# Month: January 2022

## Pressure of steam sample = 15 bar… solved problem

The following data were obtained in a test on a combined separating and throttling calorimeter : Pressure of steam sample = 15 bar, pressure of steam at exit = 1 bar, temperature of steam at the exit = 150°C, discharge from separating calorimeter = 0.5 kg/min, discharge from throttling calorimeter = 10 kg/min. Determine the …

## In an air motor cylinder.. 450 kJ/kg. solved problem

In an air motor cylinder the compressed air has an internal energy of 450 kJ/kg at the beginning of the expansion and an internal energy of 220 kJ/kg after expansion. If the work done by the air during the expansion is 120 kJ/kg, calculate the heat flaw to and from the cylinder. In an air …

## In an internal combustion.. 50 kJ/kg. solved problem

In an internal combustion engine, during the compression stroke the heat rejected to the cooling water is 50 kJ/kg and the work input is 100 kJ/kg. Calculate the change in internal, energy of the working fluid stating whether it is a gain or loss. In an internal combustion engine, during the compression stroke the heat …

## throttling calorimeter arranged. 760 mm of Hg. solved problem

The following observations were taken with a separating and a throttling calorimeter arranged in series : Water separated = 2 kg, steam discharged from the throttling calorimeter = 20.5 kg, temperature of steam after throttling = 110°C, initial pressure = 12 bar abs., barometer = 760 mm of Hg, final pressure = 5 mm of …

## A throttling calorimeter. cps = 2.1 kJ/kg K. solved problem

A throttling calorimeter is used to measure the dryness fraction of the steam in the steam main which has steam flowing at a pressure of 8 bar. The steam after passing through the calorimeter is at 1 bar pressure and 115°C. Calculate the dryness fraction of the steam in the main. Take cps = 2.1 …

## Steam at a pressure of 1.1 bar and 0.95 dry. solved problem

Steam at a pressure of 1.1 bar and 0.95 dry is passed into a tank containing 90 kg of water at 25°C. The mass of tank is 12.5 kg and specific heat of metal is 0.42 kJ/kg K. If the temperature of water rises to 40°C after the passage of the steam, determine the mass …

## Steam at a pressure of 5 bar passes into. solved problem

Steam at a pressure of 5 bar passes into a tank containing water where it gets condensed. The mass and temperature in the tank before the admission of steam are 50 kg and 20°C respectively. Calculate the dryness fraction of steam as it enters the tank if 3 kg of steam gets condensed and resulting …

## A piston-cylinder contains 3 kg of wet steam solved problem

A piston-cylinder contains 3 kg of wet steam at 1.4 bar. The initial volume is 2.25 m3. The steam is heated until its temperature reaches 400°C . The piston is free to moue up or down unless it reaches the stops at the top. When the piston is up against the stops the cylinder volume …

## Find the entropy of 1 kg of superheated.. solved problem

Find the entropy of 1 kg of superheated steam at a pressure of 12 bar and a temperature of 250°C. Take specific heat of superheated steam as 2.1 kJ/kg K. Find the entropy of 1 kg of superheated steam at a pressure of 12 bar and a temperature of 250°C. Take specific heat of superheated …

## Steam enters an engine at a pressure 10 bar.. solved problem

Steam enters an engine at a pressure 10 bar absolute and 400°C. It is exhausted at 0.2 bar. The steam at exhaust is 0.9 dry. Find : (i) Drop in enthalpy ; (ii) Change in entropy. Steam enters an engine at a pressure 10 bar absolute and 400°C. It is exhausted at 0.2 bar. The …