Antifreezing-agent multi-path large-temperature-rise heat-extracting air-exhausting vapor-source cascading heat pump

Abstract

The invention relates to an antifreezing-agent multi-path large-temperature-rise heat-extracting air-exhausting vapor-source cascading heat pump. Cascading heat pump condensers are connected seriallyso as to run, large-temperature-rise circulating water is heated in a cascading way, and large-temperature-rise fresh air is heated in a multi-path fresh air coil pipe, so that the relative humidity is reduced, indoor moisture is absorbed, and an air-exhausting vapor heat source is formed; and evaporators are connected serially so as to run, a large-temperature-drop antifreezing agent is cooled ina cascading way, and air-exhausting and temperature-dropping sensible heat, condensation latent heat and frosting latent heat are recovered tertiarily in a multi-path heat returning coil pipe. Small-flow circulation and large-temperature-rise heat exchange are carried out on two sides of the heat pump, so that the investment and the electricity consumption of a heat pump unit, various functionalterminals, a circulating pump, a pipeline and a valve are reduced. Rolling defrosting is realized through the minimum heating capacity.

Description

(1) Technical field [0001] The invention relates to three-stage recycling of the cooling capacity of the cascade heat pump cycle to recover the cooling sensible heat, latent heat of condensation and latent heat of frosting in public buildings, bathing centers, drying workshops, and various mines. Switching, cascade heating, fresh air, return air, hot water and other multi-purpose antifreeze multi-process, large temperature rise, heat extraction, exhaust air, water vapor source cascade heat pump. (2) Background technology [0002] (1) Buildings consume half of the world's electricity, air conditioning and heating consume half of the building's electricity, air conditioning and heating in the United States and Japan consume 1 / 3 of their total electricity, and Sweden even consumes 45% of their total electricity; [0003] (2) Buildings that produce highly toxic substances and germs and emit radioactivity cannot use the return air due to serious pollution, so they have to use DC ...

AI Technical Summary

Problems solved by technology

[0003] (2) Buildings that produce highly toxic substances and germs and emit radioactivity cannot use the return air due to serious pollution, so they have to use DC air conditioners, so they lose huge amounts of heat with the huge exhaust air volume;

[0008] (1) The evaporator of the ordinary single-stage heat pump cycle can only provide a large flow rate and small temperature difference antifreeze cycle, so it is difficult to realize the efficient and low-cost optimized design of the heat recovery coil in the exhaust air heat recovery box, and it is difficult to realize its three-stage winter Cooling sensible heat, latent heat of condensation and latent heat of frosting of recycled exhaust air

[0009] (2) The condenser of the ordinary single-stage heat pump cycle can only provide water circulation with large flow rate and small temperature difference, so it is difficult to realize the high-efficiency and low-cost optimization design of the fresh air coil in the fresh air unit, and it is difficult to realize its large temperature rise in winter and equal humidity content heating fresh air

[0010] (3) The heat recovery coil and fresh air coil design of the ordinary single-stage heat pump cycle form a large flow rate and small temperature rise / fall heat exchange, which not only increases the exhaust air heat recovery box, fresh air unit, circulating water pump, antifreeze pump, and circulation Investment in pipelines and their various control valves, and increased operating power consumption of circulating water pumps and antifreeze pumps

[0011] (4) Ordinary single-stage heat pump cycle is difficult to defrost the regenerative coil in winter

[0012] (5) Ordinary single-stage heat pump cycle is difficult to greatly reduce the relative humidity of fresh air, so it is difficult to fully absorb water vapor indoors, so as to provide free water vapor latent heat energy for exhaust air recovery

[0013] (6) Ordinary single-stage heat pump cycle does not consider how to effectively use solar energy

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