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Simulation of Precision Air Conditioning Liebert FH290A

Author: ZhaoXinYu
Tutor: DuanYuBoï¼›WuJunFeng
School: Daqing Petroleum Institute
Course: Control Engineering
Keywords: refrigeration air-conditioning simulation
CLC: TB657.2
Type: Master's thesis
Year: 2005
Downloads: 118
Quote: 0
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Abstract


Refrigerating air-conditioning system is one of the most energy-consuming systems. How to improve its performance and reduce its energy consumption is always a key problem. With the help of simulation technique people can use computer effectively and system performance can be ameliorated considerably. All of these make the design of air-conditioning products step into modernization.It is necessary to analyze refrigerant, thermostatic expansion valve, compressor, evaporator and condenser. After analyzing the system structure and vapor compression refrigeration cycle of precision air conditioning, polynomial simulation for refrigerating agent R22, flux and power characteristic analysis of refrigerating compressor, capacity and stability analysis of thermostatic expansion valve, simulation mathematics models for evaporator and condenser, we build the input and output function for the components of LIEBERT FH290A. The total model consisted of four partial models of evaporator, condenser, thermostatic expansion valve and compressor. With the equalization of energy, momentum and quality, the models of the four main sectors above could be connected and solved so as to form the total system model. Because the simulation is non-linear, we use MATLAB to simulate this process. The advantage of this method is time-saving.The comparing of the calculation results with the experiment at the same state has verified the accuracy of the model.The computer simulation has grown to be a useful method and a strong tool to study the performance of refrigeration and air conditioning system and to design the system optimally. The basic features and the theories are analyzed such model theory and simulation algorithms. The newest achievements and the faultiness are mentioned for the development of computer simulation on refrigeration and air conditioning system in future.

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