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2 ENERGY VS EFFICIENCY Bob Witt CPD

8/27/ Introduction WHAT IS A BTU? LEARN WHEN YOU CAN ACHIEVE HIGH EFFICIENCIES LEARN WHAT IS REQUIRED IN YOUR DESIGN TO REACH THESE GOALS

8/27/ Agenda REVIEW BASICS OF ENERGY 10min TIME LINE OF EVENTS 15 min WATER CONDITIONS 10min “BAD HABITS” TOUGHT NOT LEARNED a lifetime HIGH MASS CARRY-OVER TO LOW MASS DESIGN 10 min SUMMARY PART 1 15 min

8/27/ OVERVIEW ENERGY IS GENERIC AND WILL PERFORM AS PHYSICS WORK WITH THE BASICS TO ENHANCE YOUR DESIGN point rise >T dew H2OH2O btu

8/27/ VOCABULARY BTU THERMAL LIFT T TEMPERATURE RISE WHERE DOES HIGH EFFICIENCY COME FROM? “LATENT HEAT” WHAT IS LATENT HEAT?

8/27/ TERMS EXOTHERMIC T CO 2 H 2 0 CONDENSATE NOX SOX DEW POINTS DESIGN TEMPERATURE

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9 TIME LINE MOM & POP JIMMY CARTER UNCLE SAM CODES AND STANDARDS AIR QUALITY GO GREEN VENT CATEGORIES BAD HABITS

8/27/ TIME LINE TOPICS DATE CATEGORY EFFICIENCY STACK TEMPERATURE RETURN WATER TEMP DEW POINTS OPERATING TEMPERATURE CODES BAD HABITS

8/27/ Understanding ANSI Standards II IIII IV NegativePositive NFGCAirtight Corrosion Resistant Non-condensing CondensingVENTING Static Pressure in Vent Above Dew Point Below Dew Point 130 deg F

Effect of Inlet Water Temperature to Boiler Efficiency inlet water temperature boiler efficiency, % condensing boiler condensing boiler non-condensing boiler dew point natural gas = 1050 Btu/ft 3 80

8/27/ CSA TO TEST ALL CAT IV ALL CATEGORY IV EQUIPMENT TO BE TESTED AT FULL INPUT AT 180° NEW A/Q REGULATIONS TO 9 ppm CO 2 AS OF 2012

8/27/ BAD HABITS JUST BY THE WAY IT IS PLUMBED IT MAY OR MAY NOT WORK NON-CONDENSING CONDENSING CROSSED SYSTEMS

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8/27/ SPECIFY FACTORY START-UP AS BUILT PERFORMANCE DOES IT MEET THE REQUIREMENT? DOES MATERIAL MATCH SPEC? DO T’s MATCH DESIGN PERMANENT RECORD

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8/27/ VALUE ENGINEERING IDENTICAL PRODUCT IDENTICAL VALUE IDENTICAL PERFORMANCE IDENTICAL APPEARANCE PERFORMANCE VALUE IS EQUAL TO PREFORMANCE IS BETTER THAN

8/27/ SUMMARY PART I HIGH EFFICIENCY COMES FROM? THE DEW POINT IS? LIME DROPS OUT & ?

8/27/ BREAK TIME END OF PART ONE

8/27/ TECHNOLOGY BURNER HEAT EXCHANGER CONTROLS

8/27/ CONDENSING TECHNOLOGY INSIDE THE COMBUSTION CHAMBER OUTSIDE THE COMBUSTION CHAMBER

8/27/ BURNERS ATMOSPHERIC FAN ASSISTED GUN PULSE FeCrAlY DIRECT CONTACT

8/27/ COMBUSTION TECHNOLOGY ATMOSPHERIC FAN ASSISTED GUN PULSE SYMETRIC AIR- FUEL COUPLING

8/27/ Air/Fuel Coupling gasvalve gas P G = P A PAPAPAPA PGPGPGPG air

8/27/ WATER HEATER PROBLEMS TRADITIONALLY ON/OFF WATER QUALITY OPERATING BELOW THE DEW POINT SCALING REPLACEMENT MASS

8/27/ Pounds of Lime Deposited vs.... Temperature and Water Usage 180 o F 170 o F 160 o F 150 o F 140 o F 120 o F

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8/27/ HEAT EXCHANGERS TANK SPIRAL HELICAL COIL HELICAL FIRE TUBE flex vs. non-flex DIRECT CONTACT ss wool COPPER INDIRECT

8/27/ SCALE PREVENTION PASSIVE VS ACTIVE SCALE PREVENTION PASSIVE VS ACTIVE Tank heaters Spiral Helical flue tube Helical fire tube Direct contact Electric Wall hung Indirect Copper Tube

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8/27/ CONTROLS ON OFF MODULATION CLAMPING HEAT- BANDS NIGHT SET BACKS NETWORKS EMS

8/27/ LOW TEMP SYSTEMS POTABLE WATER 110° 130°

8/27/ DISEASES LEGIONELLA E-COLI SALMONELLA HERPES AIDS

8/27/ SIZING WITHOUT VARIABLES units x time x flow x T x H 2 O x oc x inv/eff duration = instantaneous btuh requirement

8/27/ DEFINITIONS OF FORMULA # OF UNITS hotel rooms apts cells etc TIME in the shower VOLUME of the flow device T of the thermal lift H 2 O the weight of water OCCUPANCY # of people in each unit INVERSE of the efficiency of the product DIVIDED by the duration hours to deliver EQUALS the instantaneous demand

8/27/ REAL NUMBERS 250 X 5 X 3 X 60 X 8.33 X 1.5 X 115% = 2,156,000 BTUH

8/27/ EQUIPMENT SELECTION ONE 2,200,000 BTU HEATER ONE 250 GALLON TANK

8/27/ A BETTER SELECTION NEVER USE ONLY ONE HEATER SPLIT THE LOAD 2,256,000/2 = 2 – 1,128,000’s 75% x 2,256,000 = 1,692,000 x 2 80/20 x 2,256,000 = 1-1,800, ,k

8/27/ WHAT ABOUT STORAGRE THUMB RULE 100 gal storage for every 1M input REDUCE input 100K for every 100 gals of storage on hand 2/3 max

8/27/ HYBRID SYSTEMS WHAT IS IT? A BOILER OR WATER HEATER SYSTEM THAT USES CONDENSING AND NON- CONDENSING EQUIPMENT IN THE SAME APPLICATION TO OPTIMIZE SYSTEM EFFICIENCY AND CAPITAL

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8/27/ HOW TO GO GREEN SAVE WATER LOW NOX WISE PURCHASE OF EQUIPMENT HYBRID SYSTEMS NIGHT SET BACKS PREVENTATIVE MAINTENENCE

8/27/ SUMMARY WHERE DOES HIGH EFFICIENCY COME FROM? ENERGY TRAPPED IN FLUE GAS AS WATER VAPOR WHEN DO YOU ACHIEVE HIGH EFFICIENCY IN YOUR DESIGN OPERATING BELOW THE DEW POINT WEIGH THE CONDENSATE HYBRID SYSTEMS

8/27/ Where to Get More Information READ THE MANUALS READ THE GRAPHS UNDERSTAND THE PHYSICS WHAT ARE YOU TRYING TO DO? CONSULT YOUR REPRESENTATIVE

8/27/ THANK YOU THANK YOU