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Re: [TRNSYS-users] Ground back heat transfer coefficient
Nalin,
A very large value of convection coefficient indicates that there is a
high level of coupling between the boundary temperature and the outside
surface temperature. A value less than 0.001 indicates that there is
direct contact (ie no temperature difference at all) between the surface
and the boundary temperature. If your high value is high enough, then in
effect you have direct coupling. If you choose a small but not too small
coupling value (0.1 for example), you may see some difference.
Kind regards,
David
NALIN SWAROOP wrote:
hello all
Why does trnsys gives a very large default value(999) to the back heat
transfer coefficient of the ground layer?what does large value signify?
and as ground is defined as the boundary should'nt just the boundary
temp. value a sufficent input??
I have kept the value to be small(<.001) and large (1000) but there are no
changes in the results.
TIA
Nalin Swaroop
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