| Summary: | 碩士 === 國立勤益科技大學 === 資訊管理系研發科技與資訊管理碩士在職專班 === 103 === Taiwan lies in subtropical area which is hot and humid. Because Taiwan is a narrow area with high population density and lots of buildings. The air conditioning system is the basic facility. In addition to providing a comfortable living environment, the plant process cooling, thermostatic district hospital environment or power plant heat radiation equipment… etc., as long as using water as cooling media, water-cooled air conditioners will be needed. In the design of general air conditioning system, the air conditioning host usually make tonnage for maximum load design, hence, it leads to oversize air conditioning system capacity of domestic buildings and production plant. In addition, most pumps in air conditioning ancillary equipment still under scheduled water system, which is responsible for supplying the whole day needed load of systems. Besides, it can not adjust its flow with the system load changes; In ancillary equipment in air-conditioning fan , the majority is also fixed air volume system, the change can not be controlled according to the outside weather conditions. The design above result in not only poor operating efficiency throughout the day, but too much cost in unnecessary energy, excessive emissions of greenhouse gases, rapidly increasing global warming.
The purpose of this study is to "performance improvement of water-cooled air conditioner". According to "CNS14464 no duct air conditioner and heat pump test method" of T1 test conditions, the test conducted under the state of indoor inlet air temperature of 27℃DB / 19℃WB. Application of Six Sigma practices, Define, Measure, Analyze, Improve, Control steps, with the parameters set of Taguchi method to find the best, find out the cooled air conditioning machine performance settings, the optimal combination of experimental results. Experimental results showed that the process capability (Cpk) has upgraded from the 1.04 to 1.48 which revealed that the "water-cooled air conditioners' energy efficiency ratio target has significantly improved. Whereas, test under the base could also make equipment rated energy efficiency ratio of 99%, compare with the unadjusted one, increased 15%. It indicated that the performance of water-cooled air conditioners has improved. Furthermore, the results of this study also provide reference for air conditioning industry-related equipment improved performance verification.
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