Abstract
An analytical analysis has been presented to evaluate the performance of a solar-assisted va-pour absorption cooling system with a flat-plate absorber plate. The lithium–bromide water absorption cycle is used to obsstain the cooling effect. The performance parameters, namely absorber plate efficiency, collector efficiency factor, heat removal factor, etc. have been deter-mined with the variation of collector fluid inlet temperature. The cycle coefficient of perfor-mance (COP), system COP, refrigerating efficiency of the cycle, and refrigerating efficiency of the system are determined analytically. The maximum COP and cooling efficiency for both the cycle and system has been found at an optimal collector fluid inlet temperature. The optimum design condition for the variation of different design parameters, such as ambient temperature and thermal conductivity, has also been studied. Finally, the plate material is found to be a minimum at a particular collector fluid inlet temperature which is an optimum design condi-tion to run the solar-assisted vapour absorption system.
Highlights
The utilisation of solar energy for cooling purposes is an effective solution for energy savings in residential and commercial buildings
Based on the above solar-assisted absorption system analysis, results have been taken for various system performance parameters as a function of the inlet temperature of the collector fluid
The total solar radiation that falls on the collector plate is used to heat up the surface area of the plate
Summary
The utilisation of solar energy for cooling purposes is an effective solution for energy savings in residential and commercial buildings. Due to the increase in energy demands, it is necessary to depend on renewable sources of energy for daily needs. Solar energy is an abundant source of renewable energy, which can be harnessed to provide energy to various applications. Solar cooling systems are widely developed in areas, which have little access to electricity and have abundant sunlight throughout the year. The simplest way to use solar energy for cooling purposes is the vapour absorption refrigerant system, due to their easy operation and production. A number of absorption systems have been researched and developed recently, which can be powered by solar heat or waste heat generated from industrial power plants
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