Ebtron

Airflow Measurements for HVAC Systems – Technology Comparison

The proper selection of airflow measurement devices can be critical to the performance of today’s state-of-the-art HVAC system. Many of the requirements and limitations of one technology are often mistakenly thought to apply to every other. Not all technologies result in equal performance, even when used under similar conditions. Accuracy and repeatability vary between technologies and are most dramatically influenced by installation location, airflow rates, and required system turndown.

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CO2 Based Demand Controlled Ventilation
Do the Risks Outweigh the Rewards?

Today’s HVAC designs emphasize energy conservation. Unfortunately, design strategies often loose focus on other core objectives which include occupant health, productivity and the long term integrity of the building structure. The widespread use of CO2 demand controlled ventilation is a widely used strategy that has sacrificed many of our core objectives in the name of “conservation”.

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Outside Air Intake Flow Control
Designing for ASHRAE 62.1-2004, LEED and Risk Management

Changes in LEED guidelines and ASHRAE Standard 62 have reinforced the concept of direct monitoring of outside air intake flow rates for continuous control. Unfortunately, recent trade journal publications are full of misconceived and misguided information for the consulting engineer, which often trivializes the importance of direct outside air flow monitoring and control.

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Using Your HVAC System to Improve IAQ

In a joint 2000 report, Lawrence Berkley National Laboratory and the U.S. Department of Energy estimated that improving indoor air quality would yield up to $208 billion annually through decreased health care costs and improved productivity. The really good news is that these savings can be achieved with minimal investment and with technology that is readily available.

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