Thermodynamics of radiative heat rejection from closed brayton solar dynamic power
| Autor: | Yoshiharu Tsujikawa |
|---|---|
| Rok vydání: | 1991 |
| Předmět: | |
| Zdroj: | TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B. 57:292-296 |
| ISSN: | 1884-8346 0387-5016 |
| DOI: | 10.1299/kikaib.57.292 |
| Popis: | Among the many solar-powered energy conversion systems, a recuperated closed Brayton cycle (CBC) is the most promising one. Several investigated aspects can be mentioned in the present study: a first assessment of a reference 25kWe system, the simulation studies related to various operating conditions and the heat rejection studies related to the transfer of the Brayton cycle waste heat to the radiating area. In addition, particular attention is being paid to the significance of the reduction of system mass required for radiation of waste heat from a closed Brayton cycle to space. Conceptually, the radiator area can be reduced by rejecting the heat from a radiator at higher temperature level than that of the waste heat of CBC, Operating a kind of heat pump by using a fraction of generated power. The optimum radiator area is obtained. As a consequence, for high temperature ratios of the radiator-to waste on the order greater than 5, the total radiator area is reduced remarkably and the required mass addition by the inclusion of the heat pump is estimated. |
| Databáze: | OpenAIRE |
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