Research On Heat Receiver Thermal Performance Of Solar Thermal Power Tower Plant

Human life and social progress can’t do without the energy. The fossil fuels are becoming fewer and fewer and our living environment is becoming more serious. These problems urgently require all mankind to explore clean renewable energy actively. Solar energy has many advantages, such as:rich resources, reproducible, clean and local development. Solar thermal power tower generation technology is a significant research direction in the use of the solar energy with a lot of benefits, for example low cost relative, large capacity and simple construction. In conclusion the technology has vast development potential and bright commercial prospects.In this paper, I have designed a small solar thermal tower receiver system based on the flow and heat transfer process. The temperature field of the cavity receiver and the working medium were measured. What’s more, I have built the computing methods of thermal losses and heat efficiency. The experimental results offered the influence factors on the thermal performance, included radiation intensity, inlet flow, ambient wind speed and so on.In this paper, a corresponding numerical simulation model in Fluent software was established. I made the uneven heat flux density distribution as the boundary conditions in the fluent model by using UDF. The simulated results offered the influence factors on the thermal performance, included radiation intensity, inlet flow and inlet temperature.Finally, I made a comparison between the experiment and simulation results in order to prove the reliability. According to both results:the heat flux density coming from the solar simulator follows Gaussian distribution on the whole; the lessen of radiation intensity, the rise of the inlet flow and the lessen of inlet temperature can make the heat efficiency’s increase; a glass cover can effectively reduce ambient wind speed’s affects on thermal performance of receiver, but also need to consider the influence of light transmission, economy, dependability and can be installed easily.