How to calculate the leaving coil temperature

[TropicalDream]

Hi,

I am new to HVAC and was wondering if you could help me to calculate the leaving coil temperature for a unit that serves a room with 20% OSA 1000 CFM Draw-through fan?

Here is the additional data.

Room capacity: 2 people 250 btuh sensible, 250 btuh latent.
Room temp: 75°F db 65°F wb
Room lighting: 500 Watts
OSA: 100°F 42% RH
Supply air is 55°F
Fan power = 500 Watts

Thank you.

 

[willard3]

You will have to contact the coil mfg for this information.

 

[EnergyProfessional]

If you have 55°F supply temperature... that is your leaving temperature.
If the fan set up is draw through, the fan adds about 1.5 - 2°F. so the coil leaving temperature must have been about 53°F

 

[LittleInch]

Your question is not clear.

Do you mean air temperature or water temperature?

Where did 55F come from? - That surely is the air temp going into the room?

The coil can only reduce temperature to a certain point depending on the cold water temp and the amount of air and surface area of the coil.

If the vendor says with 100 CFM and incoming air at 75F and water temp of ?? maybe 40F, then outlet temp is 55F it won't do anymore.

But I don't understand your question.

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