Complete Analysis of Heat Engine Goal Solve for the efficiency of a heat engine using a five-step process the includes: 1. Making a state table. 2. Making a process table. 3. Calculating the totals for Work, Heat, and Internal-Energy-Change. 4. Identifying the heat input (hot reservoir) and output (cold reservoir). 5. Calculating the efficiency of the engine. Problem Shown in the figure to the right is a cyclic process undergone by a heat engine. Your heat engine shall use 7.0 moles of nitrogen gas (diatomic). During the process a->b, the pressure rises by a factor of 2.0. P T₁ = 300 K Pa Engine Cycle isothermal = 100,000 Pa V

2.1 A well-insulated, frictionless piston-cylinder assembly is connected by a valve to an air supply line at 8 bar, as shown in the figure. Initially, the air inside the cylinder is at 1 bar and 300°K and the piston is located 0.5 m above the bottom of the cylinder. Atmospheric pressure is 1 bar and the diameter of the piston face is 0.3 m. The valve is opened and air is admitted slowly until the volume of air inside the cylinder has doubled. Calculate a) the work done in kJ, and b) the final mass in kg of the air inside the cylinder for a supply temperature of 300°K. Air supplv line

During one cycle the working fluid in an engine engages in two work interactions: 15 kJ to the fluid and 44 kJ from the fluid, and three heat interactions, two of which are known: 75 kJ to the fluid and 40 kJ from the fluid. What is the magnitude and direction of the work? What is the magnitude and direction of the third heat transfer? State the formula we used. Solutions/answer must be accurate.

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1.2 A reversible heat pump is used to maintain a temperature of 0°C in a refrigerator when it rejects the heat to the surrounding at 25°C. (i) If the heat removal rate from the refrigerator is 1440 kJ/min, determine the COP of the machine and work input required. (ii) If the required input to run the pump is developed by a reversible engine which received heat at 380°C and rejects heat to atmosphere, then determine the overall COP of the system.

16. Calculate the number of solar thermal collectors of 2m2 area each, required to design a solar water heater that produce a 1000 kg/day of hot water with temperature of50oC from a cold water of temperature of 10oC, suppose the specific heat of water is 1.2 Wh/kg. K and the useful heat is 2400 Wh/m2/day: * Number of collectors 20. Number of collectors = 10. Number of collectors = 5. %3D None of the above.

Thermodynamics- hand write pls

3.5 A novel heat engine is being considered for producing work from the thermal energy contained in the wastewater discharge from a large food-processing plant. On an average day, 35 ° C wastewater leaves the plant and is discharged into the ocean at 1,000 gallons per minute. If the average annual ocean temperature is 10 ° C at that location, what is the maximum power that could be produced by this heat engine? What would be the thermal cycle efficiency of your maximum power engine? You can assume that the heat capacity of water at constant pressure is constant at 4,200 J/kg K.

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