A heat exchanger model for air-to-refrigerant fin-and-tube heat exchanger with arbitrary fin sheet |
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| Authors: | Varun Singh Vikrant Aute Reinhard Radermacher |
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| Affiliation: | 1. Department of Building Environment and Facility Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, No.100 Pingleyuan Road, Chaoyang District, Beijing 100124, China;2. Key Laboratory of Green Built Environment and Energy Efficient Technology, Beijing University of Technology, Beijing 100124, China;3. School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, China;4. Department of Building Services Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China;1. Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China;2. Division of Research and Advanced Technology, SAIC Motor Corporation, Shanghai 201805, China |
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| Abstract: | A new model for simulating air-to-refrigerant fin-and-tube heat exchangers, with arbitrary fin sheet which encompasses variable tube diameters, variable tube locations, variable tube pitches, internal as well as external jagged edges, variable number of tubes per bank and variable location of fin cuts, is introduced. This model is based on a segment-by-segment approach and is developed to be a general purpose and flexible simulation tool. To account for fin conduction and air propagation through the heat exchanger, it is spatially modeled on a Cartesian grid. A new methodology for air side propagation, required for arbitrary fin sheets, is introduced. The model prediction is validated against experimental data for a condenser using R410A as the working fluid. The predicted results agree within ±5% of overall heat load, and ±25% for total refrigerant pressure drop. |
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