PURPOSE:  The purpose of this laboratory exercise is to determine the appropriate size of conductors
                     and calculate pressure losses due to friction in a linear circuit while
                     the actuator is moving in the extension direction.

OBJECTIVE:  After completing this laboratory exercise, you should be able to do the following:

            1.  Determine the conductor size for steel pipe at the inlet of the pump;
            2.  Determine the conductor size for steel pipe at the outlet of the pump;
            3.  Determine the conductor size for SAE 1010 tubing on the outlet side of the pump;
            4.  Determine the conductor size for SAE flexible hose on the outlet size of the pump;
            5.  Calculate the pressure losses through each conductor section;
            6.  Determine the relief valve setting based on compensation for frictional losses and pressure override.

PROCEDURE:

            1.  Start on the RETURN side of the cylinder and determine the flow rate leaving the rod side of
                 the cylinder. 
            2.  Determine the theoretical minimum diameter for the flexible hose to be selected for section 8,7.
                 NOTE:  Select the highest working pressure for the SAE hose (from handouts provided in class).
                 and record the inside diameter of the selected hose.
            3.  Determine the pipe size for section 11,12,13 (DCV to Tank).  From the pipe size table in Appendix A
                 of your textbook, select the appropriate size pipe.
            4.  Using the Excel Pressure Drop Calculator, determine the pressure drop through pipes 11,12,13
                 and record your calculated value.  NOTE:  DCV should not be included in this section.
            5.  Determine the pressure drop through section 8,7.
            6.  Sum the pressure drops from the rod side of the cylinder to tank, and calculate the force due to
                 back pressure on the cylinder rod. 
            7.  Add F on rod side to the 18,000 lb. load on the cylinder and calculate the pressure required on
                 the cap side.
            8.  Determine the size of the flexible hose for section 9,10 and record the I.D. of the hose selected.
            9.  Select the tubing for section 4,5,6 based on the estimated working pressure of the conductor.
                 Compare the I.D. to the I.D. of section 9,10 and include the DCV in the section with the smaller diameter.
           10. Find the pressure drop through section 10,9.
           11. Find the pressure drop through section 4,5,6.  Note assume k=1 for the midpoint of the cross fitting, and
                 note the location is at midpoint of conductor 4.
           12. Find the total pressure drop from the cross fitting to the cap side of the cylinder by summing the pressure drops.
           13. Add calculated required pressure on the cap side of the cylinder to find required pressure at Gage A.
           14. Assuming a pressure override of 100 PSI for the relief valve, determine the theoretical setting of the valve.
           15.  Determine the pressure at Gage A, B, C and the required pump horsepower and the electric motor horsepower
                  to drive the pump for this circuit.
           16. Create a summary table conduction section, the pressure drop, pressure at point 2, and location of each section.
                 Show pressure and force calculations at the cylinder and the relief valve setting along with pressure at Gage A,B,C and
                 horsepower requirements. Include this table for the results section of your report.
           17. Write a formal lab report and submit by next lab period.
 

CIRCUIT: