Chewing tobacco specific heat

[Zoso71]

Anyone have a specific heat capacity source for chewing tobacco. I have been asked to cool approx 5,000 pounds from 100 degrees F to 42 deg F. I do not know the Cp.

 

[chicopee]

I dont know the Cp of tobacco either so you may want to estimate with other konwn materials such as brown paper; then select a number between that Cp and that of water. Obviously water content in the tobacco leaf plays a major role in the Cp. You can also try to estimate the water content and determine cooling requirement to lower the temperature of that water content.

 

[vpl]

I think you will be able to find the information you want in the "International Critical Tables of Numerical Data, Physics, Chemistry and Technology", either in Volume 2 or Volume 5. There is an electronic version available at

http://www.knovel.com,

but I don't have access to it (they do appear to offer a limited free access).

Thomas (Heat Transfer - Professional Version) lists the "International Critical Tables" as a source for many of his material property tables. He doesn't list tobacco; however wood has k's between 0.055(balsa) and 0.166 (hard wood)across the grain and fruit, with a 75% moisture content, has a k value of 0.513. Kreith (Fundamentals of Heat Transfer) also lists the "International Critical Tables" as the source for material properties; he notes that for wood parallel to the grain, the k value is approximately double of that across the grain.

Hope this is of some help.

Patricia Lougheed

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[JoeTank]

I assume we are talking about a new product, not used.

Steve Braune
Tank Industry Consultants

http://www.tankindustry.com