Abstract
Heat loss is an important factor in the performance of the solar receiver for concentrated solar systems (CSP). This study presents a proposed model for a new design for the receiver using an evacuated tube that has been performed to reduce convection loss and radiative heat losses with a zigzag distribution to minimize spillage losses. In this study, simulation results showed that the energy input increases with increased solar irradiation; the increase ranges from 3429 to 5584 W and 1879 to 3875 W at 9 AM and 13 PM for preheater and superheater respectively. The thermal efficiency of the receiver was around 72%.
Highlights
Advanced solar energy technology enables high-grade energy to yield the inefficient amount of power while keeping the plant size compact and offering minimal capital investment recovery period [1, 2]
In a solar tower power plant, myriad of heliostats is used to reflect the solar radiation received from the sun towards a tower-mounted central receiver
Its primary function is to absorb the reflected solar energy, which has been concentrated by heliostats, and to transmit this energy into a Heat Transfer Fluid (HTF)
Summary
Advanced solar energy technology enables high-grade energy to yield the inefficient amount of power while keeping the plant size compact and offering minimal capital investment recovery period [1, 2]. In a solar tower power plant, myriad of heliostats is used to reflect the solar radiation received from the sun towards a tower-mounted central receiver. This central receiver is the most important and crucial component of the solar power plant and contributes the maximum to its overall performance. Its primary function is to absorb the reflected solar energy, which has been concentrated by heliostats, and to transmit this energy into a Heat Transfer Fluid (HTF). The current study proposes a new central receiver design. This design can significantly help in reducing the heat loss from central tower receivers. Recapitulating, this study was able to identify a correlation model which evaluates the performance and efficiency of the central receiver
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