11-11-2014, 09:37 AM
Abstracts: This report includes design and analysis of a shell and tube type heater .A feed-water heater is used in a conventional power plant to preheat boiler feed water. The source of heat is steam bled from the turbines, and the objective is to improve the thermodynamic efficiency of the cycle. The most common configuration of feed-water heater is a shell and tube heat exchanger with the feed-water flowing inside the tubes and steam condensing outside which is considered in the report. Thermal design of a feed-water heater requires an economic optimization of many factors, including material and operating costs. Two publications which describe feed-water heaters, and their design, in some detail are those of BEAMA (1968) and HEI (1984). These documents provide performance charts which can be used to estimate the surface area requirement. However, a computer program is required to achieve an optimized design.