ScottMECHE
Mechanical
- Feb 21, 2008
- 2
In a previous post, MarcAndre wrote:
>Hi guys
>
>I have talked with an engineer at the company that >designs and makes our bitumen tanks. He sent me two >charts that give a good approximation of "Average Overall >Heat Transfer Coefficients" for different heating and >cooling applications. Also, he gave me an approximate >heat loss coefficient for storage tanks.
>
>I have:
>U= 10 to 20 BTU/(hr ft^2 F) (For heat tr. oil to bitumen)
>U= 0.11 BTU/(hr ft^2 F) (for storage tank 2'' ins. for >delta T about 200F)
I have calculated similar U values for some of my asphalt/heavy oil tanks - though determining the fim coefficients seems to be a bit more than a guess.
I would be really interested in any information the users of this forum could point me to (such as the charts MarcAndre alludes to) that would help me determine appropriate fim coefficents for asphalt, heavy fuel oils, etc in steel tanks.
Thanks
Scott
>Hi guys
>
>I have talked with an engineer at the company that >designs and makes our bitumen tanks. He sent me two >charts that give a good approximation of "Average Overall >Heat Transfer Coefficients" for different heating and >cooling applications. Also, he gave me an approximate >heat loss coefficient for storage tanks.
>
>I have:
>U= 10 to 20 BTU/(hr ft^2 F) (For heat tr. oil to bitumen)
>U= 0.11 BTU/(hr ft^2 F) (for storage tank 2'' ins. for >delta T about 200F)
I have calculated similar U values for some of my asphalt/heavy oil tanks - though determining the fim coefficients seems to be a bit more than a guess.
I would be really interested in any information the users of this forum could point me to (such as the charts MarcAndre alludes to) that would help me determine appropriate fim coefficents for asphalt, heavy fuel oils, etc in steel tanks.
Thanks
Scott
