NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. An adiabatic pump is to be used to compress saturated liquid water at 10 kPa to a pressure of 15 MPa in a reversible manner. 15 MPa Pump Determine the work input using average specific volume and pressure values. (You must provide an answer before moving on to the next part.) The work input is kJ/kg.

NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. An adiabatic pump is to be used to compress saturated liquid water at 10 kPa to a pressure of 15 MPa in a reversible manner. 15 MPa Pump Determine the work input using average specific volume and pressure values. (You must provide an answer before moving on to the next part.) The work input is kJ/kg.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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! Required information Problem 08.048 - DEPENDENT MULTI-PART PROBLEM - ASSIGN ALL PARTS - Piston Device with Refrigerant NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A piston-cylinder device initially contains 2 kg of refrigerant-134a at 100 kPa and 20°C. Heat is now transferred to the refrigerant from a source at 150°C, and the piston, which is resting on a set of stops, starts moving when the pressure inside reaches 120 kPa. Heat transfer continues until the temperature reaches 80°C. Assume the surroundings to be at 25°C and 100 kPa. R-134a 100 kPa 20°C Q 150°C Problem 08.048.c - Exergy Destroyed by Piston Device with Refrigerant Determine the exergy destroyed. (You must provide an answer before moving on to the next part.) The exergy destroyed is kJ.
Question 42 A device that operates on a permanent basis is capable of producing 135 kJ of work for each kg of H2O inside. The pressure and temperature of input are 600 kPa and 200 °C, respectively, with input speed of 16 m/s. It is known that the inlet pipe is 32 m high in relation to the level of the ground and that the outlet pipe is exactly at ground level. The conditions of discharge are 280 kPa, 150 °C and 270 m/s. Heat loss to the environment between the inlet and outlet of the device is 9 kJ/kg of fluid. Determine the variation of the specific internal energy of the fluid when draining inside this device.
Question 4 A steam turbine operates with an inlet condition of 30 bar, 400 °C, 160 m/s and an outlet state of a saturated vapour at 0.7 bar with a velocity of 100 m/s. The mass flow rate is 1200 kg/min and the power output is 10800 kW. Present the process on the T-v diagram. Determine the magnitude and direction of the heat-transfer rate in kJ/min if the potential energy change in negligible.
stion Completion Status: QUESTION 37 In an experiment, a certain amount of air is heated at constant pressure from 1.7 m, 33 °C and 97 kPa to 408 C. It is then cooled at constant volume back to its initial temperature. Calculate the change specific entropy in the cooling process in the correct unit in SI and 1 decimal place. Take Specific heat at constant pressure and constant volume for air as 1.005 kJ/kg K and 0.717 kJ/kg K respectively. add units. I decimal place. QUESTION 38 Save A Click Save and Submit too save and submit. Click Save All Answers to save all answers. 9d6070-5984-jpg O Type here to search
3. 0.5 kg of air with a pressure of 2 MPa and a temperature of 250 °C expands while satisfying the relationship of'PV^1.25=constant'. Find what has been done during this process as it expands until the temperature reaches 330 K.
Task 2 Your second customer wants to determine the dissipated electrical power by a personal computer, which has a fan that draws 5 L/s of air at 101.325 kPa and 21°C through the box containing the CPU and other components. After that air leaves at 101.325 kPa and 30 °C. Figure 2: Schematic for task 2. You must follow the following parts to do your task: Part 1 Derive the steady flow energy equation (SFEE) from the first principles. You are required to show all the steps in deriving the SFEE and using both the principles of mass and energy conversation. Part 2 Produce specific steady state energy equation (SFEE) by stating all the stated assumption in this equipment in order to be used in later stages without further analysis. Then calculate the pump power. Part 3 Apply the short form to determine the dissipated electrical power by the personal computer.
b) Air with a volume of 0.031 m³ is trapped in a piston-cylinder assembly at a temperature of 40°C and a pressure 102 kPa. The air is compressed adiabatically to a pressure 350 kPa. cv = 0.718 kJ/kg.k and cp = 1.00 kJ/kg. K Determine The work done during this process.
You work in a company in the energy sector. The competition announces a new turbine that can operate at low temperatures thanks to the use of R134a as the working fluid. According to the competition, this adiabatic turbine has the characteristics shown in the figure below when operating in steady state. (a) How much Power would this turbine generate? (b) Is it possible that it operates as the competition says? Turbina = turbine
4.61 Apiston/cylinder arrangement shown in Fig. P4.61 initially contains air at 150 kPa and 400°C. The setup is allowed to cool to the ambient temperature of 20°C. a. Is the piston resting on the stops in the final state? What is the final pressure in the cylinder? b. What is the specific work done by the air during the process? Air FIGURE P4.61 1m 1m
Q2 O of O points Q2:In a steam power plant operating at steady state is supplied to the high pressure turbine at 5 MPa and 400 °C. after expansion to 500 kPa the steam is reheated at constant pressure to the original temperature. The steam expands in in the low pressure turbine to an exhaust pressure of 10 kPa . Find 1- h:
! Required information NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A piston-cylinder device initially contains 1 kg saturated liquid water at 200°C. Now heat is transferred to the water until the volume quadruples and the cylinder contains saturated vapor only. The saturated liquid properties of water at 200°C 3 are vf= 0.001157 m³/kg and uf- 850.46 kJ/kg (Table A-4). Water mkg 200°C Q Determine the final temperature and pressure. (You must provide an answer before moving to the next part) The final temperature is The final pressure is °C. kPa.