Author Archives: Jim Shiminski
Custom Air Handling Unit Design | The ECM Fan Array
Submission by Guest BloggerPaul Hanbury - Sr. Mechanical Project ManagerDPS Biometics - Framingham, MA The Electronically Commutated Motor, or ECM, has infiltrated the small fan market. The technology gained ground several decades ago, mostly with small scale process applications and … Continue reading
Posted in Air Handling Units
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Energy Recovery Unit | Separate Control Panel Option
Separate Control Panel Option This is clever and a really nice feature that can be added to any Energy Recovery Unit (ERU) or Air Handling Unit (AHU). Just needs to be specified. I am not sure why we didn’t think … Continue reading
Posted in Heat Recovery Units
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Project Snapshot: Wellesley College | Field Erected Air Handling Unit
Project Name: Whitin Observatory Renovation Owner: Wellesley College Architect: designLAB architects Mechanical Engineer: Fitzemeyer & Tocci General Contractor: Shawmut Design & Construction Mechanical Contractor: E.M. Duggan Equipment: Indoor ERU in 4 sections Manufacturer: Annexair Size: 2,400 CFM OA DAC Sales … Continue reading
Posted in Field Erected Units, Project Snapshots
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Ask Rick: Glycol Run Around Loops | What is a typical face velocity for a pumped glycol system?
Q. What is a typical face velocity for a pumped glycol system like Konvekta? A. Konvekta pumped glycol energy recovery coils work anywhere in the range from 50-1000 FPM face velocity. It’s typical for coils to be sized between 350 … Continue reading
Posted in Ask Rick, Pumped Glycol Systems
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Ask Rick: Lab Exhaust Fans | Vibration Isolation for Strobic Air Tri-Stack Fans
Q. We are recommending high plume dilution lab exhaust fans from Strobic Air for a project. What would you recommend for vibration isolation? A. Strobic Air recommends that the Tri-Stack Fan be mounted on a 1½” wide strip of … Continue reading
Posted in Ask Rick, High Plume Dilution Fans
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Ask Rick: Energy Recovery Wheel | Question on ANSI/ASHRAE Standard 62.1-2010
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
Posted in Ask Rick, Energy Wheels
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Project Snapshot: Field Erected Heat Pipe System
Project Name: East Boston Stadium HVAC Improvements Engineer: Engineered Systems, Inc. Contractor: P.J. Kennedy and Sons Equipment: Passive Heat Pipe Energy Recovery Module Manufacturer: Heat Pipe Technology DAC Sales Engineer: David Goodman Project Highlights: Existing Conditions: Football is a proud … Continue reading
Heat Pipe for HVAC Systems | Heat Pipe Theory
Heat Pipe for HVAC Systems | Heat Pipe Theory This is a quick overview of how a Heat Pipe works in an HVAC system. More specific information can be found in free webinars from Heat Pipe Technology. Further questions on … Continue reading
Posted in Energy Recovery, Heat Pipes
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Custom Air Handling Unit Design | Desaturation Cooling Coil
1. What is a Desaturation Cooling Coil? A Desaturation Cooling Coil (Desat Coil) really functions like two separate coils. It combines the aspects of a cooling coil and a reheat coil to cool, dehumidify and reheat the air. The Desat … Continue reading
Posted in Air Handling Units
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Ask Rick: Glycol Run Around Loops | Why do we not use Ethylene Glycol in the USA?
Q. Why do we not use Ethylene Glycol in the USA? A. Great Question. We use pumped glycol energy recovery systems all the time here in the United States. Up until recently we have almost exclusively used Propylene Glycol. Ethylene … Continue reading
Posted in Ask Rick, Pumped Glycol Systems
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