The Aston dual hydronic units are available in 8- to 15-ton capacities. The unit’s cabinet is fabricated from heavy gauge steel for long-lasting performance.
Commercial
system experts see flow as a key step to optimizing system efficiency. Cutting
down required tubing size, insulated PEX for district systems, and
variable-speed pumps to pin down a chiller’s exact needs are three points of
attack in the modern campaign against waste.
Having lived with an ancient heating system and no cooling for years, a
Pennsylvania congregation now sings the praises of the updated
hydronics and new mini-splits that brought a mechanical renaissance
to the church’s various spaces.
From checking out valve chatter to maintaining optimal condenser water flow, consider a few quick reminders from the Northwest Energy Efficiency Alliance for a proactive, preventive O&M strategy to keep your water distribution system quiet and efficient.
Radiant cooling was used at the Hall St. Helena winery in CA to save energy and maintain precise control over the winemaking process. When hydronics contractor Robert Reid saw
A single-pipe system kept HVAC system operating costs low, even in the humidity-laden tropical air of Curacao in the Netherlands Antilles.When KPMG, the global audit, tax, and advisory services firm,
Chicago’s Michael A. Bilandic Building has 21 stories, one for each year since the previous retrofit. Recently, an open-minded project team paired modular chillers and hydronic gas boilers with pumps and VFDs to conquer some upgrade challenges, bring the mechanical system into the 21st century, and knock 15% off the tower’s measured energy use.
From sidewalks to hospital entrances and helipads, these systems are becoming a more common part of a project’s mechanical infrastructure. Examine differences between ASHRAE’s old and updated classifications, then review design considerations such as heat of evaporation, heat loss to the atmosphere, and back and edge losses. Tubing, spacing strategies, and controls round out the primer.
A decentralized steam plant with new boilers in each building saves nearly 12 million gal of water per year at Sandia National Laboratories.In 2004, the Sandia National Laboratory, located at