Milk at an average of 70°F is flowing in a 2-in steel pipe, schedule 40. Steam at 220°F is condensing on the outside of the pipe. The convective coefficient for the milk inside the pipe is h = 500 btu/h.ft2 .°F and the condensing steam on the outside is h = 1500 btu/h.ft2 .°F. a) Calculate the heat loss per unit length of 1 ft of pipe using resistances equation. Your answer must be in SI unit. b) Repeat the calculation by using the overall heat transfer coefficient Ui based on the inside area Ai. Your answer must be in SI unit. c) Compare and discuss your answers in 3 (a) and 3(b)
Energy transfer
The flow of energy from one region to another region is referred to as energy transfer. Since energy is quantitative; it must be transferred to a body or a material to work or to heat the system.
Molar Specific Heat
Heat capacity is the amount of heat energy absorbed or released by a chemical substance per the change in temperature of that substance. The change in heat is also called enthalpy. The SI unit of heat capacity is Joules per Kelvin, which is (J K-1)
Thermal Properties of Matter
Thermal energy is described as one of the form of heat energy which flows from one body of higher temperature to the other with the lower temperature when these two bodies are placed in contact to each other. Heat is described as the form of energy which is transferred between the two systems or in between the systems and their surrounding by the virtue of difference in temperature. Calorimetry is that branch of science which helps in measuring the changes which are taking place in the heat energy of a given body.
Milk at an average of 70°F is flowing in a 2-in steel pipe, schedule 40. Steam at 220°F is
condensing on the outside of the pipe. The
is h = 500 btu/h.ft2
.°F and the condensing steam on the outside is h = 1500 btu/h.ft2
.°F.
a) Calculate the heat loss per unit length of 1 ft of pipe using resistances equation. Your
answer must be in SI unit.
b) Repeat the calculation by using the overall
inside area Ai. Your answer must be in SI unit.
c) Compare and discuss your answers in 3 (a) and 3(b)
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 8 images
