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Thermo-hydraulic behavior of ice slurry in an offset strip-fin plate heat exchanger |
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| Affiliation: | 1. Department of Chemical Engineering, Shahrood Branch, Islamic Azad University, Shahrood, Iran;2. Department of Physics, Shahrood Branch, Islamic Azad University, Shahrood, Iran;1. Nuclear Engineering Program, University of Idaho, Moscow, ID 83844, USA;2. Department of Chemical and Materials Engineering, University of Idaho, Moscow, ID 83844, USA;3. Nuclear Engineering Program, Department of Mechanical and Aerospace Engineering, The Ohio State University, Columbus, OH 43210, USA;4. Idaho National Laboratory, Idaho Falls, ID 83415, USA;1. Department of Mechnical Engineering, KAIST, Daejeon 34141, Republic of Korea;2. School of Mechanical Engineering, Hanyang University, Republic of Korea;3. Smart Energy & Nano Photonics Group, Korea Institute of Industrial Technology (KITECH), Gwangju 61012, Republic of Korea;4. Department of Mechatronics Engineering, KOREA TECH, Cheonan 31253, Republic of Korea;1. Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China;2. State Key Lab of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China;3. Inner Mongolia First Machinery Group Co. Ltd. Baotou, Inner Mongolia 014032, China |
| Abstract: | Ice slurry is a promising alternative to conventional single-phase coolants in indirect refrigeration systems. In this paper, an experimental analysis of an offset strip-fin heat exchanger operating with ice slurry as working fluid is presented. The pressure drop and thermal performance have been determined. In order to obtain the partial thermal resistance in the ice slurry side an empirical correlation for the secondary fluid side was determined by applying the Wilson plot method in a set of tests performed previously. An empirical correlation in terms of the Colburn j-factor to describe the thermal behavior of the heat exchanger with ice slurry was obtained. On the other hand, the direct pressure drop measurements operating with different flow rates and ice fractions are shown and compared with values obtained with single-phase fluids. Pressure drop instabilities have been observed for flow rates lower than the nominal value provided by the manufacturer. |
| Keywords: | Ice slurry Offset strip fins Plate heat exchanger Indirect cooling systems Coulis de glace Ailettes non alignées Echangeur de chaleur à plaques Systèmes de refroidissement indirect |
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