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The Surface Radiation database contains surface radiation emissivities at different temperatures for the 61 most common construction materials. The user may easily add new data to this database.
The radiation database can be edited by selecting Edit/Radiation Database from the menu bar. Since the files are of XLS type you can also edit them directly from Excel. Temperature units available are K and °C. An (n) after the material indicates that the emissivities are normal emissivities and an (h) indicates that they are hemispherical emissivities. Note that the emissivity for a material can vary a lot depending on the surface, for example, a polished surface emits much less radiation than an unpolished one. This window is used when selecting the surface material and pressing the Radiation button.
Heat Loss.pdf
HSC Database Radiation.gif