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Type: Posts; User: joeseffus

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  1. Replies
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    785

    This is the Ask Our Pro's forum, and only Pro...

    This is the Ask Our Pro's forum, and only Pro members that have been vetted by the AOPC may post advise, commentary, or ask questions of the OP here.

    You can find the rules for posting and...
  2. Replies
    5
    Views
    785

    This is the Ask Our Pro's forum. In order to post...

    This is the Ask Our Pro's forum. In order to post a response here, you must have verified qualifications and have been approved by the AOP Committee. You may ask a question by starting a new thread....
  3. Replies
    5
    Views
    785

    This is the Ask Our Pro's forum. In order to post...

    This is the Ask Our Pro's forum. In order to post a response here, you must have verified qualifications and have been approved by the AOP Committee. You may ask a question by starting a new thread....
  4. This is the Ask Our Pro's forum. In order to post...

    This is the Ask Our Pro's forum. In order to post a response here, you must have verified qualifications and have been approved by the AOP Committee. You may ask a question by starting a new thread....
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    2,334

    Carrier Equipment

    D005 sounds like a 4-ton.
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    1,959

    Rheem Rooftop Units

    Does anyone know where I can get information on older Rheem rooftop units? NRGR and NSPR series. As a consulting engineer I have never specified a Rheem unit because no Rheem representative has...
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    5,691

    Carrier recommends that for ideal ventilation CO2...

    Carrier recommends that for ideal ventilation CO2 should be at 589-900 ppm. They got this from ASHRAE 62-1999, there should be more info in that standard.
  8. Thread: Ice Storage

    by joeseffus
    Replies
    23
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    3,252

    The ice storage system I saw was not installed as...

    The ice storage system I saw was not installed as designed. The storage tanks we above ground and the owner said it never worked. Their contractor bypassed the entire ice storage system and used...
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    1,146

    If you have multiple evaporators on teh same...

    If you have multiple evaporators on teh same condenser I think you need another product that Mitsubishi calls an inverter?? Something else to regulate the refrigerant to all of the evaporators,...
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    2,704

    I didn't mean to talk about Aerco in a negative...

    I didn't mean to talk about Aerco in a negative way.
    We have specified many Aercos and they all operate great.
    I was just wondering why the Fulton Boiler uses a pulses combustion rather than a...
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    2,704

    That was the whole point of the presentation....

    That was the whole point of the presentation.
    They have the new fulton pulse that is really quite, 72 dB.
    They had it running on a truck that they pulled up to our office. You do have to install...
  12. Replies
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    5,691

    What advantages do fan powered VAV boxes have...

    What advantages do fan powered VAV boxes have over single duct, no fan boxes? I udnerstand if there is electric reheat you want to keep air moving across it, but if the boxes are served by a...
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    2,251

    My company has a project where there is an...

    My company has a project where there is an existing 30 ton ACME chiller. It is only two years old.
    Has anyone had any experience with ACME chillers?
    I know they are manufactured by Ketema LP,...
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    I just saw a presentation on the Fulton Pulse...

    I just saw a presentation on the Fulton Pulse boiler.
    I understand the condensing nature of the boiler and the larger heat exchanger area, but why make the boiler pulse?
    What advantages are there...
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    2,118

    Pitot Tubes

    If I remember my Fluids Lab correctly, Pitot Tubes will measure static pressure. In order to figure out the velocity you need to know the TOTAL PRESSURE - STATIC PRESSURE which gives VELOCITY...
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    4,175

    If the bypass damper is operating correctly, it...

    If the bypass damper is operating correctly, it is my udnerstanding that the VVT system should work regardless of where the bypass damper is located. Why would it matter if the bypass damper is at...
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    2,118

    I am not sure where you got the 0.95 from, but if...

    I am not sure where you got the 0.95 from, but if you take feet/ minute times square feet you should get cubic feet/minute. I would expect about 1400 cfm of air. Is it a wheel type anemometer? Try...
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    I understand all of your comments, but can...

    I understand all of your comments, but can infiltration really lead to this much humidity where it is condensing on a wall at 75F?
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    1,367

    Here is the situation: There is a carecenter for...

    Here is the situation:
    There is a carecenter for adults in NJ that is having problems with humidity.

    Each room is designed like a hospital, two beds, a bathroom. The HVAC system is a...
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    riverman, check out http://www.hvacpartners.com...

    riverman, check out http://www.hvacpartners.com you can register for a password and user name and get information on all Carrier equipment ever built (I think). It did take me a month to get the...
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    Actually we have been designing with Propylene...

    Actually we have been designing with Propylene Glycol because of its less toxic nature, but I am not sure what the contractors put into the system... I am but a lowly engineer.
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    In New Jersey we have been designing systems with...

    In New Jersey we have been designing systems with 40% Ethylene Glycol in order to avoid freezing. I researched this through http://www.dow.com where they have a lot of information on their glycol...
  23. Thread: VAV vs. CV

    by joeseffus
    Replies
    6
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    1,730

    I have used Carrier's Hourly Analysis Program....

    I have used Carrier's Hourly Analysis Program.
    You can order the 90 day evaluation version and model your building and see if it is the same savings.

    I am curious about the energy recovery wheel....
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    There is no rule of thumb for a distance. Each...

    There is no rule of thumb for a distance.
    Each manufacturer has different capabilities for different distances.
    For example a Carrier HDC condensing unit can be placed up to 200 equivalent feet...
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    Typical drawbacks are first price. The...

    Typical drawbacks are first price.
    The condensing boilers I have come across are sometimes more than twice as much as typical non-condensing boilers. In addition, the flue needs to be am aluminized...
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    Typically transducers are piezoelectric polymers...

    Typically transducers are piezoelectric polymers where when a force is exerted upon them and they deflect the polymer generates an electric current proportional to the deflection. This is how your...
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