Refer to January 2010 B2B for an introduction to energy auditing and energy retrocommissioning. A good guideline for implementing an energy audit is the ASHRAE Procedures for Commercial Building Energy Audits manual.
Helpful HintsRefer to the October 2006 "HVACR Designer Tips" and "Back to Basics," and this month's "HVACR Designer Tips" for additional information. Design Phase Give proper consideration to adequate duct
When designing an energy conservation system, it is important to be able to collect the operating data so that actual ROI can be monitored and measured against the estimated ROI. The design engineer needs to work closely with the facility engineer to determine what metering and control components are required in order for the facility engineer to do his job efficiently. The same can be said for specifying the expansion of an existing CMMS system so that planned maintenance workorders are available on day one of occupancy.
Leaning on experience and data from various K-12 cities and projects, the author pursues some less conventional design approaches. They may revolve around radiant heating and/or cooling, but depending on school size and other factors, the smart use of heat recovery, DOAS, and improved central plants could also put a project on the HVAC honor roll.