Texas Energy Managers Association Jerry Chance Burden Evaportech - - PowerPoint PPT Presentation

Advanced Evaporative Pre-Cooling

Texas Energy Managers Association

Jerry “Chance” Burden Evaportech Services, LLC

35+ Years Commercial HVAC

• Mechanical contractor (2nd 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 passed Senate Bill 898 amending the Health and Safety Code §388.005 to require each political subdivision, institution of higher education, or state agency to establish a goal to reduce electrical consumption by at least five percent each fiscal year for ten years beginning September 1,

• 2011. Each entity must report to the

State Energy Conservation Office (SECO) regarding the entity’s efforts to meet the goal, and progress the entity has made.

Senate Bill 898 Reduce electrical consumption at least 5% for 10 years

PROBLEM

Inefficient Buildings (Schools) Costs Profits Efficient Buildings (Schools) Costs Profits

vs.

Energy efficiency conserves resources Energy efficiencies are common & affordable

BUT ☛

AIR CONDITIONING consumes the most Energy (40%) and few AFFORDABLE solutions exist to DRAMATICALLY improve efficiency

Solution

There now...wasn’t that simple?

EVOLUTION

R

Frescoes circa 2500 B.C. show slaves fanning jars of water to cool rooms for royalty

Evaporative “swamp cooler” circa 1935

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

Evaporative Cooling Technology REVOLUTION

Efficiency

avings

$

+ Rebates =

Evaporative Condenser Pre-Cooling

20° temperature drop reduces compressor & condenser-fan energy usage by

15% - 30%

saving

22%

• n

average

Evaporative Condenser Pre-Cooling Reduces

• Energy usage
• Peak demand $
• Head pressure
• Maintenance

Increases

• Tonnage capability
• System reliability

Protects

Coils from dust, debris & damage

Extends

Equipment life

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 5th methodology requested & approved was for

New nonresidential condenser air evaporative precooling measures

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

System Considerations

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

Points Monitored 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

*Point is calculated from other measured sensors

Performance Monitoring

24

• 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

New evaporative cooling tech- nology reduces demand and consumption of electricity while SAVING water in the community it serves

Water Conservation

National Averages Can range 10-25 gallons per kWh created Depending on type

• f power plant

“Electricity production consumes 20+ gallons per kWh created” National Renewable Energy Lab

Peak Demand Savings (%)

Savings are a function of climate, utility rates & utility incentives

Texas Utility

Join the Revolution

Large End Users OEMs

Jerry “Chance” Burden EvaporTech Services, LLC 800.898.0013

Chance.Burden@EvaporTech.com

www.evaportech.com www.evaporcool.com