assuming point 1 is at the pumpe entrance. and determine the required power to operate the pump, cycle thermal efficiency.

12:44 A moodle1.du.edu.om The water in a large lake is to be used to generate electricity by the installation of a hydraulic turbine-generator at a location where the depth of the water is 50 m. Water is to be supplied at a rate of 5000 kg/s. If the electric power generated is measured to be 1862 kW and the generator efficiency is 95 percent The power in the shaft is Select one: O a. 1962 KW O b. 2455 KW C. 1865 KW O d. 2150 KW

Q1) A heat exchanger is to be designed to heat 32/68 mixture of ethylene glycol and water from 24 ᵒC to 55 ᵒC by a hot water stream from 79 ᵒC to 42 ᵒC. Flow rate of cold stream is 20 kg/s. Inlet pressure for both stream is 50 psi and the maximum pressure drop of 10 psi for cold stream and 8 psi for hot water are permissible. Report valid assumptions made for the design and give required justification. Estimate    Heat Transfer, Corrected LMTD,  Tube bundle diameter (Using TEMA standards and Codes) and Tube cross sectional area Heat transfer coefficient Overall heat transfer coefficient Pressure Drop (Shell side & Tube Side)

10. Recall when you were collecting data for the Entrance Loss experiment, there was a ten second delay before the data was posted in Excel. Why was there a delay, and why was it important? 11. Were your theoretical entrance loss factors, KL, higher or lower than your experimental value? What may be some causes for each entrance type? Concentric Tube Heat Exchanger 12. Why was it difficult to achieve steady-state conditions? 13. List at least two assumptions that are being made in the Heat Exchanger experiment, and explain the reasons why they are approximations. 14. What are thermal and hydrodynamic entrance lengths? Are either (or both) of them an issue for the experiment? Why or why not?