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02-12-2021, 10:10 PM #1
Pressure relief valves for large walk in freezer
Is there an accepted formula to calculate the number of PRV's required in a specific sized freezer room?.
Derek
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02-12-2021, 10:52 PM #2
Re: Pressure relief valves for large walk in freezer
Don't know about calls but this advert has some sizing data which might be of use.
Click on the 'document download"
https://www.ixl.co.th/en/products/ac...-relief-ports/Brian - Newton Abbot, Devon, UK
Retired March 2015
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02-12-2021, 11:03 PM #3
Re: Pressure relief valves for large walk in freezer
Hi Derek,
check this link, too
https://www.fermod.com/valve-2227-cat4-prd342-fp.php
here you can find info you need .... check download at bottom of the page ...
Best regards, JosipLast edited by Josip; 02-12-2021 at 11:12 PM. Reason: wrong link
It's impossible to make anything foolproof because fools are so ingenious...
Don't ever underestimate the power of stupid people when they are in large groups.
Please, don't teach me how to be stupid....
No job is as important as to jeopardize the safety of you or those that you work with.
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02-12-2021, 11:47 PM #4
Re: Pressure relief valves for large walk in freezer
Derek,
Go out the back, you will find some in your warehouse https://www.crh.com.au/products/refr...-relief-valves
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06-12-2021, 11:14 PM #5
Re: Pressure relief valves for large walk in freezer
I just wandering how often people use these PRVs? Personally I didn't see any PRV.
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07-12-2021, 06:16 AM #6
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07-12-2021, 06:39 PM #7
Re: Pressure relief valves for large walk in freezer
I can’t imagine industrial freezer or blast freezer to have absolutely tight doors. In addition every cold room has evaporator with drain line going outside of that room. I can’t imagine how to get vacuum in industrial cold room.
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07-12-2021, 07:20 PM #8
Re: Pressure relief valves for large walk in freezer
Segei,
Understand what you say, but is probably insurance for possible event.
Client had a -40 blast carton tunnel at abbatoir was turned off for several weeks for maintenance.
Client turned on with maximum cooling power, room imploded due to rapid contraction of air in refrigerated space.
Other reasons in link below
https://www.cold-rite.com.au/post/pr...rooms-freezersLast edited by RANGER1; 07-12-2021 at 07:26 PM.
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07-12-2021, 11:21 PM #9
Re: Pressure relief valves for large walk in freezer
RANGER1,
I mentioned about industrial refrigerated room. I did't see any door that is perfectly tight. Walk-in freezer is the different story. Regular swinging door with good seal can be done tight. Industrial freezers have sliding or overhead doors and these doors are not tight.
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08-12-2021, 09:48 AM #10
Re: Pressure relief valves for large walk in freezer
Segei,
We in Australia generally use them on industrial installations of all types.