Brief introduction of compressed gas air source heat pump

Gas air source heat pump heating is an emerging energy saving technology in the last two years, now mainly led and promoted by Blue Flame Hi-Tech Gas Technology Co. The gas air source heat pump heating technology combines gas heating with air source heat pump to extract heat from the air with a COP of 1.8, achieving the goal of reducing gas consumption and lowering heating costs.

1、Air source heat pump technology

Heat pump (Heat Pump) is a device that transfers heat energy from a low level heat source to a high level heat source, and is a new energy technology that has attracted much attention worldwide. It is different from the familiar mechanical equipment that can raise the level of energy - "pump"; heat pump is usually first from the natural air, water or soil to obtain low-grade heat energy, after doing work, and then provide people with high-grade heat energy can be used. According to the different sources of energy can be divided into air source heat pump, water source heat pump, soil source heat pump, etc.

Air (source) heat pump, as a kind of heat pump technology, takes the energy in the ubiquitous air as the main motive force, through a small amount of work (compression type, absorption type), to achieve the transfer of energy, without complex configuration, expensive water extraction, recharge or soil heat exchange system and special machine room, can gradually reduce the large amount of pollutant emissions brought by traditional heating to the atmosphere, to ensure the heating efficacy while taking into account The purpose of energy saving and environmental protection.

2、Gas-fired compressed air source heat pump technology

Heat pump technology can be divided into two categories: "compression heat pump" and "absorption heat pump" according to the different working principles. Blue Flame Hi-Tech gas-fired air source heat pump belongs to compression heat pump, which generally includes: gas engine, compressor, finned heat exchanger, plate heat exchanger, gas-liquid separator, waste heat recovery heat exchanger, fan and other parts. The refrigerant used in absorption heat pump is R134A, R134A Freon 134A is a new type of refrigerant, which belongs to hydrofluorocarbon class.

The difference between compressed heat pump and absorption heat pump: Blue Flame Hi-Tech gas air source compressed heat pump absorbs the low temperature heat from the air and converts it into high temperature heat energy after compressed by the compressor to heat the water temperature. Absorption heat pumps use heat energy to drive the cycle of the working mass to realize the function of "pumping" heat energy, and the commonly used working mass pairs are "water-lithium bromide (of which, dilute solution of lithium bromide is the working mass, and concentrated solution of lithium bromide is the absorbent) ", "ammonia - water (which, with ammonia as the work substance, with water absorbent)", "water - calcium chloride (which, with dilute solution of calcium chloride as the work substance, with concentrated solution of calcium chloride as the absorbent) ".

Gas heat pump technology is a kind of compression heat pump technology. Gas heat pump technology is a new air source compressed heat pump technology, using gas as the driving energy to draw heat in the air, energy saving and environmental protection, no pollution. Gas heat pump heating has the characteristics of low investment and low operation cost. The gas consumption of gas heat pump is only 40% of that of boiler, which can effectively solve the problem of building heat, especially in the areas not covered by urban heat network such as urban-rural combination and new rural construction.

The gas heat pump has been tested by the National Center for Quality Supervision and Inspection of Air Conditioning Equipment, and the COP has reached 1.8. The unit operates stably in the environment from -25℃ to 43℃, and has good adaptability to the external environment. The unit system itself is Freon system, without the anti-freezing problem similar to lithium bromide unit. The unit adopts PLC intelligent control, the gas consumption is steplessly adjusted according to the indoor load by PID, and the water temperature is automatically controlled to achieve the perfect combination of comfort and energy saving. New fan blade structure is selected to optimize the wind field design, which greatly reduces the operation noise. The unit adopts low-noise and vibration-damping design, and can be installed on the ground and roof.

3、Gas heat pump technology has good environmental characteristics:

(1) Save natural gas. The compressed heat pump unit draws part of the heat from the air to realize efficient heating. The gas consumption is only half of that of gas boiler.

(2) Gas heat pump units use primary clean energy natural gas, no PM2.5 emissions, effective prevention of haze weather.

(3) Blue Flame Hi-Tech air source gas engine heat pump uses engine waste heat system to defrost directly, so it can realize frost-free operation in winter.

(4) Using thin combustion technology to increase the air-fuel ratio and feedback control, and using digital ignition control to achieve the best ignition time to significantly reduce NOX emissions.

(5) The heat pump unit adopts Freon R134A, which does not destroy the ozone layer and protects the human living environment.

(6) The air passes through the heat exchanger, using the temperature difference to exchange heat with the work material, there is no air pollution problem.