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Paul Anilprem wrote:
This question popped because I was thinking of chopping off a big oak tree that shades the house equally during winter and summer. Without doing any calculations, I am guessing that heating is cheaper than cooling (assuming that both the operations are run off electricity) and so it is better to have shade in summer as well as winter rather than not have the shade in either season.
Maneesh Godbole wrote:You cannot generate cold. All you can do is take away the heat.
Thinking logically heating a certain area from x->y would be the same as cooling from y->x. In reality this would depend on the efficiency of the apparatus being used (e.g. heater and ac).
To the surprise of many, air conditioners are more energy efficient than furnaces or boilers. Another way of stating this is that it takes less energy to cool down an interior space by one degree than to heat it up by one degree. This is the case, because (in layman's terms) it takes less energy to transfer heat (air conditioners) than to generate heat (furnaces and boilers).
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Maneesh Godbole wrote:
Paul Anilprem wrote:
This question popped because I was thinking of chopping off a big oak tree that shades the house equally during winter and summer. Without doing any calculations, I am guessing that heating is cheaper than cooling (assuming that both the operations are run off electricity) and so it is better to have shade in summer as well as winter rather than not have the shade in either season.
Instead of such drastic measures, have you considered some reflector kind of option mounted on the same tree which would sort of reflect the sunlight into your room during winter? If nothing else, you would save a tree and so many life forms dependent on it. Also it will be fun to figure out the optimal orientation for the reflectors. Yeah it should be 23.5 degrees, but in which direction
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Jayesh A Lalwani wrote:
Remember that the tree is not cooling your house. Your house is cooling itself by either leaking warm air or basic radiation of heat.
Without knowing the specifics, and depending on your latitude, I am guessing that the sun will heat up your house a hell of lot more efficiently than the house will cool itself. Unless you have really bad windows. Also, taking away a large tree is going to be a much larger initial investment than upgrading your windows.
Save the tree. Just get better windows.
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Paul Anilprem wrote:
Mounting something on top of a tree? Do you realize the risks you will be taking by doing that? No, thank you.
Maneesh Godbole wrote:
Paul Anilprem wrote:
Mounting something on top of a tree? Do you realize the risks you will be taking by doing that? No, thank you.
Huh? Risks? What kind?
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Maneesh Godbole wrote:I would have assumed if you can cut the tree, thats inside your property. If someone gets hurt, they would be trespassing. Or am I misunderstanding something here.
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Paul Anilprem wrote:
Jayesh A Lalwani wrote:
Remember that the tree is not cooling your house. Your house is cooling itself by either leaking warm air or basic radiation of heat.
Well, the tree is indeed cooling the house because of two factors - 1. Not letting the sun heat up the house and 2. By keeping the temperature under it lower because of evaporation effect of the leaves . Of course, in winter there are no leaves but the shade is still there (not as much as in summer though).
Without knowing the specifics, and depending on your latitude, I am guessing that the sun will heat up your house a hell of lot more efficiently than the house will cool itself. Unless you have really bad windows. Also, taking away a large tree is going to be a much larger initial investment than upgrading your windows.
Save the tree. Just get better windows.
Assume good windows already in place and ignore the cost of removing the tree. Now?
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There are only two hard things in computer science: cache invalidation, naming things, and off-by-one errors
Paul Anilprem wrote:Thank you for the detailed analysis, Jayesh. It looks very logical. The tree stays
SCJP, SCWCD.
|Asking Good Questions|
To the surprise of many, air conditioners are more energy efficient than furnaces or boilers. Another way of stating this is that it takes less energy to cool down an interior space by one degree than to heat it up by one degree. This is the case, because (in layman's terms) it takes less energy to transfer heat (air conditioners) than to generate heat (furnaces and boilers).
Oh, sure, you could do that. Or you could eat some pie. While reading this tiny ad:
a bit of art, as a gift, that will fit in a stocking
https://gardener-gift.com
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