Supplementary combustion lithium bromide absorption heat exchange system that provides two channels of hot water at the same time

Abstract

The invention relates to an afterburning-type lithium bromide absorption heat exchange system capable of simultaneously providing two loops of hot water. The afterburning-type lithium bromide absorption heat exchange system capable of simultaneously providing two loops of hot water comprises a primary network hot water pipeline system (1), a first-loop secondary network hot water pipeline system (2), a second-loop secondary network hot water pipeline system (3), a first heat exchanger (4), a second heat exchanger (5), a hot-water-type lithium bromide absorption unit (6) and a direct-burning-type lithium bromide absorption unit (7), wherein primary network hot water which flows out of the primary network hot water pipeline system (1) firstly enters a generator (604) of the hot-water-type lithium bromide absorption unit (6), comes out, serially enters the first heat exchanger (4) and the second heat exchanger (5), flows through an evaporator (701) of the direct-burning-type lithium bromide absorption unit (7) and finally flows out through the primary network hot water pipeline system (1). The afterburning-type lithium bromide absorption heat exchange system capable of simultaneously providing two loops of hot water has the advantages that under the situations that primary network hot water return water temperature is reduced and effective heat emission temperature difference of primary network hot water is increased, the peak heat supply load of a centralized heat supply system can be borne, the two loops of hot water can be simultaneously provided, the two loops of hot water are mutually independent and the temperature and the pressure can be respectively different.

Description

technical field [0001] The invention relates to a lithium bromide absorption heat exchange system. 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 water is transferred to the seco...

AI Technical Summary

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

Images