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Mathematical Modelling for Thermal and Mechanical Design of Shell and Tube Type Gas Cooler Used in Transcritical CO2 Refrigeration System
International Journal of Systems Science and Applied Mathematics
Volume 2, Issue 3, May 2017, Pages: 64-69
Received: May 15, 2017; Accepted: May 25, 2017; Published: Jul. 12, 2017
Authors
Sandip Patil, Department of Mechanical Engineering, Govt. College of Engineering, Karad, India
Madhu Kasturi, Department of Mechanical Engineering, Govt. College of Engineering, Karad, India
Anil Acharya, Department of Mechanical Engineering, Govt. College of Engineering, Karad, India
Ashok Pise, Department of Mechanical Engineering, Govt. College of Engineering, Karad, India
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Abstract
This paper is about Mathematical Modelling for Thermal and Mechanical Design of Shell and Tube type Gas Cooler used in Transcritical CO2 Refrigeration system. Transcritical refrigeration system refers to system whose condenser temperature is above critical temperature of refrigerant. To achieve it, the condenser in conventional refrigeration system is replaced by Gas Cooler where Refrigerant vapour is cooled sensibly without condensation. The gas cooler is used for cooling of refrigerant by using water as coolant. The temperature of refrigerant vapour coming out of compressor in transcritical system is more as compared to conventional refrigerant system. So gas cooler can be effectively used for heating of water. This paper describes a mathematical model that can be used in predicting the heat transfer performance of a shell and tube type Gas Cooler used in transcritical CO2 refrigeration system. The model uses Kern Method of Heat exchanger design. Given the fluid inlet and outlet temperatures flow rates of fluid & fluid properties the model determines (a) the necessary heat transfer surface area, (b) Outside and inside heat transfer coefficient, (c) overall heat transfer coefficient, (d) Pressure drop on shell and tube side, (e) It also determines mechanical design parameters such as shell O. D, Shell thickness, Tube sheet thickness, Flange thickness.
Keywords
Gas Cooler, Transcritical, CO2, Refrigeration, Tube Sheet Thickness
Sandip Patil, Madhu Kasturi, Anil Acharya, Ashok Pise, Mathematical Modelling for Thermal and Mechanical Design of Shell and Tube Type Gas Cooler Used in Transcritical CO2 Refrigeration System, International Journal of Systems Science and Applied Mathematics. Vol. 2, No. 3, 2017, pp. 64-69. doi: 10.11648/j.ijssam.20170203.11
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