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You can read FGI Guidelines for Design and Construction of Health Care Facilities. This document incorporated the Ashrae Standard 170-2008, Ventilation for Health Care Facilities. Other useful source...

I think the supply air temp need to be lower than 43F, because RSHR of the room. With this kind of requirement, I think Trane CDQ is suitable.

Believe me, you gonna get crazy if you come to my country, Vietnam :grin2:. In summer, it's about 100F and above 80% RH outside :gah:

Just put a mark!. I'm the first one in my location, Hanoi city of Vietnam :).

You means about Bell & Gossett?

http://www.bellgossett.com/Press/BG-energycode.asp

Yeah, I got it. I understand that there's always a gap between the reality and the calculation. However, I like to learn more and more about design, and I want to find out the way to minimize that...

In my country, the most common type is rectangular duct and the most common reason is price :D.

In my knowledge, round duct has lower friction loss than rectangular duct. Besides, it has better...

Dear CoastalAir: I enjoy this forum in a same purpose like you: learning.

So, I can post here? it's ok? :D

Just do the Google search for you to imagine easier:

You are correct. Though quite safe, it's still possibility of leaking. Safety, i think, is the most common factor when someone thinks about ammonia system.

Here is article in Ashrae Journal -...

So, it would be so kind of you to share with us your training documents, thanks in advance :).

I'm very interested in refrigeration with ammonia. Two years ago, I read an article on Ashrae's Journal, its title is "Ammonia Future". There are some examples of using ammonia as an refrigerant in...

Yeah, it's seem that the difference between calculation and reality happens everywhere. I'm a Vietnamese and the situation we faced here is pretty like you: change pulley's diameter, pump can not...

Yeah, I understand your way. However, I found that maybe the total friction loss on duct line will higher when we use equal velocity method. This leads to the higher head of fan that we have to...

@larrydfw: He is true :D

In my knowledge, there are two common ways to calculate dimension sizes of air duct and water pipe: Equal friction and Equal velocity.

I always use equal friction method, because it's seem easier...

Here are some books on Pneumatic.

Pneumatic Handbook (8th Edition) (33Mb).
http://filefactory.com/file/f2bab7/n/185617249X.zip
Pneumatic Conveying Design Guide, Second Edition ...

I read this article a long time ago, when it published in 2008. The article and its comments are also impressed on me, so I shared it here.
...

...Or may be topic's owner misunderstood his instructor's saying :D

I attached here an Ashrae Journal's Practical Guide on "Designing Cleaning Room HVAC System". Hope this can help you a little bit :)

http://www.datarec.ru/files/schneider.pdf

To easily calculate the drain volume, you can refer to the example in attachment:

Vd= ∆d.g=(0.0225-0.0087).3x1.2=0.04968 kg/s = 2.98 l/s

of which: ∆d: Moisture content difference; g: weight of...