Recent content by sromag

Yes totally... I took that into consideration in my calculations.. Feel free to check. It's not impossible that I made a mistake in my numbers. The conductivity shouldn't be a massive issue if what it touches is a very bad heat conductor such as wood.

This is really fab. Thanks for the replies. It has made me understand some things I didn't before and think of new things. I have taken the point on board that ovens work by radiating heat from the walls. Metal walls can be used to radiate the heat... Metals seem to have a pretty low specific...

Thanks for the responses: I was responding to where you said that heating air is not usually an issue, heating everything else is. I also agree with your swimming pool analogy. I'm just following the maths as to how to heat up a 1 m^3 space. The actual space used will eventually be...

Thank you for the reply. Thing is... if you heat up the air and continue heating up the air, surely the contents will heat up also wouldn't they? But surely... if the power is constant, (using a thermometer and a cut off switch of some kind, to keep the temperature at 50-55 degrees) objects in...

Hello I am trying to put together a system - think of it as a mini oven that reaches temperatures of no higher than about 75-80 degrees C but normally up to about 50 degrees. Initially, I'm trying to find out what power would be required to warm a space up to that temperature. I started...

There are a few equations in mechanics that are linear and deal with constant acceleration. V = u + at is one of them Where U is initial velocity V is final velocity a is acceleration t is time If you rearrange the formula, you can work out the time taken.

Thanks for that. I'm away for a couple of days now. I'll take a proper look when I get back. Apt a glance, I didn't notice anything about working out the power in watts, but I'll take a better look when I get back. Appreciated :)

And quite coincidentally Haruspex, I'm very much into renewable energy too. :)

Thanks for the reply. As for time period, say 10 minutes - 600 seconds. And as I say, I'm not sure about the 0.005 watts answer. You're right, it seems a little incomplete.

Hello, Technically, this is not homework but I thought it might be more appropriate here as it is a homework type question but it is for practical use. If the moderator thinks it should go somewhere else, then please move it to wherever you think is more appropriate. I've not found the...