Design of a stirling engine to generate green energy in rural areas of Bangladesh

Abstract

In Bangladesh the peak demand of power is greater than the amount of power generated. 30% of the villages of Bangladesh are deprived of electrical power. Again a great deal of energy is wasted in the form of heat in the mud stoves used for cooking purpose in rural areas. The temperature difference between the stoves and the environment can be used to produce green power with the help of Stirling engine. Stirling engine is a heat engine that is operated at various temperature levels by cyclic operation of expansion and compression of working gas. It converts heat energy to mechanical energy. It works on Stirling cycle. A DC generator is used to convert the mechanical energy to electrical energy. In this paper a displacer type Stirling engine has been designed and using the design parameters a prototype has been simulated that can be implemented on the mud stoves. Using helium as working fluid this prototype can generate 52 W of mechanical power at 100 rpm engine frequency, 4.216×10−4 m3 displacer swept volume, 90° phase angle and about 150 °K of temperature difference. This research concentrates on the design and implementation of Stirling engine in rural areas to generate green energy and lessen energy crisis of Bangladesh.