Maybe we're arguing over what is a reasonable assumption. Thought provoking...I am assuming the flow rate and shape of the throttle valve enables laminar flow of the refrigerant. What if I increase the flow by changing the motor speed or change the shape of the throttle both to transition to...
How about this...If I want to determine the efficiency of a gasoline piston engine in a car with square wheels should I test the car on a chassis dyno having the square wheels drive the absorber?? Cuze after all the square wheels are part of the engine, Oh, and maybe I'll turn on the air...
Let's try again...If I had an electric motor that is 100% efficient connected to a compressor that is 100% frictionless and the tubing, evaporator, and condenser were in 100% adiabatic enclosures, what % of the Watt meter could I use to determine the the cooling heating efficiency??
How about this... If I power the compressor making ice with a gas turbine engine supplying 400 MW, and my compressor uses 190W to make 140g of ice and and out of that 140g I'm supplying a vanishingly small amount of ice to 400000 homes, I should count 400MW in my evaluation of the refrigeration...
Ok, as far as parasitic losses, if I connect a toaster oven to the system because I enjoy toast with my ice, I should include that power in my evaluation of the heat pump/refrigeration cycle, and try to plot it??
Temperature Entropyhttp://files.engineering.com/getfile.aspx?folder=91b3e9ff-38a2-4b05-bc99-f026f6550c01&file=Temperature_Entropy_Diagram_Example_Data.doc
Here are my thoughts:
Qout Condenser (Hot)
Qout = Mass flow x Cp x Tin - Tout
Qin Evaporator (cold)
Qin = Mass flow x Cp x Tin - Tout
Refrigeration Cycle
Beta = Qin/Wcycle = Qin/Qout - Qin
Heat Pump Cycle
Gama = Qout/Wcycle = Qout/Qout-Qin
Initial assumption is that W is 40% of the Watt...
Is this the correct way to calculate the ideal and real COP of the evaporator (Beta) and max efficiency of a table top ice maker using the heat transfer method???
Description: 110V ac compression refrigeration ice machine using refrigerant 134a.
An electronic controller with display controls...
