| Summary: | 碩士 === 國立臺北科技大學 === 能源與冷凍空調工程系碩士班 === 105 === At the energy crisis time, the air conditioning must meet the needs of energy saving and life. Early refrigerants were CFCs that were discovered by the scientist would damage the ozone layer and also may remain in the ozone layer for a long time; therefore, that was disabled after the entry into force of the Montreal Protocol in 1989, and instead of that, using the environmental refrigerant of zero ozone depletion potential (Ozone depletion potential, ODP), acceptable to the global warming potential (Global warming Potential, GWP) and high performance coefficient (Coefficient of Performance, COP). Although the carbon hydrogen refrigerant related literature research has achieved energy saving effect about 20%, the carbon hydrogen refrigerant commercially available for gas cold type air-conditioning only could be replaced in proportion. It is unknown whether the frozen oil of original air conditioning system is suitable for for carbon hydrogen refrigerant. Besides, the related pressure protection still need to be adjusted or replaced by professionals, because of the refrigerant stores at room temperature, if it leak, in case of static electricity or fire, it must blow up. The security is a principal and continuous factor which creates to be slowly and unable to promote widely.
Using the two ways of computer simulation and experimental research, It is hoped that the analytical results can be used to infer the feasibility of installing “replace refrigeration ” at refrigeration system. Through the research, we are able to understand the actual operation of R410C HFC refrigeration system under the various models designed by the study, and the performance of different functions of the system and makes VRF multi-association inverter air conditioning system to maintain the best control from before and after energy saving variation of changing system refrigerant.
R410C refrigerant is a combination which can be used in many applications that including in the highly essential and unpredictable excellent properties of heat transfer fluid, and in heat-transfer system based on the combination which contains from approximately 70 to 75 weight percentage of R32 and from approximately 20 to 25 weight percentage of R125.
The experimental results showed that the research developed system can fix the comfort of indoor in the target effectively; besides, the system can fast reduce the energy consumption after using R410C refrigerant which not only has good stability but can overcome the external disturbance factor effectively.
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