Investigation of Cycle Time for Adsorption Cooling System
Abstract
One of the crucial concerns to society nowadays is regarded in environmental issues. One of the solutions to achieve sustainable ecology is using clean energy resources such as solar energy. Solar energy can drive the operation of the adsorption cooling system since it can operate with a low thermal grade heat source. However, there are drawbacks to the adsorption cooling system, such as a low Coefficient of Performance (COP) and low Specific Cooling Power (SCP), which lead to a large size and heavy machine. This low performance is due to a massive amount of adsorbent that is needed to deliver significant cooling power. The improvement of the performance had been made through the experiments. It was succeeded in identifying the optimum variable parameters that affect the performance, such as adsorption/desorption time variation in one refrigeration cycle, pre-cooling/pre-heating time variation, which occurs in between adsorption/desorption process. The experiment was started by identifying the optimum variable of each parameter one by one and accumulate all optimum variable parameters at one final optimum result. The experiment outcome was able to determine better COP and higher cooling capacity with the same amount of adsorbent.
References
B.B Saha et al., (2003), Performance evaluation of a low temperature waste heat driven multibed adsorption chiller, Int. Journal Multiphase Flow, 29(8), 1249-1263.
D. C. Wang, Z. Z. Xia, J. Y. Wu, R. Z. Wang, H. Zhai, and W. D. Dou, (2005), Study of a novel silica gel-water adsorption chiller. Part I. Design and performance prediction, Int. J. Refrig., 28(7), 1073–1083.
F. Jerai, T. Miyazaki, B. B. Saha, and S. Koyama, 92015), Importance of pre-cooling and pre-heating on performances of one bed adsorption cooling systems with activated carbon-ethanol pair, Trans. Japan Soc. Refrig. Air Cond. Eng., 32(3), 381–392.
G. Najeh, G. Slimane, M. Souad, B. Riad, and E. G. Mohammed, (2016), Performance of silica gel-water solar adsorption cooling system, Case Stud. Therm. Eng., 8, no. June, 337–345.
J. Y. Wu, (1997), Study of the Fundamentals, Appl. Therm. Eng., 17(4),327–338.
M. Astina, R. Sokha, and P. S. Darmanto, (2017), Study on Adsorption Refrigeration System Using Activated Carbon-Ethanol as Working Pair, 15(2) ,143–150.
K. Sen Chang, M. T. Chen, and T. W. Chung, (2005), Effects of the thickness and particle size of silica gel on the heat and mass transfer performance of a silica gel-coated bed for air-conditioning adsorption systems, Appl. Therm. Eng., 25(14–15), 2330–2340.
M. Hamdy, A. A. Askalany, K. Harby, and N. Kora, (2015), An overview on adsorption cooling systems powered by waste heat from internal combustion engine, Renew. Sustain. Energy Rev., 51, 1223–1234.
A. Sharafianardakani, (2015), Waste heat-driven adsorption cooling systems for vehicle air conditioning applications, 213.
A. Sharafian, Nemati Mehr S. M., Thimmaiah P. C., Huttema W., and Bahrami M., (2016), Effects of adsorbent mass and number of adsorber beds on the performance of a waste heat-driven adsorption cooling system for vehicle air conditioning applications,” Applied Thermal Engineering, 112, 10-111.
X. Q. Zhai and R. Z. Wang, (2010), Experimental investigation and performance analysis on a solar adsorption cooling system with/without heat storage, Appl. Energy, 87(3), 824–835.
Y. L. Liu, R. Z. Wang, and Z. Z. Xia, (2005), Experimental performance of a silica gel-water adsorption chiller, Appl. Therm. Eng., 25(2–3) ,359–375.
W. Kai and V. Edward A., (2011), New Opportunities for Solar: Adsorption refrigeration, Am. Soc. Heating, Refrig. Air-Conditioning Eng.
Z. S. Lu, R. Z. Wang, Z. Z. Xia, Q. B. Wu, Y. M. Sun, and Z. Y. Chen, (2011), An analysis of the performance of a novel solar silica gel-water adsorption air conditioning, Appl. Therm. Eng., 31,(17–18), 3636–3642,
