Heat Transfer: Crash Course Engineering #14
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Date: 2022-04-04
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Comments and reviews: 10
Z. reco_gamer
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tommy0773
So to battle the radiant heat put an reflective aluminum barrier on top of your existing insulation put a solar fan on your roof ( because we-re trying to save energy) to force ventilate and pull the heat out in the summer. Now insulation has a saturation point just like a sponge can only resist or absorb so much water, insulation can only resist or absorb so much heat before it becomes ineffective the saturation level is usually around 125degrees f so it seem that if I can add a reflective barrier on top of my insulation it would keep my insulation protected from radiant heat and my insulation would not reach its saturation point hmmmmm I feel a science experiment in my near future!
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So to battle the radiant heat put an reflective aluminum barrier on top of your existing insulation put a solar fan on your roof ( because we-re trying to save energy) to force ventilate and pull the heat out in the summer. Now insulation has a saturation point just like a sponge can only resist or absorb so much water, insulation can only resist or absorb so much heat before it becomes ineffective the saturation level is usually around 125degrees f so it seem that if I can add a reflective barrier on top of my insulation it would keep my insulation protected from radiant heat and my insulation would not reach its saturation point hmmmmm I feel a science experiment in my near future!
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Charlie
i actually live in cambodia and this is how i do it: two open windows with mosquito net and a fan blowing air between them. reverse according to which side of the house receives sun. im directly under flat roof which gets super hot from full sunlight so hot that just the radiant heat makes my desk hot while the air is not. and this is the only thing that keeps the room comfortable. the roof receives about 700 megajoules per day. when the heat is the worst i dump water buckets on the roof which evaporate quickly. one bucket reduces this by 40 megajoules. so 18 buckets eliminate the sunlight completely. a rack with wet clothes inside the room also helps obviously.
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i actually live in cambodia and this is how i do it: two open windows with mosquito net and a fan blowing air between them. reverse according to which side of the house receives sun. im directly under flat roof which gets super hot from full sunlight so hot that just the radiant heat makes my desk hot while the air is not. and this is the only thing that keeps the room comfortable. the roof receives about 700 megajoules per day. when the heat is the worst i dump water buckets on the roof which evaporate quickly. one bucket reduces this by 40 megajoules. so 18 buckets eliminate the sunlight completely. a rack with wet clothes inside the room also helps obviously.
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hedgehog3180
Plate heat exchangers are almost unbelievably efficient. A small one maybe 20x10x5 cm can easily heat up water from 10 c to 30 c at incredibly high flow rates. It can essentially ensure that a house will never run out of hotwater because it can produce it so quickly that you can get hot water for every appliance and the shower in a home. Having lived my entire life with one I was stunned at the concept of running out of hot water when I heard about it.
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Plate heat exchangers are almost unbelievably efficient. A small one maybe 20x10x5 cm can easily heat up water from 10 c to 30 c at incredibly high flow rates. It can essentially ensure that a house will never run out of hotwater because it can produce it so quickly that you can get hot water for every appliance and the shower in a home. Having lived my entire life with one I was stunned at the concept of running out of hot water when I heard about it.
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Debojit
What is heat radiation and is it like electromagnetic radiation? Heat can transfer in vacuum also but how? When anything is heated then its molecules vibrate rapidly but why anything that comes near that object also heats up? Is it something like electromagnetic radiation?
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What is heat radiation and is it like electromagnetic radiation? Heat can transfer in vacuum also but how? When anything is heated then its molecules vibrate rapidly but why anything that comes near that object also heats up? Is it something like electromagnetic radiation?
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Evan
Thank you for breaking it down for us. We have an RV and we are trying to help the small air conditioner during the summer. We cannot put more insulation on the inside but we can put something to block the direct sunlight from contacting the top of the RV
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Thank you for breaking it down for us. We have an RV and we are trying to help the small air conditioner during the summer. We cannot put more insulation on the inside but we can put something to block the direct sunlight from contacting the top of the RV
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Alpha
I typed grade 7 heat transfer and got this, i clicked on it as it was crash course after 5 mins i am like, wwwwwhhhhhhaaaaaa?
Bcos this was bout engineering and i am just at grade 7, anyway i really like crash course
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I typed grade 7 heat transfer and got this, i clicked on it as it was crash course after 5 mins i am like, wwwwwhhhhhhaaaaaa?
Bcos this was bout engineering and i am just at grade 7, anyway i really like crash course
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nick23900
I came here to see if this video could help me understand what the hell is going on in my heat transfer class. I did not expect to see such a beautiful lady. Where is she even from lol
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I came here to see if this video could help me understand what the hell is going on in my heat transfer class. I did not expect to see such a beautiful lady. Where is she even from lol
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Helen
Thank you for the nice, interesting pictures. I find that learning hard things is SO much more pleasant and less stressful (and so I learn better) when it's in bright, lively colour.
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Thank you for the nice, interesting pictures. I find that learning hard things is SO much more pleasant and less stressful (and so I learn better) when it's in bright, lively colour.
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Aly
The whole video, I was like, -Lady, you are a very beautiful person but you need to brush the back of your hair. - Smh but no hate just my opinion but you do you
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The whole video, I was like, -Lady, you are a very beautiful person but you need to brush the back of your hair. - Smh but no hate just my opinion but you do you
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