Recent content by baracoda

Guys thank you very much for all your help!

Oh ok, I see the point. Ok, I found some U-values and calculated that for my room Power (W) = 270 * (temp_inside - temp_outside), so for 20C inside and 5C outside it is 4050W. How can I go from 4050W to the W/K unit? Or is it already 4050W/J?I have went through Newtons Law of Cooling and I...

@russ_watters that is great! Thank you once again. I am studying it know and trying to understand and apply it to more real life example. I have found an information that for 30m2 room with 200kg of furnitures thermal capacity is more or less 10^7 J/K so I have to find appropriate room K...

@russ_watters thank you very much for this example, it is much more clear to me than those complcated equations. Using ths method I can adjust the data as I want and also use it to predict how the temperature will drop if I will turn the heater off (I will have to look at the plot the other way...

I didn't realized that it is so problematic. Well, I think I will have to give up as there is no even very simplified way to deal with it. Anyway, thank you guys for your time.

I see... there are many factors that influence the result... You mean, that using the solution you have proposed in the first post would be the best idea? If yes can you please advise me how many Wats approximately the radiator should have to be near to realistic solution? And is there also...

If I understand correctly, those changes I am trying to calculate are more or less right in situation: it is very cold in the room, I am switching on the radiator, and after one hour the temperature is x. Then those changes are not so big, and the other things in the room, together with walls...

No it is just an excercise. I am a programmer and I do not know physics. I am trying to figure out how to calculate how temperature will change in room during the hour (or other time span) and I want to skip the advanced parts of this problem, the easier for me to understand the better :) Oh...

Thank you guys for the responses! What do you think of the following way of thinking: 1. I can calculate the amount of energy necessary to heat up the air: W=mc_{air}\Delta T mass of the air enclosed in the room: m=\rho V m=6*6*3*1.2=216\left [ kg \right ] specific heat capacity...

Hello, having the following data can I somehow calculate how will the temperature in room change in 1 hour time? room length = 6m room width = 6m room height = 3m lets say radiator is 0.5m x 1.5m and has 2000W and it can be in 2 states: on/off I have also the current air temperature and...