absorption generation heat exchange type absorption refrigeration cycle

Abstract

The invention discloses a type of absorption generation heat-exchange absorptive refrigeration circulation, which comprises a high-pressure generator, a high-pressure condenser, a low-pressure generator, a condenser, an absorber, an evaporator, a heat regenerator and an absorption generation heat exchanger, wherein the absorption generation heat exchanger comprises a high-pressure absorber and a second low-pressure generator; the high-pressure absorber is communicated with the high-pressure condenser and the low-pressure generator respectively; the second low-pressure generator is communicated with the low-pressure generator and the condenser respectively; the pressure in the high-pressure absorber is equal to the pressure in the high-pressure generator; the pressure in the second low-pressure generator is equal to the pressure in the low-pressure generator. The working ways of the absorption generation heat-exchange absorptive refrigeration circulation include single-effect circulation, dual-effect circulation and variable-efficiency circulation, and the absorption generation heat-exchange absorptive refrigeration circulation has higher adaptability to heat sources, and is particularly suitable for solar refrigeration systems taking a medium-temperature solar heat collector as a heat source.

Description

technical field [0001] The invention relates to an absorption refrigeration cycle, in particular to an absorption generation heat exchange type absorption refrigeration cycle with a variable efficiency number. Background technique [0002] The energy crisis and environmental damage have been problems that have plagued the development of all mankind since the last century. While developing their economies, countries around the world have also begun to notice the damage caused by these problems to the sustainability of human development. The development of air-conditioning systems that use refrigerants that may cause ozone depletion and greenhouse effects as working fluids and consume a lot of electric energy is also facing the same problem. [0003] The first is the energy consumption of the air-conditioning system. The electricity consumption of the air-conditioning system accounts for a large proportion of the country's total energy consumption in summer, which is a great b...

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Problems solved by technology

[0006] There are still many problems in absorption refrigerators. For example, the operation of lithium bromide absorption units is limited by freezing point and crystallization, and is limited by corrosion problems at high temperatures; the operation of ammonia water absorption units is due to high system pressure. cause some harm

In addition, the heat source temperature range that conventional absorption units can adapt to is not large, which is unfavorable for the utilization of low-grade heat sources

For example, if a solar absorption refrigeration system uses a low-temperature solar collector, it is difficult to reach the heat source temperature required by a single-effect absorber throughout the day due to the instability of solar radiation; and it is difficult to use a medium-temperature solar collector as a heat source. The temperature of the heat source required by the double-effect absorption machine has been reached, and it is too wasteful to supply heat to the single-effect absorption machine

[0007] Therefore, those skilled in the art are devoting themselves to the development of an absorption-generating heat-exchanging absorption refrigeration cycle to improve the current situation that the conventional absorption refrigeration cycle can adapt to a narrow range of heat source temperature.

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