In these notes the procedure of solving a numerical problem on Boiler performance is explained with an example.

1. Solution of numerical problem on
Boiler performance - Part 1
Presentation by:
Avdhesh Tyagi
Asst. Prof.
Department of Mechanical Engineering
G. L. Bajaj Institute of Technology & Management, Greater Noida
Disclaimer: The materials provided in this presentation and any comments or information
provided by the presenter are for educational purposes only. Nothing conveyed or provided
should be considered legal, accounting or tax advice.

2. Name of Subject: Applied Thermodynamics
Subject Code: KME401
Department of Mechanical Engineering
G. L. Bajaj Institute of Technology and Management,
Greater Noida, Uttar Pradesh
College code: 192
Affiliated to Dr. A.P.J. Abdul Kalam Technical University (Formerly UPTU Lucknow).
Unit 3
Topic covered: Numerical problem on Boiler
performance - Part 1

3. Problem statement
The following readings were obtained during a
boiler trial of 1 hour duration:
• Mean steam pressure = 12 bar;
• Mass of steam generated = 5000 kg;
• Mean dryness fraction = 0.85;
• Mean feed water temperature = 30℃;
• Coal used = 500 kg;
• Calorific value of coal = 35000 kJ/kg.
Calculate the following:
(i) Factor of equivalent evaporation;
(ii) Equivalent evaporation from and at 100°C;
(iii) Actual evaporation;
(iv) Boiler efficiency.

4. Solution

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