Advanced Evaporative Pre-Cooling Texas Energy Managers Association
Jerry “Chance” Burden Evaportech Services, LLC 35+ Years Commercial HVAC Mechanical contractor (2 nd generation) • • Commercial HVAC & Plumbing services contractor • Sheet metal fabrication and installation contractor • Carrier Gulf Coast Operations Mgr & Area Sales Mgr Tx & Ok
Jerry “Chance” Burden Industry Leader • Past Pres Mechanical Contractors Assoc • Board Member Tx Plumbing Edu. Council • Industry boards & committees Evaportech Services, LLC • Exclusive Evaporcool Rep (Tx & Ok) • Manufacture's Authorized and Preferred installation contractor • Approved TIPS vendor
In 2011, the Texas Legislature Senate Bill 898 passed Senate Bill 898 amending the Health and Safety Code §388.005 to PROBLEM require each political subdivision, institution of higher education, or Reduce electrical state agency to establish a goal to consumption reduce electrical consumption by at least five percent each fiscal year for ten years beginning September 1, at least 5% 2011. Each entity must report to the State Energy Conservation Office (SECO) regarding the entity’s efforts to meet the goal, and progress the for 10 years entity has made.
Inefficient Buildings (Schools) Costs Profits vs. Efficient Buildings (Schools) Costs Profits
Energy efficiency conserves resources Energy efficiencies are common BUT ☛ & affordable
AIR CONDITIONING consumes the most Energy (40%) and few AFFORDABLE solutions exist to DRAMATICALLY improve efficiency
Solution There now...wasn’t that simple?
R EVOLUTION Frescoes circa 2500 B.C. show Evaporative “swamp cooler ” slaves fanning jars of water to circa 1935 cool rooms for royalty
Evaporative Cooling Technology Relies on two principles: 1. Water molecules absorb the heat of evaporation, causing surrounding airstream to cool 2. The cooler air has more capacity to absorb heat
Evaporative Cooling Technology How do evaporative pre-coolers work? • Same principle as traditional direct evaporative coolers, sometimes called “swamp coolers” • Pre- coolers don’t add humidity to the air within the conditioned space like evaporative coolers since the evaporative effect is on the outside of the a/c unit
Evaporative Cooling Technology What do evaporative pre-coolers do? • Boost effectiveness of air-cooled A/C equipment by reducing the effective air temp surrounding condenser coils • Because air temp lowers ~20 ° , the condensing section releases more heat to the outside and the refrigerant cycle can work more effectively
Evaporative Cooling Technology REVOLUTION $ + Rebates = Efficiency avings
Evaporative Condenser Pre-Cooling 20° temperature drop reduces compressor & condenser-fan energy usage by 15% - 30%
saving 22% on average
Evaporative Condenser Pre-Cooling Reduces Increases • Energy usage • Tonnage capability • Peak demand $ • System reliability • Head pressure • Maintenance Extends Protects Equipment life Coils from dust, debris & damage
The Texas P.U.C. APPROVED a petition on 12/14/17 filed by the major utility providers in Texas – Oncor, CenterPoint, Entergy, SEP, TNMP, etc. for “Deemed Savings Calculations” for 5 energy efficiency methodologies, including: 3 residential items 1 commercial plumbing item The 5 th methodology requested & approved was for New nonresidential condenser air evaporative precooling measures
System Considerations System Brands Pros A B C D Performance monitoring system / controls X X X Water frequency regulating system X X X Water treatment system X X X Low maintenance X X X Cons Intrusive installation X Sump pump, standing water, drainage issues X Adds humidity to indoor air X X X Sprays directly on coils X X X THICK filter media (fans work harder) X X
Revolutionary Technology Non-Invasive System • Attaches with magnets • Requires no recirculation or drain systems Computerized Controller • Monitors external temp in real-time • Provides real time energy savings data • Sprays precise water, only inside frame • Minimizes water usage
Revolutionary Technology • Micro mist / flash evaporization • Eliminates water on coils & roof • Filters dirt away from coils • Digital controls / cloud access • Bacnet compatibility * Air- pressure drop thru the filter media is minimal < 1/10” wc
Sample Installation
Installation Before After
Water Piping Schematic
Performance Monitoring Advantages • Quickly confirms operational status of system • Graphically illustrates real-time energy savings • Monitors & checks cooling or refrigeration system condenser performance • Proactively spots trends that may indicate system performance or maintenance issues Points Monitored Ambient dry bulb temp • Ambient relative humidity • Ambient wet bulb temp* • Ambient dew point* • Compressor power • • Condenser inlet air temp Condenser liquid line temp • System spray percentage • *Point is calculated from other measured sensors 24
Water Conservation New evaporative cooling tech- nology reduces demand and consumption of electricity while SAVING water in the community it serves
Can range 10-25 gallons Depending on type per kWh created of power plant National Averages “Electricity production National Renewable consumes 20+ gallons Energy Lab per kWh created”
Peak Demand Savings (%) Savings are a function of climate, utility rates & utility incentives
Texas Utility
Join the OEMs Revolution Large End Users
Jerry “Chance” Burden EvaporTech Services, LLC 800.898.0013 Chance.Burden@EvaporTech.com www.evaportech.com www.evaporcool.com
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