Evaporator machine but in the operations manual

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SUMMARY

The discussion centers on the equation for evaporation used in evaporator machines, specifically Q = U x A x DT, where Q represents energy transfer in watts, U is the heat transfer coefficient in watts per square meter per Kelvin, A is the heat transfer area in square meters, and DT is the temperature difference in Kelvin. Participants clarify that this equation defines the relationship between energy transfer rate, surface area, and temperature gradient, emphasizing that U is an empirical coefficient derived from experimental data. Understanding this equation is crucial for optimizing the performance of evaporator machines.

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TonyB
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Hello,

Could someone please give me an explanation using the following equation?

I work this evaporator machine but in the operations manual there is this equation below.I would like to further my knowledge.

Equation for Evaporation
Q = U x A x DT

Q = Energy Transfer (W)
U = Heat Transfer coefficient (W/m2°K)
A = Heat Transfer area (m2)
DT = Temperature difference (°K)

Please any help appreciated...thank you...Tony
 
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The equation is a relationship between the energy transfer rate (power), the surface area, and the mean temperature gradient at that surface. It more or less is used to define the heat transfer coefficient.

Q = U x A x DT or

U = Q/(A*DT)

U is an empirical correlation or coefficient.
 

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