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  • Users: rk27
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  1. rk27

    Looking for opinions on Carrier 23XRV

    If anyone in the Chicagoland area operates these, and would like to share their opinion, I would greatly appreciate it. Thank you in advance.
  2. rk27

    Thermal / Mechanical Energy

    I need to know if the following is a valid train of thought. Current philosophy states that in a data center each watt of electricity is converted to a watt of heat. You then use this for load calulations. I have noticed that with the Hitachi Tagmastore there are a lot of hard drives. These...
  3. rk27

    40% glycol solution and ton of refigeration

    Thank you to everyone for their speedy replys. The main reason for my post was I have a primary-secondary loop. The calculation for the secondary loop , using an ultrasonic meter permanently attached to the piping, is approximately 96 tons. If I apply the same formula to the primary loop, I get...
  4. rk27

    Water-Ethylene Glycol mixture properties

    The link below will give you all the information you need. http://www.engineeringtoolbox.com/24_146.html
  5. rk27

    40% glycol solution and ton of refigeration

    I am trying to work out if you can use the rule of thumb formula for tonnage when using 40% glycol. ton = gpm X delta T / 24. This is translated to ton = gpm X delta T X 500 / 12000 or ton = gpm X delta T X Sp Gravity of fluid X Sp Heat of fluid X 60 / 12000 Well for water every thing is great...
  6. rk27

    Humidification / dehumidification : gr/lb and temp change

    Could someone tell me if the following assumption can be made ? If the building takes in outside air at 55 degF / 60% RH which has 38.52 gr/lb moisture, I can then assume if this air is heated to 70 degF, it will have 35.35% RH, because the moisture content remains the same.

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