Chapter 7, Problem 7.23P

During a process with air, the entropy increases by 0.55 kJ/(kg·K). The pressure compression ratio is 10 and the initial temperature is 300K.  Find the final temperature assuming a) constant heat capacities and b) variable heat capacities? (Rair = 0.287 and cp = 1.005 kJ/kg·K)

Topic: Ideal gas process Instructions: Answer the following review questions and show complete solutions. *please write legibly. Thank you

Air enters a blower at 20°C and exits at 28.38°C. The inlet velocities of air are 100 m/s and 150 m/s respectively. Find the mass flow rate if the blower consumes a power of 15 kW, assuming adiabaticconditions. Take cp of air is 1.005 kJ/kg-K.   Need answers and solutions. ASAP...

I need the answer as soon as possible

Q3. An internal combustion engine consumes 6 kg of fuel per hour, ip of engine is 27 kW and mechanical efficiency is 80%. It uses 12 kg of cooling water per minute and the inlet and outlet temperature of water being 18 °C and 48 °C respectively. The exhaust gases raise the temperature of 8.4 kg/ water through 32 °C. The orific value of fuel used is 44 MJ/kg. Calculate the indicated thermal efficiency, overall efficiency of the engine and draw heat balance sheet.

a- In the fig shown air entering a diffuser at 70 kpa , 27 °C , with a velocity of 100 m/s. and leaves at 20 m/s. If Air the inlet cross section area of 1cm? and the outlet 8.6 cm determine the exit pressure and temperature of air.( 1 kJ/kg = 1,000 m/s²) consider the case of ideal gas and CP = 1.004 kJ/kg.

p91#16. 1000CFM of air are compressed at constant tem,perature of 85 degree farenheit and 198psia to 580psia. for both nonflow and steadyflow, compute integral fo pdv, -integral of Vdp, change in entropy and change in enthalpy

p61#6.  Carbon Dioxide at p₁ = 500 psia,v₁ = ft/min, and t₁ = 200°F are cooled at constant volume to 130°F in an internally reversible manner. For m=0.9 lbm/min, determine in ∫pdv and -∫vdp. For nonflow process, find p2, change of internal energy, change of enthalpy, and Q. Also, compute change of entropy.

Q 3 A nozzle shown in Fig. Q 3, receives steam at 7 bar and 200°C and expands it reversibly and adiabatically (i.e., isentropically) into a space at 3 bar where its quality or dryness fraction is 98%. Neglecting the inlet velocity, calculate the exit diameter required for a mass flow rate of 0.1 kg/s. Inlet-1 Exit-2 V, »V, V Convergent-divergent nozzle Insulation Control surface Figure for Q 3