For convectors/baseboard what does U-factor times area (btu/h*R) actually mean in OpenStudio? - Unmet Hours

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For convectors/baseboard what does U-factor times area (btu/h*R) actually mean in OpenStudio?

asked 10 years ago

Mel
425 ●3 ●10

updated 9 years ago

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4446 ●5 ●17 http://bleedinggreenna...

For convectors/baseboard, when I'm modeling an existing building, instead of auto sizing I'd like to enter in btuh of the existing equipment but the field is U factor times area. What does this actually mean? Btuh divided by the delta T?

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answered 10 years ago

Mel
425 ●3 ●10

updated 10 years ago

Thank you. the answer is: UA is the heat transfer coefficient. q=UA*DeltaT, so the UA is btu output of the convector or baseboard divided by the delta T in deg F across the convector or baseboard when working in English IP units.

Comments

This is wrong. Delta T is between the average water temperature and the average air temperature, not the deltaT across the coil of the same media

TheEnergyTutor ( 2 years ago )

1

answered 10 years ago

Kyle Benne
6057 ●4 ●9 https://www.openstudio.net/

Does the Input Output Reference clear things up.

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Asked: 10 years ago

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Last updated: Oct 24 '14

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