May 28, 2011

Case Study for the SRA: City Library

Split Air to Air System at a City Library

The City of Mountain View is located in the San Francisco Bay Area and has a population of about 75,000 persons. The City has an aggressive goal to reduce its energy consumption.
Realizing that the electricity used for air conditioning represents a large portion of its total electricity usage, the City engaged Power Knot to help reduce the consumption of energy.

The City asked Power Knot to monitor and treat an air conditioning system that performed badly in hot weather. This is a system that cools the power room at the City library. Power Knot treated the system with its Synthetic Refrigerant Additive. [In the past, Power Knot referred to the product as the Synthetic Refrigerant Catalyst; the term Additive is now preferred.]

Power Knot monitored the system for a month before and after treatment and showed that by treating the system with its Synthetic Refrigerant Additive that it had increased the energy efficiency of the system by over 20%.

This A/C system was made by Compu-Aire:

This is a photo of the Mountain View Public Library.

After treatment, we measured an average reduction in power of 5%.

After treatment, the room was much cooler. The air conditioning system was doing more work than before treatment. The increase in work being done was over 15% as measured by the enthalpy.

Of interest to the City was what happens to the room temperature after we had treated it. We analyzed the room temperature on the coldest and hottest days after we treated the system.

The system held the temperature in the room, with just a very minor change in the room temperature.

The net effect is an improvement in energy efficiency of over 20% and the ability to keep the room cool even in hot weather.

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