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Inconsistent Units Formulas - Piping Temperature Parameter

4 ANTWORTEN 4
GELÖST
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Nachricht 1 von 5
_Lachlan_
756 Aufrufe, 4 Antworten

Inconsistent Units Formulas - Piping Temperature Parameter

Has anyone encountered the Inconsistent Units error specifically with a Piping Temperature type of parameter i can't get it to neutralize via the normal methods of dividing or multiplying by 1.

 

4 ANTWORTEN 4
Nachricht 2 von 5
ToanDN
als Antwort auf: _Lachlan_

what is the formula?
Nachricht 3 von 5
_Lachlan_
als Antwort auf: ToanDN

Below is the entire formula with no parameters neutralized

(EMISSIVITY FACTOR * (5.670373*10^-8) * (UNIT LENGTH * UNIT WIDTH) * ((ROOM SETPOINT COOLING + 273)^4 - (COOLING WATER FLOW TEMP + NOMINAL FLOW ΔT COOLING/2+273)^4))

 

But i believe i narrowed it down to the Piping Temperature type formulas because i was able to neutralize the units on the others, the problem ones are:

ROOM SETPOINT COOLING

COOLING WATER FLOW TEMP

NOMINAL FLOW ΔT COOLING

Nachricht 4 von 5
ToanDN
als Antwort auf: _Lachlan_

maybe using Temperature Difference instead, as a workaround
Nachricht 5 von 5
_Lachlan_
als Antwort auf: ToanDN

I have had to use an extra work around on top of the one you have suggested. I can neutralize the units of a Piping & HVAC Temperature Difference parameter but not in the HVAC/Cooling Loads parameter that the formula is driving. So i have neutralized them individually in a Common/Number parameter first and used those parameters in the formula. I tried this with the Temperature type parameters initially before asking on the forum but it did not work.

 

For anyone else's info the problem parameters where not all Piping Temperature type parameters but had the same issue from the list in the previous post:

ROOM SETPOINT COOLING - HVAC/Temperature parameter

COOLING WATER FLOW TEMP - Piping/Temperature parameter

 

I already had NOMINAL FLOW ΔT COOLING as a Piping/Temperature Difference i probably missed neutralizing this initially

 

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