Who invented electrostatic smoke precipitators?

According to the Archives of the Research Corporation for Science Advancement, we owe the basic idea of electrostatic precipitation to Dr Frederick Cottrell, who carried out the earliest experiments with the technology in 1906. In the patent he filed in

Types of smoke precipitators

Electrostatic smoke precipitators all work in essentially this way, with dirt particles gaining an electric charge from one wire or plate before being attracted to a second wire or plate with the opposite electric charge for collection and disposal. Even so, there are many variations, with ESP equipment designed to work in different ways for different-sized dirt particles made from different

How an electrostatic smoke precipitator works ?

Electrostatic smoke precipitators work by forcing dirty flue gas (the gas escaping from a smokestack) past two electrodes (electrical terminals), which take the form of metal wires, bars, or plates inside a pipe or smokestack. The first

Objective Solving Tricks for gate exam 2015

Most of time students complain that they couldn’t complete their objective paper; they were struck in one or another problem and wasted a lot of time. Some says that their guess went wrong and marks were deducted due to negative marking, some could not read paper completely and missed some easy questions etc.
I’ll like to stress that objective paper solving is different from subjective paper. You don’t need to study extra for objective questions but practice little bit.

Common Blower Types used in industrial purpuse

Blowers can achieve much higher pressures than fans, as high as 1.20 kg/cm2. They are also
used to produce negative pressures for industrial vacuum systems. Major types are: centrifugal
blower and positive-displacement blower. Centrifugal blowers look more like centrifugal pumps than fans. The impeller is typicallygear-driven and rotates as fast as 15,000 rpm. In

Types of centrifugal fan

Centrifugal FanTypes
The major types of centrifugal fan are: radial, forward curved and backward curved .
Radial fans are industrial workhorses because of their high static pressures (up to 1400 mmWC ) and ability to handle
heavily contaminated air streams. Because of their simple design,radial fans are well suited for high temperatures and medium blade tip speeds.

Fan and blower selection

Fan and blower selection depends on the volume flow rate, pressure, type of material handled, space limitations, and efficiency. Fan efficiencies differ from design to design and also by types. Typical ranges of fan efficiencies are given in Table 5.2. Fans fall into two general categories: centrifugal