# Search results

1. ### Filling a tank with steam

a) For the first question the answer is 1m^3 steam at 250 degree celcious and 20 Kpa pressure. b) For the second question, the problem is not standard, it's need volume flow rate also, if the volume flow rate sufficient enough to provide sufficient time for thermal equillibrium too, then the...
2. ### Optimization/Pareto Efficient

The domain of the x is 3<=x<=4; In the Domain of x, the value of u*_B= -(2*3)+7 = 1; [As u*_B= max value of u_B(x)] In the same way, the value of u*_G= (3*4)-10.5 = 1.5. Now find out function |u_B(x)-u*_b| and |u_G(x)-u*_G| in the domain of interest, i.e, 3.5<=x<=4 So, in the doamin of...
3. ### Mass participation factor and it's role in modal anlysis

Thank you for your response. For me, my compressor frequency is very low(in the range of 47 to 48) and we always avoid the range from [0-compressor frequency+0.1*compressor frequency]. I don't have any doubt in that. But we are also look for higher frequencies (upto six modes) if that...
4. ### Mass participation factor and it's role in modal anlysis

When we are doing modal analysis, how many mode should we extract? For complex piping system with thicker wall and less diameter the no of modes to be consider is a difficult task. How can I define upto how many modes should I evaluate for the modal results and check it with external excitation...
5. ### For modal analysis of tubing is it needed the inside refrigerant to be considered.

For doing modal analysis of suction and discharge side of an air-conditioning unit, is it needed to consider the inside refrigerant?
6. ### New Idea for Air-conditioning

BobbyWhy@ Thanks for your response, but for your clarification, I am not asking for any patent but any new idea that is already patented, but industries are not feeling comfortable to use these as it may not be so productive or much more investigation needed on these. Anyway, People using...
7. ### New Idea for Air-conditioning

Any new IDEA anyone have in your mind can post over here. Whatever be it will be appreciated and if I got something really new, it will be very helpful for me. Any response will be highly appreciated...
8. ### Water cooling system help! Lots of things! Calculations and everything!

As chiller system will be lot's of complication and costly also, so go for simple cooling tower which will transfer the extra heat to atmosphere by using latent heat of evaporation of water. Anyway I don't know what is the ambient temperature and humidity of your surroundings and how much...
9. ### Modal Frequency of a System having more than two components.

Mech_Engineer@ Thanks for your response. I know commercial software like ANSYS or other you specify do calculate the natural frequency of a total assembly, but What I am looking for is how can you co-relate the natural frequency of several components with the natural frequency of total...
10. ### Modal Frequency of a System having more than two components.

I am looking for an efficient procedure to find the natural frequency of a system comprising more than two components. Like I have an assembly of system comprising compressor, condenser, piping, fan, fan bracket, and frame. I have all the designs and dimensions of the total model. How can I find...
11. ### Cooling Air Fluids/Thermo Help

Wherever you want to remove heat you must have some temperature difference. Simply passing the air through a copper coil would not serve your purpose. You have to pass some cold fluid to achieve the cooling process otherwise you can use water and a combination of fan to cool the air by using...
12. ### Water cooling system help! Lots of things! Calculations and everything!

I think what you are looking for that's exactly a CHILLER system, (like used in central airconditioning). It's not a big deal. Go and search for a water chiller system you will automatically foigure out it. But as the water gets heat up, you can also use vapor absorption cycle. It will be well...