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Winner's Gallery - HVAC Commercial Equipment
The Rheem H2AC™ Rooftop Unit featuring eSync™ Integration
The Rheem H2AC Packaged Rooftop Unit™ with eSync Integration Technology™ works by taking the heat removed from the HVAC system—which would normally be rejected into the atmosphere—and then uses it to heat water. Specifically, the unit switches from a refrigerant-to-air system, to a refrigerant-to-water system, when a restaurant has demand for air conditioning and hot water.
The Johnson Controls’ YORK® YVWA variable-speed water-cooled screw chiller has a variable-speed drive that saves energy during the 99 percent of operating hours spent at off-design conditions, when building loads and/or tower-water temperatures are lower. It increases sustainability by using HFC-134a refrigerant, and the design reduces the number of potential leak points by 35 percent, said the company. The YVWA screw chiller is capable of handling a higher pressure lift than a centrifugal chiller, it can be used in both thermal-storage and heat-pump applications, while delivering the highest efficiencies available, the manufacturer stated.
The Daikin McQuay Rebel™ commercial rooftop systems deliver up to 19.5 integrated energy efficiency ratio (IEER). Rebel combines quality-manufactured McQuay equipment with advanced Daikin technologies: variable air volume (VAV) operation from 3-15 tons, variable-speed heat pump with hybrid (gas, electric, hot-water) heat options, variable-speed ECM motors on all fans, variable-speed inverter scroll compressor, electronic expansion valves, optional modulating hot gas reheat, and ultra-quiet composite condenser fans. Rebel is a VAV, air-to-air heat pump.
The TT400 380V model is an oil-free, variable-speed, magnetic bearing centrifugal compressor. It uses HFC-134a refrigerant for an optimum environmental solution and provides outstanding part load and full load efficiency. The compressor is lightweight, emits low sound and vibration, includes self-contained intelligent controls, and utilizes a small footprint compared to other compressor technologies. Its oil-free design makes it very low maintenance and its small stature allows for hassle-free installation. Its self-contained intelligent controls allow for constant monitoring, making diagnosis and repairs in the field much easier than conventional compressor applications.
In this issue of The NEWS, we present the Residential Heating Showcase, featuring the latest heating equipment to hit residential HVAC. We also discuss developments in the tools and test instruments market.