> Energy consumption

Steam Driven Chiller Replacement

A 2014 project replaced a 2000-ton steam driven chiller with a variable speed, energy efficient, 2500-ton electric driven chiller that utilizes non-ozone impacting refrigerant. The chiller will save 2,300,000 kwh/year, and an estimated $150,000 in annual savings is expected due to the improved efficiency of this new chiller.

Monterey Building Air Cooled Chiller 

In 2014, the Monterey Building, at the UTSA Downtown Campus, replaced an air cooled chiller to improve efficiency. The project is estimated to save $17,000 annually.

Water Saving Retrofits 

In 2012, the university partnered with SAWS and replaced 67 urinals. 1 gpf urinals were exchanged with 0.5 gpf urinals for an estimated annual water cost savings of $25,000 which equates to 4,000,000 gallons of water saved annually.

Water Reuse

The iconic Sombrilla Fountain, part of the original UTSA campus construction was retrofit in 2014 under a joint project with funding from the UTSA Green Fund, Alumni Association, UTSA Facilities and the “Fill the Fountain” crowd source campaign. A Cooling Coil Reclamation system was designed and installed to collect and direct cooling coil condensate to the fountain. 92,000 gallons of potable water.

Turf Grass Replaces Irrigated Turf  

In 2013, UTSA converted recreation fields from irrigated natural grass to synthetic turf grass. The replacement achieved a water cost savings of $115,000 annually and 21,000,000 gallons of water is conserved per year. Additionally, SAWS awarded the university $178,000 rebate for this project .

Energy Conservation

Energy Conservation measures represent the greatest value to the Facilities Sustainability Program. These efforts result in lower energy consumption, extended mechanical integrity, cost savings, and greater building efficiency. The extended mechanical life of building systems and a reduction of our carbon footprint are measures of the valuable return on these efforts. Combined, all these projects contribute to a sustainable future for UTSA and the greater San Antonio community.  Utility cost savings and rebates are accumulated in a utility reserve account which has funded other energy-efficiency projects such as campus-wide metering and retro-commissioning of a major science research building. The following is a review of the measurable results from UTSA’s Energy related projects from 2010 through 2015.

Demand Response

In 2012, UTSA began participating in the CPS Energy Demand Response Program. UTSA Facilities utilized a 3.5 MW diesel engine generator to provide alternative off-grid energy to the campus. During demand re­sponse events, the use of the generator offset campus demand and was able to shed 1,698 kW from the CPS Energy electrical grid. In 2013, Facilities participation shed an additional 2,516 kW from the CPS Energy grid. Participation in 2014 shed 1,746 kW from the CPS Energy grid. In 2014, a variable speed chiller was added to UTSA’s North Thermal Energy Plant. The Chiller allows UTSA to continue participation with the Demand Response Program and its use removes the equivalent energy demand of 140 homes from the CPS Energy grid. During peak demand, the campus can raise the supply temperature of the chiller by a few degrees and reduce electrical demand. In 2015, UTSA Facilities began plans to remove the genera­tor, which will provide air quality improvements and reduce our carbon footprint.m

Goals of Recyclemania

• Motivate students and staff to increase recycling efforts and reduce waste generation.
• Generate attention and support for campus recycling programs.
• Encourage UTSA to measure and benchmark recycling activity in our effort to improve our programs over time.
• Have a fair and friendly competition with other colleges and universities to inspire, empower, and mobilize recycling efforts.

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