Abstract
Abstract: All evacuated tube collector is being constantly studied since it can reduce the conductive heat loss in absorber by using vacuum technology and has advantage of heat transport capacity and quick thermal re-sponse in comparatively small temperature difference. This study investigated the dynamic thermal performance of the solar collector with the control condition of solar irradiance and fluid temperature by using performance experimental apparatus which is combined with solar collector and refrigerator, examined the thermal character-istics in definite temperature range of fluid in constant temperature tank by simultaneously measuring refrigerat-ing performance. As a result of it, I deducted the related equation of collector efficiency and found that mean collector efficiency has increased through quick heat transfer characteristics according to increase of outdoor temperature and irradiance in case of outlet temperature of constant temperature tank 22℃ when set outlet tem-perature of solar collector 25℃ with outlet temperature of constant temperature tank 18℃ & 22℃. Also COP of refrigerator was acquired value of 6.2~7.1 at outlet temperature of constant temperature tank 18℃.
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