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Recent content by sathanasiou

  1. sathanasiou

    Oval Ducts

    Does anybody know where I can find an oval duct manufacturer in Europe? Thanks!
  2. sathanasiou

    Effect of emitted light on heat loss calculation.

    I believe you should include it in your calculations. I always take into account ligth energy- especially in areas with electronic equipment.
  3. sathanasiou

    HVAC Running Cost

    You could calculate the cost using this: (cost of electricity)*(consumption)*(hours of operation/day)*(days of operation/year)=cost for one year Note that power consumption is usually different in cooling and heating modes, so do the calculations for both and add them up. If you divide the...
  4. sathanasiou

    Slim line fan coil needed

    Trane has some fan coil units that you could use- I think the type is Slim Line HFO. www.trane.com
  5. sathanasiou

    Laundry room

    I would keep the pressure negative and use a dehumidifier in order to keep the room dry.
  6. sathanasiou

    Cable selection

    I need to supply a three-phase transformer that has a peak/starting power of 7kVA. Voltage supply im my country is 230V. If my calculations are correct, the starting current on each phase is 8.2A and I selected a 5*2.5mmm2 cable with a 3*10A fuse. Will that be ok? Thanks!
  7. sathanasiou

    Heat Pump Vs Boiler

    How about gas fired absorption heat pumps? Try the following links: www.robur.com www.broad.com
  8. sathanasiou

    Pump sizing concern

    I agree with the pump selection. In any similar case, you add the flows needed and take the pressure of the last fixture of the circuit, or the fixture in the most disfavored position (by the means of pipe length, curves, orifices, etc). If you consider the equivalent electrical circuit, flow is...
  9. sathanasiou

    BTU/hr converison to kilo Watt

    For any conversions try downloading "Convert" from www.joshmadison.com/software/
  10. sathanasiou

    Com Room Heat Loss

    You can use the following figures as a guideline: People: 74 W/person sensible and 58 W/person latent Lights: 2.5 W/ft2 Equipment: 1.0 W/ft2 Hope this is usefull.
  11. sathanasiou

    Pressure reduction

    The flow is way too big for the 10" pipe! You should increase the pipe diameter or connect a second 10" pipe in parallel with the existing one to distribute the flow. You will need a collector where the two pipes meet. For the second case (1600 m3/h) you will need more than two parallel pipes...
  12. sathanasiou

    Seawater application

    Try using PVC or PP. If you do use stainless steel be sure to use plenty of sacrificial anodes. I find the following links very useful: http://www.corrosionsource.com/discuss2/ubb/Forum43/HTML/000006.html http://www.corrosion-doctors.org/MatSelect/rouging.htm...
  13. sathanasiou

    Electrolysis

    Can electrolysis occur between a stainless steel plate and an iron water pipe?
  14. sathanasiou

    Electrolysis

    Can electrolysis occur between a stainless steel plate (of a heat exchanger) and an iron water pipe?
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