School walk-around energy checklist Use this walk around checklist to help identify key low or no cost energy saving opportunities within your school. Conducting regular housekeeping walk-arounds will help form the basis of an action plan to reduce your energy use. Energy Efficiency Checklist
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Actions/Comments
Check temperature setpoints (optimum settings are 20° C for heating in winter and 24° C for cooling in summer).
Can a dead band be set around the temperature setpoint? Do staff know how to control the air conditioning? Do they override the controls? Why? Are temperature sensors located in areas that will accurately represent the room's temperature (i.e. Not blocked by furniture or next to entry ways)? Are any empty areas being air conditioned? Where can timers, occupancy sensors or open-window detectors be linked to the air conditioning?
An Insiders Guide to Australian School Management
Issue 2
Maintenance Paying Off Variable Repair Costs Slashed
If a centralised air conditioning system is used, does it use an outdoor air economy cycle, variable-speed drives or timers and controllers?
Ursula Frayne Catholic College, Perth’s 113 year old, dual campus private school, has effectively slashed ad hoc repair costs and lost time due to equipment failure.
Ensure that time controls take account of unoccupied periods so that heating and cooling does not operate when there is no one around. Are the air conditioning system controls set to minimise preheat times?
According to the College’s Business Manager, Jody Cabalzar, the cost and time savings are significant but did not come as a surprise.
Are any air conditioning units past their end of life? 7-10 years for a room unit up to 10 kW, or 10-15 years for a packaged air conditioning unit 10kW to 100kW. If so, investigations should be made into upgrading these.
Where applicable check that controls such as weather compensation, optimisation and seven day time control are set correctly to save energy and money.
Is a maintenance schedule followed for cleaning and replacing filters, and inspecting ducts and pipework for signs of damage or wear and tear? If a centralised air conditioning system is used, is the supply and return ductwork and pipework insulated? Source: Adapted from Carbon Trust (UK) and Office of Environment & Heritage (NSW).
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When Jody joined the college five years ago, he invited air conditioning specialist AE Smith to tender for a formal repair and maintenance contract on the basis of the company’s outstanding performance at his two previous schools. “When I started here, the air conditioning program was more reactive than preventative,” Jody said. “Plus, a lot of the equipment was nearing the end of its useful life and running at far from optimum efficiency. “Once AE Smith won the contract we went through the place, carrying out a stock take of all equipment and developing an action priority plan as part of putting in place the maintenance agreement. Continued page 3