| Autor: |
GOLDENBERG, LIOR C., ROSH, MARK, JAROSCH, HANS |
| Zdroj: |
International Journal of Solar Energy; May1989, Vol. 7 Issue 2, p111-125, 15p |
| Abstrakt: |
Simulations were performed to evaluate the performance of a subsystem of the Thermochemical Pipeline Project (WITP) of the Weizmann Institute of Science. This subsystem includes a compressor, a 41 m long pipe, a cavity-type central receiver, and a mass-flow control element. The results show that the solar energy available for absorption into the tubes amounts to 1884 MWh/year, under the assumption that the working fluid (air) enters the cavity at 300 K and leaves at 1200 K. For bright days conditions, the average efficiency of the system increases from 56% (at 7 A.M. ) to 69% (at midday), with a yearly average efficiency of 63%. The mass flow is represented by the correlation: where FM is the total mass flow rate of the working fluid (kg/s(, and Ein is the total solar energy entering into the cavity (MW). It is suggested to increase the performance of the receiver by: 1) exploiting a part of the solar power flux existing as spillage, and 2) capturing the energy of the hot air otherwise dissipated by convection. It is suggested to increase the performance of the receiver by: 1) exploiting a part of the solar power flux existing as spillage, and 2) capturing the energy of the hot air otherwise dissipated by convection. [ABSTRACT FROM PUBLISHER] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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