Pump Room Airchange Rate
Pump Room Airchange Rate
(OP)
Gents,
Will glad if you lend me a hand to give an idea about the minimum airchange rate in offshore platform's pump room
Will glad if you lend me a hand to give an idea about the minimum airchange rate in offshore platform's pump room





RE: Pump Room Airchange Rate
What are you trying to do: provide some cooling for the pumps or remove possible fumes? (or both)
RE: Pump Room Airchange Rate
RE: Pump Room Airchange Rate
RE: Pump Room Airchange Rate
Thks for your interset .We cant get the peak heat load cos even the end user cant estimate how many percent of equipment will running at the same time.The max allowable temperature is 45'C.
RE: Pump Room Airchange Rate
What is the local highest possible outside airtemperature?
( If the customer can not give you the required information, then who is to blame if in the future the temperature rises above 45°C..? )
RE: Pump Room Airchange Rate
RE: Pump Room Airchange Rate
Only three degrees temperature difference (45-42), which is not a lot to work with.
I am not familiar with ISO8861.
I would say, propose an air change rate to the end user and have him sign it that he agrees. After all he does not know how much heat will be generated so how can you?!
RE: Pump Room Airchange Rate
RE: Pump Room Airchange Rate
RE: Pump Room Airchange Rate
Johnny H-S BSc(Hons) MInstMC
Engineers like to solve problems. If there are no problems handily available, they will create their own problems.
RE: Pump Room Airchange Rate
Sorry for my engilsh. This is not my nativ language.
RE: Pump Room Airchange Rate
Finally I settle with the airchange 22/hr since I cant get the peak load of individual pumps.
RE: Pump Room Airchange Rate
RE: Pump Room Airchange Rate
Use ASHRAE's heat gain for motor driven equipment, with motor and equipment in the air stream. Add up all the motor heat gains, along with any heat gain from other equipment. Use 25 degF for the delta T, and calculate the required air flow rate.
I've used this for 15 years and it seems to keep mechanical rooms fairly comfortable. If your mechanical room has a lot of equipment in it, the ACH will be 35+.