Heat circle -- Calculating the air flow needed across a condenser

AI Thread Summary
To calculate the necessary airflow across a condenser, the user seeks to ensure that the heat emitted is effectively directed into the air, with a temperature difference (dT) of 10-15°C and a coefficient of performance (COP) around 3. The initial airflow provided by the fan is 0.67 m³/sec, but it is questioned whether this is adequate for the system described. Forum members request the data sheet for the specific air conditioning unit to better assess the situation. It is noted that the fan's airflow capacity appears significantly lower than what is typically required for condenser fans, which should generally have about twice the airflow of evaporator fans. Accurate sizing and specifications are crucial for effective system performance.
yagel2801
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Hi!
I need to calculate what air flow needs to flow across the condenser so that the heat emitted from the condenser is directed to the air.
dT=10÷15 [C]
COP =~3
According to the manufacturer's data the fan airflow is 0.67 [m^3/sec] and i need to check if i can use it.
thanks
 
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Welcome to PF.
Please provide us with a link to the manufacturer's data sheet, for the product you are using.
 
thank you.
https://www.mouser.co.il/ProductDetail/670-OA825EC-UR-1WBXC
 
yagel2801 said:
thank you.
https://www.mouser.co.il/ProductDetail/670-OA825EC-UR-1WBXC
That's a fan. It doesn't seem to have anything to do with the system/problem described in the first post (it doesn't have the same airflow). Please provide the data sheet for the system in the firs post (an ac unit?) and fully describe the system, application and problem you are trying to solve. We can't read your mind.

[edit] Ehh, maybe I can. Are you trying to size a condenser fan for an air conditioner with evaporator specs as listed in the OP? If so, then no, you can't use a condenser fan that's 35x lower capacity than the evaporator fan. Condenser fans are generally on the order of twice the airflow of evaporator fans. Exactly how much you need...well, again, look at the product data for the air conditioner (and why doesn't it already have a condenser/fan?).
 
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