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Integral type absorption type heat exchange machine unit

A heat exchange unit and absorption technology are applied in hot water supply equipment and heating fields to achieve the effect of reducing initial investment and power consumption of pump operation, reducing heating cost and improving utilization efficiency.

Active Publication Date: 2008-12-24
北京华源泰盟节能设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the supply and return water temperatures of the central heating primary network are generally around 130 / 60°C. Among them, the return water temperature is limited by the heat requirements of users, and it can no longer be lowered by using conventional heat exchangers.

Method used

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  • Integral type absorption type heat exchange machine unit
  • Integral type absorption type heat exchange machine unit
  • Integral type absorption type heat exchange machine unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Such as image 3 As shown, the unit structure and figure 1 Same, lithium bromide dilute solution and the above-mentioned principle of refrigerant circulation process are the same. exist image 3 In the process, the primary grid water supply at 130°C first enters the generator 1 as a driving heat source, and exchanges heat with the dilute lithium bromide solution in countercurrent to make it evaporate and concentrate. After cooling down to 90°C, it flows out of the generator 1 and enters the water-water heat exchanger 9. The high temperature side is used as a heat source to heat the return water of the secondary network at 45°C, and after cooling down to 50°C, it flows out of the water-water heat exchanger 9, and then as a low heat source, it flows through the high-pressure evaporator 4b and the low-pressure evaporator 4a in sequence, releasing heat and cooling down to After 25°C, it will flow out of the unit as primary return water. The return water from the secondar...

Embodiment 2

[0021] Such as Figure 4 As shown, the unit consists of generator 1, condenser 2, low-pressure absorber 3a, high-pressure absorber 3b, low-pressure evaporator 4a, high-pressure evaporator 4b, solution heat exchanger 5, throttling device 6, solution pump 7, refrigerant Pump 8, water-water heat exchanger 9, solution spray pump 10, mixer (or injector) 11 and various connecting pipelines and accessories. The dilute lithium bromide solution is heated to boiling by 130°C high-temperature hot water in the generator 1, and turns into a concentrated solution after generating steam. After cooling down through the solution heat exchanger 5, it is mixed with the dilute solution and enters the low-pressure absorber 3a, where it is absorbed by the low-pressure evaporator 4a. The refrigerant vapor generated in the cooling system emits heat of absorption, and the concentrated solution is diluted, and then mixed with the concentrated solution from the solution heat exchanger 5 through the mixe...

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Abstract

The invention relates to an integrated absorption heat-exchanging unit, belonging to the field of the heating and hot water supply devices and comprising a hot-water absorption heat-exchanger and a normal water-water heat exchanger which are combined, wherein, the hot-water absorption heat-exchanger adopts the means of two-level evaporation and two-level absorption. The unit comprises a generator, a condenser, a low-pressure absorber, a high-pressure absorber, a low-pressure evaporator, a high-pressure evaporator, a solution heat exchanger, a throttle device, a solution pump, a water-water heat exchanger and various connecting pipes and accessories. The invention can effectively reduce the backwater temperature of a first-time network of a collective heating system, thus greatly raising the temperature difference of between hot water supply and backwater of the first-time network, further greatly reducing the initial investment to the pipeline system and the power cost of the pump running, creating conditions for utilizing the low-quality heat energy even waste heat, etc., enhancing the comprehensive energy utilization efficiency of the system and reducing the heat supply cost.

Description

technical field [0001] The invention belongs to the equipment range of heating and hot water supply, and in particular relates to an integral absorption heat exchange unit capable of greatly increasing the temperature difference between primary network hot water supply and return water of a centralized heating system and exchanging heat efficiently. technical background [0002] With the continuous increase of the scale of urban central heating, the high-temperature hot water generated by centralized heat sources often needs to be transported over a long distance to reach the heat user. In the case of the same heating load, the supply and return of hot water should be increased. The temperature difference can reduce the flow of hot water to be transported, which can reduce the initial investment of transmission and distribution pipelines, and reduce the power consumption of water pumps during system operation. Therefore, it can save heating energy consumption and reduce heati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B15/06F25B30/04
CPCY02A30/27Y02B30/62
Inventor 张世钢任佐民肖常磊郝永刚
Owner 北京华源泰盟节能设备有限公司
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