Mathematical Modelling for Thermal and Mechanical Design of Shell and Tube Type Gas Cooler Used in Transcritical CO2 Refrigeration System
Sandip Patil,
Madhu Kasturi,
Anil Acharya,
Ashok Pise
Issue:
Volume 2, Issue 3, May 2017
Pages:
64-69
Received:
15 May 2017
Accepted:
25 May 2017
Published:
12 July 2017
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.
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...
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Design and Implementation Options for Digital Library Systems
Issue:
Volume 2, Issue 3, May 2017
Pages:
70-74
Received:
15 May 2017
Accepted:
1 June 2017
Published:
17 July 2017
Abstract: An institutional repository and digital library is a new concept for collecting, managing, disseminating, and preserving research works created in digital form by researchers in individual organizations and institutions. These tools can assist in narrowing the digital divide or the digital gap (through knowledge sharing) between the third world countries and developed countries which continues to widen between the information rich and the information poor. This in its turn can have positive effect as an instrument for sustainable economic advancement. The purpose of this paper is to shed light on design and implementation options for digital library systems. It aims at explaining the phases and stages required for designing a digital library system. The stages are explained in a simple way so that digital library developers can use these steps as guidelines for designing a digital library in the most effective way.
Abstract: An institutional repository and digital library is a new concept for collecting, managing, disseminating, and preserving research works created in digital form by researchers in individual organizations and institutions. These tools can assist in narrowing the digital divide or the digital gap (through knowledge sharing) between the third world cou...
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