Completely solve and box the final answers. Write legibly 1. A Brayton gas cycle produces a net load of 600 Btu/lb for an entrance temperature of 40°F and heat addition temperature of 2500°R. a. Draw the system with a designated level of a given values b. Calculate the pressure ratio of air required in the system

Please no written by hand solutions Explain briefly the importance of draft pressure during boiler operation.

Q.13 An automobile carburettor having its flost chamber vented to the atmosphere is tested at sea level conditions in the factory without air cleaner. The main metering system of this carburettor is found to yield a fuel-air ratio of 0.065. The venturi throat pressure is 0.85 bar. The carburettor is now installed in an automobile and air cleaner is placed on the inlet to carburettor. The air flow rate with or without air filter is 230 kg/hr. The pressure drop through the filter is found to be 0.035 bar at sea level conditions. Issuming 7 0und orifice cocfficient to be constant calculate: The venturi throat pressure with air cleaner. (11) Air-fucl ratio with air cleaner,

A The compression ratio of a diesel cycle is 15.5, and the cutoff occurs at 10% of the stroke.14 psia and 600 K characterize state 1. Calculate the following for the hot-air standard with k= 1.34and a starting volume of 2 cu ft:a. Find T2 , P2 , V2 , T3 , V3 , P4 , and T4b. Compute the heat added (QA),heat rejected (QR), work (W) andthe cycle efficiency (e).c. for a rate of circulation of 1000 cfm,compute the horsepower.

Write about the working and construction of a compressor which is having a cooling system in order to cool the pressurized air and also gives maximum pressure rate with a neat diagram and parts.

A The compression ratio of a diesel cycle is 15.5, and the cutoff occurs at 10% of the stroke. 14 psia and 600 K characterize state 1. Calculate the following for the hot-air standard with k= 1.34 and a starting volume of 2 cu ft:a. Find T2 , P2 , V2 , T3 , V3 , P4 , and T4b. Compute the heat added (QA), heat rejected (QR), work (W) and the cycle efficiency (e).c. for a rate of circulation of 1000 cfm, compute the horsepower

1. What is the reason behind the rising in the static pressure where it's in-state 3 larger than state 2, and in state 2 larger than state 1? 2. What is the reason behind the name of a centrifugal compressor (i.e. centrifugal)?

QUESTION 20 A single-stage, single-acting air compressor with runs at speed 600 rpm. It has a polytropic index of 1.26. The induced volume flow rate is 7.2 cubic meters per min and the air must be delivered at a pressure of 674 kPa. The free air conditions are 101.3 kPa and 15 degrees Celsius. The clearance volume is 6% of the stroke volume and the stroke/bore ratio is 1.6/1. Calculate the delivery air. Hint answer usaully in C and no need for °C.

Compute for the discharge pressure in bar of a single-acting air compressor if the piston-arrangement has a clearance of 7.5% and a volumetric efficiency of 75%. The isentropic compression has an intake pressure of 750 mmHg a. 4.46b. 5.57c. 6.68d. 7.79

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