Heat pump ,Energy and air treatment – uae – viessamnn

Heat pumps in Cooling Mode

How does the heat pump work in cooling mode?

·    The heat pump pushes the liquid refrigerator with an expansion valve on the indoor coil to cool the home. The refrigerator draws heat energy from the indoor air that is blown over the coils.

·  The resulting cool air is then blown through the exhaust channels of the home. This process causes the liquid refrigerator to turn into gas as it absorbs heat.

·  The gas refrigerator then flows to the compressor, where it receives pressure. The compressed gas gets more heat and passes through the system to the coil on the external unit.

·  The fan is an external unit that blows external air into the coils, which act as a condenser. The difference in temperature and pressure between the hot refrigerator and the outside air allows the unit to release heat into the atmosphere.

·   As the refrigerator cools, it returns to a liquid state, which is then pumped into the system into an expansion valve in the indoor unit. The expansion valve reduces the pressure of the liquid refrigerator and cools continuously.

·   This refrigeration cycle repeats itself until the heat pump reaches the required temperature.

Heat pumps in Heat Mode

How does a heat pump work in heat mode?

·     To heat the home, the rectifier valve returns the flow of the refrigerator to the heat pump system. This conversion causes outside air to become a source of heat.

·     The roles of the evaporator and condenser are also reversible. The outdoor unit coil acts as an evaporator, while the indoor unit coil acts as a condenser.

·     The liquid refrigerator absorbs heat while it is inside the outdoor unit and turns into cold gas. An indoor compressor presses cold gas and heats it. The air then passes over the newly formed hot gas found inside the indoor condenser coil to heat the home.

·     As air passes over a hot, gas-cooled refrigerator, the refrigerator condenses into a warm liquid, flowing back into the outer unit.

·    As the liquid enters the external unit, the measuring device causes it to lose both pressure and temperature, cooling down. This cycle repeats as needed.

Some of the most efficient heat pumps are fitted with a desuperheater and a good cooling system, which returns the dirt to the cooling mode of the heat pump and uses it to heat water. A heat pump with a desuperheater can heat water 2 to 3 times more than a normal electric heater is a good system.

Another development is the technology of the scroll compressor heat pump, which consists of two spiral-shaped volumes. Heat pump Compared to conventional piston compressors, scroll compressors have a longer working life and are quieter. According to some reports, heat pumps with scrolling compressors provide a warm air temperature of 10 ° to 15 ° F (5.6 ° to 8.3 ° C) when the temperature is high and low, compared to existing heat pumps with piston compressors.

Although most heat pumps use heat-resistant electric heaters as a backup for cold weather, heat pumps can also be installed in conjunction with a gas furnace, sometimes called a dual or hybrid fuel system, to fill the heat pump. This helps solve the problem of slow-moving heat pumps at low temperatures and reduces their power consumption. There are very few heat pump manufacturers that combine both types of heaters in one box, so this system usually has two small systems, side to side, often sharing the same way.

Compared to a furnace heated by burning gasoline or a conventional heat pump alone, this type of system can be very economical. Real energy efficiency depends on the amount of fuel costs compared to electricity.