Ex.1 A small liquid water pump is located 15 m down in a well, taking water in at 10°C, 100 kPa at a rate of 1.5 kg/s. The exit line is a pipe of diameter 0.04 m that goes up to a receiver tank maintaining a gauge pressure of 400 kPa. Assume that the process is adiabatic, with the same inlet and exit velocities, and the water stays at 10°C. Find the required pump work. Steariu H

Ex.1 A small liquid water pump is located 15 m down in a well, taking water in at 10°C, 100 kPa at a rate of 1.5 kg/s. The exit line is a pipe of diameter 0.04 m that goes up to a receiver tank maintaining a gauge pressure of 400 kPa. Assume that the process is adiabatic, with the same inlet and exit velocities, and the water stays at 10°C. Find the required pump work. Steariu H

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter40: Typical Operating Conditions

Section: Chapter Questions

Problem 10RQ: The seasonal energy efficiency ratio (SEER) includes the energy used in the _____and _____cycles.

See similar textbooks

Similar questions

R-134a is throttled in a line flowing at 25°C, 750 kPa with negligible kinetic energy to a pressure of 165 kPa. Find the exit temperature and the ratio of exit pipe diameter to that of the inlet pipe (Dex/D;n) so the velocity stays constant.
A 6cm inlet valve and a 3cm exhaust valve in a turbocharged engine, assume both valves have a discharge coefficient of 0.7 and a lift of 8mm. Find the mass flow rate (in kg/s) at IVO if the cylinder pressure is 115kPa, the inlet manifold pressure is 140kPa, and the manifold air temperature is 310K.
If 8.5kg of of air are compressed isothermally from 90kPa 8m3 to 600kPa. Find the Work for a nonflow system (kJ)
Q4:- A small dam has a pipe carrying liquid water at 150 kPa, 20°C with a flow rate of 2000 k in a 0.5 m diameter pipe. The pipe runs to the bottom of the dam 15 m lower into a turbinę w pipe diameter 0.35 m. Assume no friction or heat transfer in the pipe and find the pressure Pr ab turbine inlet. If the turbine exhausts to 100 kPa with negligible kinetic energy what is the rate of work? DAM 2 Turbine 3
Problem 2: A turbine accepts steam at 3000kPa and 800 °C and leaves at 100 kPa with a quality of 30%. If the Criss flow rate is 5 he's determine the power puput. (Neelect kinetic & potential energy changes. Neglect heat kg/s
A 650 bhp Diesel Engine with 6 cylinders has a brake thermal efficiency of 36 % and a jacketwater loss of 27%. It uses a closed cooling system with a cooling tower 10 meters high. Thetemperature rise after passing the water jacket is 12 °C and the cooling tower range is 5 °C. Make asketch showing the vital parts of the cooling tower system and calculate:a) capacity of the jacket water pump in GPMb) exhaust loss if the friction, radiation and other losses total 8%.c) cooling water flow rate in the cooling tower in liter/hrd) standard size electric motor to drive the raw water pump if the total dynamic head is 35 meters and the pump efficiency is 84%
Carbon dioxide at 200 kPa, 10°C flows at 1 kg/s in a 0.25-m2 cross-sectional area pipe. Find the velocity and the volume flow rate.
Derive the equation for turbine and nozzle with the help of steady energy equation by stating their assumptions.
a twin cylinder, double acting compressor with a clearance of 6% 25 m/min of air from 120 kpa, 40c to 750 kpa compressor is polytropic with 1.3. find the? (a) work (b) vd (c) the bore and storke for 150 rpm and l/d=12
A two stage air compressor has a suction condition of 100 kpa, 30 o C and has a capacity of 3m3/s. The discharge pressure is 750 kpa. Find the heat loss in the intercooler.
H.w : nitrogen gas flows into a convergent nozzle at 200 kpa 400 K and very low velocity .it flows out of the nozzle at 100 kpa ,330 K,if the nozzle is insulated find the exit velocity .C, for nitrogen =1.042
A steam is expanded through a nozzle and the enthalphy drop per kg of steam from the initial pressure to the final pressure is 70 kJ. Neglecting the friction, find the velocity of discharge.