Using a CO2 cooling system reduced this organic grocery store’s refrigerant use by 60% to 65% a year. Arizona-based Sprouts Farmers Market is not only a leader in natural and

Regulatory, competitive, and environmental pressures are pushing data centers away from the traditional power sources. Here, the author surveys the landscape and reviews one comparative study involving CCP cogeneration and conventional electricity sources. Reducing the carbon footprint and lessening reliance on a sometimes unreliable grid are just two reasons to look into CCP.

Here’s a manufacturer’s competitive advantage waiting to happen.

We still face plenty of ways for start-up to be a let down.

If you can’t get to it, you can’t commission it.

A VRF system installed in this University of Hawaii dorm helped the school achieve LEED® certification and lower energy costs. Founded in 1907, the University of Hawaii at Manoa (UH-M)

As noted in last month’s column, accessibility to mechanical, electrical, and control system components is critical for sustainable systems operation. However, the design and construction industry is sorely lacking when it comes to agreeing on what appropriate accessibility means. In order to make a meaningful difference in how systems are delivered to owners/operators, it is critical to define measurable accessibility acceptance criteria early in the design phase and allow the commissioning professional to shepherd that criteria through the design, construction, and acceptance phases.

Here’s a task: bridge the new mechanical room to the utility connection in the old space - located in an adjacent building in Chicago’s South Loop. Room for equipment is frequently tight, but in the case of this steam pipe, the room for error was less than one inch. The kind of planning that navigated that challenge accounted for (almost) everything in this tricky retrofit.

Some thermal storage media are familiar to most of us, but what about gravel? Or lake water? See how those can work in the right environments, and tuck this away as a general refresher on thermal storage concepts and options for use in hospitals, data centers, and elsewhere.

Through a flexible design incorporating radiant heating and cooling, demand ventilation, energy recovery, and VAV, Manhattan’s Cooper Union leads its class in sustainable performance in classrooms, labs, and beyond.