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I've been trying to find out how to calculate heat loss from a gas or liquid vs. temp. My understanding is that this is not a simple blackbody problem for a variety of reasons... guess it's more a gray-body problem. Have not been successful at finding papers or texts which deal with this specific issue. Are there simple ways to get approximate solutions to this problem or is this much simpler than I realize. Any insights or leads would be appreciated.

Thanks

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# Thermal Radiation from a Liquid or Gas

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