Heating load temperature

[Fenixseravgon]

Dear All

A cleinte give me a temperature for calaculation of the heating load less than the temperature for the cooling load, what should i do to use the recirculation load or use the cooling load to calculate the flow in the AHU?

Thanks in advance

Sergio Avila

 

[quark]

Including some numbers will give us better understanding of the problem.

 

[willard3]

You should tell your boss that this isn't your field and he should hire an HVAC engineer.

 

[GT-EGR]

Your return air temp in heating mode will be your design temperature (space temperature) less any heat loss it will see along the way. So if you have a plenum or outdoor ductwork or if you are mixing outside air into the unit, you’ll have some number lower than the room temp entering your heater

Heating setpoints are typically lower than cooling, so nothing wrong with that.

But from the sentences within your question, it sounds like you should stop and consider whether or not you are up this task

 

[chicopee]

draw a sketch of the system under consideration will all input and output (temperature, humidity, flow rate, heat rates) labeled and as stated above with numbers so that we have a better understanding of the description in your OP.

 

[LittleInch]

Do both and choose the higher load.

Too many variables to guess at this remotely.

My guess would be the cooling load as the temperature difference air to matrix is probably lower so needs more air to achieve the same impact.

But it needs both to be considered.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.