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Monthly Archives: February 2012
Custom Air Handling Units | 5 Reasons to use Custom Air Handling Units
Custom Air Handling Units (AHU’s) Here’s a look at why engineers and owners choose to use them. Quality: Custom Air Handling Units are built to last longer. They have significantly better fit and finish. Units fabricated from all aluminum bases … Continue reading →
Energy Saving VAV Diffusers | 6 Options for Building Automation Systems
We have worked with Variable Air Volume (VAV) Diffusers from Acutherm for 20 years now (they have been around since 1978). In the start there was one option; a stand alone Thermally Powered VAV Diffuser. It was called the Therma-Fuser. … Continue reading →
Ask Rick: Energy Recovery Wheels on Laboratory Fume Hood Exhaust?
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 →
Ask Rick: High Performance Fume Hoods | Are Pass Thru Fume Hoods considered High Performance Hoods?
Q. Are pass thru fume hoods considered ‘High Performance Hoods’? A. Pass Thru Fume Hoods are not high performance hoods. Under good conditions, with one sash open between 12” and 18”, the hoods can contain at lower velocities. But, … Continue reading →
Project Snapshot: Lawrence Memorial Hospital | Custom Air Handling Unit
Project Highlights: Constraints: The existing air handling units in the mechanical room that served the hospital and OR suites had exceeded their useful life and needed to be replaced. The hospital could not shut down operations for a retrofit of … Continue reading →
Ask Rick: What is adiabatic humidification?
Q. What is adiabatic humidification? A. There are two basic ways to introduce moisture into air: Isothermal Humidification - the water vapor is dispersed in the air after having been created by boiling water. Isothermal humidification requires an external source … Continue reading →
Ask Rick: Should I use a bypass damper on an Energy Recovery Wheel?
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 →
Steam Humidification | Energy Efficient – Short Absorption Steam Humidification
Carel introduces ultimateSAM a new energy-efficient steam dispersion system “SAM” – Short Absorption Module Energy efficiency: Insulated models are standard, minimizing heat gain and condensate formation. Short not-wetting distance: Minimized steam absorption distance thanks to uniform distribution along the entire … Continue reading →
High Plume Dilution Fans | 3 Key Design Questions
There are three key design questions that we ask when designing every High Plume Dilution Fan application. They are the basic questions that determine every design choice down the line. They will be asked at some point, so better to … Continue reading →
Project Snapshot: WCCC UMass Data Center | Custom Air Handling Units
Project Highlights: Two Electronically Commutated Motor (ECM) fan array units. Each array consists of (12) 7.5 HP ECMs, with backwards curved fans, that can deliver 83,000 CFM at 2.5” w.c. The two arrays combined deliver a total of 166,000 … Continue reading →
