Abstract Solar thermal power plants for electricity production include, at least, two main systems: the solar field and the power block. The power block is a regenerative SRC with reheat. Superheated steam at the
If unused, the water returns for reheating, either automatically or through a pump. These are the components of a solar hot water heating system: Solar collector: This water heater component converts sunlight to heat energy,
With solar reheating organic Rankine cycle plant shows increase in efficiency while the combined cycle plant shows decrease in efficiency because of decrease in mean temperature of the heat
Solar concentrating systems can play a critical role in the future for designing sus - tainable cities. The goal of this investigation is the energy analysis of a solar-driven power plant based on the
Finally, solar preheating systems can be applied in the thermal power plants with bottoming cycles such as Brayton-Rankine cycles and the performance be compared with the cycles with solar preheating.
The performance of the power plants coupled with solar preheating systems is affected by several factors . As an example, Popov investigated the performance of a Rankine cycle by using solar Fresnel collectors to preheat the boiler feedwater.
According to the study of Yan et al. , by adjusting the ratio of feedwater to the collector, the operation of the system can be optimized. Another factor influencing the efficiency of solar preheating in power plant is the operating principles and conditions of the cycle.
Using solar energy for preheating the feedwater and reheated steam caused higher enhancement compared with just reheating. Adjusting the ratio of feedwater in collector leads to optimized performance of the system. Using preheating is more suitable in supercritical and subcritical cycles compared with ultra-supercritical.
Fuel consumption reduction due to contribution of solar energy in power generation. Using solar preheating system in both conventional and intercooled gas turbine cycles led to significant reduction in carbon dioxide emission. Optimal size of solar field was obtained to reach the best performance.
The enhancement in the performance of the cycles utilizing gas preheating is under the influence of several factors including the size of solar field, configuration of the system, applied components, etc. .
