Heat exchange device for variable working conditions

Abstract

The invention relates to the technical field of heat exchange equipment and provides a heat exchange device for variable working conditions. The heat exchange device comprises a housing, channels, first partitions and second partitions, wherein the first partitions are arranged in the housing in a manner of extending in the axial direction of the housing so as to divide the internal space of the housing into a plurality of shell pass spaces; the second partitions are arranged in the channels in a manner of extending in the axial directions of the channels so as to divide the internal spaces ofthe channels into tube pass spaces in one-to-one correspondence with the shell pass spaces; first inlet pipes and first outlet pipes, which are in one-to-one correspondence with the shell pass spaces, are arranged on the outer wall of the housing; second inlet pipes and second outlet pipes, which are in one-to-one correspondence with the tube pass spaces, are arranged on the outer walls of the channels; and valves are arranged on the first inlet pipes, the first outlet pipes, the second inlet pipes and the second outlet pipes. The heat exchange device guarantees the heat exchange effect underthe variable working conditions, as well as the stability of the outlet temperatures of the first outlet pipes and the second outlet pipes, and the occupied area can be greatly reduced.

Description

technical field [0001] The invention relates to the technical field of heat exchange equipment, in particular to a heat exchange device for variable working conditions. Background technique [0002] At present, gas-liquid heat exchangers are designed for specific working conditions. In application, the actual working conditions of the gas heat exchanger often change. For example, when the gas side flow rate decreases, the gas side flow rate will decrease rapidly, which will lead to a decrease in the gas side heat transfer coefficient, resulting in insufficient heat transfer. , that is, the gas outlet temperature decreases and the liquid outlet temperature increases. For a closed-loop thermodynamic cycle, insufficient heat exchange will lead to a vicious cycle. [0003] In the prior art, multiple heat exchangers are often connected in parallel to solve the problem of insufficient heat exchange due to changes in actual working conditions, but this often requires the addition...

AI Technical Summary

Problems solved by technology

In application, the actual working conditions of the gas heat exchanger often change. For example, when the gas side flow rate decreases, the gas side flow rate will decrease rapidly, which will lead to a decrease in the gas side heat transfer coefficient, resulting in insufficient heat transfer. , that is, the gas outlet temperature decreases, and the liquid outlet temperature increases

For a closed-loop thermodynamic cycle, insufficient heat transfer will lead to a vicious cycle

[0003] In the prior art, multiple heat exchangers are often connected in parallel to solve the problem of insufficient heat exchange due to changes in actual working conditions, but this often requires the addition of additional pressure vessels and pipelines, which not only increases the cost, but also Increased footprint and heat leakage

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