A turbo-charge, 16 cylinder, Vee-type diesel engine has an air consumption of 3,000 kg/hr per cylinder at rated load and speed. This air is drawn in through a filter by a centrifugal compressor directly connected to the exhaust gas turbine. The temperature of the air from the compressor is 145 C and a counter flow air cooler reduces the air temperature to 45 C before it goes to the engine suction header. Cooling water enters air cooler at 30 C and leaves at 38 C. Calculate the quantity of cooling water in m3/hr required to cool the total air requirements of the engine at rated load and speed. ( hint: use AMTD

A turbo-charge, 16 cylinder, Vee-type diesel engine has an air consumption of 3,000 kg/hr per cylinder at rated load and speed. This air is drawn in through a filter by a centrifugal compressor directly connected to the exhaust gas turbine. The temperature of the air from the compressor is 145 C and a counter flow air cooler reduces the air temperature to 45 C before it goes to the engine suction header. Cooling water enters air cooler at 30 C and leaves at 38 C. Calculate the quantity of cooling water in m3/hr required to cool the total air requirements of the engine at rated load and speed. ( hint: use AMTD

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

Chapter45: Domestic Refrigerators And Freezers

Section: Chapter Questions

Problem 20RQ: Welded ______sealed compressors are normally used in household refrigerators.

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A turbo-charge, 16 cylinder, Vee-type diesel engine has an airconsumption of 3,000 kg/hr per cylinder at rated load and speed. Thisair is drawn in through a filter by a centrifugal compressor directlyconnected to the exhaust gas turbine. The temperature of the air fromthe compressor is 145 C and a counter flow air cooler reduces the air temperature to 45 C before it goes to the engine suction header. Cooling water enters air cooler at 30 C and leaves at 38 C. Calculatethe quantity of cooling water in m3/hr required to cool the total airrequirements of the engine at rated load and speed. (Use AMTD)
A turbojet aircraft moving with a velocity of 790 ft/s at a runway where the pressure& temperature is found to be 14.7psi & 546R. The axial flow compressor provides apressure ratio of 14 to 1. Temperature at the turbine inlet is 2000R. The mass flowrate of airinside the engine is 133 lbm/s. Determine the following:a. T-S diagramb. Pressure & temperature at each statec. Thrust force (lbf)d. Propulsive power developed (BTU/min)e. Propulsive Efficiency
The standard Brayton air cycle has a compressor pressure ratio of 10. Air entering the compressor at p1 = 14.7 lbf/in., T1 = 70oF with a mass flow rate of 90,000 lb/hour. The entrance temperature of the turbine is 2200oR. Calculate the thermal efficiency and clean power generated, in horsepower (HP), if.
Answer this ASAP,thx In a gas turbine, air enters the compressor at a temperature of 290 K and a pressure of 100 kPa with a mass flow rate of 6 kg/s. The system pressure ratio is 10 and the exit temperature of each turbine stage is 1400 K. The efficiency of the compressor and turbine is 70% while the effectiveness of the regenerator is 70%. Value of K = 1.4, calculate A) thermal efficiency B) workback ratio C) net power generated
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A gasoline engine that operates in an air-standard Otto cycle has a total displacement volume 0.95 ft3 running at 2250 RPM, and a clearance volume of 15%. A 715 BTU/lbm of heat is added at constant volume. The initial conditions of air prior to the compression are 80oF and 14.5 psia. COnsidering variations of heat at given temperatures, determine the maximum pressure and temperature in the cycle, the work net, the total power in hP, and the thermal efficiency of the cycle. Draw the P-V and T-S diagram.
Air enters the compressor of a regenerative gas-turbine engine at 100 kPaand 300 K and is compressed to 800 kPa. The regenerator has aneffectiveness of 65 percent, and the air enters the turbine at 1200 K. For acompressor efficiency of 75 percent and a turbine efficiency of 86 percent,determine(a) The heat transfer in the regenerator.(b) The back work ratio.(c) The cycle thermal efficiency
at a stage in a reaction turbine, the mean blade ring diameter is 1 m. the turbine runs at 3000 rpm. the blades are designed for a degree of reaction of 50% with exit angles of 30° and inlet angles of 50°. the turbine is supplied with a steam at 10000 kglh and the stage efficiency is 85%. determine (a) power output of the stage, (b) specific enthalpy drop in kj/kg, (c) percentage increase in relative velocity of steam over moving blades, (d) the specific steam consumption
A turbojet-powered aircraft is flying at 220 m/s and 8000-m altitude, where the ambient temperature and pressure are 236K and 35kPa, respectively.The pressure ratio of the compressor is 6 and the turbine inlet temperaturer is 970k. Estimate the thrust developed by the engine when the air flow rate is 55kg/s. employ an air standard-cycle analysis using the constant-pressurree specific heat c_p and specific heat ratio γ for air and neglecting the fuel properties.
Air with a pressure of 0.1 MPa and a temperature of 25oC with a flow rate of 5.29 kg/minute enters a three-stage reciprocating piston compressor with intercooler. The air is compressed polytropically (n = 1.3) to reach the pressure of 4 MPa. Calculate: a) The pressure at stage-2 and stage-3 so that the compression work is minimum? b) The compression work in each stage and the total compression work? c) The outlet air temperature from each stage's cylinder? d) The amount of heat transferred to each intercooler? e) How much air is needed for cooling in the intercooler if the allowable maximum temperature changes between the inlet and outlet of the intercooler is 8oC?
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In a single stage impulse turbine the isentropic enthalpy drop of 200 kJ/kg occurs in the nozzlehaving efficiency of 96% and nozzle angle of 15°. The blade velocity coefficient is 0.96 and ratio ofblade speed to steam velocity is 0.5. The steam mass flow rate is 20 kg/s and velocity of steam enteringis 50 m/s. Determine(a) the blade angles at inlet and outlet if the steam enters blades smoothly and leaves axially.(b) the blade efficiency(c) the power developed in kW(d) the axial thrust.Solve using velocity diagram please use the symbols below