The Challenge
With the introductions of new curriculums and courses, facilities and classrooms are being used more, which means electricity expenses are also increasing.
As a result, the university has adopted Ministry of Energy policies to reduce energy consumption, particularly of tall buildings, to accomplish two goals:
1. Reduce the total Demand Cost of each tall building by 10%.
2. Maximize electrical efficiency by using technology to control electricity consumption.
The Method
This project relies on advanced technology to assess the energy efficiency of each building. First, the energy consumption rate is measured via a “Power Meter” which collects data that is assessed by the “Energy Management Program”. If the electricity consumption rate exceeds a set limit, building air conditioners will be partially shut down.
The project has been divided into two phases:
1. Phase 1 (2009): Energy management equipment that control air conditioning were installed in the Mahamakut Building, Thaep Nilanithi Building and Boromrajakumari Building.
2. Phase 2 (2014): Energy management equipment was installed in buildings at the Faculty of Engineering, Faculty of Architecture, Faculty of Commerce and Accountancy, Faculty of Economics and Faculty of Science.
The university also instituted the following rules and measures to reduce the energy consumption:
1. All lights must be turned off before leaving a room for lunch or a long period.
2. Persons must avoid turning on all lights if not necessary.
3. Eqipment must be unpluged when not in use.
4. Computers and monitors must be shut off when all tasks are finished.
5. Air conditioning should only operate between 8.00-16.30.
6. Air conditioning thermostats should be set at 26 Celsius to save energy.
7. Small air conditioneing units should be turned off during lunch for 1 hour.
8. Air conditioning compressors should be turned off during lunch.
9. Stairs whould be used when going up or down one floor.
10. Elevators should be deactivated when there are not many users.
11. At least one person should be assigned to manage each sector’s electricity usage according to this policy.
The following measures were instituted to reduce water consumption of tall buildings:
1. Use water sparingly.
2. Ensure all water taps are turned off after use.
4. If any water system leaks or is damaged or leaked, it should be reported and fixed immediately.
5. Water buckets should be used to wash cars instead of hoses.
Energy Management Devices Installation
The LED lights are turned on sparingly.
The Result
According to the data collected from the Power Meter and energy management equipment, 60% of the university’s average electricity bill is derived from air conditioning systems. Thus, shutting off air conditioningwhen not needed has contributed greatly to reducing energy consumption of each building by 10%, which , thus, reduces the univertsity’s overall Demand Charge.
Next Step
Due to the positive results, energy management technology will be installed in more buildings in the next fiscal years. Periodic maintenance of equipment must also be performed to maintain the consistent positive results.
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