Basics 23 min read
TYPES OF FIRE EXTINGUISHERS
PORTABLE FIRE EXTINGUISHERS Introduction: Portable fire extinguishers are also known as chemical fire extinguishers or First Aid Fire Fighting Appliances.…
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Basics 11 min read
FIRE FIGHTING MEDIAS
1) WATER: Advantages: · good solvant · viscosity change with temperature is small so can be easily pumped. · high latent heat of…
General Concepts 1 min read
Suction and Discharge Nozzles
The suction and discharge nozzles are part of the casings itself. They commonly have the following configurationstwo of which are…
Basics 3 min read
Types of Fire and Fire Fighting Methods
Classes of Fire “A” Class Fire: solid fuels, e.g. wood, paper, cotton. “B” Class Fire: liquid fuels. e.g.…
General Concepts 2 min read
Stationary Components
Casings Description: centrifugal-pumps Figure 4: Cut-Away of a Pump Showing Volute Casing Casings are generally of two types: volute and…
Basics 2 min read
TRANSMISSION OF HEAT
1) conduction the heat travels through the molecule of substance without movement of molecule themselves.(molecule doesn’t travel.) 2) convection :…
General Concepts 1 min read
General Components of Centrifugal Pumps
A centrifugal pump has two main components: A rotating component comprised of an impeller and a shaft A stationary component…
General Concepts 2 min read
Conversion of Kinetic Energy to Pressure Energy
The key idea is that the energy created by the centrifugal force iskinetic energy. The amount of energy given to…
General Concepts 1 min read
Generation of Centrifugal Force
Figure 1: Liquid Flow Path Insidea Centrifugal Pump The process liquid enters the suction nozzle and then into eye (center)…