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Fastrack - May 12, 2010

May 24, 2010
Large-Campus District Cooling

May 12, 2010


Large-Campus District Cooling
By KEVIN M. KURETICH, PE; The University of Texas at Austin; Austin, Texas; and BEN ERPELDING, PE, CEM; Optimum Energy LLC; San Diego, Calif.

In 2000, The University of Texas at Austin (UT) was paying about $2 per million British thermal units of natural gas, its primary fuel. By September 2006, the cost had risen to more than $14; over the next two to three years, it averaged about $8. In less than a decade, UT's annual gas budget had gone from about $9 million to approximately $36 million. At the same time, the UT campus was experiencing significant growth. Over the span of 15 years, the area served by UT's combined-heat-and-power district energy plant had grown from approximately 13 million sq ft to nearly 20 million sq ft (Figure 1). Looking to meet its growing cooling needs using less power, UT recently embarked on a district-cooling-optimization project that has seen gas-use quantities return to 1970s levels. [MORE]





Buildings Compete to Work Off Waste

In a contest sponsored by the U.S. Environmental Protection Agency (EPA), 14 commercial buildings from across the country are competing to see which can shed the most energy waste on a percentage basis. [MORE]

NFPA Announces Upgrade to National Fire Codes Subscription Service

The National Fire Protection Association (NFPA) has made upgrades to its National Fire Codes Subscription Service (NFCSS) to make it easier for professionals to get up to code. [MORE]




ASHRAE Guideline Addresses Interactions Affecting IEQ

A proposed American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) guideline, currently out for public comment, would provide guidance on achieving good indoor environments by considering the interactions of air quality and thermal conditions, as well as lighting and acoustics. [MORE]

March Heating-and-Cooling-Equipment Shipment Data Released

According to the Air-Conditioning, Heating, and Refrigeration Institute (AHRI), March brought commercial gas water heaters a 4-percent increase in U.S. shipments, up from 8,119 units in March 2009 to 8,476 units in March 2010; however, shipments of electric water heaters dropped 4 percent to 5,698 units in March 2010, down from 5,909 units in March 2009. Year-to-date U.S. shipments of commercial gas water heaters increased 3 percent to 21,997 units in March 2010, up from 21,349 units in March 2009. Year-to-date U.S. shipments of commercial electric water heaters decreased 7 percent to 14,157 units in March 2010, compared with 15,200 units in March 2009. [MORE]

Techlit Online – Products, Design Tools, and White Papers

Cottonwood Filter Screens & Hail Guards
· Compatible with all makes & Models
· Mesh Screen Specifically Developed For Use on HVAC Equipment - Includes Quick Release Fasteners.
· Nearly Invisible to Air Flow.
· Non-Stick Surface Cleanable With a Broom, Brush, Shop Vac, Garden Hose, Even Rain Will Rinse Them Clean.
· Doesn’t Require Removal for Cleaning.
· Reduces Cleaning Maintenance time & effort by up to 70%
· Helps Reduce Energy Cost
· Earn LEED Credits
· Service Life Up To 15 Years
—Air Solution Company

BAULIN-TUBE® Room Pressure Monitor
Airflow Direction’s BAULIN-TUBE® Room Pressure Monitor offers a simple way to show your room is operating properly.

Airflow Direction Incorporated
Toll Free: 888-334-4545
email: [email protected]

Environmentally Responsible Piping Brochure
“Aquatherm and Environmental Responsibility” details the environmental friendliness of the 35-plus-year-old company’s polypropylene-random (PP-R) piping for potable, HVAC, industrial, and grey water systems (and its heat fusion process). Access a pipe comparison matrix and sections on hydronics; flow rates; insulation; and recycled/reclaimed water; and learn how you and your customers can benefit from environmentally responsible piping.
Available via
—Aquatherm, Inc.

Bard Over/Under 13 SEER Packaged Units
The Bard unique over and under 13 SEER Packaged Heat Pumps and Air Conditioners are ideal for retrofit applications and eliminate the need for costly field modifications. Features include R-410A refrigerant, ECM blower motor, high and low pressure switches, and top discharge outdoor fan. Electrical components and controls are readily accessible through side panel for ease of service.
—Bard Manufacturing Co.

BITZER Compact Screw Compressors deliver market-leading full and part-load efficiencies for your A/C and Chiller applications and a shorter pay-back period than the competition. BITZER screws range from 30 to 320 HP.

BITZER R410A Scroll Compressors are offered in 15 - 40 ton capacities. Features include lower sound, lighter weight and lower oil circulation rates than competitor models. Our Boreal model provides best in class full and part load efficiencies at low condensing temperatures.


Compact Desiccant Dehumidifiers
Now with two new sizes MP 900 cfm and MP 1200 cfm
Bry-Air adds two larger sizes to its already popular line of compact desiccant dehumidifiers. Bry-Air’s MiniPAC is the ideal dehumidification solution for facilities in need of reliable humidity control. It can operate alone to control humidity in one room or it can attach to your existing heating and cooling system to control humidity in your entire building. Now in six sizes: 100 cfm, 175 cfm, 350 cfm, 600 cfm, 900 cfm and 1200 cfm.
—Bry-Air Inc.

Power Venter for Boilers & Water Heaters
EXHAUSTO’s IPVB Power Venter is the ultimate mechanical draft solution for commercial boilers and water heaters. The unique design makes installation easy and truly in-line in the chimney system.
Contact us for cost and savings estimates. It’s never too early to start saving! For more information call (800) 255-2923.

Fantech Expands Commercial Fan Division
Fantech, Inc. now offers a complete line of Commercial Ventilation products that are ideal for industrial, institutional and other commercial applications. The new Fantech Commercial Fan catalog features over 140 pages of products such as Power Roof Ventilators, Wall Fans and Air Circulators. Fan sizes from 50 cfm to 76,000 cfm. For a copy of the catalog, email [email protected] or call 1-800-747-1762.
—Fantech, Inc.

Flow Calculations for Design and Process Engineers
No need to guess. No need to struggle through laborious calculations. No need to hunt for reference books. Just flick the dial. The answers to almost all design problems involving the flow of gases, fluids, and steam are now at your fingertips when you use Hunter flow calculators. Thousands of these precision instruments are in daily use in top companies and government agencies throughout the world. Visit Hunter’s Website at or e-mail [email protected].
—Hunter Products Inc.

System-10 BTU Meters – BAS and Protocol Compatible
ONICON’s System-10 BTU Meters communicate directly over:
· BACnet® IP
· BACnet® MS/TP
· JCI – Metasys®
· Siemens – Apogee®
resulting in improved accuracy and reliability.

Ph. 727-447-6140

Video Presentation – Chiller Energy Savings for Energy Managers
The Oil-Acid-Moisture Purger regains chiller capacity and saves thousands of dollars per year in energy savings due to oil migration during chiller operation. Energy Managers take advantage of opportunities for Utilities Rebates, LEED & Green Buildings points, tax rebates. Contractors, Facility Managers & Energy Managers can maximize savings while working to save energy and being Green! Video presentation at
—Redi Controls, Inc.

Shortridge’s Airdata Multimeter
The AirData Multimeter is a handheld, electronic, digital readout meter that offers precision in the measurement of air flow, velocity, pressure and temperature with automatic correction for local air density. Meter features automatic measurement mode, sequential storage and recall, sum and average, and English and metric units. It is NIST traceable.
—Shortridge Instruments Inc.

Shortridge’s Electronic Flowhood CFM-88
The new electronic FlowHood gives fast, accurate, direct digital readout of density-corrected airflow measurements. It reads 25 to 2500 cfm, supply or exhaust, and is available in either cfm or liters per sec. It comes complete with five top sizes and a carrying case. It is NIST traceable.
—Shortridge Instruments Inc.

2-Stage High Intensity Infra-Red Heaters
Solaronics’ energy efficient “SunTwin” 2-Stage high intensity gas-fired infra-red heaters eliminate excess heat when not needed and are capable of faster recovery times when temperatures fall. Fuel savings of 40-75% over conventional warm air type heaters can be achieved. Applications include loading docks, airplane hangars, warehouses, and manufacturing facilities. 6 models available to heat any size building.
—Solaronics, Inc.

New Economical Rooftop Draft Inducers
RT-Series rooftop inducers for gas, oil, solid fuel & general ventilation keep the entire vent system under a negative pressure. Speed adjustability fine tunes performance, self-cleaning backward inclined impeller repels soot build-up and patented auxiliary cooling system protects motor from excessive heat. Suitable for metal or tile flues. Gas & oil models include a fan proving switch – speed control optional. Solid fuel models include a speed control.
—Tjernlund Products, Inc.

Enhance Performance of Ductless Heating/Cooling, PTAC & Stoves/Fireplaces
Ultra quiet, AireShare™ Room-to-Room & Level-to-Level ventilators transfer heated/cooled air through interior walls/floors to uncomfortable rooms. Move air to rooms that are not directly served by ductless heating/cooling, split system, PTAC & window A/C units. Great for electric baseboard, stoves & fireplaces. Move air up or down for application flexibility. Destratify stagnant air & improve ventilation rates inside home for greater comfort. Hardwire and Plug-in versions.
—Tjernlund Products, Inc.

Triple-Flex™ Ultra-High Efficiency Boilers Bryan Triple-Flex™ (patent pending) Ultra-High Efficiency Condensing Boilers feature flexible stainless steel tubes, minimum thermal efficiency of 90% with 160° return, 180° supply at 100% firing load. Efficiencies of 99% are achievable with lower return water temperatures as found in new building designs. Triple-Flex boilers fire at 3,000 MBH input, with sub 30 PPM NOx utilizing a hybrid metal fiber 5:1 turndown burner. Triple-Flex boilers are suited to deliver the industry's highest operating efficiencies up to 99% in new buildings designed for condensing boiler conditions and better than 90% efficiency in retrofit applications not designed for condensing boilers. Steam LLC


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