Category Archives: Energy Wheels

Project Snapshot | Energy Recovery Unit – Tuck School at Dartmouth College

Posted on December 18, 2012 by Jim Shiminski

Project Name:     Whittemore Hall Owner:     Tuck School of Business at Dartmouth College Project Application:     Dormitory for Tuck Students Mechanical Engineer:     BR+A Equipment:     Energy Recovery Unit Manufacturer:     Annexair Size:     15,000 CFM   Whittemore Hall … Continue reading →

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Project Snapshot | Energy Recovery Wheels For Hospitals

Posted on October 3, 2012 by Jim Shiminski

Walter Reed National Military Medical Center                     Project Overview Project Name: Walter Reed National Military Medical Center Location: Bethesda, Md. Floor area: 515,000-square-foot ambulatory care building; 162,000-square-foot hospital addition; 450,000-square-foot hospital … Continue reading →

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Energy Recovery Wheel | Purge Section

Posted on September 27, 2012 by Jim Shiminski

There are two ways that air can leak from the exhaust side to the supply side of a wheel: Cross-Flow Leakage – occurs when air leaks from the exhaust side to the supply side through the seals or any gaps … Continue reading →

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Energy Recovery Wheels | Understanding Cross Contamination / Leakage

Posted on June 6, 2012 by Jim Shiminski

In many applications it is important to limit the cross contamination (leakage) from the exhaust to the supply side of an energy recovery wheel.  In some applications, like laboratories, it’s critical.  In other applications, like schools, it’s not a big … Continue reading →

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Ask Rick: Energy Recovery Wheel | Question on ANSI/ASHRAE Standard 62.1-2010

Posted on April 30, 2012 by Jim Shiminski

Q.  It appears that the ANSI/ASHRAE Standard 62.1-2010 restricts the use of wheels for lab use.  Is this the correct interpretation?   A.  As it stands ANSI/ASHRAE Standard 62.1-2010 is not clear on the question of Class 4 exhaust (which … Continue reading →

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Ask Rick: Energy Recovery Wheels on Laboratory Fume Hood Exhaust?

Posted on February 24, 2012 by Rick McGinley

Q.  I am working on a laboratory system.  I have several fume hoods and general lab exhaust.  I need to incorporate energy recovery.  Can I use an energy recovery wheel for this application?   A.  We have done a significant … Continue reading →

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Ask Rick: Should I use a bypass damper on an Energy Recovery Wheel?

Posted on February 13, 2012 by Rick McGinley

Q.  Should I use a bypass damper on an Energy Recovery Wheel? A.  We typically use a bypass damper around a energy recovery device for frost control and economizer.  That is typical for Heat Pipes and plate exchangers.  In the … Continue reading →

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Ask Rick: How much cross contamination occurs with an Energy Recovery Wheel?

Posted on February 7, 2012 by Rick McGinley

Q.  How much cross contamination occurs with the use of an Energy Recovery Wheel?  Does exhaust air get mixed back into the supply air stream? A. Cross contamination refers to the amount of air that is leaked from one side … Continue reading →

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Project Snapshot: Lab Exhaust Energy Recovery Systems | Mass General Hospital CNY149

Posted on January 26, 2012 by Jim Shiminski

Project Name: Mass General Hospital CNY149 Architects: Chan Krieger NBBJ Engineer: Thompson Consultants Inc. Contractor: JC Cannistraro Inc. Manufacturer: Air Enterprises, Thermotech, Strobic Air Size: 320,000 CFM Lab Energy Recovery Unit DAC Contact: Rick McGinley   Project Overview: Mass General … Continue reading →

Posted in Air Handling Units, Energy Wheels, High Plume Dilution Fans, Project Snapshots | 1 Comment

Ask Rick: Energy Recovery Wheels | Wheel off for Economizer?

Posted on January 21, 2012 by Rick McGinley

Q.  Is it ok to turn an energy recovery wheel off for economizer purposes? A.  No,  we do not recommend that.  If an energy recovery wheel is stopped it’s flutes can clog if filters are not maintained properly. The wheel … Continue reading →

Posted in Ask Rick, Energy Recovery, Energy Wheels, Show | 1 Comment