GEOTHERMAL CONVERSION

In the summer of 2009 my wife and I purchased a home in a small community outside Boulder, Colorado named Niwot. Niwot was named after a 19th century Arapaho Indian chief by that name. It means “left hand”. Consequently, there are a lot of local “left hand” this and “left hand” that. However, fortunately, you […]

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COLD ROOM SYNDROME

It seems that there is always one room in a house that is coldest in the winter and warmest in the summer. I know – I had that room for a while as a child. Airflow is “self-balancing” in all air handling distribution systems. That is not to say that the proper amount of airflow […]

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THERMOSTATS – ON or AUTO?

Most thermostats utilized in commercial applications include one or more operating functions. They all can control to a heating or cooling setpoint, or both. Some thermostats include manual changeover from heating to cooling and visa-versa, and some have a setting which will permit the thermostat to determine if heating or cooling operation is necessary. Most […]

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HVAC Engineering versus HVAC Design

I was recently asked to consider the difference between “Engineering” and “Design”. The following represents my thoughts about this important comparison. State of Colorado Definitions of Engineering The licensing requirements for professional engineers are defined by statute in each State. In Colorado, Statute 12-25-114 defines the minimum requirements for registration as a Professional Engineer. This […]

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HVAC Engineering Firm Staff Members and Basic Responsibilities

The following represents a typical small engineering firm team make-up and associated responsibilities. There are likely to be more tasks required of each position than listed below. The various duties listed are possible, but not inclusive.   Principal – This person usually is the company owner and principal engineer. He is responsible for all aspects […]

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Plumbing: Sanitary Vent Systems

Horizontal Offset of Sanitary Vents Below Flood Rim Elevation David Olson, PE I did my first building code plan review in 1991, a grocery store in Brighton, Colorado. I worked as a sub-consultant to an architect who had a good relationship with the local building official. I took on the project with a little anxiety, […]

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