2results about How to "Increase unit cooling capacity" patented technology

The invention discloses a hydrogen energy and natural energy heat pump heat supply and refrigeration integrated system and method, and relates to the technical field of hydrogen energy and natural energy heat pump heat supply and refrigeration integration. The heat pump heating module comprises the following steps that S1, carbon dioxide in air is absorbed through a refrigerant or the refrigerant and released into water; the carbon dioxide heat pump is used, and carbon dioxide is a clean refrigerant, has no destructive influence on the environment, is stable in chemical property, non-combustible, not easy to decompose at high temperature, does not generate harmful gas, is non-toxic, reduces threats to people due to leakage, is good in fluidity and has a relatively high evaporation latent heat value; compared with conventional refrigerants, the compression ratio of carbon dioxide is much smaller than that of common refrigerants, high performance coefficient and mechanical efficiency can be achieved, the high condensing temperature enables the exhaust temperature of a compressor to be high, and water at the high temperature can be obtained.

The invention relates to the technical field of refrigeration, heating and heat pumps, and discloses an ejector synergistic double-evaporator heat pump drying system and method for material drying. The system comprises an air circulation loop and a refrigerant circulation loop. Wet air at an outlet of the drying chamber is sequentially cooled and dehumidified by the high-temperature evaporator and the low-temperature evaporator in a stepped manner, heated by the condenser and then returned to the drying chamber; the refrigerant circulation loop comprises a compressor, a condenser, an auxiliary condenser, an ejector, a high-temperature evaporator, a gas-liquid separator, a throttling element and a low-temperature evaporator. According to the heat pump drying system, the high-temperature evaporator and the low-temperature evaporator are arranged to cool air in a stepped mode, the average evaporation temperature is increased, meanwhile, the ejector is introduced into a loop to recycle expansion work, irreversible loss in the throttling process is reduced, and therefore the efficiency of the heat pump drying system is improved; and saturated liquid at the outlet of the gas-liquid separator enters the low-temperature evaporator after being throttled, so that the dehumidification capability of the low-temperature evaporator is effectively improved.