An oil with k = 0.120 w/m ⋅ k, cp = 2,000 j/kg ⋅ k, rho = 895 kg/m^3, and µ = 0.0041 kg/m ⋅ s flows through a 2 cm diameter tube which is 2 m long. the oil is cooled from 60°c to 30°c. the mean flow velocity is 0.4 m/s, and the tube wall temperature is maintained at 24°c (µw = 0.021 kg/m ⋅ s). calculate the heat transfer rate.

On a average work day more than work place firs are reorted

For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater

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