A thermal analysis of parabolic trough CSP and biomass hybrid power system

Abstract

Providing clean, efficient and reliable energy to the masses is currently the main focus of the energy market and more so for the rural areas. Sudden increase of oil prices, arranging cheap energy supply for the rural households is a challenge which should be addressed at the government and industrial levels. The paper focuses on how energy can be extracted from hybrid concentrating solar power with biomass and used for rural electrification in Lodwar Kenya. In Kenya about 50% of the people who live in the rural areas do not have electricity and mostly rely on traditional biomass. Index Terms-concentrated solar thermal power, direct normal radiation, and hybrid power system. I. NOMENCLATURE Aa: Aperture area of the collector (m2), 50000m 2 Ag: Outside surface area of glass envelope (m2 Ar : Surface area of receiver (m2 Cg : Coefficient of net power generation at generator cw : Specific heat of heat transfer fluid (J/kg K) Di : Inner diameter of the receiver tube (m) Do: Outer diameters of the receiver tube (m) Eg: Gross electrical generation capacity at the generator (W) En: Net power generation (W) Qu: Rate of solar thermal energy output (W) Ta(t):Ambient temperature (°K) Tg:Outside glass envelope temperature (°K) Ti(t):Temperature of the fluid entering collector (°K) To(t) Temperature of the fluid leaving collector (°K K) Tr(t) :Receiver temperature (average temperature on the Absorber surface) (°K) Hf: Heat-transfer coefficient from receiver tube wall to fluid hg: convective heat-transfer coefficient at outside surface of glass envelope (W/m 2 K) E PCU : efficiency of PCU, 0.5

A review on bi-source, off-grid hybrid power generation systems based on alternative energy sources

“…Using this biogas, a turbine can be run for the production of electricity in the power production unit. 142 Solar generator is provided with the parabolic trough to increase the concentration of solar radiation. The parabolic trough has an absorber tube filled with a heat transfer fluid (HTF), which produces super-heated steam to drive a turbine for electricity production in the power production unit.…”