Questions tagged [thermodynamics]
Questions relating to the various laws of thermodynamics, transformation or movement of a form of energy to another form, primarily but not limited to heating or cooling of a fluid.
723 questions
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How can I define a key performance indicator to determine if a heat exchanger is fouled or not?
I’m analyzing historical performance data for a plate heat exchanger (counterflow) where one side uses lake water as the cooling medium, the warmer side is water. From maintenance records, I know the ...
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-1 votes
2 answers
71 views
Atmospheric Water generator system:" A different approach
This is my first question in stack exchange. This is a project which i am working with my friends. We are trying to build an AWG system by utilising Peltier coolers to cool an incoming pipe. So ...
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0 votes
2 answers
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Can the Cheerios effect be used for transportation
I conducted an experiment, taking one relatively lighter rectangular block and a relatively heavier rectangular block. Their parameters were same except length, about 1cm length, 50mm height and width ...
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0 votes
1 answer
38 views
Calculating the sensible effectiveness of a two-fan reciprocating heat exchanger
Hİ, I’m developing a small ventilation unit with a ceramic regenerative core and want to test it and validate the sensible effectiveness calculation. The unit runs a 10-minute cycle in two sequential ...
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0 votes
1 answer
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Process of building a turbojet
I want to make a turbojet but before the 3D design I have to get the calculations and I am having problems with compressor-turbine matching. My design for some context: single stage centrifugal ...
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0 votes
1 answer
38 views
How to build a setup to observe and plot the PVT curves of CO2 (or Oxygen) gas?
I’m working on building a simple experimental setup to study CO₂ under different conditions of pressure, volume, and temperature, to plot PVT curves. Right now, I’m exploring designs like a piston–...
0 votes
1 answer
28 views
$pT$ diagram liquid-gas curve vs the Mollier $\phi = 1$ curve
Is the gas/liquid curve (blue in the left picture) in the $p$–$T$ diagram (left): the same curve as the $\phi = 1$ curve (bold, lowest curve, right) in the ...
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0 votes
1 answer
57 views
Determining the mass flow of condensed water from cooling of flue gases after combustion
I am analyzing the condensation of water from flue gases in a combustion process. I want to know the amount of moisture that will condensate (in $\frac{l}{h}$) when the flue gasses cool at some ...
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1 vote
1 answer
122 views
Peltier dehumidifier connected via tubing to a small enclosure - fan type and size?
I'm trying to make a small 25 liter box with humidity control. I figured a TEC based dehumidifier would be adequately sized and I had some promising initial results some two years ago with a janky ...
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0 votes
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53 views
Thermodynamics in a tent: how do I model ventilated air moving in the space between inner tent and outer tent
I am working on modeling the thermodynamics of a ventilated tent. The tent is a 3D drawing in Grasshopper/Rhino CAD environment. I use the Honeybee software to link the Grasshopper/Rhino CAD ...
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34 views
Film Coefficient
I am conducting a research study about the comparison between the two different boards enclosed in a chamber exposed outside for 3 days. I have measured the temperature of the board and temperature ...
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0 votes
2 answers
67 views
Comfort cooling in Commercial buildings
Can adiabatic expansion of air be used for comfort cooling in large buildings? To replace or supplement chlorofluorocarbon refrigerants? The objective is to reduce the carbon footprint, without an ...
0 votes
0 answers
37 views
Convective Heat Flux
I am conducting a research study about the comparison between the two different boards enclosed in a chamber exposed outside for 3 days. I have measured the temperature of the board and temperature ...
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0 votes
2 answers
79 views
Mass Flow Rate of Cold Water Pump in a Heat Exchanger, I think my study material is incorrect?
I am currently doing an assessment, and I believe the study material I have been given by the training collage may be wrong. Obviously, i need a second opinion and struggling to find a good example ...
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0 votes
1 answer
106 views
Need advice on building a Galileo Thermometer
I’d love to build a Galileo thermometer, but I haven’t been able to find any detailed information on how to make one. So, I created my own design for the project. However, I have some uncertainties ...
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