Supplementary combustion lithium bromide absorption heat exchange system with simultaneous heating by two channels of water

Abstract

The invention relates to a supplementary-fired lithium bromide absorption type heat exchange system with two routes of water simultaneously supplying heat, which belongs to the technical field of air-conditioning equipment. The supplementary-fired lithium bromide absorption type heat exchange system comprises a primary network hot water pipeline system (1), a first-route secondary network hot water pipeline system (2), a second-route secondary network hot water pipeline system (3), a first heat exchanger (4), a second heat exchanger (5), a hot water type lithium bromide absorption type unit (6) and a direct-fired lithium bromide absorption type unit (7); the primary network hot water flowing out of the primary network hot water pipeline system (1) sequentially enters a generator (604) of the hot water type lithium bromide absorption type unit (6), the first heat exchanger (4) and the second heat exchanger (5) and finally flows through an evaporator (701) of the direct-fired lithium bromide absorption type unit (7); the hot return water flowing out of the first-route secondary network hot water pipeline system (2) flows out via the first heat exchanger (4) and then the first-route secondary network hot water pipeline system (2). While decreasing the temperature of primary network hot return water, the supplementary-fired lithium bromide absorption type heat exchange system also can bear the peak heating load of a centralized heating system.

Description

technical field [0001] The invention relates to a supplementary combustion type lithium bromide absorption heat exchange system in which two channels of water supply heat at the same time. It belongs to the technical field of air conditioning equipment. Background technique [0002] In the conventional central heating system, after the hot water of the primary network is heated at the heat source, it is sent to each heat user through the heating pipe network, and after the heat exchange and cooling of the hot water of the secondary network at each heat user place through the heat exchanger, it is then Return to the heat source through the heating pipe network to heat up. [0003] Common heat exchangers used at various heat users such as figure 1 As shown (water-water heat exchanger in the figure), the hot water of the primary net and the hot water of the secondary net are exchanged through heat exchange tubes (shell-and-tube heat exchangers) or heat exchange surfaces (plat...

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Problems solved by technology

[0005] In addition, because the central heating system needs to meet the heating demand in the coldest weather, the heating pipe network is designed and constructed according to the maximum heating load, but most of the time in the actual operation of the heating system is Operate under part of the heating load, which causes a waste of heating capacity of the heating pipe network

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