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| Celuppi,Rafael; Scapinello,Jaqueline; Andrade,Felipe G. D.; Revello,Jaime H. P.; Magro,Jacir Dal. |
| Energy consumption in the world has been growing every year. The industrial sector represents 27.32% of the world energy demand. Heating systems that use solar energy may contribute with a percentage of the total energy required by industries. This work aimed to study the use of vacuum solar collectors for water pre-heating in boilers. We used four collectors installed according to NBR 15,569; water flow through the tubes was 0.058 L/s, and temperature in the inlet and outlet pipes was measured. Results showed that instantaneous radiation, and inlet fluid and room temperatures are variables that influence the process, reaching water maximum temperature in the solar collector outlet of 97.9 °C, and efficiency of approximately 65% for most experiments. For... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solar collector; Water heating; Energy efficiency. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000300009 |
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