Chapter 7, Problem 7.4CU

Derive the seven general property equation of the following thermodynamics processes:   a. POLYTROPIC PROCESS

Find the temperature in degree C at state 4 to 2 deciamal places. QUESTION 35 The following processes occurs in a reversible thermodynamic cycle: 1-2: Reversible polytropic compression at pressure X] bar at volume [M] m° to a pressure [Z] bar and specific volume [A] m°/kg. The index of compression may be taken as n. 2-3: Reversibly expansion with expansion index of 2 to pressure [B] bar. 3-1: Reversible cooling at constant volume to the initial state. Calculate the work done for the constant volume process? Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Type here to search 由 acer

Each of the following statements describes a way of coping with temperature variation. Which scenario most likely includes positive heat transfer through convection? That is, in which scenario does Hconvection most likely have a positive (+) sign? Hanimal = +SR + IRin – IRout +/- Hconvection +/- Hconduction - Hevaporation + Hmetabolic Select one: a. A rabbit basking in the sun early in the morning. b. A lizard resting in the shade in a hot desert in the middle of the day. c. A bumblebee vibrating its flight muscles before flight. d. A ground squirrel hibernating in the winter. e. A bird fluffing its feathers on a cold day.

1.2 A four cylinder, four stroke diesel engine has brake mean effective pressure of 6 bar at full load speed of 600 rpm and specific fuel consumption of 0.25 kg/kWh. The cylinder has bore of 20 cm and stroke length of 30 cm. The air fuel ratio is measured as 26 from the exhaust gas analysis. The ambient conditions are 1 bar, 27°C. Assuming the calorific value of fuel as 43 MJ/kg determine 1.2.1 the brake thermal efficiency, 1.2.2 the volumetric efficiency, 1.2.3 the brake power.

Note:- • Do not provide handwritten solution. Maintain accuracy and quality in your answer. Take care of plagiarism. • Answer completely. • You will get up vote for sure.

within a piston-cylinder assembly undergoes a thermodynamic cycle consisting of A gas three processes: Process 1-2: Constant volume, V = 0.06 m², U2 - U, = 40.4 kJ Process 2-3: Expansion with PV = constant, U3 - U2= 0 Process 3-1: Constant pressure, P =3 bar, W31 = (-20) kJ There are no significant changes in kinetic or potential energy. %3D Identify the process on a sketch of p-V diagram plotted for the cycle. Formulate the expression for heat transfer for process 2-3 and process 3-1. (Hint: Apply first law of thermodynamics for closed systems) (a) (b) (c) Solve to find the net-work for the cycle and heat transfer for the process 2-3 and Heat transfer for process 3-1, in kJ Identify if the above system executes a power cycle or a refrigeration cycle. Give (d) reason.

Thermo 1 Pls answer asap thankyiu

This Concepts revolves around thermodynamics and this practice example may need a PV diagram Directions are below

Must answer all the questions. Dont solve it partially.