Small-scale CHP for Rural Electrification in Uganda – The State-ofthe- art and Prospective Development
Musinguzi, Wilson B.
Okure, Mackay A.E.
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Worldover, small-scale CHP systems are undergoing rapid development, and are emerging on the market with promising prospects for the near future. The choice of a suitable CHP system is driven by the need and local conditions at the target end user, keeping in mind that the system integration should have a good balance of being most efficient, reliable, cost effective, socially beneficial, least polluting and sustainable in the long run. In developing countries, small-scale biomass-fuelled CHP systems have a particular strong relevance in improving the quality of life, especially among rural communities. This paper presents the recent advances in small scale CHP process integration for decentralized power generation. It also presents an exergy analysis of a prospective CHP system that has the potential of providing relatively higher efficiency and minimal operational difficulties and thus attractive for rural electrification in Uganda. The target generation capacity is 100 kWe sufficient to meet electricity needs of a rural community of 250 households. Stepwise procedure with simulation using Aspen Plus is used in the analysis of this CHP cycle. The results show that the proposed process integration has the promise of efficiently utilizing the exergy generated.