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Absorption-type large-temperature-difference heat exchange unit driven by low-temperature hot water

A technology for low-temperature hot water and heat exchange units, which is applied to heating methods, boiler absorbers, and hot water central heating systems, etc., can solve the problems of lowering the temperature of the driving heat source, unsuitable absorption heat exchange units, and the unit cannot operate. Achieve the effect of increasing the temperature difference between the supply and return water, increasing the conveying capacity, and reducing the temperature of the return water

Pending Publication Date: 2020-06-26
TONGFANG ENERGY SAVING ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, due to the working characteristics of the conventional absorption heat exchange unit, the temperature of the driving heat source decreases, resulting in the return water temperature of the primary network being higher than 25°C, and even the unit cannot operate.
Therefore, when the primary network supply water temperature is low in practical applications, it is not suitable for this type of absorption heat exchange unit

Method used

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  • Absorption-type large-temperature-difference heat exchange unit driven by low-temperature hot water

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Embodiment Construction

[0011] see figure 1 , the absorption type large temperature difference heat exchange unit driven by low-temperature hot water of the present invention includes a generator G2, a condenser C, a low-pressure absorber A, an evaporator E, a high-pressure absorber A2, a high-temperature generator G and a water-water plate heat exchanger W .HEX. Low-pressure absorber A and evaporator E form a low-pressure cylinder, high-pressure absorber A2 and high-temperature generator G form a medium-pressure cylinder, generator G2 and condenser C form a high-pressure cylinder, and the low-pressure cylinder and medium-pressure cylinder are arranged separately Or overall arrangement. The circulation system of the unit of the present invention is divided into an external pressurized water circuit and an internal vacuum circuit. The external pressurized waterway is divided into primary network waterway and secondary network waterway. The primary network waterway passes through high-temperature gen...

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Abstract

The invention discloses an absorption-type large-temperature-difference heat exchange unit driven by low-temperature hot water, and relates to the technical field of heat supply equipment. The absorption-type large-temperature-difference heat exchange unit driven by low-temperature hot water comprises a generator, a condenser, a low-pressure absorber, an evaporator, a high-pressure absorber, a high-temperature generator and a water-water plate heat exchanger. The absorption-type large-temperature-difference heat exchange unit driven by low-temperature hot water is structurally characterized inthat the low-pressure absorber and the evaporator form a low-pressure barrel body; the high-pressure absorber and the high-temperature generator form a medium-pressure barrel body; and the generatorand the condenser form a high-pressure barrel body. A circulation system of the absorption-type large-temperature-difference heat exchange unit driven by low-temperature hot water is divided into an external water channel with a pressure, and an internal vacuum loop. Compared with the prior art, the absorption-type large-temperature-difference heat exchange unit driven by low-temperature hot wateris capable of normally running at a temperature of 55-80 DEG C of a drive heat source, effectively reducing a return water temperature of a heat supply network, increasing the temperature differenceof supply water and return water of hot water at a primary side, and improving the conveying capacity of the heat supply network.

Description

technical field [0001] The invention relates to the technical field of heating equipment, in particular to an absorption heat exchange unit used for heating and heating, which can be applied to secondary stations of central heating, utilization of solar hot water, deep utilization of steam condensate, etc. occasion. Background technique [0002] As the scale of urban central heating increases year by year, the high-temperature hot water generated by centralized heat sources needs to be transported over a long distance to reach the heating area. In the case of the same heat supply, increasing the temperature difference between supply water and return water can Reduce the water supply flow, thereby reducing the initial investment in pipelines. At the same time, the power consumption of the water pump can also be reduced, thereby reducing heating energy consumption and heating costs. [0003] In the prior art, the Chinese patent "A heat pump type heat exchange unit" proposes ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24D3/18F25B27/00F25B35/00F25B39/00
CPCF24D3/18F25B27/00F25B35/00F25B39/00F24D2200/126Y02A30/27Y02B30/62
Inventor 李绍飞黄国华谷再丰常晟秦冰
Owner TONGFANG ENERGY SAVING ENG TECH
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