As a result of heavily urbanized societies and their consequent need through the last decades, CFCs have been widely used in compressor equipped air conditioning systems. Although, these kinds of equipments are used a lot, various questions have been raised against the use of them. This is due to compressor's high energy consumption, low efficiencies in power plants, and environmental crises. Therefore, world-wide scientific and research motivation has been sharply increasing to limit the use of CFCs and make energy consumption more efficient.The goal of this project is based on design and construction of an experimental prototype of an adsorption chiller and analysis of different parameter's effect on its performance. In comparison to previous works, this chiller is very small in dimension and a small quantity of silica gel mass is used in it, which make the device a unique one. Furthermore, to increase the heat transfer through the heat exchanger chamber, epoxy resin is used to attach silica gel pieces to the heat exchanger surface. Thus, the chiller could be categorized as an adsorption chiller with coated heat exchanger.The unit contains an adsorption chamber, evaporator and a condenser. Also, a mercury vacuum manometer has been designed and installed on the unit to measure the pressure in different parts.After production and making sure that the unit is perfectly sealed, some tests were done to investigate the effect of different parameters on its performance. These parameters are temperature of hot water inlet to the adsorption chamber, the temperature of cold water inlet to the condenser, the temperature of chilled water inlet to the evaporator, hot and cold water flow through the heat exchanger chamber, system primary vacuum pressure and cycle duration.Duo to existing constraints, the device performance is lower than what was expected. Analysis shows that the most important causes for low performance are tiny dimension of the device, minute amount of silica gel mass usage and pressure losses in the system. Tests results show that any increase in the hot water source temperature or in the cool water source temperature, will cause a rise in the coefficient of performance (COP) and specific cooling power (SCP). On the other hand, an increase in the temperature of cold water source will reduce the COP and SCP. Also, it was proved that an increase in the mass flow rates of hot and cold water passing through the heat exchanger of adsorption chamber, slightly raises the COP and SCP. However, if the system primary vacuum pressure is increased, these two parameters would be dramatically reduced.Based on the test results, there will be an optimum cycle duration, for which the SCP is maximum. This phenomenon occurs in the cycle duration of 12 minutes. Key Words: adsorption, silica gel, chiller, chemical, heat pump