Design of solar powered adsorption heat pump with ice storage |
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| Affiliation: | 1. Department of Mechanical Engineering, University of Birmingham, B15 2TT, United Kingdom;2. Department of Mechanical Engineering, University of Karbala, Karbala, Iraq;1. International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan;2. Kyushu University Program for Leading Graduate School, Green Asia Education Center, Kasuga-shi, Fukuoka 816-8580, Japan;3. Division of Mechanical and Automation Engineering, Kyungnam University, 449 Wolyoung-dong, Masan, Kyungnam 631-701, South Korea;4. Mechanical Engineering Department, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan;5. Faculty of Engineering Sciences, Kyushu University, Kasuga-koen 6-1, Kasuga-shi, Fukuoka, Japan;6. Faculty of Physics, Jagannath University, Dhaka, Bangladesh;7. Bangabandhu Sheikh Mujibur Rahman Science & Technology University, Gopalganj 8100, Bangladesh;1. Department of Industrial Engineering, University of Naples Federico II, P.le Tecchio 80, 80125, Naples, Italy;2. Department of Engineering, University of Naples Parthenope, Centro Direzionale. IS.C4, Naples, Italy;1. Center for Environmental Energy Engineering, Department of Mechanical Engineering, University of Maryland, 4164 Glenn L. Martin Hall Bldg., College Park, MD 20742, USA;2. Department of Naval Architecture and Ocean Engineering, Pusan National University, 30 Changjeon-dong, Kumjeng-ku, Busan 609-735, Republic of Korea;1. School of Mechanical and Energy Engineering, Tongji University, Shanghai 201804, China;2. Shanghai Zhixin Electric CO., LTD, Shanghai 200080, China |
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| Abstract: | The design and performance of a solar (and/or natural gas) powered adsorption (desiccant-vapor) heat pump for residential cooling (and heating) is described. The entire system is modeled and analyzed: adsorption heat pump itself, ice thermal storage reservoir, and solar collectors. The adsorption heat pump embodies patent pending improvements to the state-of-the-art which elevate coefficient of performance for cooling from a maximum of 1.2 reported in the literature to a conservatively predicted minimum of 1.5. The adsorption device utilizes economical, robust configurations (shell-and-tube) and components (helical annular finned tubes, multi-lumen tubes) commonly employed in heat exchangers in a manner heretofore untried, as well as other enhancements (metal wool to diffuse heat throughout the adsorbent). The vessel is all aluminum and the adsorbent-refrigerant pair is carbon-ammonia. The ice reservoir provides 24 h cooling. Two types of solar collector are determined to be satisfactory at the selected operating temperature of 170 °C: (1) compound parabolic concentrator with high concentration ratio (10+) and automatic tilt adjustment, and (2) evacuated (0.001 atm) flat panel, similar to atmospheric pressure versions employed for domestic water heating. |
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