Innovative design hinders the growth of hazardous cooling tower-borne pathogens
July 24, 2017
A new Center for Disease Control and Prevention (CDC) study involving 196 cooling towers nationwide found that 84 percent contained Legionella DNA, indicating that the dangerous bacteria that causes a severe, even fatal type of pneumonia were present or had been at some point. This means the real question is not “whether there will be another outbreak” but only “where and when” it will occur.
The WebCTRL chilled water system optimizer minimizes the energy use of the entire chilled water system in a commercial building, including air-handling units, fan coils, and other chilled water distribution equipment. The optimizer solution consists of an Automated Logic controller, a patent pending control algorithm, and an integrated dashboard that allows facilities staff to monitor the overall efficiency of the chilled water system from anywhere at any time.
Things are changing in the chiller market — especially in regards to air-cooled models, variable frequency drives (VFDs), and refrigerants. Contractors are challenged to stay abreast of these trends in real-time.
An investment in a new chiller is not one that building owners make lightly. Owners typically need and appreciate the guidance of a knowledgeable HVAC contractor when making this purchase as there are a number of factors that go into the selection process, and not all of them are necessarily related to the actual chiller itself.
Commercial building owners and managers count on HVAC contractors to take care of their buildings in many ways. They’re expected to keep their facilities cool and comfortable, ensure their processes and procedures continue to hum along, provide quality IAQ, and, of course, maintain their equipment. On this last point, the proper maintenance of chillers takes top billing.
The Luigi Pecci Centre for Contemporary Art once again reopened
February 20, 2017
The new Pecci Centre is innovative not only from an architectural point of view, but also in terms of its sustainable mechanical systems.
The lighting and air conditioning systems, which are the main energy expenditure in every kind of building, have been designed to offer the best internal comfort for the visitors of the centre, while guaranteeing minimal impact both on the running costs and on the environment.
This series features gears of high-strength, case-hardened alloy steel. The gearboxes are designed to fit into non-Marley cooling towers for easy replacement and have heavy-duty double-row interstage bearings for 100,000 hours of life or more.