Heating system for high-efficiency and energy-saving heat exchanger

Abstract

The invention discloses a heating system for a high-efficiency and energy-saving heat exchanger, which comprises a district heating system and a PCD controller, wherein the district heating system is provided with a high-efficiency and energy-saving heat exchanger which is connected with a city heat supply network through a steam valve; the PCD controller comprises a PID algorithm control unit; and the PID algorithm control unit controls the steam valve, a drain valve, a circulating water pump and the like by adopting three groups of PID control loops and detecting parameters such as system pressure, temperature and the like, and can be used for respectively carrying out PID algorithm control for starting control of the heat exchanger, normal heat exchange temperature regulation and variable frequency control of the heat supply circulating water pump, thereby realizing the purposes of energy saving, high heat exchange efficiency and easy control of water supply temperature.

Description

technical field [0001] The invention relates to a heat supply system of a heat exchanger, in particular to a high-efficiency energy-saving heat supply system of a heat exchanger. Background technique [0002] In the long and cold winter, there is a fairly long heating period in northern China every year. At present, the heating method mostly adopts the district heating method, and the district heating system exchanges heat with the urban heat network through heat exchange equipment to provide heating for specific areas. [0003] In the district heating system in the prior art, the opening degree of the steam valve of the heat exchange equipment is fixed and cannot be automatically adjusted with the change of the secondary water supply temperature. The output flow is always constant and cannot change with the heating load. [0004] There are following shortcoming above-mentioned: [0005] Traditional heat exchanger equipment has low heat exchange efficiency and large heat ...

AI Technical Summary

Problems solved by technology

[0005] Traditional heat exchanger equipment has low heat exchange efficiency and large heat exchange energy loss, which is not conducive to energy-saving operation;

[0006] The output flow of the circulation pump and the water supply pump cannot change with the heating load and the pressure of the pipe network, and the power loss is serious;

[0007] The secondary water supply temperature is difficult to control and stabilize

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