Chapter 3

Steam Generators

3.1 ❐ INTRODUCTION

A steam generator, popularly known as a boiler, is a closed vessel made of high-quality steel in which steam is generated from water by the application of heat. The water receives heat from the hot gases formed by burning fuel through the heating surface of the boiler. Steam is mainly required for power generation, process heating, and space heating purposes.

3.2 ❐ CLASSIFICATION OF STEAM GENERATORS

Steam generators are classified based on the following:

  1. Water tube and fire tube: In a water tube boiler, water or steam flows through the tubes and heat is supplied to the external surface. Babcock and Wilcox and Stirling boilers fall under this category.

    In a fire tube boiler, hot gases flow through ...

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