Smart Card Based Energy Control for High Schools
Students, teachers and parents agree that air conditioning the
classroom is a good way to increase the conduciveness of the study
environment for better student performance. But the increased
electricity cost and the associated management problems is an
impediment to its adoption.
Not only is the basic electricity cost affected by this, but the
increased energy often exceed the demand limit and cause even greater
grief because of the substantial penalties involved.
Not only in classrooms, but the desire to install air conditioning in
the offices, activity center and gyms as well only exacerbate the
How would one implement prepaid smart card metering for
regular and dedicated classrooms?
Students buy the cards at the student rate and can use these card in
both types of classrooms, and the tariff is charged as pay per use.
What kind of air conditioners can be used?
Whether split type or box type, single phase or three phase, there is a
models that is just right for the given situation, please consult one
of our technical specialist for details.
How to choose the right meter?
One can't go wrong using a meter that has been certified by national
standards authority. When the classroom doesn't already have a meter
pre-installed then the certified meter should be used.
How does one determine the tariff rate and the card
That would be determined by the adminstration, typically each kWh is
tariffed at a rate of 4.0 to 6.0. Often this rate has some
profit built in, which would be enough to compensate for the over
demand during the summer months. Whether each card is set at 2000 or
3000 is up to the school. There should at least be 200 cards, these
cards can be custom printed with the school logo and each card can have
a unique serial number.
How does one add value once the credits has been used up?
Each school would have their own value adding machine that is not
interchangeable with others, insuring its security.
How about flexibility in use?
- Students staying for class can use a separate non-classroom
tariff rate card.
- During the summer and holiday breaks, they may use the
non-classroom tariff rate card.
- When the classroom is rented out for community class use,
one can charge a much higher tariff rate.
- When the students gather as a group after class, they may
use a card with a special rate.
- Specially for meeting rooms, audio-visual rooms, music
rooms and gyms; one may prepare cards with much higher tariff rates
(which cover lighting and airconditiong) to compensate for the deficit
in the electricity budget. During the day, the school may use a card
with a special rate. When the card is not made available then it can
also be made to achieve the same end as a means to control usage.
The school also needs a demand response solution, do you
The meters used for the smart card metering may also be used with the
demand response controller to provide load shedding to avoid the