Dissolving heat absorption type chemical heat pump and heating or refrigerating method thereof

Abstract

The invention relates to a dissolving heat absorption type chemical heat pump which comprises an evaporator, a condenser, a reactor, an air compressor, a solid-liquid separator, a circulating heat exchanger and a hot-end heat exchanger, wherein a cold-end heat exchange pipe of the evaporator is communicated with cold-end user media; a conveying pipe connected with the evaporator is communicated with more than two liquid distribution pipes arranged on the upper part of the reactor by virtue of a circulating pump respectively through the condenser, the circulating heat exchanger and a conveyingcoupling pipe, and a plurality of liquid outlets are arranged on each liquid distribution pipe; a vapor pipe arranged on the top of the reactor is connected with the evaporator respectively through the hot-end heat exchanger, the air compressor, the reactor, a backflow coupling pipe, the circulating heat exchanger and a backflow pipe;; the hot-end heat exchanger and hot-end user medium are communicated; the bottom of the reactor is communicated with the condenser; the solid-liquid separator is arranged between the bottom of the condenser and the top of the evaporator; and a return liquid portof the solid-liquid separator is communicated with the reactor by virtue of a return liquid pipe. The chemical heat pump provided by the invention has the advantages of simple structure, stable heat exchange efficiency, and low use-cost.

Description

technical field [0001] The invention relates to a dissolving heat-absorbing chemical heat pump and a heating or cooling method thereof, and belongs to the technical field of heat pumps using dissolved substances for heat exchange. Background technique [0002] The chemical heat pump system utilizes the conversion of thermal energy and chemical energy in the reversible reaction in chemical reactions to realize cooling, heating and other functions. Usually, during the desorption process, the solid reactor absorbs heat, and the adsorbent desorbs the refrigerant gas under high pressure. The refrigerant gas enters the condenser to condense and release heat, and then enters the evaporator through the throttle valve, and the refrigerant gas evaporates in the evaporator. , to produce a cooling effect on the outside world. On the other hand, the refrigerant gas evaporated at a lower pressure is adsorbed by the adsorbent to release heat, so that through such a cycle, the effect of co...

AI Technical Summary

Problems solved by technology

However, since the high-temperature and high-concentration ammonium nitrate solution is located at the bottom of the tower, while the low-temperature and low-concentration solution is located at the top of the tower, on the one hand, the low-temperature and low-concentration ammonium nitrate solution at the top of the tower is difficult to freely dissolve and mix with the high-temperature and high-concentration ammonium nitrate solution at the bottom , resulting in the working medium not being able to circulate reliably to achieve the effect of heat exchange

On the other hand, since the heater heats the ammonium nitrate solution at the bottom of the tower, the heated ammonium nitrate solution will generate a certain amount of water vapor after being concentrated, and the high-temperature water vapor will move to the middle and upper parts of the tower body, so the inside of the tower It is impossible to form a high-temperature zone at the bottom, an exothermic zone in the middle and a low-temperature zone at the top, and heat exchange is actually impossible

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