Shell and tube heat exchanger, control method thereof and heat pump unit

Abstract

The invention provides a shell and tube heat exchanger, a control method thereof and a heat pump unit. The shell and tube heat exchanger comprises a shell and a heating piece, wherein a first fluid circulation channel is formed in the shell, and the heating piece is arranged in the shell and used for heating the first fluid in the circulation channel. According to the shell and tube heat exchanger, the heating piece is arranged in the shell and tube heat exchanger, the space of the heat exchanger is reasonably utilized, the heating effect can be well achieved, the problems that the low-temperature heat exchange efficiency is low and starting cannot be achieved are solved, and the heat exchanger is simple in structure and easy to assemble.

Description

technical field [0001] The application belongs to the technical field of heat pump units, and in particular relates to a shell-and-tube heat exchanger, a control method thereof, and a heat pump unit. Background technique [0002] As a heat exchange device, the shell and tube heat exchanger is widely used in commercial air conditioning units and refrigeration equipment due to its high heat exchange efficiency, convenient installation and medium liquid storage function. The shell and tube heat exchanger under the current conditions generally only considers the use environment under normal temperature conditions, but in some extreme low temperature environments, the heat exchange efficiency of the shell and tube heat exchanger will be greatly reduced, and even the heat exchange rate will be reduced. The system cannot start normally. [0003] In the prior art, an electric heating module is generally added outside the system, or an electric heating system is added outside the un...

AI Technical Summary

Problems solved by technology

The shell and tube heat exchanger under the current conditions generally only considers the use environment under normal temperature conditions, but in some extreme low temperature environments, the heat exchange efficiency of the shell and tube heat exchanger will be greatly reduced, and even the heat exchange rate will be reduced. The system cannot start normally

[0003] In the prior art, an electric heating module is generally added outside the system, or an electric heating system is added outside the unit to heat the shell-and-tube heat exchanger, so as to increase the heat transfer coefficient; High, complex functions

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