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Jet flow circulated sprinkling falling-film evaporator

Inactive Publication Date: 2008-06-04
SHANGHAI MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a jet circulation spray falling film evaporator to solve many problems existing in the existing flooded and falling film evaporators

Method used

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  • Jet flow circulated sprinkling falling-film evaporator
  • Jet flow circulated sprinkling falling-film evaporator
  • Jet flow circulated sprinkling falling-film evaporator

Examples

Experimental program
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Embodiment Construction

[0021] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0022] see Figure 4 and Figure 5 , a jet circulation spray falling film evaporator, comprising an evaporator shell 15, a gas outlet 11 arranged on the upper part of the evaporator shell 15, a heat exchange tube bundle 14 axially arranged in the evaporator shell 15, a distributor 13, a gas The liquid separator 12, the distributor 13 is located above the heat exchange tube bundle 14, and the gas-liquid separation membrane 12 is located between the distributor 13 and the gas outlet 11, and also includes a jet pump 17, the inlet 171 of the high-pressure refrigerant of the jet pump 17 A solenoid valve 18 communicates with the condenser 19 , the circulating refrigerant inlet 172 communicates with the bottom of the evaporator shell 15 , and the mixed ...

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Abstract

A fluidic circulation spray falling film evaporator comprises an evaporator shell, a gas outlet arranged on the upper part of the evaporator shell, a heat-exchange tube bundle, a distributor and a gas-liquid separator which are axially distributed in the evaporator shell; the distributor is positioned on the upper part of the heat-exchange tube bundle; the gas-liquid separator is positioned between the distributor and the gas outlet; the invention also comprises a fluidic pump; the high-pressure refrigerant inlet of the fluidic pump is communicated with a condenser; the circulating refrigerant inlet is communicated with the bottom of the evaporator shell; the mixed refrigerant outlet is communicated with the distributor. Compared with the prior art of the pumpless spray falling film type evaporator, the invention can reduce the heat-exchange area of the evaporator by 10 percent around. Compared with the prior art of the pump spray falling film type evaporator, the invention consumes no circulation pump power, therefore, the invention is a spray falling film type evaporator technology with high performance-cost ratio.

Description

technical field [0001] The invention relates to the technical field of evaporators, in particular to a jet circulation spraying falling film evaporator. Background technique [0002] In the vapor compression refrigeration cycle, the commonly used evaporators mainly include plate heat exchangers and shell and tube heat exchangers. The shell and tube type also includes dry type, flooded type and falling film type. [0003] Such as figure 1 As shown, the basic method of the flooded evaporator is that the enhanced heat exchange tube 03 inside and outside the evaporator is immersed in the refrigerant 04 liquid, and the refrigerant 04 absorbs the heat of the water in the heat exchange tube 03 and then evaporates. What it does is a kind of Pool boiling heat exchange. Due to the static pressure of liquid refrigeration system in the flooded evaporator, the pressure of the liquid refrigerant at the bottom is relatively high, so the temperature of the corresponding refrigerant satur...

Claims

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Application Information

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IPC IPC(8): F25B39/02F28D5/02
CPCF25B2341/0016
Inventor 孙文哲张林翟少斌张立华傅秉恒
Owner SHANGHAI MARITIME UNIVERSITY
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