Butler Hospital in Providence, Rhode Island, has been in operation for over 160 years and many of its sixteen campus buildings are on the National Registry of Historic Places. Butler Hospital is a teaching hospital that is affiliated with Brown University and dedicated to the psychiatric care of its patients. Butler Hospital recently demonstrated their commitment to cutting edge technologies beyond medicine. They chose to install a pre-engineered trigeneration system from UTC Power. This system provides the hospital and its patients with a reduced carbon footprint for its cooling, heating and power needs.


 Energy Productivity

In an effort to improve their overall energy efficiency, Butler Hospital installed the super-efficient, clean and reliable PureComfort® Model 240M combined cooling, heating and power (CCHP) solution. The PureComfort® solution is tied into a main distribution network that provides cooling, heating and power to the entire campus. The system supplies approximately 25 percent of the hospital’s cooling, heating and electrical requirements. In addition, the PureComfort® system is the first to feature a supplemental heat exchanger that not only increases system efficiency, but also enables the system to provide simultaneous cooling and heating. In the summer months, another heat exchanger on the chiller/heater provides hot water for a reheat system.

“We are proud to have the first simultaneous heating and cooling PureComfort® integrated power solution installation. This system allows us to enjoy greater system efficiencies and overall energy cost savings. It also ensures we are contributing to a cleaner tomorrow for our community.”

Walter Dias
Vice President, Bus. Development and COO
Butler Hospital

The PureComfort® Model 240M solution is a combination of four 60-kilowatt microturbines and a double-effect absorption chiller/heater from Carrier Corporation, UTC Power’s sister company. It is the industry’s first integrated microturbine and double-effect absorption chiller system. The microturbine exhaust is collected in a manifold and used to drive the double-effect absorption chiller, enabling the PureComfort® solution to achieve an overall fuel utilization rate of more than 80 percent, far greater than the 33 percent typical of a central powerplant.


 Energy Responsibility

	Butler Hospital is proving that sustainability makes economic sense. While reducing its carbon footprint, it’s also conserving natural resources. The UTC Power PureComfort® system will reduce this hospital's carbon footprint by 460 tons each year. To achieve the same positive environmental impact, 90 acres* of forest would need to be planted.
	The power generated by a megawatt of PureComfort® systems saves over 4 million gallons** of water each year that would otherwise be wasted by conventional electrical generation. That’s enough water to fill more than 6 Olympic-size swimming pools. Water conservation is especially important as humanity battles to conserve precious water resources.
	Reduction of harmful emissions like nitrogen oxides (NOx), is yet another environmental benefit of  PureComfort®  system  technology. NOx emissions will be reduced at Butler Hospital by 3 tons each year, which equates to the same environmental benefit as removing 170 cars*** from the road.