BQS 554

49 MECHANICAL VENTILATION
AND AIR-CONDITIONING

BENEFITS OF
DEMAND CONTROL

SYSTEM

For instance, breathing and human activity in the kitchen
or shower might result in greater relative humidity, which
can cause damaging condensation where mould can
grow. Humidity sensitive exhaust devices instantly open to
remove excess moisture and prevent condensation when
the relative humidity rises dangerously.

Demand controlled ventilation systems are a major factor in
the improvement of indoor air quality. A major room's
relative humidity rises when it is inhabited, which causes the
air inlets to open more to improve airflow and better remove
stale air. The opening of the exhaust units increases with the
relative humidity, boosting the airflow and hastening the
removal of polluting air. Water vapours emissions are a
natural consequence of activity in wet areas (kitchen,
bathroom, toilet, etc.).

DCVs are made to be effective in a variety of ways beyond
energy use. Your maintenance expenses will go down as a
result, and the systems' lifespan will be extended. If you are
using Traditional system, it is not only using a lot of energy,
but they also cost more to maintain.

The DCV functions in a unique and advantageous way that is
intelligent and automated. Depending on the outside
temperature or the season of the year, air is chilled or
heated. Then it is brought inside the space to automatically
adjust the temperature. The occupants are unaffected by
the increased air flow because a room air sensor is present.
Compared to conventional ventilation, this automated
sequence of activities uses a very small amount of power to
operate. As a result, the air ducts of the DCV system are
resistant to clogging.

50 MECHANICAL VENTILATION
AND AIR-CONDITIONING

PROBLEM
ENCOUNTERED AND
THE SOLUTIONS

24

Problem Placement of Solution Air supply vents shouldn't be placed next
the Vent to places where pollution is generated,
such as exhaust vents, busy streets, and
trash bins. Analyse each air supply vent's
placement with careful.

Problem Scheduling Solution Scheduling ventilation systems is essential to
ventilation preserving optimum interior air quality.
operation Depending on the number of participants or
the time of day, schedule ventilation
operations. Utilizing carbon dioxide sensors for
demand control ventilation can improve
indoor air quality while reducing energy use.

Problem Improper Solution ·Verify that the system can be used
Installation of immediately after installation.
the systems ·All applicable building codes and
standards must be observed during
installation.

51 MECHANICAL VENTILATION
AND AIR-CONDITIONING

BUILDING

REGULATION

Approved Document F offers instructions on how to adhere to ventilation-
specific building requirements. It indicates that sufficient ventilation must be
supplied to prevent an excessive build-up of moisture that could seriously
damage the property's construction. Furthermore, it guarantees that air may
freely circulate throughout the building, maintaining excellent indoor air quality.
Furthermore, it guarantees that air may freely circulate throughout the
building, maintaining excellent indoor air quality.

Developing regulations governing the installation, inspection, testing,
commissioning, and dissemination of information for fixed ventilation systems
in both new and existing structures must be followed when building a new
property. How to adhere to these building requirements is explained in the
approved document.

Because it combines cross ventilation, buoyancy (warm air rising), and the
venture effects, passive stack ventilation (PSV) is the most effective natural
ventilation approach (wind passing over the terminals creating suction). Every
new room in a home should have sufficient ventilation for reasons of general
health. The quantity of ventilation needed depends on the type of space.

· When installing a new internal wall, care should be taken not to exacerbate
any existing problems, such as inadequate ventilation. If a new room is
created as a result of an internal wall addition, care should also be taken to
ensure that the existing room is adequately ventilated. The following are the
general rules for ventilating a room Purge- this can be accomplished by
opening a window. Unless it is a bathroom, the opening should have a typical
area of at least 1/20th of the floor area of the room served.

52

24

7.0 CONCLUSION

53

CONCLUSION

In short, in the past having a smart home was a desire to look beautiful
and sophisticated by having smart technology at home. However, for the
next 5-10 years smart home is important to be installed in residential
homes as well as buildings. This is because having a smart home gives
many advantages to homeowners. It is very efficient because by simply
pressing a button or controlling it from a mobile application we can
control various facilities that are at home. For instance, from anywhere in
your home you would be able to control your heating and cooling as well
as turn on and off lights with a single click. This is not only efficient, but it
can also save electricity consumption.

Moreover, the level of security will increase because smart technology
such as smart locks and closed-circuit television can be monitored from
your smartphones. Thus, we can take precautions if anything suspicious
happens like someone trying to access our property. the application of
this technology can also contribute to the reduction of building bills. This
is because the homeowner can monitor most technologies such as on/off
the light and there are also sensors that can detect the presence of
people in an area, and it will automatically off if there are no people in
the place.

Nowadays, technology is advancing, and the use of smart buildings will be
a necessity as it provides many advantages to the owners of such
buildings. it also has a lot to do with daily routines that can facilitate all
day-to-day management.

54 REFERENCES

8.0 REFERENCES

55 REFERENCES

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Leland Soh (2016), Laws of Malaysia; Uniform Building By-Laws, Retrieved from
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Thank
You