Evacuated heat pipe solar collector
| Autor: | F. Mahdjuri |
|---|---|
| Rok vydání: | 1979 |
| Předmět: | |
| Zdroj: | Energy Conversion. 19:85-90 |
| ISSN: | 0013-7480 |
| DOI: | 10.1016/0013-7480(79)90004-4 |
| Popis: | A tubular evacuated solar collector with rectangular performance characteristics is introduced. The heat transfer from the absorber plate with selective coating to the water tubing occurs via a heat pipe system. In order to avoid any delay in the operation of the heat pipe due to superheating of the vapour, we have introduced a trap mechanism for the condensed liquid. To avoid the disadvantage of the high no-load condition of the vacuum collectors we have used the physical features of the critical point of the heat pipe working fluid. Above the critical temperature, T c of the working fluid the condensation effect will disappear. This means that above T c the heat transfer property of a heat pipe will vanish. This will cause only a slight increase of the condenser temperature above T c of the liquid used. For our heat pipe system we have chosen working liquids with critical temperature between 95–115°C. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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