Greenhouse heating idea-hoping for feedback
diana63
22 years ago
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22 years agoRelated Discussions
Heating Greenhouse w/ Hot Tub Heat??
Comments (24)I still think the only way this would work (aside from having the hot tub in the green house, would be to capture lost heat. Now my hot tub is very well insulated, especialy above the tub. My hot tub is a self contained tub, the heater is contained in the tub enclosure. But I think this method would work even better with an inground hot tub. Idealy, if the hot tub is not installed yet, you could build an inground hot tub (the heater is seperate with an inground hot tub). Install the just the heater inside the greenhouse. Otherwise, the place I have found the most Waste heat with my Tub, is above the heater. So hputting some sort of heat exchanger above the heater to capture the heat lost from the heater would work very well....See MoreNew Solar greenhouse idea
Comments (3)If the straw bales are "insulated with plaster" for some reason, wouldn't that also insulate them from heat gain in the daytime? If you are planning to store enough heat during the day using water, the recommended amount needed for adequate heating of a greenhouse at night is 4 gallons per sq. ft. For your 1500 sq. ft, that would be 6000 gal. There are many in-use greenhouses and homes that use subterranian heat storage for at least partial night-time heating. Full sun, winter days, with the recommended amount of water storage are usually necessary to achieve the goals. Additional considerations are getting the heated water from the greenhouse into the storage barrels during the day and out at night....See Moregreenhouse heat
Comments (14)Thank you for all the feedback. This is great. Back up plan...we haven't lost power since we've been here but this winter could be it. I have a propane heater I can use as long as I'm careful. It doesn't have a thermostat so it couldn't be left on. We own a small window treatment business, part of Blind Brokers Network. We're in VA near Virginia Tech (Blacksburg). There are BBN dealers throughout the country. When shutters are packed they usually are packed in 1" styrofoam. Blinds and shades are usually packed in bubblewrap. A typical house can produce a truckload of bubblewrap, styrofoam and of course corrugated cardboard. Most dealers just throw it away. Not worth the trouble of sorting and keeping. We just hate to see the landfill filled up with re-useable stuff. Check your yellow pages for small independent dealers (we're independent but sell Hunter Douglas and Norman International mostly). Someone out there would probably gladly have you pick it up at the jobsite rather than have to haul it away. As for my tomatoes, I think the tomatoes already on the vines will ripen ok but I'm thinking that light, heat and pollination are going to keep me from having tomatoes into the deep winter. I think I'll go ahead and wrap the entire inside with bubble wrap and also do some white to reflect as some suggested. Maybe my grow lights will help some. If my tomato plan fails I have plenty of stuff I'm making room inside the house for that can go in there till later in the season when seed starting starts. Thanks again....See MoreHeating a greenhouse with exhaust from H20 heater, etc.
Comments (11)I have a better idea. You can't restrict the vent in any way or you may get CO in your house. But instead of venting the CO into the greenhouse, what you can do, in a safer way, is to put a small air source heat pump right next to the vent. The hot waste air that comes out of the vent will heat the heat pump, and the heat pump will "move" the heat into the greenhouse. This way is more expensive(you get higher electricity bill), but much safer. You are not restricting the vent in any way. In a cold climate, the heat pump usually doesn't work so well, because it needs to run defrost cycles quite often. HOwever if you have this vent blowing into the heat pump, there's no need to run the defrost cycles because the hot waste air will do the defrosting for you. A lot of the heat will get transfered into the greenhouse by the heat pump. The greenhouse will not have that toxic CO either(it's all vented naturally to the outside)....See Morebigfoot_liz
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