×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Swimming pool heating

Swimming pool heating

Swimming pool heating

(OP)
Has anyone got good reference, research paper detailing how swimming pool losses is determined and calculated?

For example, most common information from website and books say 70% is due to water losses into air, 20% due to radiation and 10% is due to conduction losses into soil.

I like to know where 10% figure come from and the proof, assumption they used.

Simple heat transfer calculation with U=0.5W/m2K suggest (with soil temp 10C and pool water at 27C) the losses in contrast appear to be much higher than simple assumption 10%.

There is no material within ASHRAE covering pool losses via wall.

Much appericated.    

RE: Swimming pool heating

ASHRAE has heat loss calculations in natatotium design.

RE: Swimming pool heating

Most of the pool heater manufacturers, as well as companies that focus on pool ventilation (PoolPak, etc) have stacks of information on heating pools.

Rather than guessing the percentage, you could work out the heat loss (as you have) through the wall at steady state and add it onto your other heat loss calculations.

The heat loss calculation from evaporation, radiation and convection are all available from a variety of sources.

RE: Swimming pool heating

I would bet all the equations used stemmed from or evolved from what was developed for Dectorn's Dry-o-trons

the biggest heat loss from the pool is evaporation

Try searching for Reinhold Kittler he pioneered it all

Take the "V" out of HVAC and you are left with a HAC(k) job.

RE: Swimming pool heating

water at 1000 btu/lb may just dwarf what conducts out through the pool

Take the "V" out of HVAC and you are left with a HAC(k) job.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources