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About boiler steam

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MECN 302 (ENGINEERING)

Instelling
Technische Universiteit Eindhoven (TUE)

A boiler is a closed vessel that produces steam or hot water for heating purposes. It is designed to transfer heat from an external source into the water that will be used to generate steam or hot water. Boilers are used extensively in industrial and commercial applications, as well as for resident...

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Geupload op 28 augustus 2023
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Type College aantekeningen
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BOILER

INTRODUCTION ABOUT BOILER

A boiler is a device used to heat water or other fluids to produce steam or hot water for a variety of
applications. Boilers are commonly used in manufacturing, power generation, and heating systems for
buildings. The basic principle behind boiler operation is to transfer heat from the combustion of fuel
to the water, allowing it to be converted to steam or hot water for use in various applications.
Boilers can run on a variety of fuels, including natural gas, oil, and biomass, and are available in a
range of sizes and configurations to suit various needs.

Boilers can be classified into various types, including fire-tube boilers, water-tube boilers, and
electric boilers. Fire-tube boilers are the most common type, consisting of a tank of water that is
heated by the combustion of fuel, which passes through a series of tubes. Water-tube boilers, on
the other hand, contain water in tubes that are heated externally by combustion gases. Electric
boilers use electricity to heat the water directly, making them highly efficient and easy to install.

Proper maintenance and operation of boilers are essential to ensure their efficiency and safety.
Boilers must be inspected and serviced regularly by qualified technicians to detect any potential issues
and prevent them from becoming major problems. Additionally, new technologies and advancements in
boiler design are continually being developed to improve their efficiency and reduce emissions to
create a more sustainable energy source.

BASIC PRINCIPLES OF STEAM

Chemical energy from the combustion of shells and fibre in the steam boiler is converted into heat
energy (heat)

The temperature will increase when Italos moves from the combustion chamber to the water in the pipe

Specific water kal:

The number of heat required to raise 1oC at 1 kg of water

The heat specs of water refer to its specific heat capacity, which is the amount of heat energy required
to raise the temperature of one gram of water by one degree Celsius.

The specific heat capacity of water is approximately 4.18 joules per gram per degree Celsius (4.18
J/g°C), or 1 calorie per gram per degree Celsius (1 cal/g°C). This means that water can absorb a
large amount of heat energy without a significant increase in temperature.

, Sensible:

Heat given continues to water until the water is boiling

Heat sensible refers to the heat that can be sensed or measured by temperature change without any
change in state or phase of the substance. This means that the heat energy is added or removed from a
substance, causing its temperature to increase or decrease, while the substance remains in the same
physical state.

For example, when you heat water on a stove, the heat sensible is the energy that is transferred from
the stove to the water, causing the water temperature to increase without changing its physical state
from liquid to gas. Similarly, when you cool a beverage in a refrigerator, the heat sensible is the
energy that is removed from the beverage, causing its temperature to decrease without changing its
physical state.

Heat sensible is often used in calculations related to heat transfer, such as in heating and cooling
systems, and is important in understanding the thermodynamics of substances.

Heat Latent

WHEN YOU HAVE REACHED THE BOILING POINT IF THE HEAT CONTINUES

GIVEN THE WATER, THE TEMPERATURE IS NOT GIVEN

WILL RISE AGAIN, BUT THERE IS A FORM CHANGE IN FORM

WATER (WATER WILL EVAPORATE, TURNING INTO THE FORM INTO STEAM)

Heat latent refers to the heat energy that is absorbed or released during a change in state or phase of
a substance, without a corresponding change in temperature. This means that the heat energy causes
the substance to transition from one physical state, such as a solid, liquid, or gas, to another, and is
often associated with the phase transition.

For example, when you heat ice, the heat energy is absorbed by the ice, causing it to melt into liquid
water. During this process, the temperature remains constant, even though the ice is absorbing heat
energy. The heat energy absorbed by the ice is called heat latent, or latent heat of fusion.

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