Abstract
A solar chimney power plant consists of four main parts, a solar collector, a chimney, an energy storage layer, and a wind turbine. So far, several investigations on the performance of the solar chimney power plant have been conducted. Among them, different approaches have been applied to model the turbine inside the system. In particular, a real wind turbine coupled to the system was simulated using computational fluid dynamics (CFD) in three investigations. Gholamalizadeh et al. simulated a wind turbine with the same blade profile as the Manzanares SCPP’s turbine (FX W-151-A blade profile), while a CLARK Y blade profile was modelled by Guo et al. and Ming et al. In this study, simulations of the Manzanares prototype were carried out using the CFD model developed by Gholamalizadeh et al. Then, results obtained by modelling different turbine blade profiles at different turbine rotational speeds were compared. The results showed that a turbine with the CLARK Y blade profile significantly overestimates the value of the pressure drop across the Manzanares prototype turbine as compared to the FX W-151-A blade profile. In addition, modelling of both blade profiles led to very similar trends in changes in turbine efficiency and power output with respect to rotational speed.
Highlights
A solar chimney power plant (SCPP) is one of the practical solar thermal power systems that produce electricity from solar energy
SCPP’s turbine (FX W-151-A blade profile), while a CLARK Y blade profile was modelled by Guo et al
This paper focused on the influences affecting the modelling of a real wind turbine and
Summary
A solar chimney power plant (SCPP) is one of the practical solar thermal power systems that produce electricity from solar energy. The temperature of the airflow through the collector increases, which results in a continuous updraft in the chimney due to the upward buoyancy force. This airflow runs a turbine, which is located at the chimney base. The first SCPP, called the Manzanares prototype, was constructed in Manzanares, Spain, in 1982. This prototype was designed to produce a peak power output of 50 kW, and was tested under continuous operation for a period of seven years [1].
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