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الثلاثاء، 5 أغسطس، 2014

Characteristics and Performance of Absorption Chiller

Author        : Farag Mansour Farag Farkash
Degree        : M.Sc. Mechanical

Title: Characteristics and Performance of Absorption Chiller

 Abstract
 Air conditioning is one of the major consumers of electrical energy in many parts of the world. The demand can be expected to increase because of the changing working times, increased comfort expectations and global warming. With more air conditioning units, the electricity demand has been rising thereby increasing the use of fossil fuels and nuclear energy. A drastic change, therefore, should be implemented in the energy structure of the developed countries. Environmentally friendly and energy efficient technologies should be introduced in which the environmental impact of the conventional air conditioning system is minimized.
Solar radiation as a sustainable energy resource is one of the most available forms of energy on the earth surface which could reduce the fossil fuel consumption and C02 emission to the atmosphere. Solar cooling is a possible technological alternative to conventional air conditioning systems that has recently attracted a growing interest. A solar assisted absorption cooling system as a sustainable solution for cooling systems could provide cooling of a building. Since the solar energy is available for only a fraction of the day and its availability depends on several factors such as latitude, sky clearness and times of year, auxiliary heater have been used to cover insufficient sun radiation. In this thesis, the mathematical model for the single effect absorption system based on the mass and energy balances and heat transfer equations were developed. These equations used in EES program with weather data for Alexandria city to study characteristics and performance of absorption chiller and compare the results all around year.
The study concluded that solar absorption system is effective and economic technology in cooling of buildings, especially in sunny countries, where is enough amount of sun radiation is available for supplying sufficient capacity to absorption chiller that cover cooling demand in those building.

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