Lithium Bromide Absorption Heat Exchange System with Supplementary Combustion

Abstract

The invention relates to an after-burning lithium bromide absorption type heat exchange system, which belongs to the technical field of air conditioning equipment and comprises a primary network hot water pipeline system (1), a secondary network hot water pipeline system (2), a heat exchanger (3), a hot water type lithium bromide absorption type machine unit (4) and a direct burning type lithium bromide absorption type machine unit (5), wherein primary network hot water from the primary network hot water pipeline system (1) firstly enters a generator (404) of the hot water type lithium bromide absorption type machine unit (4) and then enters the heat exchanger (3), hot water return water from the secondary network hot water pipeline system (2) is connected in parallel to be divided into two paths, one path firstly flows through an evaporator (401) of the hot water type lithium bromide absorption type machine unit (4) and an evaporator (501) of the direct burning type lithium bromide absorption type machine unit (5), and then enters the heat exchanger (3), and the other path flows through an absorber (402), a condenser (403), an absorber (502) and a condenser (503) in a parallel connection, any sequence serial connection or serial and parallel connection form. The system can realize the goals of increasing effective temperature differences of the primary network hot water and bearing the peak load of a heat supply pipe network.

Description

technical field [0001] The invention relates to a lithium bromide absorption heat exchange system with supplementary combustion. 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 (plate heat exchangers) , the heat in the primary network hot wa...

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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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