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Understanding Energy Use Frank Rendina NYPD

Understanding Energy Use Frank Rendina NYPD. The Police Academy FY 2013FY 2014 FY 2012FY 2013 Jun-2013Jul-2013Aug-2013Jun-2012Jul-2012Aug-2012%Increase

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Page 1: Understanding Energy Use Frank Rendina NYPD. The Police Academy FY 2013FY 2014 FY 2012FY 2013 Jun-2013Jul-2013Aug-2013Jun-2012Jul-2012Aug-2012%Increase

Understanding Energy Use

Frank RendinaNYPD

Page 2: Understanding Energy Use Frank Rendina NYPD. The Police Academy FY 2013FY 2014 FY 2012FY 2013 Jun-2013Jul-2013Aug-2013Jun-2012Jul-2012Aug-2012%Increase

The Police Academy FY 2013 FY 2014

FY 2012 FY 2013

Jun-2013 Jul-2013 Aug-2013 Jun-2012 Jul-2012 Aug-2012 %Increase

June% Increase July

% Increase August

Electricity Cost ($)

$61,987.32 $74,456.47 $63,572.75 $68,647.81 $75,779.87 $61,224.27 -9.70% -1.75% 3.84%

Electricity Demand (KW)

1,020.24 1,057.20 949.20 1,020.24 1,078.08 1,028.88 0.00% -1.94% -7.74%

Electricity Usage (KWH)

421,600.00 530,000.00 486,000.00 446,400.00 486,400.00 478,800.00 -5.56% 8.96% 1.50%

Steam (mlbs) 107.00 79.00 143.00 76.00 58.00 67.00 40.79% 36.21% 113.43%

Steam Cost ($) $9,183.25 $9,202.01 $9,533.60 $7,449.88 $7,821.97 $7,419.64 23.27% 17.64% 28.49%

Total Cost ($) $71,170.57 $83,658.48 $73,106.35 $76,097.69 $83,601.84 $68,643.91 -6.47% 0.07% 6.50%

Total Usage (mmBTUs)

1,558.45 1,897.13 1,818.46 1,608.46 1,724.87 1,708.98 -3.11% 9.99% 6.41%

Page 3: Understanding Energy Use Frank Rendina NYPD. The Police Academy FY 2013FY 2014 FY 2012FY 2013 Jun-2013Jul-2013Aug-2013Jun-2012Jul-2012Aug-2012%Increase

Possible Causes

• Additional steam consuming equipment• Leaks in the steam lines• Leaky steam traps• Faulty equipment

Page 4: Understanding Energy Use Frank Rendina NYPD. The Police Academy FY 2013FY 2014 FY 2012FY 2013 Jun-2013Jul-2013Aug-2013Jun-2012Jul-2012Aug-2012%Increase

Typical Hourly Usage

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Steam Usage (Mlbs)

Steam Usage (Mlbs)

Page 5: Understanding Energy Use Frank Rendina NYPD. The Police Academy FY 2013FY 2014 FY 2012FY 2013 Jun-2013Jul-2013Aug-2013Jun-2012Jul-2012Aug-2012%Increase

Operating Characteristics of Facility

• Classes are held 18 hours/day• Facility has cadets, Traffic, School Safety and

civilian classes all through the day.• Classes end by midnight.

Page 6: Understanding Energy Use Frank Rendina NYPD. The Police Academy FY 2013FY 2014 FY 2012FY 2013 Jun-2013Jul-2013Aug-2013Jun-2012Jul-2012Aug-2012%Increase

The Showers

Page 7: Understanding Energy Use Frank Rendina NYPD. The Police Academy FY 2013FY 2014 FY 2012FY 2013 Jun-2013Jul-2013Aug-2013Jun-2012Jul-2012Aug-2012%Increase

Existing System

Page 8: Understanding Energy Use Frank Rendina NYPD. The Police Academy FY 2013FY 2014 FY 2012FY 2013 Jun-2013Jul-2013Aug-2013Jun-2012Jul-2012Aug-2012%Increase

The Solution

• Install low flow shower heads• Include individual isolation valves

Page 9: Understanding Energy Use Frank Rendina NYPD. The Police Academy FY 2013FY 2014 FY 2012FY 2013 Jun-2013Jul-2013Aug-2013Jun-2012Jul-2012Aug-2012%Increase

The Calculations• Typical flow = 3.5 gallons/min• Q= M C Delta T• Q for 1 faucet= 78,750 BTU/hr• Q for 55 faucets= 4,331,250 BTU/hr

• Typical flow = 5 gallons/min• Q= M C Delta T• Q for 1 faucet= 112,500 BTU/hr• Q for 10 faucets= 1,125,000 BTU/hr

Combined Q= 5,456,250 BTU/hr

Page 10: Understanding Energy Use Frank Rendina NYPD. The Police Academy FY 2013FY 2014 FY 2012FY 2013 Jun-2013Jul-2013Aug-2013Jun-2012Jul-2012Aug-2012%Increase

The Energy SavingsAssumption:15% the total number of showers are used during the day.

Potential Savings using 2.0 gpm shower heads only:56,953,125 BTU/Month

Potential Cost Savings for August:$4,422.90

Page 11: Understanding Energy Use Frank Rendina NYPD. The Police Academy FY 2013FY 2014 FY 2012FY 2013 Jun-2013Jul-2013Aug-2013Jun-2012Jul-2012Aug-2012%Increase

Lessons Learned

• Understand how the building is being used• Expect the unlikely• Exhaust all avenues• Have fun doing it

Page 12: Understanding Energy Use Frank Rendina NYPD. The Police Academy FY 2013FY 2014 FY 2012FY 2013 Jun-2013Jul-2013Aug-2013Jun-2012Jul-2012Aug-2012%Increase

Questions