All Standards on ARIs Website are free and can be downloaded to pdf.
I believe this one should help you out:
http://www.ahrinet.org/ARI/util/showdoc.aspx?doc=953
If this isn' what your looking for look around in the standards section.
I hope this is helpful.
Good Luck!
I hope this is helpful.
There is a fee version of B&G's Systme Syzer on there website:
http://www.bellgossett.com/BG-SystemSyzer-for-Windows-download.asp
If you want to provide me your email address I can shoot you an xcel spreadsheet that may or may not be what your looking for; it's pretty good.
It is...
Has anyone used Trane's CDQ technology? If so I would be interested in any feedback that might be worth sharing: advantages, disadvantages, misconceptions, lessons learned, maintenance issues, perhaps other considerations that may not be mentioned here.
I'm looking at a particular application...
See the following link:
http://uccsuiouee.org/seminars/UC%20CSU%20VAV%20Design%20Guide.pdf
The attached link is for a VAV design guide that provides some practical information. Pages 29, 30, 31 I belive provide itemized listing of advantages vs. disadvantage. There are some very valid points...
I appreciate all of your responses. I would however comment myself that the discussion has veered off track slightly here.
1.Do the values have a specific known published origin?
2.Why the descrepancy?
BronAraur thanks for your thoughts as they spoke directly to what was asked.
A couple of...
Typically I've seen the HVAC industry's most common rule of thumb for sizing low velocity duct to be:
(.08-.1 " wc/100 ft) for supply duct.
(.05" " wc/100 ft) for return duct.
Does anyone know if these values are published and if so where exactly?
Why the discrepancy between values?
I was...
While searching the ASHRAE website to purchase the 2001 ASHRAE 90.1 Standard I noticed that they offer a User's Manual as well. Is anyone familiar with this manual? Is the entire standard repeated within the manual? The Manual is over double the size of the Standard and if all information is...
Is the building using typical programmable set back thermostats for night and weekend? These units raise temp set point for cooling and lower heating temp set point to save energy during unoccupied periods.
Likewise I'm not sure of your climate but in some climates economizer modes are offered...
I find that typical sizing tables for gas piping are not thoroughly informative for purpose of sizing pipe design. Does anyone have a suggestion that would allow a section by section calculation to accurately determine pressure drop based on demand and pressure?
To clarify my above statement...
I certainly appreciate everyone's viewpoints. It has been said, "that a manager pushes, while leader pulls individuals in an intended direction." I am looking for an environment governed by more leadership and less management. It is very possible that I might someday like to shift into...
Thanks for the input. I’ve had three jobs to date, having made a recent move only to find the much of the same at my latest. All the jobs have provided me with good experience and a general fondness for the profession, and I’m grateful for that; I simply have an intuitive feeling that there’s...
I am a graduate mechanical engineer who has worked professionally now for just over five years in HVAC design, and am finding myself increasingly discontent. I am now considering a return to school to attend a graduate program in hopes of further career development. I fell into HVAC design as...
Does anyone out there have a quick lisp or other means of drawing flex duct (basically an arc with smaller alternating arcs or vertices propogated down the large arc)for HVAC plans. This may possibly be done within autocad with no outside lisp; if so I am unaware of it. Anyhow any direction...
Thanks Pedarrin2 for the reply. I understand the need for storage, but that is a good point. Our original plan was to install 2 new 199 MBH, 100 Gallon, water heaters, however, after a site visit last week I now know that we can fit one unit, however the adjacent spot for the other is...
Thanks for the information, however, I have used similar electric instantaneous water heaters in the past and nothing like that will work for this application.
I'm looking at the Bosh because their product is more than just a point of use system. I have seen them used in the past for Dishwater...
Has anyone out there had any relevant experience with instantaneous gas fired water heaters—particularly the Bosch Aquastar 240 FX or similar.
I am currently looking at a job requiring a considerable amount of hot water for domestic use with very limited space in the existing mechanical room...
Given your experience it sounds like you would be the perfect candidate for a CAD teacher, either in the business sector or possibly at the university level. You would have to do a little research but I'm sure there is a need out there and it would get you out of production work. Many...
