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Energy Savings Opportunities in Controls, Lighting, Air Conditioning, Water Heating and Refrigeration. Chuck Thomas, P.E. CEM Lead Engineer. Benefits of Energy Conservation. Savings add directly to bottom line Reduced emissions Reduced effluent Conserves resources Reduced maintenance

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Energy savings opportunities in controls lighting air conditioning water heating and refrigeration l.jpg

Energy Savings Opportunities in Controls, Lighting, Air Conditioning, Water Heating and Refrigeration

Chuck Thomas, P.E. CEM

Lead Engineer


Benefits of energy conservation l.jpg
Benefits of Energy Conservation Conditioning, Water Heating and Refrigeration

  • Savings add directly to bottom line

  • Reduced emissions

  • Reduced effluent

  • Conserves resources

  • Reduced maintenance

  • Improved comfort

  • Provides bragging rights


First step define your baseline l.jpg
First Step - Define your Baseline Conditioning, Water Heating and Refrigeration

  • Perform an Energy Survey

    • Graph utility usage verses weather and occupancy

    • Review utility rates

    • Benchmark your facility verses similar facilities

    • Lighting

    • Water/sewer & water heating

    • Heating and cooling

    • Evaluate controls


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Usage and Billing Data Conditioning, Water Heating and Refrigeration

  • Graph usage

    • Electric kWh, kW, $, average $/kWh

    • Fuel usage, $, $/therm

    • Water/sewer usage, $, $/Ccf or 1,000 gallons

  • Cost per square foot

  • Cost per occupied room

  • Cost per meal

  • Usage verses weather data


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Energy Usage Conditioning, Water Heating and Refrigeration


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Hi-rise Hotel Energy Segments Conditioning, Water Heating and Refrigeration

12 Story - 665 Rooms

20% to 35% common area usage


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Typical Lodging Electric Usage Conditioning, Water Heating and Refrigeration


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Typical Room Conditioning, Water Heating and RefrigerationElectricEnergy Usage per year


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Annual Hotel Electric Bill per Room Conditioning, Water Heating and Refrigeration

11 Orlando Hotels - Properties were from 141 rooms to 1,020 rooms

Large Convention Ctr

4 Restaurants + 750 rooms

$0.80 to $4.52 per room per night

246 rooms

141 rooms

245 rooms

Small Convention Ctr

+ 1,020 rooms


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Rates Conditioning, Water Heating and Refrigeration

  • Understand the terms

    • Demand, energy, power factor, load factor, hours of use, ratchets, kVAr, kVA, Ccf, therms, etc

  • What are your options

    • Varies with utility and usage

  • Calculate bill under rate options


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Lighting Audit Conditioning, Water Heating and Refrigeration

  • Determine cost per room per month & day

    • Represents 20-30% of electric billing

    • 30-40% savings potential in lighting

      • T8’s - up to 40% savings (more light than 34 watt)

      • Compacts - up to 75% savings and longer life

      • LED exit signs - up to 90 % savings and longer life

    • Savings in A/C

      • Less heat to remove

  • Maintain lighting foot-candles at IES standards


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Water/Sewer & Water Heating Conditioning, Water Heating and Refrigeration

  • Determine cost per room per month & day

    • Check for and repair leaks

    • Deduct meters on cooling tower make-up

    • Low gallon per flush toilets

    • Lower gpm shower heads

      • Customer acceptable models

    • Efficient water heaters

    • Insulated piping

    • Consider heat recovery from refrigeration, A/C


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Heating & Cooling Conditioning, Water Heating and Refrigeration

  • Unoccupied room usage

    • temperature set back - 30% savings of HVAC

  • Window treatments

    • Films, low Summer Heat Gain Coefficient SHGC windows, awnings, sun screens

    • Drapery use - 30% savings of HVAC if used

  • Replace with high SEER, HSPF

  • Book rooms with lowest HVAC cost first

    • Lowest solar exposure - summer

    • Lowest envelope exposure - winter


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Refrigeration Conditioning, Water Heating and Refrigeration

  • Estimate operating cost

  • Check

    • temperature settings

    • seals, door alignment

    • coil condition

    • location of condensers

    • defrost controls

  • Replace with high efficiency systems

  • Run only what is necessary


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Controls Conditioning, Water Heating and Refrigeration

  • Check for proper operation

    • note complaints

  • Training of personnel

    • temperature settings

    • draperies

  • Consider Energy Management Systems

    • Documents usage

    • Documents operation

    • Automates controls

  • Establish Energy Awareness Campaign


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Energy Awareness Campaign Conditioning, Water Heating and Refrigeration

  • Shows management commitment

  • Reward system for each departments participation in meeting goals

    • Recognition for enthusiastic support

    • Dinner coupons or room night coupons for leadership role in meeting goals

    • Department with highest savings rewarded

  • Internal newsletter needs to highlight progress towards goals

  • Financial backing for low-cost fast payback projects


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Energy Awareness Campaign: Conditioning, Water Heating and Refrigeration

  • Select attainable goals

    • Based on energy audit and benchmarking

  • Reduce average kWh monthly usage by X% (compared to last year, weather neutralized)

  • Reduce average gallons of water monthly usage by y% (compared to last year)

  • Reduce average Gas monthly usage by z% (compared to last year)


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Review Conditioning, Water Heating and Refrigeration

  • Understand your usage

  • Look for changes

  • Keep up on maintenance

  • Install high efficient lighting, water heating and HVAC systems

  • Reduce water usage

  • Insure proper controls and operation

  • Establish an Energy Awareness Program


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Summary - Conditioning, Water Heating and RefrigerationSignificant benefits are possible by implementing conservation programs

  • Show them the money

  • Document the other savings

    • Reduced emissions

    • Reduced effluent

    • Conserved water, fuel

    • Reduced maintenance

    • Improved comfort

  • Brag


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