I recently attended the Performance Evaluation Methodology for Building Occupancy Sensing Systems for HVAC Controls workshop, which followed the annual ASHRAE conference that just wrapped up in Kansas City, MO. The workshop focused on one of ARPA-E’s research programs called SENSOR (Saving Energy Nationwide in Structures with Occupancy Recognition), and brought together a diverse group of individuals, including researchers from national labs and universities, industry representatives, design engineers, and other interested parties.
When people ask me what I do for work, I generally tell them I’m a building systems engineer, with a big focus on making facilities more energy efficient and comfortable for occupants. One common part of my job entails going to a building to perform an energy audit or assessment. During these visits, we follow the same straightforward outline:
- Walk through the site
- Inventory all energy-related equipment including lighting, mechanical systems, building envelope, etc.
- Speak with the building operator about how they run the building
- Ask the building owner, occupants, and operator about and any issues or concerns they have regarding maintenance, equipment that is not working properly, or comfort problems.
The Better Buildings by Design conference took place a couple of weeks ago here in Vermont. The two-day conference brings together contractors, utility representatives, architects, engineers, and other energy professionals to discuss energy efficiency, durability, and operations and maintenance for residential and commercial buildings. It included sessions across multiple subject tracks, workshops, and a trade floor with many exhibitors, and offered a great opportunity for learning about new developments in the field and networking with fellow energy nerds. Cx Associates had a strong attendance at the conference, with several of us presenting in multiple sessions.
I spend most of my time focused on improving energy efficiency in buildings. Common recommendations include improving scheduling so that equipment doesn’t run continuously 24/7 or implementing lighting controls so that lights automatically turn off when nobody is in the space. These types of measures can significantly reduce electricity consumption but may have little impact on the building peak demand, let alone the grid peak demand.
Recently, I’ve been getting excited about so-called “no touch” energy audits, which employ meter data analytics to assess a building’s energy performance and even make specific recommendations regarding potential improvements, all without requiring the (expensive) “boots on the ground” of a traditional energy audit. This idea has been getting a lot of attention over the past few years as the increasing availability of 15-minute electric interval data has met with the “big data” revolution. In this post, I’m going to take a quick walk through various analysis techniques, moving from coarser to finer granularity.
Following the withdrawal of the United States from the Paris Climate Agreement and the abdication of responsibility at the federal level to address climate change, the action now moves to states, municipalities, businesses and individuals. Fortunately, there are a lot of exciting things happening right now in these arenas, which could go a long way toward filling the current leadership vacuum. This post will survey some of the efforts underway, with a focus on initiatives aimed at improving energy efficiency in buildings.
When people ask me what I do for work, I generally tell them I’m a building systems engineer, with a big focus on making facilities more energy efficient and comfortable for occupants. One common task entails going on a building site visit to perform an energy audit or assessment. During these visits, we walk the site, inventory all energy-related equipment (including lighting, mechanical systems, building envelope, etc.) and speak with the building operator about how they run the building and any issues or concerns they have regarding maintenance, equipment that is not working properly, or comfort problems. The end result is typically a report documenting the existing building systems, with recommendations on equipment upgrades or operational changes that can be made to save energy or improve comfort. We also will provide quantification of energy and cost savings for each identified opportunity.
Topics: Energy Efficiency