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Phase change heat storage type falling film evaporator

A technology of falling film evaporator and phase change heat storage, which is applied in vertical tube evaporator, evaporator accessories, evaporation, etc., to improve evaporation efficiency, ensure temperature and pressure stability, and solve scaling and non-isothermal heat transfer problems Effect

Pending Publication Date: 2020-12-04
SHANGHAI MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The evaporation device uses the high heat storage density characteristics of phase change materials and the constant temperature characteristics of phase change to realize the stability of temperature and heat flow in the evaporation process. Problems with film evaporators

Method used

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  • Phase change heat storage type falling film evaporator
  • Phase change heat storage type falling film evaporator
  • Phase change heat storage type falling film evaporator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0034] Barium Hydroxide Octahydrate (Ba(OH) 2 ·8H 2 O) is a functional material with great development potential among inorganic phase change heat storage materials. Suitable for storage and temperature regulation of medium and low temperature heat sources. Therefore, this implementation case uses Ba(OH) 2 ·8H 2 O is used as the phase-change heat storage material in the thin-film evaporation tube, and pure water is used as the liquid material for evaporation, and the parameters are set according to their phase-change temperature characteristics. The implementation examples are as follows.

[0035] According to the structural design drawing of the inventive device, each component part of the device is made, and the connection and the potting of the phase change heat storage material are carried out according to the designed structure. After the above preparatory work is completed, according to the working principle of the device, the operation steps are as follows:

[0036...

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Abstract

The invention discloses a phase change heat storage type falling film evaporator which comprises a cavity, a pipe assembly, and a liquid material distributor; the cavity comprises a liquid material chamber, an evaporation chamber and a heating chamber which are arranged in the cavity from top to bottom; the liquid material chamber and the evaporation chamber are separated by a falling film guide plate; the evaporation chamber and the heating chamber are separated by a sealing baffle plate; the pipe assembly comprises a falling film evaporation pipe, a metal heat pipe and a phase change heat storage material; and the liquid material distributor is arranged at the top of the liquid material chamber and is used for uniformly distributing liquid materials. According to the evaporation device,the temperature and heat flow stability in the evaporation process is achieved through the high heat storage density characteristic and the phase change constant temperature characteristic of the phase change material, meanwhile, medium-free flowing heat transfer in the evaporation pipe is achieved through the metal heat pipe, and therefore the problems existing in an existing falling-film evaporator are solved.

Description

technical field [0001] The invention relates to the field of heat storage and heat exchange, in particular to a phase change heat storage falling film evaporator. Background technique [0002] The falling film evaporator is a heat exchanger that uses a distributor to disperse the feed liquid from top to bottom to form a film evaporation on the surface of the heat exchange tube in the heating chamber. The basic principle is to use the thin film evaporation mechanism on the surface of the heat exchange tube. . The falling film evaporator is usually composed of a liquid material distributor, a tube plate, a falling film evaporation tube bundle, an upper chamber, a lower chamber and an evaporation chamber, and can be connected with a vacuum pump system and a gas-liquid separation system. Compared with the traditional evaporator, the falling film evaporator has the advantages of high heat transfer efficiency, fast evaporation and less liquid charge, so it has become a research h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D1/22B01D1/06B01D1/30
CPCB01D1/06B01D1/22B01D1/30
Inventor 华维三章学来甘伟禹国军陆定宇王为纪珺
Owner SHANGHAI MARITIME UNIVERSITY
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