Cooling a Greenhouse - Aquaponics - Aquaponic Gardening2024-03-29T11:39:17Zhttps://aquaponicgardening.ning.com/forum/topics/cooling-a-greenhouse?groupUrl=greenhouses&feed=yes&xn_auth=noWe're in Arizona, and this ye…tag:aquaponicgardening.ning.com,2015-04-03:4778851:Comment:6020952015-04-03T22:02:04.864ZSheri Schmeckpeperhttps://aquaponicgardening.ning.com/profile/SheriSchmeckpeper
<p>We're in Arizona, and this year I'm trying to grow loofa as a shade screen instead, or in addition, to the regular ones we put up every summer.</p>
<p>Has anyone played around with icyballs? They were used in the early iceboxes and used hot water to cool the fridge. In the hot areas, solar heat could heat one ball, and the other could be placed in front of a fan, thus using the sun outside to cool the air inside without adding moisture.</p>
<p>We're in Arizona, and this year I'm trying to grow loofa as a shade screen instead, or in addition, to the regular ones we put up every summer.</p>
<p>Has anyone played around with icyballs? They were used in the early iceboxes and used hot water to cool the fridge. In the hot areas, solar heat could heat one ball, and the other could be placed in front of a fan, thus using the sun outside to cool the air inside without adding moisture.</p> I don't seem to see any refer…tag:aquaponicgardening.ning.com,2014-05-10:4778851:Comment:5625342014-05-10T21:11:13.756ZJim Fiskhttps://aquaponicgardening.ning.com/profile/JimFisk
<p>I don't seem to see any references to Penn & Cord on this thread so here it is: <span style="text-decoration: underline;"><strong><a href="http://www.pennandcordsgarden.com/greenhouses.html" target="_blank">Penn & Cord</a></strong></span></p>
<p>They design some of the best passive GHs around and are easily home built. Here is one of their beauties:</p>
<p><a href="http://storage.ning.com/topology/rest/1.0/file/get/2772255810?profile=original" target="_self"><img class="align-full" src="http://storage.ning.com/topology/rest/1.0/file/get/2772255810?profile=original" width="483"></img></a> They heat…</p>
<p>I don't seem to see any references to Penn & Cord on this thread so here it is: <span style="text-decoration: underline;"><strong><a href="http://www.pennandcordsgarden.com/greenhouses.html" target="_blank">Penn & Cord</a></strong></span></p>
<p>They design some of the best passive GHs around and are easily home built. Here is one of their beauties:</p>
<p><a target="_self" href="http://storage.ning.com/topology/rest/1.0/file/get/2772255810?profile=original"><img class="align-full" src="http://storage.ning.com/topology/rest/1.0/file/get/2772255810?profile=original" width="483"/></a>They heat and cool passively and could easily be changed a bit to accommodate an AP system. Personally I would just add the fish room on the back as in our design. A must see site if you are contemplating a GH and want to keep heating and cooling under control.</p> I've been building mine with…tag:aquaponicgardening.ning.com,2014-04-07:4778851:Comment:5570292014-04-07T03:01:56.799ZMark Hallhttps://aquaponicgardening.ning.com/profile/MarkHall
<p>I've been building mine with lots of thermal mass. Not dug into the ground, but thick walls and outsulation.</p>
<p>I'm in the Hill Country near Bandera and Utopia.</p>
<p>I've been building mine with lots of thermal mass. Not dug into the ground, but thick walls and outsulation.</p>
<p>I'm in the Hill Country near Bandera and Utopia.</p> I live in west central Texas…tag:aquaponicgardening.ning.com,2014-04-07:4778851:Comment:5570242014-04-07T00:57:19.538ZJohnson L Brownhttps://aquaponicgardening.ning.com/profile/JohnsonLBrown
<p>I live in west central Texas so I can sympathize with you on the heat issue. I am seriously considering going 4 to 6 feet below grade and only having a glazed roof showing above ground. the temperatures would be more moderate in my mind at that depth. I also was thinking of thinking of glazing the inside as well as the outside of the roof to make a space for heating and cooling. I seems that it would take a lot less effort to heat or cool that space rather than heat or cool the whole…</p>
<p>I live in west central Texas so I can sympathize with you on the heat issue. I am seriously considering going 4 to 6 feet below grade and only having a glazed roof showing above ground. the temperatures would be more moderate in my mind at that depth. I also was thinking of thinking of glazing the inside as well as the outside of the roof to make a space for heating and cooling. I seems that it would take a lot less effort to heat or cool that space rather than heat or cool the whole greenhouse. I am hoping that shade cloth and earthen walls would moderate the temperature to maybe something tolerable in the summer and in the winter just heat the space in the roof. Our freeze line is only about an inch so the earth walls might maintain a warm temperature in the winter. It's all working perfectly in my imagination but any thoughts on my reasoning would be welcomed.</p> Greenhouse will be 54' long b…tag:aquaponicgardening.ning.com,2013-09-23:4778851:Comment:5193812013-09-23T03:28:00.673ZPaul Westberghttps://aquaponicgardening.ning.com/profile/PaulWestberg
<p>Greenhouse will be 54' long by 15' wide. I really like the self opening solar windows but have not figured a way for that to work with the quanset style greenhouse that this will be. Actually the walls will be vertical to 5' and then curve over. The window idea may just work. Thanks. BTW, most of the structure will be metal; the rest PT lumber. It lasts well here. <br></br> <br></br> <cite>Mark Hall said:…</cite></p>
<p>Greenhouse will be 54' long by 15' wide. I really like the self opening solar windows but have not figured a way for that to work with the quanset style greenhouse that this will be. Actually the walls will be vertical to 5' and then curve over. The window idea may just work. Thanks. BTW, most of the structure will be metal; the rest PT lumber. It lasts well here. <br/> <br/> <cite>Mark Hall said:</cite></p>
<blockquote cite="http://community.theaquaponicsource.com/forum/topics/cooling-a-greenhouse?groupUrl=greenhouses&xg_source=activity#4778851Comment518448"><div><div class="xg_user_generated"><p>What size greenhouse? Consider having low windows on the south wall that open and close to regulate air flow. Seems like a cleaner design than rolling and unrolling material.Also high windows on the north. If you can stay away from wood in the design you should have a long lasting structure. Your temperatures in Vista are so mild that a passive house might work well. I agree with commercial heat for backup. <br/> <br/> <cite>Paul Westberg said:</cite></p>
<blockquote cite="http://community.theaquaponicsource.com/forum/topics/cooling-a-greenhouse?groupUrl=greenhouses&xg_source=activity#4778851Comment518330"><div><div class="xg_user_generated"><p>Ok, I like it. some new and some theoretical. I am building a greenhouse in Vista, CA that will face south with a east west orientation. Two reasons for this: 1) the lot pretty much dictates it 2) to capture the onshore/offshore winds that naturally occur this close to the ocean. Because we have pretty mild temps and electricity is relatively cheap I was planning on going with fans and a cooler as well as temperature activated vents to try and keep the temps in line. The south wall I am planning a roll up type curtain with a screened backing that will stay closed in winter but open in the warmer months. Heating I am still working on. As the system I am planning will be hybrid and have media beds I can't just heat the water and be safe. From my other greenhouse I learned that the cool air rushing into the media beds when they drain will significantly reduce temps. There must be some moderation of overall temps for success. Time constraints dictate that the heating system be automatic and self regulating so I'll probably end up with some sort of commercial heat system. Not wildly excited about the cost or the fact that all of these I've found are for much larger set ups than mine. C'est la guerre! Comments?? </p>
<p></p>
</div>
</div>
</blockquote>
</div>
</div>
</blockquote> What size greenhouse? Consi…tag:aquaponicgardening.ning.com,2013-09-18:4778851:Comment:5184482013-09-18T11:36:24.715ZMark Hallhttps://aquaponicgardening.ning.com/profile/MarkHall
<p>What size greenhouse? Consider having low windows on the south wall that open and close to regulate air flow. Seems like a cleaner design than rolling and unrolling material.Also high windows on the north. If you can stay away from wood in the design you should have a long lasting structure. Your temperatures in Vista are so mild that a passive house might work well. I agree with commercial heat for backup. <br></br> <br></br> <cite>Paul Westberg said:…</cite></p>
<p>What size greenhouse? Consider having low windows on the south wall that open and close to regulate air flow. Seems like a cleaner design than rolling and unrolling material.Also high windows on the north. If you can stay away from wood in the design you should have a long lasting structure. Your temperatures in Vista are so mild that a passive house might work well. I agree with commercial heat for backup. <br/> <br/> <cite>Paul Westberg said:</cite></p>
<blockquote cite="http://community.theaquaponicsource.com/forum/topics/cooling-a-greenhouse?groupUrl=greenhouses&xg_source=activity#4778851Comment518330"><div><div class="xg_user_generated"><p>Ok, I like it. some new and some theoretical. I am building a greenhouse in Vista, CA that will face south with a east west orientation. Two reasons for this: 1) the lot pretty much dictates it 2) to capture the onshore/offshore winds that naturally occur this close to the ocean. Because we have pretty mild temps and electricity is relatively cheap I was planning on going with fans and a cooler as well as temperature activated vents to try and keep the temps in line. The south wall I am planning a roll up type curtain with a screened backing that will stay closed in winter but open in the warmer months. Heating I am still working on. As the system I am planning will be hybrid and have media beds I can't just heat the water and be safe. From my other greenhouse I learned that the cool air rushing into the media beds when they drain will significantly reduce temps. There must be some moderation of overall temps for success. Time constraints dictate that the heating system be automatic and self regulating so I'll probably end up with some sort of commercial heat system. Not wildly excited about the cost or the fact that all of these I've found are for much larger set ups than mine. C'est la guerre! Comments?? </p>
<p></p>
</div>
</div>
</blockquote> Thank you Bob, great informat…tag:aquaponicgardening.ning.com,2013-09-18:4778851:Comment:5183362013-09-18T06:58:07.091ZAquaponik Beraterhttps://aquaponicgardening.ning.com/profile/AquaponikBerater
<p>Thank you Bob, great information :)<br></br> <br></br> <cite>Bob Campbell said:</cite></p>
<blockquote cite="http://community.theaquaponicsource.com/forum/topics/cooling-a-greenhouse?groupUrl=greenhouses&commentId=4778851%3AComment%3A518330&xg_source=msg_com_gr_forum#4778851Comment280459"><div><div class="xg_user_generated"><p>In the past I have flown by the seat of my pants, and the results were very disappointing, so I am making a serious attempt to learn about thermodynamics.</p>
<p>My…</p>
</div>
</div>
</blockquote>
<p>Thank you Bob, great information :)<br/> <br/> <cite>Bob Campbell said:</cite></p>
<blockquote cite="http://community.theaquaponicsource.com/forum/topics/cooling-a-greenhouse?groupUrl=greenhouses&commentId=4778851%3AComment%3A518330&xg_source=msg_com_gr_forum#4778851Comment280459"><div><div class="xg_user_generated"><p>In the past I have flown by the seat of my pants, and the results were very disappointing, so I am making a serious attempt to learn about thermodynamics.</p>
<p>My goal is to create a spread sheet that will offer a systematic approach, and all the calculations required in the design of a year round thermally balanced aquaponic green house system using solar to accomplish a minimal utility demand.</p>
<p>I have a pretty good math background, but thermodynamics are expressed in so many systems and units that it leaves a lot of room for error when attempting to cross verify the spread sheet formulas. The project still has a long way to go, and I am open to making this a collaborative effort if you find this interesting</p>
<p>My thermodynamic spread sheets are unfinished, but available from my blog.</p>
<p><a rel="nofollow" href="http://chicoaquaponic.blogspot.com/" target="_blank">chicoaquaponic</a></p>
<p><br/>Bob</p>
<p> </p>
</div>
</div>
</blockquote> Ok, I like it. some new and s…tag:aquaponicgardening.ning.com,2013-09-18:4778851:Comment:5183302013-09-18T06:39:41.153ZPaul Westberghttps://aquaponicgardening.ning.com/profile/PaulWestberg
<p>Ok, I like it. some new and some theoretical. I am building a greenhouse in Vista, CA that will face south with a east west orientation. Two reasons for this: 1) the lot pretty much dictates it 2) to capture the onshore/offshore winds that naturally occur this close to the ocean. Because we have pretty mild temps and electricity is relatively cheap I was planning on going with fans and a cooler as well as temperature activated vents to try and keep the temps in line. The south wall I am…</p>
<p>Ok, I like it. some new and some theoretical. I am building a greenhouse in Vista, CA that will face south with a east west orientation. Two reasons for this: 1) the lot pretty much dictates it 2) to capture the onshore/offshore winds that naturally occur this close to the ocean. Because we have pretty mild temps and electricity is relatively cheap I was planning on going with fans and a cooler as well as temperature activated vents to try and keep the temps in line. The south wall I am planning a roll up type curtain with a screened backing that will stay closed in winter but open in the warmer months. Heating I am still working on. As the system I am planning will be hybrid and have media beds I can't just heat the water and be safe. From my other greenhouse I learned that the cool air rushing into the media beds when they drain will significantly reduce temps. There must be some moderation of overall temps for success. Time constraints dictate that the heating system be automatic and self regulating so I'll probably end up with some sort of commercial heat system. Not wildly excited about the cost or the fact that all of these I've found are for much larger set ups than mine. C'est la guerre! Comments?? </p>
<p></p> We are in Austria and looki…tag:aquaponicgardening.ning.com,2013-09-18:4778851:Comment:5185092013-09-18T06:09:34.600ZAquaponik Beraterhttps://aquaponicgardening.ning.com/profile/AquaponikBerater
<p> We are in Austria and looking for solar mass information to heat in winter....any ideas ?</p>
<p></p>
<p>Building a pit greenhouse and double glas insulation. </p>
<p> We are in Austria and looking for solar mass information to heat in winter....any ideas ?</p>
<p></p>
<p>Building a pit greenhouse and double glas insulation. </p> Probably the passive mass is…tag:aquaponicgardening.ning.com,2013-08-04:4778851:Comment:5010222013-08-04T02:45:21.640ZMark Hallhttps://aquaponicgardening.ning.com/profile/MarkHall
<p>Probably the passive mass is the most practical. Making beds out of high density materials. Lots of water and perhaps phase change materials.</p>
<p>Transpiration cooling by trees can reduce temps by 5 degrees C. according to TED. I have an idea to pipe air from under the big trees into my greenhouse to cool it. </p>
<p>Probably the passive mass is the most practical. Making beds out of high density materials. Lots of water and perhaps phase change materials.</p>
<p>Transpiration cooling by trees can reduce temps by 5 degrees C. according to TED. I have an idea to pipe air from under the big trees into my greenhouse to cool it. </p>