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Double-temp-raising produced overcooling absorption and single effect, afterheat absorbing refrgerating system

A technology of temperature rise and subcooling, which is applied in refrigerators, adsorption machines, refrigeration and liquefaction, etc., can solve the problems of small temperature difference between the inlet and outlet of heat source working fluid, low COP value, high initial investment, etc., and achieve compact equipment and absorption effect Enhanced, low heat source temperature effect

Inactive Publication Date: 2005-01-12
UNIV OF SHANGHAI FOR SCI & TECH
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AI Technical Summary

Problems solved by technology

At present, the low-temperature heat-driven lithium bromide absorption refrigerator can use a heat source temperature above 80°C, and the temperature difference between the inlet and outlet of the heat source working fluid is relatively small (hot water is about 10°C), coupled with large volume, high initial investment, and low COP value (about 0.7), Therefore, it cannot be generally accepted by the market

Method used

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  • Double-temp-raising produced overcooling absorption and single effect, afterheat absorbing refrgerating system
  • Double-temp-raising produced overcooling absorption and single effect, afterheat absorbing refrgerating system

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Embodiment Construction

[0008] Depend on figure 1 and figure 2 As shown in the figure, the double temperature rise occurs in the supercooling absorption single-effect waste heat absorption refrigeration system. 5 enters the evaporator 6, in the evaporator 6, the refrigerant water is vaporized into low-pressure refrigerant water vapor, and at the same time absorbs the heat of the refrigerant water to produce a refrigeration effect, in the absorber 10 The concentrated lithium bromide solution from the solution heat exchanger 12 is used as the The absorbent absorbs the low-pressure refrigerant water vapor 5 from the evaporator 6. In order to increase the absorption capacity and take away the absorption heat released in the absorption process, the lithium bromide solution is cooled with cooling water, and the solution is diluted and then pumped into the solution with the solution pump 11. The heat exchanger 12 exchanges heat with the concentrated lithium bromide solution, and the dilute solution that a...

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Abstract

Heat exchanger of working medium of solution heat source and heat exchanger of solution cold water added to system based on single action absorption type cooling distribution system makes dilute solution passing through solution heat exchanger and before entering into generator be preheated in new added heat exchanger of working medium of solution heat source by heat source working medium discharged from generator. Dual temperature rise is realized in circulation. Before entering into absorber, the strong solution is pre-cooled in new added heat exchanger of solution cold water. The two added heat exchanger constitute new circulating flow, parameters of the circulating state are changed. Module functions are enhanced. Available temp of heat source is even lower. Difference in temp of heat source working medium between in and out absorption type refrigerate machine is increased so that machine is compact.

Description

technical field [0001] The invention relates to a double-temperature-rise supercooling absorption single-effect waste heat absorption refrigeration system used in refrigeration and air-conditioning industries. Background technique [0002] At present, low-temperature heat-driven lithium bromide absorption refrigerators generally use single-effect absorption refrigeration cycles. figure 1 , in the figure, 1 is high pressure water vapor, 2 is condenser, 3 is cooling water inlet, 4 is cooling water outlet, 5 is throttling device, 6 is evaporator, 7 is refrigerant water outlet, 8 is refrigerant water inlet, 9 is the low pressure refrigerant water vapor, 10 is the absorber, 11 is the solution pump, 12 is the solution heat exchanger, 13 is the generator, 14 is the heat source working fluid in, 15 is the heat source working fluid out. The high-pressure refrigerant water vapor releases heat to the cooling water in the condenser, condenses into refrigerant water, and enters the evap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B15/06
CPCY02B30/62Y02A30/27
Inventor 崔晓钰李美玲徐之平唐聪
Owner UNIV OF SHANGHAI FOR SCI & TECH
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