How do you find the temperature of a cable?
Maximum operating temperature of the cable. R20 = 0.443e-3; % ohm/m. Resistance of the cable at 20 °C. X = 0.099e-3; % ohm/m.
How do you calculate surface heat flow?
Measure cold temperature (such as that of a working fluid), Tcold. Remove units of area, A, to get heat flux, Q”. Divide Q by the area, A, you used to solve for Q since Q” = Q/A. For example, the heat flux Q” in the step above is 882,450 Watts/1m^2 = 882,450 Watts/m^2.
On what two factors does the heat capacity of an object depend?
This quantity is known as the specific heat capacity (or simply, the specific heat), which is the heat capacity per unit mass of a material. Experiments show that the transferred heat depends on three factors: (1) The change in temperature, (2) the mass of the system, and (3) the substance and phase of the substance.
What is heat flux How is it related to the heat transfer rate?
Heat flux is the amount of heat transferred per unit area per unit time to or from a surface. Basically, it is a derived quantity since it involves the principle of two quantities viz. the amount of heat transfer per unit time and the area to or from which the heat transfer occurs.
What units are used to measure heat flow?
Heat flow is measured in one of two common units: the calorie and the joule. The joule (J) is the SI unit of energy.
How to calculate surface temperature and heat transfer?
I have the temperature on one side (Ts,1=800F) ,and am trying to find the temperature on the other side (Ts,2=?). The material is 304SS with a convective heat transfer coefficient of 21.4W/mK @500C (i found this number online, please correct me if its not accurate).
How to find the heat transfer coefficient in copper?
I think it boils down to finding the heat transfer coefficient between the copper and the air stream – but this depends on the temperature difference, which changes as the air is heated up. where ρ is the flow density, v is the velocity, D is the hydraulic diameter of the tube and μ is the dynamic viscosity.
How to calculate temperature of power cable conductor?
Applying the mathematics model of heat network, this paper propose a method to calculate conductor temperature from temperature of cable outer sheath, the structure and laying conditions of power cable should be given certainly. Factors that may have effect on the result calculated were also discussed.
How to calculate the resulting temperature for a stream of air through a hot tube?
How to calculate the resulting temperature for a stream of air through a hot tube? Given the temperature T 1 and volume flow rate V ˙ at the start of the tube, which has a temperature of T 0 and an inner surface of A 0, what is the resulting temperature of the stream going out of the tube? ( T 2 ).