DESIGN OF H2O-LIBR SOLAR-DRIVEN ABSORPTION REFRIGERATING SYSTEM FOR NIGERIAN APPLICATION: A CASE STUDY

Summary

ABSTRACT
This paper presents the design of Water-Lithium Bromide (H2O - LiBr) absorption refrigeration
system powered by solar energy for application in the rural communities of South-Eastern part
of Nigeria. Design consideration is given to the geographical and climatic conditions of Nigeria,
since the country receives abundant solar radiated energy. With its teeming population of rural
and sub-urban dwellers living with inadequate supply of energy from power companies, it
becomes expedient to design a system that depends on energy from the sun for its operation. This
system was designed with a generator/desorber temperature of 950C, evaporator temperature of
350C, and absorber temperature of 450C. Through the application of thermodynamic models, the
analysis of the designed system parameters yielded the pressure limits of 0.87kPa at the
evaporator of the system, and 5.29kPa at the condenser point of the system. The analysis of the
designed system gives a very reasonable coefficient of performance (COP) of 0.807 and 1.259 at
maximum. The available results show that the designed system with its thermodynamic
parameters is very efficient and effective. The people of Nigeria and some sub-Saharan African
nations can find the contrivance very invaluable.

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