HVAC system has revolutionized the whole concept of heating and cooling - PowerPoint PPT Presentation

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HVAC system has revolutionized the whole concept of heating and cooling

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After the digital boom, use of computers and electronic gadgets has increased drastically in companies, commercial zones and in households. – PowerPoint PPT presentation

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Title: HVAC system has revolutionized the whole concept of heating and cooling


1
HVAC system has revolutionized the whole concept
of heating and cooling After the digital boom,
use of computers and electronic gadgets has
increased drastically in companies, commercial
zones and in households. With this
trend, the need of heating and cooling
via air conditioning has also been on a
rise. Every physical hardwire device
requires an environment of regulated heat
and humidity. Hence HVAC systems have been
introduced which regulate the heat,
ventilation and air conditioning.
Importance of HVAC systems HVAC systews p?iwa?y
?o?k is to p?oide the?wal cowfo?t. AdditioYally
it waiYtaiYs the ai? ?uality of the building by
controlling the air flow. They have become very
popular in the last decade with large industries
and office buildings opting for them. They
have become common in hospitals, ships and
submarines. Single family homes and
apartments are also opting for HVAC
for premium comfort. Ventilation is a key
factor in regulating moisture, smoke, odor and
heat in these buildings. The air is
periodically replaced to ensure sufficient
amount of oxygen is being provided inside
and temperature is optimal. It also includes the
task of circulation of air inside the
buildings. How HVAC system works
2
For air conditioning to work optimally, the
windows of the buildings should be closed. The
conditioning system maintains the temperature and
humidity inside the building. Fresh air is drawn
in by a vent from the outside and circulated
inside the building to create a positive air
pressure. The refrigeration of the air is ensured
by removing heat through radiation and
convection. Refrigerants like water and ice is
used in a heat pump and circulated all over for
cooling purpose. The compressor of the system
pumps the refrigerants to high pressure. Then the
gas enters a heat exchanger where is loses all
the heat and the cool liquid is spread in the
building with the help of an expansion valve.
After sometime, when the refrigerant starts to
acquire heat, it is again absorbed by an
evaporator which again returns it to the
compressor after minimizing the heat. This is
called the refrigeration cycle which every air
conditioning device uses. Types of cooling
systems Two types of cooling systems are
currently available in the market. Type 1 -
Central Air conditioning Central air
conditioning systems which are also called
package systems which come with a condenser unit
have become very popular in North America. But
they have one downside. Bulky air ducts make them
difficult to install. Hence all over the world
bar North America, use of split system has become
famous. Type 2 Split Air Conditioning Split
systems employ separate indoor and outdoor coils.
UYlike package systews, they doYt duct ai?
directly from the outdoor system. Split systems
connect the evaporator coil with a remote
condenser unit via a refrigerant pipe. Hence they
are way more efficient than package systems.
However, package systems tend to have lower
indoor noise levels. Proper maintenance of the
system is essential Air conditioning units
need to be maintained periodically for
optimal performance. The internal air filters
need to be replaced over time else they can lead
to lower heat exchange which will in turn cause
higher energy bills. Similarly, we should be
careful about cleaning the condenser as unclean
condenser can affect the compressor. Article
Source http//www.balticmaster.org/2017/11/hvac-s
ystem-has-revolutionized-whole.html
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