Technological investigations and efficiency analysis of a steam heat exchange condenser: Conceptual design of a hybrid steam condenser

 

 

R K Kapooria^I; S Kumar^II; K S Kasana^II

^IDepartment of Mechanical Engineering, National Institute of Technology, Kurukshetra, Haryana, and BRCM C. E. T., Affiliated M. D. University Rohtak, Haryana, India
^IIDepartment of Mechanical Engineering, National Institute of Technology, Kurukshetra, Haryana, India

 

 

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ABSTRACT

Most of the electricity being produced throughout the world today is from steam power plants. At the same time, many other competent means of generating electricity have been developed viz. electricity from natural gas, MHD generators, biogas, solar cells, etc. But steam power plants will continue to be competent because of the use of water as the main working fluid which is abundantly available and is also reusable. The condenser remains among one of the key components of a steam power plant. The efficiency of a thermal power plant depends upon the efficiency of the condenser. In this paper, a theoretical investigation about thermal analysis and design considerations of a steam condenser has been undertaken. A hybrid steam condenser using a higher surface area to diameter ratio of cooling a water tube has been analyzed. The use of a hybrid steam condenser enables higher efficiency of the steam power plant by lowering condenser steam pressure and increasing the vacuum inside the condenser The latent/sensible heat of steam is used to preheat the feed water supply to the boiler. A conceptual technological design aspect of a super vacuum hybrid surface steam condenser has been theoretically analyzed.

Keywords: heat transfer rate, heat exchanger, steam, vacuum, jet-pump-nozzle, hybrid, jet and surface condenser, LMTD

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Received 11 December 2007
Revised 19 September 2008