Nov 22, 2012 · For a heat transfer formula you will need to equal both formulas as Foxstar mentioned, but with a specific example maybe we can give you an idea how to do it. NOTE: …

Jun 19, 2023 · Qdot is rate heat transfer (Watts). c p is specific heat capacity of fluid (kJ/kg C), water in this case. ρ is fluid density (kg/m^3). ΔT is temperture difference (°C). Vdot is volume …

May 17, 2012 · the U (overall heat transfer coefficient) can be written in a function of one of the fluidums mass rate when I keep the other fluidum's mass rate constant: so U (mass rate …

Oct 29, 2010 · Your derivation is correct. q''' (triple prime) is the volumetric heat generation rate (W/m^3). If you are thinking of heat generation in a wire (due to current passing through), this …

Aug 20, 2002 · the formula you are writing is the formula stated in the TEMA stds for overall heat transfer coefficient. the overall heat transfer coeff is calculated (per the stds) at the outside of …

Jan 9, 2007 · In the text books of heat transfer, the calculation of the heat rate loss is usually given by the formula for conduction mode transfer through a semi infinite solid.

Nov 25, 2017 · Depends on what you mean by "heat transfer efficiency." It could mean, "heat transferred per unit time," which is maximized by the flow rate It could mean, "heat transferred …

May 12, 2005 · I hope Christine74 understood that in formula (1) [Δ]T refers to both sides of the heat exchanger, as the driving force for heat transfer. In formula (2) better written [Δ]t, in small …

Jun 1, 2005 · In this case the formula measures the sensible heat lost by the warm "moving" side where one can measure the flow rate, and, under equilibrium conditions as above, this fluid …

Jul 22, 2025 · So if you decrease water temperature you will increase heat transfer rate but in the end the heat transferred to the water from the air equals the same heat that goes into raising …