الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
The steam surface condenser is the most crucial component in the electrical power plant as its functions are interrelated with the plant efficiency and thus increase the resulting loads from the plant. The steam surface condenser works on the consumption of the exhaust steam from turbines and converts it into ultra pure condensate, which in turn serves as the boiler feed water. In order to increase the efficiency of this process, we have to succeed in maintaining the vacuum pressure resulted in the condenser as minimum as possible with the help of the removed-noncondensables equipments.
The condenser is usually sized to perform a heat transfer function under a given set of conditions. These conditions are called ”The design conditions” or the conditions at the design point. In operating the condenser may not always be at the design point, this is mainly due to the variation of condenser heat load or a change of circulating water inlet temperature. Because of these, the condenser evaluation must be based on the design as well as off-design performances.
There are two principal ways of estimating the condenser design and performance parameters, the Heat Exchange Institute (HEI) method [1] and the American Society of Mechanical Engineers (ASME) method [2]. Both methods compare the current value of the effective heat transfer coefficient, which is computed from inlet steam and water temperatures and cooling water flow rate, with a reference value calculated according to one of these two procedures.
In this research, the HEI method was chosen to calculate the design parameters and make the performance analysis for the steam surface condenser using an established software program APPENDIX [A], where calculations of the overall heat transfer coefficient is a function of tube water velocity, inlet circulating water temperature, tube material, tube gauge, and cleanliness factor. Tables and curves in the HEI standards for steam surface condensers allow the appropriate values to be selected, either according to the design data set or the operating data set. The developed program used here to study the effect of changing all parameters in the condenser thermal design procedures to find the best design points, also can be used to study the variations in the condenser operating parameters to estimate if there is a problem in condenser performance then study the effect of those changes to other parameters.