Commercial Greenhouse Heating

Robert O'Connor_8

They have them for commercial pools. I am just wondering about corrosive element airborne from fertilizers etc in the green house. I am gonna get an air test done to find out what is airborne.

This is a 12000 ft green house and the guy is burning gas like he's sitting on a well in Houston.

The radian system failed within two week of commision

Robert O'Connor_8

Greenhouses

I am working on a commercial greenhouse and am looking for help.

Does anyone have experience with HRV's in a greenhouse environment.

Also need to deliver specific heat to the flower tops . I'd like to find something like staple up plates with tube in it that could be raised as the plants grow.

All the best

Robert

Josh_10

Check out my ad in find a pro. I used Star Fin heat pipe. It is good stuff. It goes up really fast. As for the HRV I have no idea how it would work in that environment.

To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"

Brad White_104

I was going to suggest you, Josh...

Forget Orkin Man- Call Orchid Man!

Josh_10

Thanks for the endorsement Brad! I was going to suggest you as well.. I found it interesting when I began working on greenhouses that there was no staticstics to use as a guide or guys that "just know what to do." I had to learn from the growers. They knew the temperatures, humidity, and proper CO2 levels. All I have to do is follow their guide.

The ERV is something that has me perplexed though. I have been thinking about that all day. My biggest concern is the humidity eating away at the unit.

P.S. Have you ever met an Orchid grower before? They are pretty excentric people! I like working for them strictly for entertainment (LOL). They are a little difficult to deal with though. I like difficult people though. When they say good job you know ya done good.

To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"

Robert O'Connor_8

They have them for commercial pools. I am just wondering about corrosive element airborne from fertilizers etc in the green house. I am gonna get an air test done to find out what is airborne.

This is a 12000 ft green house and the guy is burning gas like he's sitting on a well in Houston.

The radian system failed within two week of commision. I'll post some pics of the fix for the failed radiant later today!

I appreciate all comments and humour.

All the best

Robert

ME

Christian Egli_2

What about the boiler man

The Orchid man and the heat recuperation idea have been both rattling around my head since yesterday. When visiting a hot house, who's the grandest eccentric, the one gazing at the plants or the one gawking at the pipes?

Caught you!

Greenhouses are the ultimate solar panel, and thus their problem is not really how to keep warm but how to keep cool, to keep from overheating. The second enormous problem is the CO2 depletion. Both of these don't fit with energy recovery. Where would you store the massive amount of recuperated energy anyways?

I have visited many commercial greenhouses, yah, the boiler room and the cogeneration units, both in Europe and their transplants here in the US. Except for economizers on the boiler flue and engine exhaust, no ERV. If translations from the Dutch are ever needed, send me a message.

Unknown

what I did..

What I did at this job, one greenhouse attached to home with forced air, customer hate it, only the top half of house grow while all the space at bottom half used for storage... 2nd green house, free standing with copper commerical fin all the way around except the sliding door opening, they love it,can grow anything. I installed the boiler in the garage (with out loss of make up air, saving space, protected from chemicals,etc) underground supply and return runs along the pathway and door way to keep from icings up... I won't ask what the gas bill like. If you need the green house heat datas, I try to find it...

Robert O'Connor_8

Humidity

This greenhouse is producing tomatoes. Currently the louvers are opened and fans come on to change the air. Approximately once an hour.Controlled by a humidistat.

So i thought HRV would be the answer in the winter months . Design temp is -10

All comments much appreciated.

Robert

ME

Brad White_105

Burnham Heating Helper Publication

One thing I found is on page 52 of the on-line Burnham Heating Helper in PDF format. One page dedicated to greenhouse heat loss calculations- I mean, there are hundreds of applications besides houses and buildings... someone at Burnham saw fit to include... greenhouses...

Just found that interesting...