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Melhoria da transferência de calor do aquecedor de ar solar utilizando nervuras circulares

Melhoria da transferência de calor do aquecedor de ar solar utilizando nervuras circulares

          
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About the Book

O termo aquecimento solar do ar refere-se a uma tecnologia em que a energia radiante emitida pelo sol é captada num absorvedor e utilizada para o aquecimento de espaços. Escusado será dizer que se trata de um método renovável e isento de poluição para produzir aquecimento ambiente e, quando utilizado em edifícios comerciais ou indústrias, pode ser muito económico. Os aquecedores de ar solares convencionais têm uma eficiência térmica baixa devido ao baixo coeficiente de transferência de calor entre a placa absorvente e o ar, o que leva a uma temperatura mais elevada do absorvedor e, consequentemente, a perdas térmicas mais elevadas. Foram feitas tentativas para aumentar a transferência de calor para o ar que flui através da conduta do aquecedor solar de ar utilizando absorvedores com alhetas, absorvedores de leito empacotado, absorvedores ondulados, fluxo de ar de duas passagens, placas de vidro sobrepostas, absorvedores com nervuras artificialmente rugosas, etc. Em conclusão, a investigação experimental efectuada para recolher dados extensivos sobre condutas de aquecimento de ar solar desbastadas artificialmente revelou que, ao desbastar a parte inferior da placa de absorção da conduta de aquecimento de ar solar com uma nervura transversal circular, o desempenho térmico é melhorado.


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Product Details
  • ISBN-13: 9786206231905
  • Publisher: KS Omniscriptum Publishing
  • Publisher Imprint: Edicoes Nosso Conhecimento
  • Height: 229 mm
  • No of Pages: 92
  • Spine Width: 6 mm
  • Width: 152 mm
  • ISBN-10: 6206231909
  • Publisher Date: 27 Jul 2023
  • Binding: Paperback
  • Language: Portuguese
  • Returnable: N
  • Weight: 145 gr


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