Back to Steam Engineering Tutorials
The Boiler House
An overview of boiler regulations, with an evaluation of fuel types and comparisons.
Overview of the different types of shell boiler with layouts, heat and steam release considerations plus pressure and output limitations.
Description of water tube boilers including operation, types and benefits; also, a brief synopsis on how they are applied to combined heat and power generation.
An explanation of specialist boiler types and other specialist features.
This tutorial explains the three most commonly used boiler ratings: The 'From and at' rating for evaporation, the kW rating for heat output, and boiler horsepower.
A broad overview of the combustion process, including burner types and controls, and heat output and losses.
An overview of the necessary fittings, accessories and controls for a boiler from nameplates and safety valves to gauge glasses and level controls.
This tutorial looks at steam header arrangements and other design considerations necessary for efficient warm-up, good steam quality and proper steam distribution from the boiler house.
A look at the chemistry of water supplies including hardness and pH values.
A steam boiler plant must operate safely, with maximum combustion and heat transfer efficiency. To help achieve this and a long, low-maintenance life, the boiler water can be chemically treated.
All aspects of the design, construction and operation of feedtanks and semi-deaerators, including calculations.
The need to measure and control the total dissolved solids (TDS) in the boiler water boiler water, and the methods used to do so, including closed loop electronic control with conductivity sensors.
Boiler water is blown down to control the amount of total dissolved solids (TDS) in the boiler. This water is pressurised, hot and dirty, creating large volumes of flash steam and possible disposal problems. A heat recovery system can reclaim large amounts of energy during this essential process.
Factors surrounding the removal of suspended solids from the boiler, including valves, piping and blowdown vessels, with calculations.
The level of water in a steam boiler must be carefully controlled, to ensure good quality steam is produced safely, efficiently and at the correct pressure.
The application of level controls and alarms, plus an overview of different level detection methods, including float-type controls, conductivity probes and capacitance devices.
A detailed explanation of on/off, modulating, two and three element automatic level control, with a comparison of pros and cons.
The function of high and low level alarms. Low-level alarms will draw attention to low boiler water level and, if required, shut down the boiler. High-level alarms protect plant and processes.
The pros and cons of direct versus externally mounted level controls.
Requirements for regular testing will vary according to national regulations, and the type of equipment installed.
The need to remove gases from boiler feedwater and the operation of a pressurised deaerator, plus calculations.
A complete overview of the need for steam storage to meet peak load demands in specific industries, including the design, construction and operation of a steam accumulator, with calculations.