A multi-effect regenerative heat source tower heat pump system and method

Abstract

The invention discloses a multi-effect regenerative heat source tower heat pump system, which comprises a closed heat source tower, a heat source tower circulation pump, a bypass regulating valve, a heat pump unit, an organic solution circulation pump, an inlet regulating valve, an outlet regulating valve, and a condenser bypass Through regulating valve, return water regulating valve, water supply regulating valve, condenser, first, second, third and fourth effect heat exchange chamber, condensate heat exchanger, solution heat exchanger, degassing chamber, first, Second heat exchanger, condensing degassing chamber, condensed water pump, first and second solution booster pumps, vacuum pump, pressure switch, concentrated solution regulating valve, condenser regulating valve, condensing and degassing chamber regulating valve, condensing and degassing chamber Drain regulating valve, condenser drain regulating valve, dilute solution regulating valve, first, second, third and fourth effect solution outlet regulating valve, first, second, third and fourth effect water supply regulating valve, second , The third and fourth effect drain regulating valves, the first, second and third effect bypass drain regulating valves and the first effect hot water regulating valves.

Description

technical field [0001] The invention relates to the field of air conditioning and refrigeration, in particular to a multi-effect regenerative heat source tower heat pump system and method. Background technique [0002] The heat source tower heat pump can effectively solve the frosting problem that air source heat pumps tend to produce in winter, and can be used in both winter and summer, with good technical and economic value. In recent years, the research and application of heat source tower heat pump systems have become more and more many. [0003] Currently, a major problem in heat source tower heat pumps is the regeneration of antifreeze solutions. When the heat source tower is used in winter, the antifreeze solution will absorb water vapor in the air, and the latent heat transferred by the condensation of water vapor is usually less than 30% of the heat absorbed by the antifreeze solution in the heat source tower. After absorbing moisture in the air, the concentration...

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Problems solved by technology

However, since the antifreeze solution is in direct contact with the air in the heat source tower, the non-condensable gas contained in it will escape in a large amount in a vacuum environment and enter the condenser with water vapor, which will seriously affect the condensation heat transfer effect. The non-condensable gas is pretreated, and the patent application number 201410038285.8 proposes the use of forward osmosis membrane technology to isolate the non-condensable gas, but the forward osmosis membrane is prone to sludge and solute reverse osmosis problems

In addition, when the antifreeze solution is regenerated by boiling, the current methods are all single-effect. When the temperature of the heat source is high (such as using a heat pump unit to provide heat), a large energy waste will be generated.

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