Evaluation of Performance of Thermal and Electrical Hybrid Adsorption Chiller Cycles with Mechanical Booster Pumps
- 1 Department of Chemical Engineering, Nagoya University, Nagoya, Japan
- 2 Department of Chemical Engineering, Nagoya University, Nagoya, Japan
- 3 Department of Chemical Engineering, Nagoya University, Nagoya, Japan
- 4 Department of Chemical Engineering, Nagoya University, Nagoya, Japan
- 5 Integrated Technology Center, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, China
Abstract
Large amounts of waste heat below 100 o C from the industrial sector are re-leased into the atmosphere. It has been suggested that energy system efficiency can be increased with adsorption chillers. However, the cooling power and coefficient of performance (COP) of conventional adsorption chillers significantly decrease with the desorption temperature. In this paper, we proposed a mechanical booster pump (MBP)-assisted adsorption chiller cycle, and evaluated its performances. In the cycle, a MBP was incorporated into a zeolite-water-type adsorption chiller for facilitating water vapor transportation between an adsorber and an evaporator/condenser. We have experimentally studied the effect of the input electrical power of MBP on the performances of adsorption chiller cycle. It has been demonstrated that the heat input achieved by using MBP at the desorption temperature of 50 o C was 1.6 times higher than that of without MBP at the desorption temperature of 60 o C. And the increase of pump power was found to be effective in increasing the heat input. Therefore, it was confirmed that the operation range of desorption temperature, which can be generated by using the waste heat, was extended and the cooling power was increased directly by using MBP.
- Wu, W., Wang, B., Shi, W. and Li, X. (2014) Absorption Heating Technologies: A Review and Perspective. Applied Energy, 130, 51-71. https://doi.org/10.1016/j.apenergy.2014.05.027
- Demir, H., Mobedi, M. and ülku, S. (2008) A Review on Adsorption Heat Pump: Problems and Solutions. Renewable and Sustainable Energy Review, 12, 2381-2403. https://doi.org/10.1016/j.rser.2007.06.005
- Lahmidi, H., Mauran, S. and Goetz, V. (2006) Definition, Test and Simulation of Thermochemical Storage Process Adapted to Solar Thermal Systems. Sol. Energy, 80, 883-893. https://doi.org/10.1016/j.solener.2005.01.014
- Palomba, V., Vasta, S., Giacoppo, G., Calabrese, L., Gulli, G., La Rosa, D. and Freni, A. (2015) Design of an Innovative Graphite Exchanger for Adsorption Heat Pumps and Chillers. Energy Procedia, 81, 1030-1040. https://doi.org/10.1016/j.egypro.2015.12.112
- Hirota, Y., Kobayashi, N., Watanabe, F., Hasatani, M., Uda, S. and Inaoka, H. (2008) Development of the Adsorber in the Ammonia and AC Combination Adsorption Heat Pump. Journal of Japan Society of Energy and Resources, 29, 35-41. http://www.jser.gr.jp/journal/journal_pdf/2008/journal200805_6.pdf
- Kakiuchi, H., Shimooka, S., Iwade, M., Oshima, K., Yamazaki, M., Terada, S., Watanabe, H. and Takewaki, T. (2005) Novel Water Vapor Adsorbent FAM-Z01 and Its Applicability to an Adsorption Heat Pump. Kagaku Kogaku Ronbunshu (Japan), 31, 361-364. https://doi.org/10.1252/kakoronbunshu.31.361