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This paper deals with the performance evaluvation of portable mist humidifier, for producing a cooling effect in a specified area. A humidifier is an electrical device that increases the humidity of an environment. So the room temperature got reduced with the help of increasing the humidity. This devise provides a cooling effect at low cost without health hazards. The experimental arrangement made with the components of axial fan, copper tubes, hydraulic pump, nozzles, respectively. The misting nozzles are placed into the holes which are made in the copper tube and the copper tube is fitted over the frame on the axial fan. The hydraulic pump is kept in the water tank to circulate the water to the copper tube. When the water flows through the tube it emits water droplets with the help of misting nozzles. Due to the high-speed axial fan, the emitted water droplets are sprayed into the atmosphere as a mist. When there is a increase in the moisture content there will be decrease in room temperature. Due to this effect the room temperature has been decreased by 12% with the help of humidifier.

This paper reviews the past efforts of solar assisted-single effect vapour absorption cooling system for buildings. Besides the review of the past theoretical and experimental investigations of solar absorption cooling systems, some new ideas were introduced to reduce heat transfer loss to generator and thus to increase COP to get effective cooling. An experimental setup of vapour absorption cooling system was designed, developed and constructed. In order to monitor and analyze the performance of the cooling system it is necessary to collect the operation parameters of the system. In this regard the technique of visual instruments and the characteristics of cooling system is combined using national instrument product LabVIEW.

Many research studies have been carried out to develop small capacity absorption cooling systems as an alternative to conventional vapour compression refrigeration (VCR) systems with respect to performance and economic aspects. The aim of this work is to design a solar assisted single effect absorption cooling system of 5.25 kW cooling capacity to cool a room having floor area of 15 m2. Based on the design, an experimental setup is constructed and operated by supplying heat to the generator using solar energy. The performance analysis of the cooling system is carried out by measuring the various operational parameters. The minimum cooling temperature of 16°C is observed in the evaporator and maximum COP of 0.9 is obtained when the hot water storage tank reaches 90°C. As per this new design, the operational cost is minimized and the COP obtained is slightly higher when compared to that of earlier similar works.

The aim of this work is to design and fabricate solar assisted single effect absorption cooling system of 5.25 kW cooling capacity to cool a room having floor area of 15m2. The design of the major components of the cooling system like generator, condenser, evaporator, absorber and solution heat exchanger are described in this paper.