Chapter 6, Problem 6.137EP

1:Heat flows from a hot reservoir at 800 K to another reservoir at 250 K. H entropy change of the overall process is 4.25 kJ/K, make calculations for the heat flowinger of the high temperature reservoir.

Q2/ Air is contained in an insulated, rigid volume at 20°C and 200 kPa. A paddle wheel, inserted in the volume, does 720 kJ of work on the air. If the volume is 2m3, calculate the entropy increase assuming constant specifi c heats.

i need the answer quickly

Q6) One kg of air is allowed to expand reversibly in a cylinder behind a piston in an isothermal process at 260°C, while the volume is doubled. The piston is then moved and heat rejected at constant pressure until the volume is the same as it was initially. Find the heat flow and the overall change of entropy.

1. A heat pump design creates a heating effect of 35 kW while using 15 kW of electrical power. wwww wwwwn wwwww w The thermal energy reservoirs are at 300 K and 250 K. www ww (a) Show the system sketch and label all the values given on it ww www u w w (b) Demonstrate the 1st law application for this system (c) Find entropy generation

In a constant pressure process, 325 KJ of heat are added to 6.55 kg of ideal gas(R=208 J/kg-K and k = 1.65) initially at 290 K. Calculate:a. Final Temperatureb. Change in enthalpyc. Change in internal energyd. Change in entropye. Non-flow work

120 kJ of heat is added to 2.27 kg of gas (R =319.2 J/kg K, k = 1.26) in a piston-cylinder at constant pressure when the initial temperature is 305.2 K. Find the work of nonflow in kJ and entropy change in kJ/K

Thermodynamics subject. Pleas show the complete and step by step solution. A vessel of 0.058m3 capacity is well insulated and is divided equally by a rigid conducting diaphragm. Initially both halves contain air pressure of 137.8kPa and 413.4kPa and temperatures of 27C and 177C respectively. What is the increase of entropy of the system in kJ/C?

Thermodynamics: Please show me how to solve the given practice problems in step by step solution.