantees our clients of a world class product, designed and engineered to perform. As a specialist engineering firm we have the experience and capacity to manufacture and design innovative products, ensuring units that value energy efficiency whilst reducing our carbon footprint and protecting our environment for future generations. We understand the ever more critical need to reduce costs without compromising on quality and energy efficiency, at all levels throughout the value chain. In response to this we offer both a standard range of units, along with custom engineered units to suit site specific requirements. Our bespoke solutions allow Air Handling Units to be designed and manufactured in different aspect ratios, as well as in modular form for on site assembly where required. This modular construction method reduces client side rigging costs, whilst offering a practical solution for sites with limited/restricted access. Drawing strength and motivation from our strong and dedicated staff compliment of over 300, in combination with our extensive research and development expertise, has allowed HC Heat-Exchangers to become the largest manufacturer of finned tube heat-exchangers in Southern Africa, successfully serving both the Commercial and Industrial market segments. With HC Heat-Exchangers you can be assured of professional and knowledgeable assistance during the design, installation and commissioning of any project. Copyright HC Heat-Exchangers (PTY) Ltd. 3

By embracing the latest technologies and promoting a culture of research and development, our Air Handling Units construction materials and fastening methods have been optimised to ensure reliable operation and trouble free maintenance. We are able to design and manufacture units of all sizes and capacities in various construction materials, to suit the market s requirements. Our standard models range from 1m 3 /s to 40m 3 /s. Our Air Handling Units, which form an integral part of a Central Air Conditioning plant, comprise of various components and solutions to assist the designer in achieving the desired conditioned environment. These components are selected based on their ability to contribute to sustainability, energy efficiency and improved indoor air quality (IAQ). The conditioned air would generally be supplied to the conditioned area via a network of ducting. The type of ducting selected is typically based on the environmental, insulation and cost requirements. Copyright HC Heat-Exchangers (PTY) Ltd. 4

AHU Range APPLICATIONS CLIMATES Airports Cinemas Computer Rooms Factories Hospitals Industrial Processes Laboratories Offices Restaurants Schools Shopping Centres Swimming Pools Arid Highland Humid Continental Humid Sub Tropical Ice Cap Marine West Coast Mediterranean Tropical Wet Tropical Wet and Dry Tundra Semi-Arid Sub Arctic Depending on the specific requirements, application and climate, the designer would select the appropriate type of components for the Air Handling Units. The air would be filtered, cooled and/or heated, humidified and/or dehumidified. Copyright HC Heat-Exchangers (PTY) Ltd. 5

Casing: The panel finish is determined by the client with various options such as: Powder coated steel, AluZinc, Chromadek or Stainless Steel, while the insulation is based on acoustic attenuation, thermal characteristics, and production costs. Options include flexible, elastomeric thermal insulation, polyurethane, fire retardant polystyrene, mineral wool or calcium silicate. Our smaller units are constructed with either insulated sandwich type panels using an aluminium profile frame system, or with powder coated panels. Our larger units are constructed with tongue and groove type sandwich panels and are trimmed with aluminium angles. Unit base: The stability and strength of the unit is predominantly determined by the base frame. The type of base used is determined based on the size of the unit and the installation environment. Employing the latest FEA (Finite Element Analysis) simulation software, we are able to design and engineer the correct base type, which allows the unit to be rigged into position safely. Smaller unit bases are constructed using galvanised or stainless steel sheet metal profiles, whilst the larger units are welded, heavy duty structural steel sections (painted or hot dip galvanised). Copyright HC Heat-Exchangers (PTY) Ltd. 6

Major Components Fans and motors: The fans are static and dynamically balanced, and are single or double inlet, forward or backward curved centrifugal plug or axial type units. These fans can either be belt driven or direct driven, with belt guards fitted in order to provide safety from all moving parts. The motors on the belt driven fans are of a squirrel cage TEFC type and can be speed controlled using either an external variable speed drive, or by varying the belts and/or pulleys. The latest innovative EC Plug Fans have an electrically commutated control facility that allows for a varied fan speed. Filters: The type of filter used is determined by the environment, climate and required application. Generally, the filters used within our Air Handling Units are: Panel Washable Filters, Bag Filters, Compact Cassette Filters, Carbon Filters, Electrostatic Filters and HEPA Filters. Copyright HC Heat-Exchangers (PTY) Ltd. 7

Dampers: Dampers are used to control the amount of air passing in and out through an opening and are generally located within the mixing plenum of the Air Handling Unit. The dampers can either be motor-driven or of manual actuation, and can control Outside Air, Return Air, Exhaust Air, etc. The outside air dampers can be controlled automatically via a CO 2 sensor and are supplied in extruded aluminium, galvanised or stainless steel sections with or without seals. Sound Attenuators: Noise pollution is a major concern facing society and the need for Sound Attenuation is becoming increasingly high. Major factors that must be considered are: sound insulation, sound absorption, vibration damping, and vibration isolation. In light of this, maintaining acceptable acoustics in a space is an important component of Indoor Environmental Quality (IEC). The application and environment in which the AHU is installed will determine the acceptable noise levels. Sound levels can be reduced by selecting the appropriate fans and minimising vibration and drive noises. Noise levels can be further reduced by applying a sound absorbing material inside the walls of the discharge plenum section. Copyright HC Heat-Exchangers (PTY) Ltd. 8

Major Components Cooling, Heating and Steam Coils: Coils are manufactured based on the application and climate, and therefore a choice of copper fins, coated fins, stainless steel fins, aluminium fins and aluminium magnesium (AlMg) is available. The tubing and frame material can also vary. The coils are generally copper tubes mechanically bonded to aluminium fins, with copper headers, all contained within a galvanised, Aluminium or stainless steel frame. These coils are selected using the latest HC Heat-Exchangers computer selection software to achieve the desired thermal efficiency with minimum air and fluid pressure drops. The software caters for various fluid types, and bypass factors are also taken into account in order to ensure optimal efficiency. All coils are provided with drain connections and air vents. The tube wall thickness and the test pressure are based on the fluid passed through the coil. The cooling coil assembly is fitted on a stainless steel drain pan, for condensate removal. Copyright HC Heat-Exchangers (PTY) Ltd. 9

Image courtesy of Condair plc. De-Humidifiers: There are various types of De-Humidifiers used within the Air Handling Units. The most popular use the refrigeration cycle in a cooling or heatpump desiccant type, where air passes through a rotor containing a water absorbent desiccant material. Humidifiers: Humidifiers are used to condition the space by adding moisture to maintain comfort and protect the contents of the space. The type of humidifier used depends on the psychrometric process and economic factors. Steam humidification is an isothermal process, therefore, it does not change the air temperature. The preferred steam humidifier is either steam generated in a large central boiler and distributed into the Air Handling Units via a network of steam piping with its associated pressure reducing stations, or a portable boiler for each Air Handling Unit with dispersion tubes and nozzles. The alternative is the adiabatic process, where the air is cooled whilst moisture is added into the airstream; this is achieved by either High Pressure Atomizing, Air/Water Atomising or Wetted Cellulose Fibre. Copyright HC Heat-Exchangers (PTY) Ltd. 10

Major Components Heat Recovery Wheels / Air to Air Heat Exchangers: These recovery methods utilise a transfer of energy and are used extensively within the industry to achieve energy savings, by removing both sensible and/or latent heat. The wheel or Plate heat-exchanger is positioned within an Air Handling Unit and is divided into two sections, where the stale exhaust air is drawn through one half and the outside air through the other in a counter flow arrangement. The benefit of this system is that the energy is conserved from the stale exhaust air and fresh incoming air is added into the outside air. Extras: Components that can be included within the Air Handling Units, are : Heat-pipes Gas Burners Droplet Eliminators Ultraviolet UV disinfection lamps Photocatalytic Oxidation Air Cleaners Electric Heater Banks Run around Coils Cooling /Heating Valves Switchboard and Controls Electronic or Thermostatic expansion valves Rounded internal unit profiles for hygiene type units Moisture Eliminators Copyright HC Heat-Exchangers (PTY) Ltd. 11

Horizontal Units With EC Plug Fans Model No. Supply Air Unit Unit Unit Approximate EC Plug Supply Spigot Return Air Drain Reference Quantity (m 3 /s) Length Width Height Rigging Weight (kg) Fan Size Ø Size (2 off) HC-AHU-H-1 vv 1.00 4060 1400 950 1000 1x400 800x300 400x500 32 HC-AHU-H-2...vv 2.00 4060 1400 1450 1050 1x450 800x550 400x1000 32 HC-AHU-H-3...vv 3.00 4060 1600 1450 1200 2x450 900x750 450x1000 32 HC-AHU-H-4...vv 4.00 4060 2200 1450 1400 2x450 1600x600 600x1000 32 HC-AHU-H-5 vv 5.00 4060 2200 1650 1550 3x450 1600x700 650x1200 32 HC-AHU-H-6 vv 6.00 4060 2800 1650 1700 3x450 1650x800 800x1150 32 HC-AHU-H-7 vv 7.00 4060 2800 1650 1800 4x450 1650x950 900x1150 32 HC-AHU-H-8 vv 8.00 4060 2800 2000 1950 4x450 1650x1100 850x1450 32 HC-AHU-H-9 vv 9.00 4060 2800 2000 2100 5x450 1650x1200 950x1450 32 HC-AHU-H-10 vv 10.00 4060 2800 2350 2200 5x450 1650x1400 850x1800 40 HC-AHU-H-11 vv 11.00 4060 2800 2550 2400 5x450 1650x1500 850x2000 40 HC-AHU-H-12 vv 12.00 4060 2800 2550 2500 6x450 1650x1600 900x2000 40 HC-AHU-H-13 vv 13.00 4660 2800 2950 2750 6x450 1650x1800 800x2400 40 HC-AHU-H-14 vv 14.00 4660 2800 2950 2900 7x450 1650x1900 900x2400 40 HC-AHU-H-15 vv 15.00 4660 3400 2950 2900 7x450 2150x1600 1000x2400 40 HC-AHU-H-16 vv 16.00 4660 3400 2950 3000 8x450 2150x1700 1000x2400 40 HC-AHU-H-17 vv 17.00 4660 3400 2950 3100 8x450 2150x1800 1050x2400 40 HC-AHU-H-18 vv 18.00 4660 3400 2950 3350 9x450 2150x1900 1150x2400 40 HC-AHU-H-19 vv 19.00 4660 3400 3550 3600 9x450 2150x2000 1000x3000 40 HC-AHU-H-20 vv 20.00 4660 3400 3550 3700 10x450 2150x2100 1000x3000 40 (Range 1m 3 /s - 20m 3 /s) Copyright HC Heat-Exchangers (PTY) Ltd. 13

Horizontal Units With Centrifugal Fans Model No. Supply Air Unit Unit Unit Approximate EC Plug Supply Spigot Return Air Drain Reference Quantity (m 3 /s) Length Width Height Rigging Weight (kg) Fan Size Ø Size (2 off) HC-AHU-H-1 cv 1.00 2330 1450 950 1150 315 404x404 300x550 32 HC-AHU-H-2...cv 2.00 2895 1450 1450 1250 315 404x404 300x1050 32 HC-AHU-H-3...cv 3.00 2895 1650 1450 1350 400 506x506 450x1050 32 HC-AHU-H-4...cv 4.00 2895 2250 1450 1450 450 568x568 600x1050 32 HC-AHU-H-5 cv 5.00 3495 2250 1650 1500 500 638x638 600x1250 32 HC-AHU-H-6 cv 6.00 3495 2850 1650 1750 560 714x714 750x1250 32 HC-AHU-H-7 cv 7.00 3495 2850 1650 1950 630 800x800 850x1250 32 HC-AHU-H-8 cv 8.00 3495 2850 2000 2100 630 800x800 800x1550 32 HC-AHU-H-9 cv 9.00 4060 2850 2000 2250 710 898x898 900x1550 32 HC-AHU-H-10 cv 10.00 4060 2850 2350 2350 710 898x898 800x1900 40 HC-AHU-H-11 cv 11.00 4060 2850 2550 2400 800 1006x1006 800x2100 40 HC-AHU-H-12 cv 12.00 4060 2850 2550 2550 800 1006x1006 850x2100 40 HC-AHU-H-13 cv 13.00 4660 2850 2950 2900 800 1006x1006 800x2500 40 HC-AHU-H-14 cv 14.00 4660 2850 2950 3150 900 1130x1130 850x2500 40 HC-AHU-H-15 cv 15.00 4660 3450 2950 3250 900 1130x1130 900x2500 40 HC-AHU-H-16 cv 16.00 4660 3450 2950 3400 900 1130x1130 950x2500 40 HC-AHU-H-17 cv 17.00 4660 3450 2950 3550 900 1130x1130 1000x2500 40 HC-AHU-H-18 cv 18.00 4660 3450 2950 3600 1000 1266x1266 1000x2500 40 HC-AHU-H-19 cv 19.00 5225 3450 3550 3700 1000 1266x1266 1000x2950 40 HC-AHU-H-20 cv 20.00 5225 3450 3550 3800 1000 1266x1266 1000x3100 40 (Range 1m 3 /s - 20m 3 /s) Copyright HC Heat-Exchangers (PTY) Ltd. 15

Horizontal Units With V Shape Coils & EC Plug Fans Model No. Supply Air Unit Unit Unit Approximate EC Plug Supply Spigot Return Air Drain Reference Quantity (m 3 /s) Length Width Height Rigging Weight (kg) Fan Size Ø Size (2 off) HC-AHU-H-21 vv 21.00 5225 3300 3900 4100 10 x 450 950x3350 950x3300 40 HC-AHU-H-22 vv 22.00 5225 3300 3900 4100 10 x 450 1000x3350 1000x3300 40 HC-AHU-H-23 vv 23.00 5825 3500 3900 4300 11 x 450 1000x3350 1000x3300 40 HC-AHU-H-24 vv 24.00 5825 3500 3900 4400 11 x 450 1000x3350 1000x3300 40 HC-AHU-H-25 vv 25.00 5825 3700 3900 4500 12 x 450 1150x3350 1150x3300 40 HC-AHU-H-26 vv 26.00 5825 3700 3900 4500 12 x 450 1200x3350 1200x3300 40 HC-AHU-H-27 vv 27.00 5825 3900 3900 4600 13 x 450 1200x3350 1200x3300 40 HC-AHU-H-28 vv 28.00 5825 3900 3900 4900 13 x 450 1250x3350 1300x3300 40 HC-AHU-H-29 vv 29.00 6390 4200 4000 5100 14 x 450 1250x3450 1300x3400 40 HC-AHU-H-30 vv 30.00 6390 4200 4100 5100 14 x 450 1270x3450 1300x3400 40 (Range 21m 3 /s - 30m 3 /s) Copyright HC Heat-Exchangers (PTY) Ltd. 17

Horizontal Units With V Shape Coils & Centrifugal Fans Model No. Supply Air Unit Unit Unit Approximate EC Plug Supply Spigot Return Air Drain Reference Quantity (m 3 /s) Length Width Height Rigging Weight (kg) Fan Size Ø Size (2 off) HC-AHU-H-21...cv 21.00 6390 3300 3900 4100 1000 1266x1266 950x3300 40 HC-AHU-H-22...cv 22.00 6390 3300 3900 4100 1000 1266x1266 1000x3300 40 HC-AHU-H-23...cv 23.00 6390 3500 3900 4300 1000 1266x1266 1000x3300 40 HC-AHU-H-24...cv 24.00 6390 3500 3900 4400 2x800 1006x2015 1000x3300 40 HC-AHU-H-25...cv 25.00 6390 3700 3900 4500 2x800 1006x2015 1150x3300 40 HC-AHU-H-26...cv 26.00 6390 3700 3900 4500 2x800 1006x2015 1200x3300 40 HC-AHU-H-27...cv 27.00 6390 3900 3900 4600 2x800 1006x2015 1200x3300 40 HC-AHU-H-28...cv 28.00 6990 3900 3900 4900 2x900 1130x2265 1300x3300 40 HC-AHU-H-29...cv 29.00 6990 4200 4000 5100 2x900 1130x2265 1300x3400 40 HC-AHU-H-30...cv 30.00 6990 4200 4100 5100 2x900 1130x2265 1300x3400 40 (Range 21m 3 /s - 30m 3 /s) Copyright HC Heat-Exchangers (PTY) Ltd. 19

Heat-Recovery Wheel With EC Plug Fans Model No. Supply Air Unit Unit Unit Approximate EC Plug Supply Spigot Return Air Drain Reference Quantity (m 3 /s) Length Width Height Rigging Weight (kg) Fan Size Ø Size (2 off) HC-AHU-HRW-1 vv 1.00 3495 1800 2000 1200 2x400 800x300 400x400 25 HC-AHU-HRW-2 vv 2.00 3495 2000 2700 1600 2x450 800x550 600x550 25 HC-AHU-HRW-3 vv 3.00 3495 2400 2700 2000 4x450 900x750 900x550 32 HC-AHU-HRW-4 vv 4.00 4060 2500 2700 2200 4x450 1600x600 1300x500 32 HC-AHU-HRW-5 vv 5.00 4060 2900 3100 2650 6x450 1600x700 1500x550 32 HC-AHU-HRW-6 vv 6.00 4660 3100 3700 3200 6x450 1650x800 2000x500 32 HC-AHU-HRW-7 vv 7.00 4660 3200 3700 3750 8x450 1650x950 2100x550 32 (Range 1m 3 /s - 7m 3 /s) Copyright HC Heat-Exchangers (PTY) Ltd. 21

Vertical Unit Range With EC Plug Fans Model No. Supply Air Unit Unit Unit Approximate EC Plug Supply Spigot Return Air Drain Reference Quantity (m 3 /s) Length Width Height Rigging Weight (kg) Fan Size Ø Size (2 off) HC-AHU-V-1 vv 1.00 1000 750 1900 200 1x400 450x1100 500x1000 25 HC-AHU-V-2...vv 2.00 1350 750 1900 300 1x450 550x1200 1000x1000 25 HC-AHU-V-3...vv 3.00 1850 750 1950 450 2x450 550x1400 1200x1000 25 HC-AHU-V-4...vv 4.00 2350 800 2000 700 2x450 550x1800 1800x1000 25 HC-AHU-V-5 vv 5.00 2350 800 2000 800 3x450 550x2400 2000x1000 25 HC-AHU-V-6 vv 6.00 2750 900 2150 1000 3x450 550x2500 2400x1000 32 HC-AHU-V-7 vv 7.00 3350 900 2150 1100 4x450 650x3100 3000x1000 32 HC-AHU-V-8 vv 8.00 3950 900 2200 1300 4x450 650x3101 3600x1000 32 HC-AHU-V-9 vv 9.00 3950 900 2200 1300 4x450 650x3102 3600x1000 32 (Range 1m 3 /s - 9m 3 /s) Copyright HC Heat-Exchangers (PTY) Ltd. 23

Vertical Units With A Centrifugal Fan Model No. Supply Air Unit Unit Unit Approximate EC Plug Supply Spigot Return Air Drain Reference Quantity (m 3 /s) Length Width Height Rigging Weight (kg) Fan Size Ø Size (2 off) HC-AHU-V-1 cv 1.00 1000 750 1900 250 10-10 331x289 500x1000 25 HC-AHU-V-2...cv 2.00 1350 750 1900 350 9-9 Twin 840x262 1000x1000 25 HC-AHU-V-3...cv 3.00 1850 750 1950 500 12-12 Twin 1114x341 1200x1000 25 HC-AHU-V-4...cv 4.00 2350 800 2000 750 15-15 Twin 1326x404 1800x1000 25 HC-AHU-V-5 cv 5.00 2350 800 2000 850 15-15 Twin 1326x404 2000x1000 25 HC-AHU-V-6 cv 6.00 2750 900 2150 1050 18-18 Twin 1572x478 2400x1000 32 HC-AHU-V-7 cv 7.00 3350 900 2150 1150 18-18 Twin 1572x478 3000x1000 32 HC-AHU-V-8 cv 8.00 3950 1000 2200 1350 450 Twin 1586x568 3600x1000 32 HC-AHU-V-9 cv 9.00 3950 1000 2200 1350 450 Twin 1586x568 3600x1000 32 (Range 1m 3 /s - 9m 3 /s) Copyright HC Heat-Exchangers (PTY) Ltd. 25

SERVING ALL YOUR HEAT EXCHANGE NEEDS Chilled & Hot Water Coils Condensers & Evaporators Electrical Distribution Boards Packaged AHU s & Refrigeration Units Compressorised Simplex & Multiplex Systems Bespoke Products Manufactured to Specification AquaPlus Hybrid Evaporative Condensers Heat Pumps & Water Chillers Steam Coils & Dry Coolers Tel: +27 11 674 1237 Email: sales@hcaircon.com www.hcaircon.com Address: Corner Amber & Serenade Roads, Elandsfontein, Johannesburg, South Africa Copyright HC Heat-Exchangers (PTY) Ltd. 26