Tech Briefs Magazine - February 2022 - MD-2

Designing Smart Solutions for
Gas Flow Devices
D
uring the 20th
century, the
energy landscape
in India was dominated
by fossil fuels, with diesel, petroleum,
and kerosene used
for most industrial and domestic
purposes. In rural India,
a large part of the population
was still using coal, wood, or dung
fires for cooking. However, the last few
decades have seen the country strive to
become a more gas-based economy, with
widespread use of liquefied petroleum
gas (LPG) and compressed natural gas
(CNG) for cooking and even transportation.
Recently, piped natural gas has
also been made available to many urban
households, providing the comfort of
uninterrupted cooking gas directly to
consumer homes. This new development
calls for the gas utility providers
to measure how much gas is being
consumed. How? With the help of gas
meters.
2
A gas
meter is a
specialized flowmeter used in residential,
commercial, and industrial buildings
to measure the amount of fuel
gases, such as CNG or LPG, delivered
through a pipeline. Gases are highly
compressible, which makes them more
difficult to measure than liquids because
of their sensitivity to changes in temperature
and pressure. Gas meters measure
a defined volume, regardless of the
pressurized quantity or quality of
the gas flowing through the
meter. Accordingly, adjustments
need to be made in
temperature, pressure, and
heating values to accurately
measure the actual amount of
gas moving through the meter.
Several different designs of gas
meters are common, depending
on the volumetric flow rate of
gas to be measured, the range
of flows anticipated, the type of gas
being measured, and other factors.
Some of the major types of gas meters
include diaphragm meters, rotary
displacement meters, turbine meters,
ultrasonic flowmeters, and Coriolis
meters.
Raychem RPG is one of the leading
providers of domestic gas meters
in India. At the Raychem Innovation
Centre (RIC) in Gujarat, India, researchers
developed four new designs
for gas flowmeters, which were concepMotion
Design, February 2022
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Tech Briefs Magazine - February 2022

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