This one's going to start out with the elephant in the room, so noone can ignore it.
Where's the smoke? You can't see it. You can't smell it. But people are smoking. It is a remarkable sensation at Sunset Station Hotel & Casino, the newest of four Station casinos in Las Vegas. When you walk through the 80,000 square-foot casino, you could swear you were in a non-smoking facility. It didn't happen by chance. Comfort and ambiance were the primary goals of Station's management and they couldn't be happier with the outcome.
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While extraordinary results suggest that new technologies may have been used in Sunset Station, the fact is the success is based on good, sound engineering practices. Finnegan describes it as, "...simply taking a common sense approach to achieving good indoor air quality. For example, we used 95 percent filtration which we found works as well as active smoke removal systems and electronic filtration in many applications. Combined with high levels of outside air, we created the indoor atmosphere we were looking for. The fact that we're modulating outside air with indoor air quality sensors is another big plus. It's a good system for enhanced indoor air quality."
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Air filtration is only part of the story. The central station air handlers are fitted with an integral, factory-mounted air monitoring and control system called Traq™ that modulates the amount of ventilation air entering the building. With the help of the Tracer Summit® building automation system, the Traq system is able to dynamically adjust the outside air to satisfy building ventilation requirements. An active part of the system uses volatile organic compounds (VOC) sensors to detect organic materials. It senses a broad field of particulates and responds by increasing the amount of outside air brought into the building. Outgassing of VOC's is especially prevalent in the casino, with all of the special materials used to carry the theme throughout the complex. Another active part of the system polls each of the more than 450 variable air volume (VAV) terminal units looking for the most open variable air volume damper. The data is collected at the Tracer® system which adjusts the duct static pressure setpoint for each air handling unit. The supply fan then generates only enough pressure to get the required flow through this "critical" VAV terminal. This assures that no zones are starved for air, yet allows the central station air handlers to operate at the lowest possible energy level.
http://www.trane.com/commercial/library/sunset_casino.aspWould you ban smoking in this establishment?