Keywords: exergy analysis, Pinch analysis, power system, solar energy, solar power, thermal power plants, Greece, solar collectors, Rankine power cycle, heat exchangers, low entropy
A solar thermal power system in the city of Thessalonica with the use of the Pinch method for entropy minimisation
The objective of this paper is to create a small power plant, (producing 2 MW annually), which will be using solar energy as a driving fuel. The system is made up of three sub-systems: a set of Solar Collectors (SCS), a Rankine power cycle and a Heat Exchanger Network (HEN). Two cases with variations in the operation of the solar collectors and the heat exchanger network will be examined. The Pinch analysis methodology is used in their design. This will lead to minimum and hence a minimum entropy production. The exergy gains from the low entropy production techniques will be calculated.