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

Abstract

The invention relates to a lithium bromide absorption heat exchange system capable of simultaneously providing two loops of hot water. The 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) and a hot-water-type lithium bromide absorption unit (6), wherein primary network hot water which flows out of the primary network hot water pipeline system (1) firstly enters a generator (606), then serially enters the first heat exchanger (4) and the second heat exchanger (5) and finally flows out through the primary network hot water pipeline system (1); part of hot water return water which flows out of the second-loop secondary network hot water pipeline system (3) enters an evaporator (601) and the second heat exchanger (5), and the other part of hot water return water which flows out of the second-loop secondary network hot water pipeline system (3) and hot water return water which flows out of the first-loop secondary network hot water pipeline system (2) respectively flow through an absorber, a condenser and the first heat exchanger (4). The lithium bromide absorption heat exchange system capable of simultaneously providing two loops of hot water has the advantages that the reduction of primary network hot water return water temperature is realized and the two loops of secondary network hot water with different temperature and pressure can be simultaneously provided.

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

However, due to the temperature resistance limit of the heating pipe network, the temperature of the hot water supply in the primary network cannot be too high

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