Total heat recovery combustion gas-air energy composite heat pump hot-cold combined supply unit

Abstract

The invention relates to a total heat recovery combustion gas-air energy composite heat pump hot-cold combined supply unit, and belongs to the heating ventilation heat supply technical field; the total heat recovery combustion gas-air energy composite heat pump hot-cold combined supply unit comprises a total premix condensing heat supply machine, an air energy heat pump hot-cold combined supply triple-purpose machine, a hot-cold combined supply pipeline module, and corresponding connecting pipes; a condenser can recover and utilize flue gas waste heat of the combustion gas heat supply equipment, and an evaporator of the air energy heat pump can absorb residual low grade (temperature lower than 70 DEG C) flue gas waste heat, so the smoke evacuation temperature of the combustion gas heat supply equipment can be reduced to room temperature, thus realizing flue gas full recovery utilization of the combustion gas heat supply equipment; the total heat recovery combustion gas-air energy composite heat pump hot-cold combined supply unit can solve the winter air energy heat pump high efficiency operation problems, can simultaneously reduce nitrogen oxide discharged into the atmosphere, thus protecting environment, and realizing energy saving and emission reduction.

Description

Technical field: [0001] The invention relates to a full heat recovery type gas-air energy composite heat pump combined cooling and heating unit, which belongs to the technical field of heating, ventilation and heating. Background technique [0002] In recent years, in order to improve the atmospheric environment and reduce the pollution of coal-fired flue gas to the urban atmosphere, coal-fired heating equipment in my country has basically been replaced by gas-fired heating units that use natural gas as fuel. Ordinary gas heating equipment is limited by the technology of the heat exchanger, and the exhaust gas temperature is relatively high (110 ° C ~ 260 ° C), which is much higher than the dew point of water vapor in the flue gas. The latent heat of gasification cannot be used, especially for heating in the north. Season, a large amount of waste heat is discharged into the air environment with the flue gas, which wastes energy and pollutes the environment. [0003] Fully p...

AI Technical Summary

Problems solved by technology

However, the use of air-energy heat pumps is limited by the ambient temperature, and its heating capacity and coefficient of performance will decrease as the outdoor temperature decreases. It is difficult to adapt the cooling and heating capacity to the building's cooling and heating load.

There is also the problem of outdoor frosting in winter. Conventional air source heat pumps are not suitable for cold regions such as northeast, northwest, and north China.

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