| Summary: | 碩士 === 崑山科技大學 === 機械工程研究所 === 102 === The current thesis belonged to an innovative idea, in which HPES-01S “energy-saving split-type air conditioner” was developed. The current study focused on the use of four-way valve to change refrigerant direction in traditional split-type air conditioner, with the aim to improve shortcomings such as energy mismatch and insufficient efficiency. Based on the split-type air conditioner available on the market as the prototype, the current study installed the refrigerant solenoid valve, redesigned the piping system, and divided the heat exchanger into two unequal areas. Cool air was exclusively generated from the evaporator, and warm air was always produced by the condenser. During of the operation, functions of cooling and heating could be switched anytime with the switching mechanism of the solenoid valve, which not only effectively improved the shortcoming of using the four-way valve in traditional air conditioners but also equipped the proposed air conditioner with quick cooling/heating switch function and heat pump technology that effectively reached the goal of energy saving and high efficiency.
Relevant tests on the proposed HPES-01S air conditioner revealed that the cooling／heating function could be switched instantly. Time needed for warming up the air to 37.1℃ was 158 seconds, while only 90 seconds were needed to cool the air down to 21.7℃. Compared with longer time needed for traditional air conditioner equipped with four-way valve to switch its cooling／heating function, the proposed air conditioner significantly enhanced the operation efficiency of the system.
In addition, 0.294 times of electric power was needed for the proposed air conditioner to reach the same amount of thermal energy as electric radiators, outperforming electric radiators in saving at least 70.7% of energy.
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