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Steam type first-class lithium bromide absorption type heat pump units with dual-effect refrigeration function

A lithium bromide absorption and heat pump unit technology, which is applied in refrigerators, adsorption machines, refrigeration and liquefaction, etc., can solve problems such as waste and high-grade energy consumption, and achieve energy saving effects

Active Publication Date: 2009-04-08
SHUANGLIANG ECO ENERGY SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the first type of lithium bromide absorption heat pump unit is used for refrigeration with the same process, it can only operate in single effect. Since the driving heat source provided by the first type of lithium bromide absorption heat pump is of high grade, most of them are steam above 0.4Mpa or other high temperature heat sources. Double-effect operation can be used for refrigeration. The cooling COP of single-effect operation is about 0.8, and the cooling COP of double-effect operation can reach 1.4. Compared with double-effect operation, single-effect operation needs to consume 75% more high-grade energy. The energy saved by the first type of lithium bromide absorption heat pump heating is wasted in summer single-effect cooling

Method used

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  • Steam type first-class lithium bromide absorption type heat pump units with dual-effect refrigeration function
  • Steam type first-class lithium bromide absorption type heat pump units with dual-effect refrigeration function
  • Steam type first-class lithium bromide absorption type heat pump units with dual-effect refrigeration function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The unit shown in Figure 3, this unit is based on the previous steam double-effect lithium bromide absorption chiller shown in Figure 1, and the steam heat exchange tube bundle 14 of the steam generator of the steam type first lithium bromide absorption heat pump shown in Figure 2 and the low-efficiency heat exchange tube bank 12 of the low-pressure generator are placed in a cylinder to form a composite generator 10, and the steam heat exchange tube bank 14 and the low-efficiency heat exchange tube bank 12 are arranged up and down. The solution heat exchanger and the low-temperature solution heat exchanger of the heat pump share a low-temperature solution heat exchanger 4 . The unit consists of a steam high-pressure generator 1, a composite generator 10, an evaporator 6, an absorber 5, a condenser 9, a high-temperature heat exchanger 2, a condensate solution heat exchanger 3, a low-temperature solution heat exchanger 4, and a solution pump 7 . Refrigerant pump 8. Steam-...

Embodiment 2

[0017] Embodiment 2: As shown in Figure 4, on the basis of Invention 1, the steam heat exchange tube bundle 14 and the low-emission heat exchange tube bundle 12 are arranged left and right. In the heating mode of the heat pump, the dilute solution is sprayed onto the steam heat exchange tube bundle 14 through the dilute solution entering composite generator spray pipe 15 . In the double-effect cooling mode, the intermediate solution from the high-pressure generator 1 enters the spray pipe 11 of the composite generator through the intermediate solution and sprays onto the low-fire heat exchange tube bundle 12 in the composite generator 10 .

[0018] The above scheme is applicable to the two-stage type of condenser, evaporator and absorber. Hot water (cooling water) parallel flow, series flow. The driving heat source can be not only steam, but also high-temperature hot water, heat transfer oil, etc.

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Abstract

The invention relates to a first type lithium bromide absorption heat pump unit with double-effect refrigeration function, comprising a high-pressure steam generator (1), a composite generator (10), an evaporator (6), an absorber (5), a condenser (9), a high temperature heat exchanger (2), a heat exchanger (3) for condensate solution, a low temperature heat exchanger (4), a solution pump (7) and a cryogenic fluid pump (8). A steam heat exchanger pipe bundle (14) and a low heat exchanger pipe bundle (12) are both arranged in a cylinder to form the composite generator (10); a sprayer (15) for the dilute solution to enter into the composite generator and a dilute solution switching valve II (18) are both added at an entrance of the low temperature solution heat exchanger (4); a dilute solution switching valve I (17), a working steam switching valve I (21), a working steam switching valve II (22), a concentrated solution control valve (19) and a cryogen water adjusting device (20) are added on corresponding pipelines. With double-effect refrigeration operation function in summer, the first type lithium bromide absorption heat pump unit with double-effect refrigeration can not only meet the functions of refrigeration in summer and heating in winter, but also greatly save the energy.

Description

(1) Technical field [0001] The invention relates to a steam-type first-class lithium bromide absorption heat pump unit with double-effect refrigeration function. It belongs to the technical field of refrigeration equipment. (2) Background technology [0002] At present, there are a large number of low-grade heat sources below 60 °C in the oil field, chemical industry, metallurgy, coking and other industries such as oil production separation water, process wastewater, and low-temperature waste water. At the same time, we need a large number of medium-temperature heat sources in the production process. , such as the heating and separation of oil-water mixture in the oil production process, heating and transportation of crude oil, refilling heating water at the wellhead of oil production, etc. In addition, my country needs a large amount of medium-temperature hot water for heating in winter in the area north of the Yellow River. In areas where heat sources are required in pro...

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 毛洪财
Owner SHUANGLIANG ECO ENERGY SYST CO LTD
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