Engineering, 14.09.2019 01:10, bankskry
A1 m thick wall is made of concrete with a thermal conductivity of 1 w/m/k. there are temperature sensors on the wall's surface and buried within the wall 1 cm from each surface. one set of temperature sensors shows the surface at 30 °c and the subsurface at 32 °c, while the other shows the surface at 40 °c and the subsurface at 35 °c a. is the wall heating up or cooling down? b. what's the rate of change of thermal energy contained per unit area of wall? c. would your answer change if the wall were 0.5 m thick?
Answers: 3
Engineering, 04.07.2019 18:10, tjeffers90028
Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°c with a volumetric flow rate of 0.18 m3/s. refrigerant exits at 9 bar, 70°c. changes in kinetic and potential energy from inlet to exit can be ignored. determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kw.
Answers: 1
Engineering, 04.07.2019 18:10, jesuslovesusall3
Courses that are developed by subject matter experts, internal or extemal to the college or university. these programs are marketed by the school (clo2) marks a)-vocational schools b)-vendor training c)-colleges & universities d)-continuing education programs
Answers: 2
Engineering, 04.07.2019 18:20, krojas015
Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?
Answers: 3
Engineering, 04.07.2019 18:20, 21megoplin
How much power could a wind turbine produce if it had the following specifications? cp = 0.45 -d=1.2kg/m3 d=50m v 5m/s
Answers: 2
A1 m thick wall is made of concrete with a thermal conductivity of 1 w/m/k. there are temperature se...
Mathematics, 05.05.2020 02:01
Mathematics, 05.05.2020 02:01