Chapter 9, Problem 9.98P

S8

Two Carnot engines work in series between source and sink temperature of 04 1200K and 300K. Find out the intermediate temperature if 1) Both engines having same efficiency 2) Both engines develop equal power.

W A polytropic process of air from 150 psia, 300 deg F, and 1 ft³ occurs to a final pressure of 20 psia in accordance with pV1.3-C. Determine

Write legibly, provide manual step by step solution, and diagram for below given problem. Steam enters a turbine at 1.4 Mpa and 320. The turbine internal efficiency is 70%, and the total requirement is 800 kw. The exhaust is to the back pressure system, maintains at 175kpa. Find the stean flow rate. a. 2.62 kg/s    c. 3.23 kg/sb. 4.23 kg/s   d. 5.34 kg/s

Find the COP of heat pump operating between 300 K and 600K temperature. If the same temperature ranges are used in heat engine, find the efficiency.

Q.7 The COP of the heat pump is found to be 5.62, and the heat pump operates with the source at 25°C, while the heat absorbed is 2.12 kW. What is the amount of heat rejected ?

Q.1/ The hot source temperature is 227 degree Celsius and the sink is 127 degree Celsius of the Carnot engine. Find the efficiency of the engine. Also find the heat input from the source and the heat rejected to the sink when 10000 J of work is done. Draw the flow energy diagram

5. A single row impulse turbine receives 3 kg / sec steam with a friction etc amount to 15 KW, determine the blading efficiency and the blade velocity coefficient. The nozzle angle is 16° and the blade exist angle is 17°

Carnot engine absorbs 300 J of heat from a reservoir at the temperature 373.15 K and rejects heat to a reservoir at the temperature of the triple point of water ( T2 = 273.16 K )  Find the heat rejected, the work done by the engine and the thermal efficiency.