Adouble acting cylinder is hooked up in a regenerative circuit. the cracking pressure for the relief valv is 1500 psi. the piston area is 45 in3 and the rod area is 10 in3. the pump flow is 20 gpm. find the cylinder speed, load-carrying capacity, and power delivered to the load during the a)-extending stoke and b)-retracting stroke. assume the load equals the cylinder load-carrying capacity.

Acommercial grade cubical freezer, 4 m on a side, has a composite wall consisting of an exterior sheet of 5.0-mm thick plain carbon steel (kst= 60.5 w/m k), an intermediate layer of 100-mm thick polyurethane insulation (kins 0.02 w/m k), and an inner sheet of 5.0- mm thick aluminium alloy (kal polyurethane insulation and both metallic sheets are each characterized by a thermal contact resistance of r 2.5 x 104 m2 k/w. (a) what is the steady-state cooling load that must be maintained by the refrigerator under conditions for which the outer and inner surface temperatures are 25°c and -5°c, respectively? (b) for power saving purpose, which wall material should be increased/reduced in. thickness in order to reduce 50% of the cooling load found in part (a)? redesign the thickness of the proposed material. 177 w/m-k). adhesive interfaces between the q=575.93 w