Specifications

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The subsystem that controls new air flow into the building is required to control
four dampers in the ducts of the HVAC system, and is required to be controlled
wirelessly. These four dampers will control airflow through the ducts depending
on user controlled settings via the touch screen. If a dehumidification unit is not
integrated into the existing HVAC system at the time the Efficient HVAC Control
and Feedback System is installed, it must also be controlled wirelessly.
Section 6: Conclusion and Summary
The overall writing procedure included research of all topics of the system,
designing schematics and block diagrams, and describing how to accomplish all
required software and hardware features for our Efficient HVAC Control and
Feedback System. The first task was gaining an understanding of conventional
HVAC systems and once we acquired this knowledge we were able to implement
those fundamental concepts into the design, build, and testing procedures
associated with the Efficient HVAC Control and Feedback System. Our group‟s
primary focus was to take an existing HVAC system that is installed in every
residential and commercial building and creatively expand on it in a way that
would make the system more functional and efficient for both residential and
commercial applications.
The Efficient HVAC Control and Feedback System allows the user to control both
temperature and relative humidity levels inside a building. The user has the
ability to control the system through an LCD touch screen inside the building, or
remotely by accessing a web server through any Internet capable mobile device.
The web server and LCD touch screen are also updated with real time
temperature and relative humidity levels so the user can monitor current
conditions inside their building either from inside the building or at a remote
location.
Along with the ability to control temperature and relative humidity levels, the
Efficient HVAC Control and Feedback System has a function for introducing fresh
air into the building. This function is unique to our system and has never been
implemented into an HVAC control system. Traditional HVAC systems
recirculate the inside air when cooling or heating the building. Bringing in outside
air using the HVAC system has several benefits such as better health, more
comfort, less housework, money savings, and better security. An air exchange
provides a cleaner interior by removing indoor air contaminants such as smoke,
dust, germs, gases, mold spores and odors and replacing it with filtered, outdoor
air. The air exchange part of the system can be set to run either on a schedule,
or only when the outdoor air conditions are favorable to cool or heat the building
in order to save energy.
Energy savings is another key feature of the Efficient HVAC Control and
Feedback System. By allowing the user to set the relative humidity level along
with temperature, the air conditioner is not always required to be started when
the inside conditions are not ideal. The system has multiple settings to allow the
user to select between “max comfort” and “max savings”. Choosing a level