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Pressure is not a part of load calculations. You can achieve everything by precise calculations and standard equipment. There are other calculations for dehumidication only, where you need to consider vapour permeation through different building envelope materials. You can't depend on only one calculation.

Yes

@ can please provide the excel sheet.?

@ would you provide the excel sheet.?

@@Abbaskhan-l3d its in video description

@ password protected

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@@passionateengineer04 i already emailed you thru email. thanks

Please find it in video description

@@vtv5143 for what purpose?

@vtv5143 zero degree means fully open, but at site, it's not possible that fully opened damper can control the flow.

You can find link in video description

Yes, its individual zone temperature control system.

Please watch staircase pressurisation calculation video, it same as lift

But don't consider open doors

You mean for HAP 5.1?

@passionateengineer04 any version above the 4.9 version

Crack version is available

Can you upload all videos

You mean part-2

Heat release.

@ahmedshafath this is just for the purpose of understanding the software. There are different places where WB is above 80. During load calculation, always calculate at 2 conditions ,1- maximum dry bulb temp, 2- at dedumification conditions. The coil will selected either based on condition 1 or 2 which ever is greater.

You can with HAP, but not always. You must have knowledge of how to do that with psychometric.

@@passionateengineer04 Thanks , is there any video or ASHRAE Psychrometric is enough, I read from it they are stating that " It is best practice to contact a cooling coil manufacturer (or run their cooling coil selection software)

The best way is to contact the manufacturer, but you have to provide coil ADP, which depends on the loads conditions. Psychometric is a quick way to analyse what you need and what will be provided to manufacturers

Thanks a lot , what about Coil ADP provided by HAP can this be relied.

It is also good if you did the calculations in the right way because internally, you have no idea how HAP is calculating the coil ADP. HAP is based on heat balance.

There is a formula in the Excel sheet, which is directly converting the value. I'm sorry to show this in the video, but you can follow your calc.

It's in the video description. Thank you

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Sure

@@passionateengineer04 I'm waiting

Its standard depends on the door opening force. Refer NFPA and ASHRAE handbook

@@passionateengineer04 Do you have design calculation for Fire Lift Shaft pressurisation and fire fighting lobby?

@ShashiSanmukhiya yes

@@passionateengineer04 can you send me the link for the video on youtube if possible.

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If you want a detailed calculation, refer to ASHRAE, you need to calculate wall leakage, door leakage, etc. Before this, you need to calculate the required cfm based on ACH min of 20 for cleanrooms

No, it's just area calculation. Wastage will be added in weight sheet

Can I also get a copy of the drawing?

Share your email address please

Sorry, not available

Sure, and I have also selected some topics for other video, but unfortunately, we are busy withn some projects Thank you

Hi

Sorry for that, but you are not right, ACH is a part of load calculation. Based on this, you will select equipment and cfm/ton. Coil load and supply air temp depends on this. Thank you

@@passionateengineer04 thanks for your reply ,, but I did many cleanrooms in Canada ,, ACH doesn't mean fresh air ,, these are two different things ,, I agree that fresh air is part if the load calculation and it can be part of the ACH ,, but considering that ALL the ACH is fresh air is something that we don't do .

Both ACH are part of load calculation. If you are working in Canada, then it's also the same, but the difference is the fresh air unit, like if you are using HRV, makeup air unit etc than you don't need to consider the fresh air ACH. You can do differently, calculate the load, and than put user define air flow based on ACH.

In which province of Canada are you working? Are you familiar with CSA Z317.2? ALBERTA COLLEGE OF PHARMACY?

@@passionateengineer04 I work in Ontario,, would be great if we can have a call to discuss.

Sorry, i didn't use it on macbook yet, i am using it on Windows 11. You may check the internet for a solution.

You can try looking up a software for emulating windows 11 on ios and run it there

Please check the video description

Sorry, i didn't understand your question, can you please elaborate?

if you know the load then you can use sensible heat equation that Q= 1.08xcfmxdelT

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I got it from the description. You shared it already.

Can you please help me where to find the excel file ?

@@GEORGEPAPATHANASIOU-b3k go to the video description. The is there

@@GEORGEPAPATHANASIOU-b3k passionatengineer.blogspot.com/2023/03/staircase-pressurization-system-design.html

It's depends on the situation. The fire area is actually the area separated by fire rated walls if the attrium wall are fire rated and fire will not transfer from internal space like shops etc to the attrium,than only attrium area will be considered as a fire area.

It's just for calculations.all depends on the building orientation