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Low Temperature Refrigeration Research of Saturated Gas Generator

Author: WangZhenZuo
Tutor: WangZuo
School: Harbin Engineering University
Course: Mechanical and Electronic Engineering
Keywords: Saturated gas Cryogenic refrigeration system Variable Universe Adaptive Fuzzy Control Dynamic Simulation
CLC: TB65
Type: Master's thesis
Year: 2010
Downloads: 33
Quote: 0
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Abstract


With the humidity measurement technology more and more applications in the industrial field , the development of high performance humidity generator is increasingly important. Wide temperature range , the flow humidity generator by gas preparation subsystem , saturated gas subsystems and test chamber subsystem composed of saturated gas subsystem cryogenic refrigeration system design , and its role is flowing through the subsystem dry air cooling treatment to obtain a low temperature under the condition of saturated moist air . By the analysis of a variety of cryogenic refrigeration method , determined using a single-stage vapor compression refrigeration , and the cryogenic refrigeration system , the design of the overall program . Selection of the main components of the system design , the completion of the detailed design of the system . Cryogenic refrigeration system is a complex nonlinear system , its performance is affected by many interfering factors . Refrigeration system control simulation mathematical model composite adjust the frequency of the compressor and electronic expansion valve opening control method based on the variable universe fuzzy control principle , on the basis of the modeling study and design based on the method of variable universe fuzzy logic controller , the controller has good robustness is verified through simulation analysis . Developed cryogenic refrigeration system prototype , the control system using NI PAC platform , using the the LabVIEW language of the refrigeration system data acquisition software , the experimental study of the performance of the refrigeration system load conditions .

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CLC: > Industrial Technology > General industrial technology > Refrigeration Engineering > Refrigeration machinery and equipment
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