An air source heat pump (ASHP) is a system which transfers heat from outside to inside a building, or vice versa. Under the principles of vapour compression refrigeration, an ASHP uses a refrigerant system involving a compressor and a condenser to absorb heat at one place and release it at another. They can be used as a space heater or cooler, and are sometimes called "reverse-cycle air conditioners"
Air source heat pumps can provide fairly low cost space heating. A high efficiency heat pump can provide up to four times as much heat as an electric resistance heater using the same amount of electricity.Function:
Fan draws out side ambient air in to the heat pump and pass through the evaporator coil. In the evaporator coil, the refrigerant can turn liquid to gas at very low temperature. This gas compressed by compressor to elevate the temperature and pressure. Condenser is nothing but tube in tube or tube in shell heat exchanger is made of copper pipe with no welding inside. The internal spiral surface of copper tube ensure effectiveness of heat exchanger. Provision is made for gas as well as water connection.
Heated gas pass through one tube while water passes through the shell. Water gets instantly heated from 15 deg.c to 55 deg.c. Refrigerant gas is condensed and goes to liquid from the same pressure as discharged by compressor. In expansion valve, causes sudden pressure drop in refrigerant, in turn refrigerant temperature drop to temperature below the ambient air. It is ready to receive heat from air. Thus gas cycle complete.
Evaporator coil used is of fin and tube type. This fins are hydrophilic treated aluminium fins to resists corrosion and copper tubes are inner grooved type, which increases the heat transfer in the refrigerant side.
1. High efficiency tube-in-tube heat exchanger for circulating type.
High working pressure :
The copper pipe is of 0.8- 1.2 mm thickness, no welding inside with its extra ordinary pressure resistance property. The copper pipe is without any leakage under 5kg/sq.cm pressure test.
Description | Refrigerant Side | Water Side |
---|---|---|
Max. Working Pressure | 5.2kg/sq.cm | 3.2kg/sq.cm |
Working Temp range | -50 to 150deg.C | -50 to 150deg.C |
The units are supplied with microprocessor based digital controller with LCD display. The control is programmed to provide maximum protection to the heat pump system and accurate temperature control. The control panel is completely fixed and cabled at manufacturing unit and supplied along with all accessories.
Domestic Heat pump circulating model adopts high efficiency tube – in – tube water heat exchanger and incorporate a built in German Willo pump and for every installation. The unit is capable of producing hot water with a maximum temperature up to 55 deg.c It can retrofit to existing solar water heater tank or electrical geyser to replace electric water heater. save more than 2/3 energy.
Technical specification
MODELS | ASHP- 3.5 C | ASHP- 5 C | ASHP- 10 C |
---|---|---|---|
Power supply-v/Hz/ph | 220/50/1 | 220/50/1 | 220/50/1 |
Heating capacity-kw/hr | 3.5 | 5 | 10 |
Power input -kw/hr | 1 | 1.5 | 2.75 |
Current- Amps | 6 | 8 | 14 |
Hot water production – ltr/hr | 80 | 140 | 250 |
Inlet temp. – Deg.c | 25 | 25 | 25 |
Outlet temp.- Deg.c | 55 | 55 | 55 |
Rated water flow rate-l/hr | 750 | 850 | 1700 |
Water connection- in/out | 3/4" | 3/4" | 1" |
Dimensions (Outer)-LxBxH | 450 x 750 x 500 | 450 x 1000 x 500 | 620 x 990 x 700 |
Weight | 40 Kgs | 50 Kgs | 75 Kgs |
Circulation Pump | Wilo make | Wilo make | Pedrollo make |
Compressor | Hermatic Type, Copeland make | ||
Condenser | Donfoss / equivalent | ||
HP/LP Switch | Donfoss | ||
Evaporator | Cu tube with al. fin | ||
Electrical | L & T & Schneider make | ||
Outer Body | GI - Powder coated off-white |
Commercial and industrial Hot Water Heat Pumps are designed to offer hot water for commercial and (or) industrial application. In order to achieve the required water temperature, large heat pump units apply unique “V” style evaporator design, which enlarges the heat exchange surface and increases efficiency
Technical specification
MODELS | ASHP- 19 C | ASHP- 38 C |
---|---|---|
Power supply-v/Hz/ph | 415/50/3 | 415/50/3 |
Heating capacity-kw/hr | 19 | 38 |
Power input -kw/hr | 5.5 | 11 |
Current- Amps | 10 | 25 |
Hot water production – ltr/hr | 500 | 1000 |
Inlet temp. – Deg.c | 25 | 25 |
Outlet temp.- Deg.c | 55 | 55 |
Rated water flow rate-l/hr | 3500 | 3500 |
Water connection- in/out | 1" | 1 1/4" |
Dimensions (Outer)-LxBxH | 800 x 750 x 1050 | 1000 x 1500 x 1050 |
Weight | 120 Kgs | 200 Kgs |
Circulation Pump | Pedrollo make | Pedrollo make |
Compressor | Scroll Type, Copeland make | |
Condenser | Donfoss / equivalent | |
HP/LP Switch | Donfoss | |
Evaporator | Cu tube with al. fin | |
Electrical | L & T & Schneider make | |
Outer Body | GI- Powder coated off-white |