A 300 ft-long 6-ft-wide parabolic trough concentrator receives normal sun radiation at 905 W/m2. A pipe at the focal line received 450 lbm /hour of water at 200 psia and at 100 oF and exits at 180 psia. Calculate the pipe exit conditions. Assume the concentrator reflective losses of 5 percent.

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false

Carbon dioxide gas expands isotherm a turbine from 1 mpa, 500 k at 200 kpa. assuming the ideal gas model and neglecting the kinetic and potential energies, determine the change in entropy, heat transfer and work for each kilogram of co2.

A-mn has a cubic structure with a0 0.8931 nm and a density of 7.47 g/cm3. b-mn has a different cubic structure, with a0 0.6326 nm and a density of 7.26 g/cm3. the atomic weight of manganese is 54.938 g/mol and the atomic radius is 0.112 nm. determine the percent volume change that would occur if a-mn transforms to b-mn.