Building Energy Resilience

Ideas to fuel a sustainable built environment

11 min read

How to Do Building Automation System (BAS) Graphics Right

By Rick Stehmeyer on Mar 4, 2020 10:00:00 AM

Over the course of my career I have evaluated BAS graphics packages as a function of my daily 9 – 5. I have been doing this since 2002 and in those days, most BAS manufacturers barely had functioning websites. However, the products they sold allowed their vendor networks to create Human Machine Interfaces (HMI) and Graphical User Interfaces (GUI), and these interfaces haven’t really functionally changed a whole lot since those days of pre-broadband internet and before the smartphone was commonplace. Given that we may be stuck with outdated user interfaces for some time to come, it makes it all the more important that proper care is given to how the information is displayed and to ensure users can easily absorb the information they need from the BAS.

Topics: Building Data bas building automation system
7 min read

Energy and Beer – The Path to Sustainability

By Krystina Kattermann on Jan 29, 2020 10:00:00 AM

Vermont is home to a lot of my favorite things. There’s skiing, swimming, music, cheese, apple picking, and more, but perhaps my favorite is Vermont beer. The Burlington area alone has enough breweries to keep one busy for a long weekend – from the classics like Switchback Ale and Fiddlehead IPA, to the ever rotating sours at Foam to the delicious (and highly creative) concoctions coming out of Burlington Beer Co., the 10 mile radius around this small city I call home has something for everyone. Though my love of beer continues to grow, so too has my concern about the sustainability of the beer brewing process.

Topics: Sustainability Energy Efficiency Commercial
3 min read

Challenges with Rooftop Units and Factory Controls

By Jamie Hand on Jan 15, 2020 10:00:00 AM

After an early morning departure and a snowy drive, my colleague and I arrived onsite to test, among other equipment, a packaged rooftop air handling unit with factory controls. At first, the unit appeared to check all our boxes, but as we dug into the details, it became clear that this would be a very expensive heating system to operate. This blog entry is about factory controls and the importance of getting into the weeds to identify issues like the one we found with this rooftop air handling unit.

Topics: Building Performance & Technology commissioning HVAC Factory Controls
4 min read

Welcome 2020 - Now Let’s Meet those 2030 Goals!

By Katie Mason on Jan 6, 2020 10:00:00 AM

With a new year and a new decade upon us, the popular trend is to create new resolutions and goals. Being an active member of the Burlington (Vermont) 2030 District Engineering Team has me thinking about the District’s and the City of Burlington’s goals and progress for energy, water, and transportation emission reductions. This post outlines what the Burlington 2030 District goals are, how these compare to the City of Burlington goals, and the services our team provides to property owners to help reach these goals.

Topics: Sustainability Green Building Building Performance & Technology transition to renewable energy Building Data
3 min read

Making Sense of Building Data: Part 1: Overview

By Daniel Tuhus-Dubrow on Dec 18, 2019 10:00:00 AM

Similar to other domains, data from buildings is being generated at an unprecedented pace and scale. However, all of that data is useless if we can’t extract meaning to create value and yield actionable insights. This requires the utilization of protocols or standards to effectively make sense of the data. Project Haystack is one such standard that has been developed over the past several years and allows for the contextual tagging of data in a flexible way, using data from any number of sources.

Topics: Building Performance & Technology technology Building Data
5 min read

Saving the Planet One Veggie Burger at a Time

By Eric Hauser on Dec 4, 2019 10:00:00 AM

Cx Associates’ work focuses on engineering services that save energy, and thus doing our part to save the planet. All of us also have a strong personal commitment to living as sustainably as we can, recognizing that no one is perfect, and that we all do the best we can. Our employees walk or bike to work, take public transportation, compost, live in walkable neighborhoods, drive efficient cars, and recycle.

Topics: Sustainability Climate Change
3 min read

It’s All in the Lighting: A Closer Look at the CRI Method

By Wilson Yandell on Nov 20, 2019 10:00:00 AM

A few years ago, while living in a small apartment in Montreal’s Plateau neighborhood, I noticed that the lightbulb in my kitchen had burned out. Naturally, I went to the hardware store to find a replacement. After struggling to read the French labeling on several different packages, I ultimately decided to go for the least expensive box of LED bulbs that the store had available. Once I installed the newly purchased lightbulb, I noticed a difference in the way our kitchen looked. Specifically, I noticed a difference in the appearance of the bowl of fruit that always sat on the counter. While the lightbulb illuminated the space, I remember thinking to myself how unappetizing and dull my fruit now looked. This exercise, though unintentional, clarified the importance of a light source’s color rendering capability.

Topics: Standards and Metrics Energy Efficiency Lighting
3 min read

Understanding the Basics of a Ground-Coupled (Closed Loop) Heat Pump Design: Part 2

By Tate Colbert on Nov 15, 2019 10:00:00 AM

Thanks for following the second part of the ground coupled heat pump design. If you haven’t already, now’s a good time to go back and read Part 1. In the first part of this post, we discussed the importance of understanding thermal imbalance in a ground source heat pump system and the longevity impacts associated with an imbalanced system. Despite the issues associated with a thermally imbalanced system, there are ways to address building loads with additional technology that will further enhance the performance of the ground-coupled heat pump system, as well as provide long term performance.

Topics: Energy Efficiency solar energy Heat Pumps
6 min read

The United Federation of Energy Transition

By Rachael Straub on Nov 6, 2019 10:00:00 AM

In 2011, a study, co-authored by an engineering professor from Stanford and a transportation research scientist from UC-Davis, found that we could halt global warming, save millions of lives, reduce air and water pollution, and develop secure, reliable energy sources in 20-40 years. Nearly all of this could be done with existing technology and at costs comparable with what we spend on energy today.

Topics: Public Policy renewable energy transition to renewable energy Climate Change
3 min read

USP 800 Pharmacy HVAC Testing – The Devil is in the Details: Part 1

By Matt Napolitan on Oct 23, 2019 10:00:00 AM

A large healthcare client of ours recently opened a brand new USP 800 compliant compounding pharmacy, which we commissioned. We collaborated with the engineering team and the hospital during the design phase to help ensure prior issues weren’t repeated, and the hospital’s concerns were thoroughly articulated and addressed. At the conclusion of the design phase, the team was confident that the design direction was solid and would give the hospital what they were looking for.

Topics: Healthcare commissioning HVAC USP 800

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