Presence Saint Joseph Medical Center was built in 1962 in Joliet, IL, and has grown to encompass nearly 1.2 million square feet of facilities, with 480 licensed beds. Areas of concentration include neuroscience, advanced cardiac care, orthopedics, obstetrics, rehabilitation, and a trauma center. The facility was retro-commissioned as part of the ComEd Smart Ideas Incentive Program. The intent was to identify and implement low-cost, short-payback energy conservation measures to improve sustainabiltiy and reduce annual operating costs.
During planning and investigation, eight retro-commissioning measures (RCMs) were presented to the hospital. The two measures chosen for priority implementation focused on improving efficiency of 13 air-handling units. ComEd paid 100% of the engineer’s RCx fee, allowing PSJMC to conserve finances for the implementation. Of the eight suggested RCMs, the client selected the two most cost-effective, both of which had a very short simple payback time (0.08 year for eliminating simultaneous heating and cooling and 0.27 year for correcting supply fan controls). The total cost savings resulting from these two measures exceed $330,000/yr ($134,409 for electricity and $205,417 for gas). The client expects to implement more RCMs in future months. If all six remaining RCMs are implemented, annual additional cost savings would be nearly $26,000 for electricity and over $5,700 for natural gas.
|2014 Excellence in Engineering Award, ASHRAE Illinois Chapter.|