kartik
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Posts posted by kartik
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21 hours ago, Bufofrog said:
Just a couple of questions, approximately what is this certain hold temperature and do you care about the heat up and cool down rate?
1.5 degree above the ambient temperature should be the temperature in the chamber at any given time with an error pf +- 5%.
since its a small box..if the temperature reaches the target value under a min, that woud be ideal. Please suggest a way.
Thankyou.
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On 2/15/2020 at 8:17 PM, Bufofrog said:
Is this going somewhere? If so could you ask the final question so we can move along, or are just wondering about energy and heat transfer?
I need to maintain the temperature in a small 1x1x1 ft chamber filled with just air at a certain value above the surrounding temperature of that chamber. what would be a suitable heating element and the insulating material for the chamber? how can i maintain a constant temperature? what are the factors i need to keep in mind for designing this chamber?
This is the final problem you were asking about.
thankyou!
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8 hours ago, Bufofrog said:
Assuming the box contains air and dimensions are the inside dimensions and ignoring losses the approximate energy required is...
Cv * Mass * temp = energy required
0.718 Kj/Kg-K * .034 kg * 1C = 0.024 kj or 0.00666 Wh
unless i made a math error
okay, now how do we calculate the time required for this temperature rise if a constant energy of 0.024kj is produced?
thankyou.
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I have a 1x1x1 feet box. I have a heating source in the box which produces "x" watts. How long will it take to increase the temperature of the box by 1 deg C?
thankyou.
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heat transfer
in Homework Help
Posted
Thanks for your answer. Couple of questions though:
1. injecting heat into the system is easy. but if i have to somehow bring the temperature down, wont i need vents to do that? ( in scenarios where ambient temperature drops down drastically)
2. can i use nichrome wire as the heating element?