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refrigeration PCM storage
Research | May 14, 2020
Utilities: Consider load shifting to avoid cost and emissions in the Midwest  Advancing codes and standards. Measures reaching market saturation. It's getting more expensive and tougher for utilities to meet savings goals. More
HVAC ice storage
Research | May 14, 2020
Help your power systems support renewable energy resources with thermal energy storage Cold thermal energy storage (CTES) can help utilities increase renewable energy production. CTES stores energy generated by solar or wind until it's needed by the utility. The University of Wisconsin-Madison partnered with Slipstream to research CTES control strategies that maximize how much renewable energy can be used. More
office meeting room
Research | April 11, 2020
Does smart lighting deliver on its promises? We test lighting and controls performance to find out. Occupancy sensors. Daylight harvesting. Simple, automated commissioning. AND significant energy savings. Smart lighting developers promise they can do it all—but how do these technologies deliver when installed in real buildings? More
building automation
Research | April 11, 2020
Deep energy savings. Lower installation and commissioning costs. All commercial building types. It’s time to move beyond lighting replacements. More
News
News | January 30, 2020
As the modern grid evolves, the electricity supply and demand will be more dynamic than ever. We need two-way communication between electric service providers and building energy management systems. Slipstream’s engineers created foundational education to empower building owners, designers, and building operators to build and operate for smart grid design. ASHRAE’s Smart Grid Application Guide: Integrating Facilities with the Electric Grid is the first and only of its kind developed for building designers and operators. More
daylight controls
Research | December 20, 2018
Proper commissioning can lead to energy savings—often 60% or more Daylighting control, or daylight harvesting, has become a common energy savings strategy in many sustainable building projects, but several barriers still prevent successful implementation of this strategy in mainstream construction. Considerable effort is expended in the architectural and lighting design of daylighting controls, with actual execution being an afterthought. More
VRF
Research | December 20, 2018
Application of air source variable refrigerant flow in cold climates Variable refrigerant flow (VRF) systems use variable speed, split heat pumps to provide space heating and cooling to a building's conditioned areas. Air source VRF systems perform best in moderate climates, as they typically lose capacity and efficiency at low ambient temperatures—or moderately low wet bulb temperatures where defrost is required—and may be supplemented by an additional heat source. More
Piping
Research | December 19, 2018
Energy savings and lessons learned from observed, practical approaches to demand control ventilation Demand control ventilation (DCV) systems use sensors — generally either CO2 or occupancy sensors — to estimate the actual number of people in an area and supply only as much ventilation air as is needed at a given time. DCV has the potential to save a substantial portion of building energy use in extreme climates like the northern Midwest. More
Building systems integration
Blog | September 11, 2018
A couple of years ago, my team conducted a research project investigating how to reduce the energy use of office plug loads. Among the solutions we tested, one option was a power strip with an occupancy sensor. It shut off your monitors and other gadgets when you were away from your desk. Many buildings we investigated also had occupancy sensors controlling the lighting in the same office space. One of the offices we tested had yet a third occupancy sensor network – and CO2 sensors to control the HVAC system in some spaces. More