Heat supplying system

Abstract

The invention provides a heat supplying system which comprises a heat source system, a heat exchanger, an absorption heat pump and a water path system. The absorption heat pump comprises a generator, a condenser, an absorber and an evaporator. The water path system comprises a primary side water path and a secondary side water path. A heating channel of the heat source system, a heating channel of the heat exchanger and the evaporator are sequentially in serial connection into the primary side water path. The secondary side water path comprises a first branch and a second branch which are in parallel connection, the absorber and the condenser are in serial connection to the first branch, and a heated channel of the heat exchanger and the generator are in serial connection into the second branch. According to the heat supplying system, the resistance overcome by the primary side water path is the sum of the heat exchanger, the absorption heat pump and the evaporator. Compared with the prior art, the hot water resistance on the primary side is effectively reduced, a primary side water pump is removed, and the system is simpler. In addition, the resistance is reduced, the flow speed in the evaporator is increased, the evaporator can be designed with the larger flow number, and the heat exchanging efficiency of the evaporator is improved.

Description

technical field [0001] The invention relates to the technical field of heat supply, in particular to a heat supply system. Background technique [0002] With the development of my country's economy, people's living standards are improving day by day. The phenomenon reflected in the heat supply is that it is increasingly difficult for the heat supply network to meet the rapidly growing demand for heat supply. Since the thermal station usually uses a plate heat exchanger, limited by the heat exchange end difference, the return water temperature of the primary network must be higher than the return water temperature of the secondary network. In order to improve the heat supply capacity, the only way to increase the heat supply pipe network is to expand The temperature difference between supply and return water can expand the heating radius of the centralized heat source, save heating energy consumption and reduce heating costs. In Fu Lin et al.’s “Absorptive Heat Exchange Uni...

AI Technical Summary

Problems solved by technology

In Fu Lin et al.’s “Absorptive Heat Exchange Unit Combined with a Boiler” (patent application number: 201310447284.4), the water resistance on the primary side is relatively large, the flow velocity in the generator and evaporator tubes is low, and the heat transfer coefficient is not high. , resulting in a larger unit volume and complicated control methods for the water system

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