A new type of heat station system with large temperature difference heat transfer and concentrated heat refrigeration function

Abstract

The invention discloses a novel heating station system having both large-temperature-difference heat exchange and concentrated heat refrigeration functions, and relates to the technical field of heating devices. The novel heating station system comprises an absorption heat pump, a compression heat pump, a cooling tower, a first heat exchanger and a heat exchanger; the absorption heat pump includes a generator, a first evaporator, an absorber and a first condenser; the compression heat pump includes a second evaporator and a second condenser; under the working conditions in winter, the large-temperature-difference heat exchange is realized through the absorption heat pump and the compression heat pump, the heating network water return temperature is lowered, and the heating network conveying capacity is improved; under the working conditions in summer, high-temperature heating network water supplied by a concentrated heating resource is used for driving the absorption heat pump to realize concentrated heat refrigeration; meanwhile, the compression heat pump is converted to a refrigeration working condition; the absorber and the first condenser are connected with the second condenser in series for heating; the cooling tower is matched for cooling; and the first evaporator and the second evaporator are serially connected for cooling to realize frozen water supply of a cold supply terminal, so that the utilization rate of heat pump / refrigerator equipment is increased.

Description

technical field [0001] The invention relates to the technical field of thermal devices, in particular to a novel thermal power station system with functions of large temperature difference heat exchange and centralized heat refrigeration. Background technique [0002] At present, the cogeneration system has the bottleneck problem of insufficient heating capacity and insufficient central heating network transmission capacity. In order to solve the problem of insufficient heating capacity of the power plant, an absorption heat pump is installed in the power plant to recover the waste heat of flue gas and condensed steam; in order to solve the problem of insufficient transportation capacity of the centralized heating network, an absorption heat exchange unit is installed in the substation of the heating network, which can greatly Reduce the temperature of the return water to achieve large temperature difference heat exchange. [0003] In summer, the heating unit of the power p...

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Problems solved by technology

However, the cooling load in summer changes frequently in terms of intensity and time, and the flow rate of the central heating network needs to be adjusted frequently accordingly, which leads to serious hydraulic imbalance and affects the economics of centralized heat transmission

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