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Natural Refrigeration
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<blockquote data-quote="Bernard" data-source="post: 29745" data-attributes="member: 639"><p><strong>Re: Natural Refrigeration</strong></p><p></p><p>I think a case of lateral thinking always works...if you used the Bar-b-q to draw air through your system then I think you are well on your way to creating a blast furnace rather than a bar-b-q. Laterally thinking..not quite literally would be to build a chimney above it and feed the air into the chimney.</p><p></p><p>Again in a house situation then you would have the pipes in one end of the house and the chimney at the other. Prefrably with a opening into it in at the highest point of the house. Whether you used a fan or thermal heating at a higher point does not matter. What you are looking for is a potential difference in air pressure, that is why chimneys work the air is less dense at higher levels and therefore less pressure. I think that was the way I read it in a physics book. (Please correct me if I am wrong)</p><p></p><p>Living in a colder climate I have thought about just building something like a conservatory on the front of the house and painting the wall black and using it as a heat store either to warm the air in winter or use it for chimney effect in summer. It would mean altering the air flow in some way between summer and winter.</p><p></p><p>Another possibility to think about is that you are using energy to warm the air in the house in the winter and this would go straight up such a chimney and be wasted. It is also possible to recover this heat and using it to warm the incomming air. It is much like an air conditioning or refrigerator unit working in reverse. You would put hot air in where it was cold and warm air out where is hot.</p><p></p><p>The problem here is that you need to remember that doing this to a fridge would probably cause to much pressure differential and hence something giving....but there are comercial units out there.</p><p></p><p>Just some thoughts...i have a few other ideas up my sleave ...I only hope that I can put them into practice.</p><p></p><p>Bernard</p></blockquote><p></p>
[QUOTE="Bernard, post: 29745, member: 639"] [b]Re: Natural Refrigeration[/b] I think a case of lateral thinking always works...if you used the Bar-b-q to draw air through your system then I think you are well on your way to creating a blast furnace rather than a bar-b-q. Laterally thinking..not quite literally would be to build a chimney above it and feed the air into the chimney. Again in a house situation then you would have the pipes in one end of the house and the chimney at the other. Prefrably with a opening into it in at the highest point of the house. Whether you used a fan or thermal heating at a higher point does not matter. What you are looking for is a potential difference in air pressure, that is why chimneys work the air is less dense at higher levels and therefore less pressure. I think that was the way I read it in a physics book. (Please correct me if I am wrong) Living in a colder climate I have thought about just building something like a conservatory on the front of the house and painting the wall black and using it as a heat store either to warm the air in winter or use it for chimney effect in summer. It would mean altering the air flow in some way between summer and winter. Another possibility to think about is that you are using energy to warm the air in the house in the winter and this would go straight up such a chimney and be wasted. It is also possible to recover this heat and using it to warm the incomming air. It is much like an air conditioning or refrigerator unit working in reverse. You would put hot air in where it was cold and warm air out where is hot. The problem here is that you need to remember that doing this to a fridge would probably cause to much pressure differential and hence something giving....but there are comercial units out there. Just some thoughts...i have a few other ideas up my sleave ...I only hope that I can put them into practice. Bernard [/QUOTE]
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