Recent content by Andrea Vironda

Thanks, it helped me a lot

I would be interested in calculating the constraint reactions on the 6 pads in yellow in the figure, about 300mm apart among them and loaded with F=12500 kN in blue. Since the system is highly hyperstatic, I don't know how to calculate the constraints. Can you give me a hand? I've made a FEM...

In post #16 there's a word, "here", that is in blue. Clic on it, it's stored on OneDrive. I put comments on all the variables i used

You can Open the link and have a look 👍

Ok got, i created a model here, but I notice the starting rate would be -1.1 °C/s, too many in my opinion. I think C or U must be revised.

I have the second edition (2002). I can see in §10.9 FREE CONVECTION the theory, but I can't find the tables. Also appendix E is mute

What is MC? and how to deal with U? around 1E-2 W/(m2·K) I think it's suitable. In this case I would have dT/dt=-0.004 °/s

How can I estimate U and C? For U I think I have to use the resistance equivalent with thermal conductivity of the glass wall (W/(m·K)) and convection heat transfer coefficient (W/(m2·K)) For C can I assume 2.5 kj/kg/K ?

I know ##\Delta=Q-W##. Here the work done is 0. ##Q## is function of external temperature, wine temperature, the bottle shape and the thickness of glass. Of course the substances are also important (maybe I can consider wine as water, as Jesus did). I can use conduction Heat Transfer formula to...

Good morning sirs, I have a standard bottle of wine made by glass, 0.75l. I suppose it's 20deg and I'd like to know how much time I need to lower the temperature of 4deg, considering outside it's winter, no wind, simple convection. I read some theory and I discovered some reference to Nusselt...

I think there's a limit below which living becomes unhealthy. I could control it with a thermometer and a hygrometer. 18C–21C is the comfort zone, i think below 18C is better not to go

I have a lodging in a block of 4. Mine is in the lower floor. exposed to east in the living side and to north in the night side. The average italian consumption is 4% more than minee, but since I'm single and I work/run for the most of the day, my consumption is very high. A family living in...

Good morning, I have a 90 mq house burning 1200 smc of methane every year. I live alone and i keep 20°C when I'm at home (evenings) and 18.5°C when I'm not. My window frames are quite old, and I don't know very well if it's the case to spend 8 monthly payments to update my hardware. What is...

This is the link I used for the screenshot

ahahaha, yes for example. But why does freezing should cause that weird shape?