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I have a problem I would like a sanity check on if anyone has a few minutes. I have a natural gas system designed for about 3" W.C. of pressure drop from the meter/regulator to the most remote burner. The system is approximately 1000 total equivalent feet. The total load at the meter is 10000...

I am having a hard time figuring out what the difference is in Medical Air and Breathing Air. From what I can tell, Medical Air systems must meet the requirements of NFPA 99, but the quality of the air is the same as OSHA Grade D breathing air. Is this correct?

I am having a hard time finding anything on the website. Do you have a link or a title of the publication? Thanks

Anyone know of a good source for HVAC annual maintenace cost estimates based on system type, either per ft^2 or ton? Thanks

Looks like the shortage of engineers we were lead to believe existed is actually quite a surplus (as all of us who have graduated college in the last few years know very well). http://www.redherring.com/Article.aspx?a=14849&hed=U.S.+Engineers+Undercounted&sector=Industries&subsector=Computing...

Tombtech - My last statement I intended to propose that I increase airflow to lower supply temperature. Walkes - My system is hot water reheat vav in an office environment. I guess I am just looking for a ballpark figure/ROT. Do you generally try to stay under 90 F? This seems to be the most...

What is generally the maximum leaving air temperature for VAV system with ceiling diffusers? I have seen temperatures ranging from 85 to 110 degrees. What is the most commonly accepted method for lowering this temperature and achieve desired heating? Are minimum airflows generally increased...

There are very few peers in my age/experience (24, 2.5 years industry experience) range at my local ASHRAE chapter which I find to be a bit of a deterrant. I would enjoy the opportunity to discuss some of the issues of being a young engineer with peers rather than just hear from the seasoned...

What is a reasonable amount of time to ask for to consider an offer?

Geosmith, The following link may also provide some useful info from people who have recently taken the exam. http://ppi2pass.com/ppi/PPIInfo_pg_myppi-faqs-FEadvice.html

I think I have it now. Lots of good information available on utility provider websites, so with a little research it all started to make alot more sense. I am assuming I a misheard the utility company and he said 29.7 kw rather than kwh and this is the peak demand. From this, I calculated...

raisinbran, Thanks for the response. That makes more sense. Just to make sure I have it straight, the peak demand represents the average maximum power delivered to the space over a defined period of time such as 15 minutes? Is this determined by averaging a number of instantaneous readings...

I am trying to calculate the peak demand in amps to a space. The utility company has informed me that the max reading to the space in a 15 minute period was 29.7 kWh. If i have 120/208 V service to the space, am I correct in calculating this as: I=kWh/(V*T)=29.7*1000/(.25*208*SQRT(3))= 329.76...

You can't take reference material to the exam. I think this used to be the case, but now you are only allowed to use the formula book they provide. I took the exam in October 2003 and elected to take the General afternoon section. I have BSME, which I thought prepared me fairly well for the...

It seems to me that few companies are willing to train young engineers. If they can get what they want out of you as a technician, they will take it. If they can get what they want out of you as a drafter, they will take it. If they can get what they want out of you as an engineer doing the...