Among the refrigerants listed, select the best one for a refrigeration cycle that operates with a condenser temperature of t = +30°c and an evaporator r50 ): 4 r32 ): 22 r14 ): t 4 r170 h ): t 26 t = −161.5°c, t = −82.6 = −51.7°c, t = +78.1°c t = −121.8°c, t = −45.6°c = −88.6°c, t = +32.2°c temperature of t = −31.7°c.

Two flowing streams of argon gas are adiabatically mixed to form a single flow/stream. one stream is 1.5 kg/s at 400 kpa and 200 c while the second stream is 2kg/s at 500 kpa and 100 ? . it is stated that the exit state of the mixed single flow of argon gas is 150 c and 300 kpa. assuming there is no work output or input during the mixing process, does this process violate either the first or the second law or both? explain and state all your assumptions.

Hydraulic fluid with a sg. of 0.78 is flowing through a 1.5 in. i.d. pipe at 58 gal/min. the fluid has an absolute viscosity of 11.8 x 105 lbf-sec/ft2. is the flow laminar, turbulent or within the critical range? give both a numerical reynolds number and a term answer.

Determine the damped natural frequencies and the steady state response of a decoupled damped forced two degrees of freedom system. 10ä1 + 2q1 20q1 10 cos t; 10q2 +4q2 + 40q2 10 cos t