| Autor: |
Yen-Hsun Chen, King-Leung Wong, I-Pin Kuo, Chuan-Huang Lin, Jin-Yu Lin |
| Předmět: |
|
| Zdroj: |
International MultiConference of Engineers & Computer Scientists 2009; 2009, p1952-1957, 6p, 2 Diagrams, 3 Charts, 8 Graphs |
| Abstrakt: |
Heat radiation equation contains 4th exponential order of temperature which makes mathematics analysis very complicated and troublesome. Therefore, most heat transfer experts and scholars believe, based on their own experiences, that the heat radiation effect can be ignored due to small temperature difference between insulated surfaces and surrounding to simplify analysis. Due to this reason, insulation examples shown in most heat transfer, air conditioning and refrigeration text books, and some commercial packages for the design of insulations, commonly ignore the effect of heat radiation. However, this paper demonstrates that the heat radiation effect can not be ignored in the situations of thin insulation with low ambient convective heat coefficient and a large surface emissivity. In those situations, ignoring the heat radiation will result in an inaccurate insulation design. The paper also shows that a smaller insulated surface emissivity can largely promote the insulation effect. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
