Performance of a compact,spiral coil heat exchanger |
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| Affiliation: | 1. Department of Chemical Engineering, Shahrood Branch, Islamic Azad University, Shahrood, Iran;2. Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran;1. Mechanical Engineering Department, TULA’S Institute, Uttarakhand Technical University, Dehradun, Uttarakhand 248197, India;2. Mechanical Engineering Department, DIT University Dehradun, Uttarakhand 248009, India;3. Mechanical Engineering Department, BTKIT Dwarahat, Uttarakhand Technical University, Uttarakhand 263653, India;1. Department of Architecture and Civil Engineering, Chonnam National University, Yongbong-ro 77, Buk-gu, Gwangju, 61186, South Korea;2. Department of Civil Engineering, Chonnam National University, Yongbong-ro 77, Buk-gu, Gwangju, 61186, South Korea;3. Radioactive Waste Disposal Research Division, KAERI, Daejeon, 34057, South Korea |
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| Abstract: | A spiral coil heat exchanger consists of a number of horizontal layers of spirally wound, finned tubes connected to vertical manifolds at the inner and outermost turns of each coil. This design has advantages in heat recovery and air-conditioning applications. Two theoretical models to predict the performance of this compact heat exchanger are presented based upon unmixed and mixed air-flow considerations. Results of experimental studies on a laboratory model of the spiral coil heat exchanger agree well with the predicted performance of the theoretical models. Charts of effectiveness vs NTU suitable for design are presented. |
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