Q. You have mentioned that traditional pumped glycol energy recovery systems were your least favorite choice for air-to-air energy recovery. What are the reasons for that? A. It starts with efficiencies. Pumped Glycol systems in this country, until the recent introduction of Konvekta, have provided the lowest efficiencies for all choices. The best we could… Read more »
Posts By: Jim Shiminski
Project Snapshot: High Plume Dilution Fans | Odor Control
Project Type: Regional Paper Company Project Application: Odor Remediation Equipment: High Plume Dilution Fan Size: 10,000 CFM at 2.5″ SP Manufacturer: Strobic Air DAC Sales Engineer: David Goodman Project Highlights: The Problem: One of the neighbors on the hill above the paper manufacturing plant claimed to be smelling the chemicals being exhausted from the… Read more »
Energy Recovery Wheels | Understanding Cross Contamination / Leakage
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 concern. There are two ways that air can leak from the exhaust side to the… Read more »
Ask Rick: Control for Wrap Around Heat Pipes
Ask Rick Question: I am considering putting in a wrap around heat pipe to reduce cooling tonnage and provide reheat. Is there a way that I can control the heat pipe to reduce reheat? The Wrap Around Heat Pipe (or Dehumidification Heat Pipe) is used in lots of applications where reheat is typically used. … Read more »
Project Snapshot: UNH Parsons Hall | Lab Exhaust Fan – Energy Recovery Units
Project Name: University of New Hampshire Parsons Hall Renovation Architect: Einhorn Yaffee Prescott Mechanical Engineer: Einhorn Yaffee Prescott Contractor: Gilbane Building Company Equipment: High Plume Dilution Fan – Energy Recovery Systems Manufacturer: Strobic Air / Cambridgeport Air Systems Size: 5 Ea. Energy Recovery Units – sized from 20,000 CFM to 48,000 CFM DAC Sales… Read more »
Ask Rick: Air to Air Energy Recovery | How to size the energy recovery device?
Q. I am working on an Air-To-Air Energy Recovery application. I am thinking of using a wheel or a heat pipe. I need to know which will fit. How do you size the energy recovery device for the application? A. There are a variety of energy recovery devices to use for a given application. … Read more »
High Plume Dilution Lab Exhaust Fan | Mixed Flow Fan Curve
Lab Exhaust Fan | Mixed Flow Fan Curve Review Many High Plume Dilution Fans used for Lab Exhaust are mixed flow type fans. The Mixed Flow Fan Curve is different from traditional centrifugal fan curves. For one, it doesn’t have a stall point. It can be completely starved of air and still remain in stable… Read more »
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 residential air conditions. More recently the ECM fan has made a huge impact with fan… Read more »
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 of it. We saw this during a recent visit to Annexair. They can now include… Read more »
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 Engineer: David Goodman Project Highlights: History: The Whitin Observatory is the home of the… Read more »