• 1.63 Ib of gas is stored in a tank of 2ft3. If the internal energy decreases by 27.4 BTU astemperature drops from 200F to 100F, find the specific heat at constant volume for this gas
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- QUESTION 56 A fluid at 0.8 bar occupying 0.09 m² is compressed reversibly to a pressure of 10 1 bar and specific volume of 0.7 m/kg according to the law pv = c. The fluid then expands reversibly according to the law pvZ= c to 2 9 bar Areversible cooling at constant volume then restores the fluid back to initial state. Calculate the net work for the process in Joules to round figure No mega or Kilo for units.THERMODYNAMICS (UPVOTE WILL BE GIVEN. PLEASE WRITE THE COMPLETE SOLUTIONS. NO LONG EXPLANATION NEEDED. ANSWER IN 3 DECIMAL PLACES. BOX THE FINAL ANSWERS. PLEASE ANSWER ALL) An unknown ideal gas (MW=10 kg/kmol and k=1.3) closed system underwent in a cycle described by the following processes below:Process 1-2 : From 40°C and 1 bar to 3 bars isentropicallyProcess 2-3: Polytropically to 5 bars at n=2Process 3-1: Isometrically Find the pressure at the 3rd state in bars and overall change of entropy for the cycle in kJ/kg-K.2. a. Take B °C, then convert it to Fahrenheit and Kelvin. b. Find the amount of heat needed to change the temperature of B g of ice from -D °C to B °C. The specific heat of water is 4186 J/kg °C, Latent heat of fusion is 3.33 x105 J/kg, laten heat of vaporization 2.25 x 106 J/ kg. c. A patient of mass B kg is spiking a fever of 105 Fahrenheit. The patient is immersed in ice bath 0°C ice to reduce the fever immediately back down to 98.6 Fahrenheit. How much ice must melt (bath stays at 0°C water) for this temperature reduction to be achieved? Latent heat of fusion is 3.33 x105 J/kg. and Specific heat of body is 3500 J/kg °C. d. A Styrofoam ice box has a total area of C/100 m² and walls with an average thickness of 2.50 cm. The box contains beverages at 0°C. The inside of the box is kept cold by melting ice. How much ice melts in one day if the ice box is kept in the trunk of a car at 35.0°C? Thermal conductivity of ice 0.010 J/s m ºC, Latent heat of fusion is 3.33 x105 J / kg. B:27.0…
- 02 A- Find internal energy and enthalpy of superheated steam at 100 bar and degree of superheating of 110 °C?For a certain ideal gas, R = 0.282Btu/lb-R and k = 1.32. If 30Btu/lb are transferred to this gas,what will be the temperature change at constant volume? a. 37.23400F b. 36.84210F c. 39.62260F d. 34.04260FCopy 6f Oxygen (molar mass 32 kg/kmol ) expands reversibly in a cylinder behind a piston at a constant pressure of 3 bar. The volume initially is 0.0146 m and finally is 0.0326 m the intial temperature is 16.81 °C. Calculate the specific eas constant with the correct unit to two decimal places, Assume oxygen to be a perfect gas and take the specific heat at constant pressure as- 0.917kj/kgK and molar gas constant as - 8.314 J/kmolK
- Box the final answer. Write legibly. From a state defined by 380 kpa gage, 15.6 m3 and 68°C, methane (CH4) gas undergoes an isentropic process to 38 kpa gage. Compute the difference between the change of enthalpy and the change of internal energy in KJ. K of methane gas is 1.321.1. I just need the graph or figure of it. One pound of an ideal gas undergoes an isentropic process from 95.3psig and a volume of 0.6ft3 to a final volume of 3.6 ft3. If cp = 0.124Btu/lb-R and cv = 0.093 Btu/lb-R, determine the final temperature of the gas (0F) and the work done by the gas (Btu).A) Steam enters a turbine at a pressure of 30 bars, temperature of 400 degrees Celsius and exits at a pressure of 1bar. The turbine is isentropic, how much power is produced per unit mass flow rate, w. Their is no change in kinetic or potential energy and no heat transfer. Answer in kJ/kg B) Steam enters a turbine at a pressure of 30 bars, temperature of 400 degrees celsius and exits at a pressure of 1bar. If the turbine is operating at 95% isentropic efficiency, how much power is being produced per unit mass flow rate, w. Their is no change in kinetic or potential energy and no heat transfer. Answer in kJ/kg C) Steam enters a turbine at a pressure of 30 bars, temperature of 400 degrees celsius and exits at a pressure of 1 bar. If the turbine at 95% isentropic efficiency, what is the quality of the steam exiting the turbine? Their is no change in kinetic or potential energy and no heat transfer.
- The machine is commenced to be heated at some point of a quasi-equilibrium manner till the temperature of air reaches to 900 K. During the manner the stress within the cylinder is held constant. Initially, 1kg air at 600K and at 150 kPa is contained in a piston - cylinder device. Air may be assumed as Ideal Gas below those conditions. a) Calculate the heat supplied to the air within the cylinder at some point of this process. b) Sketch the P[kPa]-V[m³] diagram of the process. Indicate the path of the process. No want to explicit the extent of the air at the diagram. Please do best a difficult sketch. c) Calculate the paintings achieved with the aid of using the air onto surrounding.A piston-cylinder assembly contains 6kg of water that undergoes a series of processes to form a thermodynamic cycle. Process 1-->2: Constant volume cooling from p;=3.0bar to p2=1.5bar and x2=0.728 to Process 2-->3: Constant pressure expansion Process 3->1: Polytropic compression with pv?=constant to the initial state Kinetic and potential energy effects are negligible. To help organize given information and fix states 1 and 3, consider sketching a Pv diagram. Evaluate the net work for the cycle in k). Enter a numeric value (don't type the units).1. a) Define thermal efficiency and give one example of heat engine. b) The graph in Figure 1.1 shows one mole of monoatomic gas at initial temperature of 40 ˚C and volume 2 L expanding isobarically at a constant pressure of 2.5 × 105 Pa to 5 L. It is then cooled down at constant volume to a pressure of 1.2 × 105 Pa. The gas is finally compressed isothermally back to its initial state. Calculate i. the work done in process AB. ii. the amount of heat absorbed from A to B. iii. the work done by the gas from C to A. iv. the total work done in the complete process.