A solar cooling tube using thermal/vacuum emptying method was experimentally studied in this paper. The coefficient of performance (COP) of the solar cooling tube was mostly affected by the vacuum degree of the system. In past research, the thermal vacuum method, using an electric oven and iodine-tungsten lamp to heat up the adsorbent bed and H2O vapor to expel the air from the solar cooling tube, was used to manufacture solar cooling tubes. This paper presents a novel thermal vacuum combined with vacuum pump method allowing an increased vacuum state for producing solar cooling tubes. The following conclusions are reached: the adsorbent bed temperature of solar cooling tube could reaches up to 233C, and this temperature is sufficient to meet desorption demand; the refrigerator power of a single solar cooling tube varies from 1W to 12W; the total supply refrigerating capacity is about 287kJ; and the COP of this solar cooling tube is about 0.215. Copyright © 2012 Huizhong Zhao et al.
Zhao, H., Liang, H., Sun, W., Yu, G., Cao, D., & Ji, J. (2012). Experimental study on solar cooling tube using thermal/vacuum emptying method. Advances in Materials Science and Engineering, 2012. https://doi.org/10.1155/2012/808210