Help- Costs for Water heat under concrete
Help- Costs for Water heat under concrete
(OP)
I work in a steel mill and have a lot of return hot water from our mill. I would like to tap off from our header and funnel the hot water under the concrete to keep the concrete warm. We have all this hot water and we would like to utilize it. Anyone done anything like this? Looking for information on the process.





RE: Help- Costs for Water heat under concrete
RE: Help- Costs for Water heat under concrete
Check out this site for more info:
http://www.wirsbo.com/main.php?pm=1&mm=0&sm=0&pc=homeow...
RE: Help- Costs for Water heat under concrete
Underfloor radiant heat has been around for a long time. You should be able to find a lot of information on the topic. You should also talk to a good HVAC engineer in your local area about the costs, design aspects and problems associated with it. It could be a good way to make use of your waste heat.
ERV notes a type of pipe he used. This is a VERY important point. Once the pipe system is under the floor slab there is little one can do to find and fix leaks. Twenty years ago a volunteer group, in our town, installed an underfloor refrigeration system for the local youth hockey program. They used black iron pipe. The system worked fine - for a few years, but now there are so many leaks that they can't find, the system is nearly unusable. Just a little horror story I thought I would share - in hopes that you will avoid the problem.
Don't forget that soil conditions can also affect the piping performance.
RE: Help- Costs for Water heat under concrete
Zambo
RE: Help- Costs for Water heat under concrete
RE: Help- Costs for Water heat under concrete
RE: Help- Costs for Water heat under concrete
RE: Help- Costs for Water heat under concrete
aspearin1
RE: Help- Costs for Water heat under concrete
RE: Help- Costs for Water heat under concrete
You will usually overshoot the set point, especially if the outside temperature is rising. (Typical spring and fall weather).
You might want to set the hot water heat to a slightly lower set point than you want the area to be heated and then install small capacity trim heating systems.
Again a good HVAC engineer will know all this and most likely have some additional ideas.
Rick Kitson MBA P.Eng
Construction Project Management
From conception to completion
www.kitsonengineering.com