Gregory Harden, C.E.M., C.B.C.P.
Track F | Energy Services
Rising energy costs and increased greenhouse gas emissions have resulted in a new awareness to reduce operating costs and the environmental impacts of buildings without negatively affecting occupant safety or comfort. Using a three step approach that includes Energy Auditing, Building Commissioning, and Measurement and Verification (M&V), they can obtain the most effective energy and cost savings from commercial, municipal, institutional and industrial buildings. Energy Audits are performed with varying levels of detail (ASHRAE Level I, II III) from a basic scoping study that identifies low cost/no cost energy conservation measures to a comprehensive study which may include data logging/metering to provide recommendations for detailed investment grade opportunities. Commissioning (Cx) is a process that documents whether new equipment has been properly installed, started and fined-tuned to meet operating requirements for new construction. Retro-Commissioning (RCx) is a similar process applied to existing building systems. Both Cx and RCx have recently been adopted by numerous state and local agencies as a requirement for Energy Code Compliance, as well as to meet mandated energy and/or greenhouse gas reduction goals. M&V involves taking spot or longer term trending measurements to obtain actual data which is compared to predicted energy savings calculations. Guidelines will be provided to help building owners make the best decisions by understanding the importance of how the Energy Audit and M&V processes relate to Cx and RCx, including: • Level of effort required for simple vs. complex buildings • Criteria to determine which level of audit is needed • Data requirements before commencement of Cx/RCx activities and how to obtain it • Appropriate use of M&V prior to performing an audit or Cx/RCx • Ways in which building owners can better prepare for Cx/RCx activities • M&V techniques to achieve both short and long term results • Examples of effective and ineffective Cx and RCx