Fused salt electric-auxiliary thermal constant-parameter hot air heat exchanger

Abstract

The invention relates to a fused salt electric-auxiliary thermal constant-parameter hot air heat exchanger. The hot air heat exchanger mainly comprises a framework main body, an inlet cavity and an outlet cavity which are correspondingly formed in the bottom and the top of the framework main body, an inlet and an outlet are correspondingly formed in the inlet cavity and the outlet cavity, and theinlet is communicated with an external molten salt supply device; the hot air heat exchanger further comprises a plurality of rows of finned tubes embedded in the frame body, two ends of each finned tube are correspondingly communicated with the inlet cavity and the outlet cavity, at least one row of electric heating tubes are arranged on the rear side of a heating tube, and adjacent tube rows arearranged in a staggered mode. According to the fused salt electric-auxiliary thermal constant-parameter hot air heat exchanger is used for the condition that the flow, the air pressure and the temperature of the air side are require to be constant by a technology, when the technology requires the temperature change, the electric heating tubes are controlled to be opened or closed according to theset hot air temperature, so that the row number of the electric heating tubes is adjusted, and the technical problem that certain production process heat carrier parameters need to be kept constant is solved.

Description

technical field [0001] The invention relates to the technical field of heat exchange equipment, in particular to a constant parameter hot air heat exchanger for molten salt electric auxiliary heating. Background technique [0002] With the continuous progress of society and the improvement of people's living standards, the demand for various aspects and the energy consumption are also increasing. Due to its unique advantages such as good heat transfer performance, high operating temperature and low price, molten salt has attracted more and more attention in energy utilization. Molten salt generally refers to a mixture of salts such as nitrate and fluoride salts. It has thermal properties such as large specific heat capacity and low saturated vapor pressure. It is very suitable for use as a heat transfer and heat storage medium. As a heat medium, it has broad applications in industrial heat exchange. Application prospects. However, there is relatively little data on the des...

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Problems solved by technology

However, for the hot air drying process, the flow rate, wind pressure and temperature of the air side are required to remain unchanged, so it is impossible to change the flow rate of the air side as a means of temperature control, and only the molten salt side with a large heat transfer coefficient can be changed. The design concept of the constant parameter hot air heat exchanger for molten salt electric auxiliary heat is contradictory

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