Fixed outlet temperature and pressure type flooded heater

Abstract

The invention relates to a fixed outlet temperature and pressure type flooded heater. A baffle is welded in a heater housing, so that a fluid entering the heater can be uniformly heated; an electric heating wire is sleeved with a molecular sieve, so that residues of the electric heating wire during burst due to local high temperature are prevented from entering a heating working medium to influence system running; and the electric heating wire is in threaded connection with the heater housing by adopting a flange, so that electric heating wires of different power can be conveniently replaced. When the heating working medium flows through the heater, the electric heating wire is completely dipped in the heating working medium to completely convert electric energy into fluid internal energy, and an electronic expansion value is used for adjusting the pressure of the fluid at an outlet of the heater to reach a required set value. According to the heater, when the working medium is heated, heat in the housing can be completely converted, and the pressure of the working medium at the outlet of the heater can be adjusted, so that a possibility is provided for precision control of the temperature and pressure values of the working medium in a specific state.

Description

technical field [0001] The invention relates to a refrigeration system used in new energy, petrochemical, seawater desalination and other industries, especially a flooded electric heater in the refrigeration system, which can realize the temperature, pressure, etc. Parameter precision control. Background technique [0002] In various technical fields involving heat exchange, electric heaters have become indispensable equipment. They are mainly used to heat up and heat flowing liquid and gaseous media. When heating the cavity, the principle of fluid thermodynamics is used to uniformly take away the huge heat generated by the heating element during work, so that it can reach the set temperature requirements. However, ordinary electric heaters only wind the heating wire outside the tube, and adjust the heating power by adjusting the input voltage to adjust the heating capacity of the working medium. Considering many factors such as radiation, convection, and heat conduction, t...

AI Technical Summary

Problems solved by technology

However, ordinary electric heaters only wind the heating wire outside the tube, and adjust the heating power by adjusting the input voltage to adjust the heating capacity of the working medium. Considering many factors such as radiation, convection, and heat conduction, this heating method is nothing more than completely converting the heating capacity The internal energy of the working fluid makes it difficult to achieve a qualified heat balance effect, which in turn affects the control accuracy of the working fluid state

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