RESPONSIBLE BUSINESS RESPONSIBLE BUSINESS ROTORUA AQUATIC CENTRE ROTORUA AQUATIC CENTRE
Active Energy Management & Savings The Rotorua Aquatic Centre is a community facility owned and operated by Rotorua District Council. A unique feature of the complex is that all heating of the pool water, hot water and complex is provided through geothermal energy. This provides a considerable financial benefit in that there are little or no heating costs incurred. Energy Balance by Load Type (kWhrs/year) 2% Pumping 8% There are however Ventalation energy costs for Lighting pumping, ventilation Misc (running of the air 33% 57% handlers) and lighting
Active Energy Management At the end of 2005 an energy audit was undertaken by Power Solutions Ltd which identified energy savings initiatives 98% of all the energy savings initiatives have now been implemented Last year (08/09) resulted in an Energy reduction of 138,718 kW (equivalent to 1.5 month total energy out of every 12 months) Total Cost Savings Equivalent = $56,000 (with annual ongoing savings of $45,000)
Energy Savings Rotorua Aquatic Centre Rotorua Aquatic Centre Energy Savings Simple Switch off Campaign target of 2% saving $2,820.00 Summary of Energy Saving Opportunities < 3.0 years Estimated Estimated Simple Opportunity Annual Item No. Invest ($) Payback (yrs) Savings ($) Reduce Pump Speed at night and control level $17,314 $28,590 1.65 1 Splash Pad Pump back to auto control $230 $200 0.87 2 Shut down domestic hot water pump at night $58 $180 3.00 3 Ensure Pool Hall fans go to slow speed at night $22,237 $300 Done 4 Shut down Amenities / Change extract fans at night $70 $180 2.57 5 Shut Air Handler 3 down at night $1,832 $180 0.10 6 Control Pool Hall lights on daylight sensor $1,069 $2,000 1.90 7 Main Entry Canopy Lights on daylight control $356 $180 0.50 8 Cardio Gym lights on occupanct sensor $130 $180 1.40 9 1st Floor lights on occupancy / light sensor $99 $180 1.80 10 Staff Room lights on occupancy / light sensor $199 $180 0.90 11 Staff Changing Rooms lights on Dashpot Control $248 $100 0.40 12 Main Plant room lights replace and occupancy sensor $794 $620 0.80 13 Main Plant room Metering Room light $33 $73 2.30 14 Outdoor Plant room Metering Room light $137 $125 0.90 15 Splash Pad Plant room lights on occupancy sensor $173 $180 1.00 16 $44,979 $33,448 Total Savings < 3 year Simple Pay Back
Energy Savings – – Rotorua Aquatic Centre Rotorua Aquatic Centre Energy Savings Reduction in Energy 08/09 = 138,718 kW (equivalent 1.5 month) Calculated Total Cost Savings Equivalent = $56,000 (with annual savings $45k) Energy kWh Used Comparison between years from 2004/2005 - 2005/2006 - 2006/2007 - 2007/2008 - 2008/2009 140,000 130,000 120,000 2004 / 2005 kWh Useage 2005 / 2006 110,000 2006 / 2007 2007 / 2008 2008 / 2009 100,000 90,000 80,000 Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Months
Energy Savings – – Rotorua Aquatic Centre Rotorua Aquatic Centre Energy Savings Accumulative Energy Costs Comparisons excluding gst Year to Year from 2004/2005 - 2005/2006 - 2006/2007 - 2007/2008 - 2008/2009 $180,000.00 $170,000.00 $160,000.00 $150,000.00 $140,000.00 $130,000.00 $120,000.00 $110,000.00 $100,000.00 2004 / 2005 Dollars $90,000.00 2005 / 2006 $80,000.00 2006 / 2007 $70,000.00 2007 / 2008 $60,000.00 2008 / 2009 $50,000.00 $40,000.00 $30,000.00 $20,000.00 $10,000.00 $0.00 Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Months
Interesting Facts The energy consumed by a centrifugal pump (or fan) is calculated by a pump cube law that states that the energy used has a cube relationship with speed. Therefore at reduced speed such as 50% or 0.5 full speed, the energy consumed by the pump is 0.5 x 0.5 x 0.5 = 0.125 or 12.5% providing an 87.5% reduction in energy. Likewise even a 10% speed reduction to 0.9 full speed gives nearly a 30% reduction in energy consumption. This law applies to your main pool pumps and the Air Handler fans indicating the benefit of using variable speed drives to regulate speed. Source: Kevin McGrath Energy Engineer
What Can You do Right Now? What Can You do Right Now? Step 1 : Step 1 : Start Tracking Energy Use Start Tracking Energy Use Collate past 24 months + energy use & costs Collate past 24 months + energy use & costs Record & Measure energy consumption Record & Measure energy consumption Analyse & identify variances (explore opportunities) & identify variances (explore opportunities) Analyse Compare with similar facilities (benchmark) Compare with similar facilities (benchmark) Step 2 : Step 2 : Set Realistic Energy Targets Set Realistic Energy Targets Expect savings of 5 Expect savings of 5- -25% annual energy expenditure 25% annual energy expenditure Suggest 15% target savings is realistic & achievable Suggest 15% target savings is realistic & achievable Undergo an Energy Audit Undergo an Energy Audit Identify & p Identify & p rioritise energy saving initiatives rioritise energy saving initiatives Implement initiatives Implement initiatives Involve Your Staff Involve Your Staff Step 3 : Step 3 : Monitor and Control Energy Progress Monitor and Control Energy Progress Compare Energy results regularly Compare Energy results regularly Report and action any variances Report and action any variances Provide on- -going feedback on progress going feedback on progress Provide on
Additional Contact Information Additional Contact Information Kate Alcock Account Manager – Business Energy Efficiency & Conservation Authority (EECA) Level 4, Guildford House, 2 Emily Place, Auckland 1010 PO Box 37 444, Parnell, Auckland 1151 E: kate.alcock@eeca.govt.nz Tel: 09 374 3805 F: 09 374 3809 M: 027 600 7808 To Do List To Do List FUNDING: http://www.eeca.co.nz/eeca-programmes-and-funding/funding M & T GUIDE: http://www.eecabusiness.govt.nz/sites/all/files/monitoring-and- targetting-guide-08.pdf CROWN http://www.eecabusiness.govt.nz/services-and-funding/crown-loans LOANS:
Trade Waste & H20 Trends Trade Waste & H20 Trends 10yr overview 10yr overview Rotorua Aquatic Centre Trade Waste Rotorua Aquatic Centre Water by Meter 60,000 35,000 30,000 50,000 25,000 40,000 Dollars Dollars 20,000 30,000 15,000 20,000 10,000 10,000 5,000 0 0 2003/04 2004/05 2005/06 2006/07 2007/08 2008/09 2009/10 1999/00* 2000/01* 2001/02* 2002/03* 1999/00* 2000/01* 2001/02* 2002/03* 2003/04 2004/05 2005/06 2006/07 2007/08 2008/09 2009/10 Year Year • Approx same trade waste & water by meter year to year • Increasing costs for dumping & buying water in
Water Efficiencies & Conservation Water Efficiencies & Conservation Trade Waste & Water by Meter Saving $12,194 Quarterly ( May – Jul yr to yr ) Cubic Meter Variance 54% 1,164 m3 Forecasted Annual Reduction 09/10 yr 24% 2,392 m3 ($5,789) Trade Waste Comparison May - Jul 08 vs May - Jul 09 3000 2500 Cubic Meteres (m3) 2000 1500 1000 500 May - Jul 08 May - Jul 09 0 May Jun Jul Months Source: RAC Operations Log
Sustainability Accreditation • The Centre joined the Rotorua Sustainable Tourism Charter in April 2008. A Preliminary Sustainability Assessment was conducted and audited with a Sustainability Assessor from APR Consultants. • Over 85% of all the initiatives identified have now been implemented • The drive was to contribute to being a responsible business with good business practices and ensuring sustainability and environmental responsibility. It also contributes towards protecting, and preserving the environment for our future generations, by reducing the impact of our operations on the environment
Sustainability Accreditation The Rotorua Aquatic Centre certified by Qualmark, as an Endorsed Visitor Activity and rated at an Enviro Silver Accreditation. The Enviro Silver Qualmark stamp means the Rotorua Aquatic Centre has enhanced environmental criteria (called Responsible Tourism Operations) and involves considering the ’three r’s ‘ in everything that is done: Reduce, Reuse and Recycle It also includes five key areas that are part of Qualmark’s Responsible Tourism initiatives: Energy Management Waste Management Water Conservation Conservation Community
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