Consulting-Specifying Engineer - August 2008 - (Page 43) for optimizing building efficiency are all that are really required. Many commissioning providers started out as designers, contractors, or technicians themselves. It is that background that forms the foundation for their expertise. Make a point of meeting the commissioning provider working on your project. The experience will be helpful for both of you and may even push you to explore a career in commissioning. Sellers’ background includes more than 30 years of experience with commissioning, design engineering, facilities engineering, mechanical and control system contracting, and project engineering in a wide array of facilities. Sellers also provides technical training and develops technical guidelines on retro-commissioning and commissioning field techniques and engineering fundamentals in a number of venues. He is a member of Consulting-Specifying Engineer’s editorial advisory board. Qualifying the analysis The following factors lent even more credibility to our work: ● The load was based on measured data from the building while in actual operation and was grounded in that reality. ● The existing boiler capacity was able to warm the building up and then perform below peak delivery to hold comfort conditions. In other words, the steady state load on the facility appeared to be significantly less than the peak capacity available from the proposed equipment. ● The gas consumption pattern, which represents the energy into the boiler, correlated with the load pattern and indicated that the boiler efficiency was somewhere in the range of 44% to 71%. Input #225 at csemag m/quickResponse Consulting-Specifying Engineer • AUGUST 2008 43 http://www.yaskawa.com http://www.yaskawa.com/E7 http://www.yaskawa.com http://csemag.com/quickResponse
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