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Energy Plan Implementation and Phasing 

Energy Plan Implementation and Phasing

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The geo-exchange heating and cooling plan relies on the ability to circulate hot and chilled water from the geo exchange plant in the basement of the new Dining Hall throughout the rest of campus. This will be accomplished through the installation of new and existing hot water circulation piping (orange) and new and existing chilled water piping (blue). The piping will be installed in phases over the 13-year energy plan implementation, and radiate from the geo-exchange plant (green building) to the North, West, East, and South. The initial energy plan implementation phase is to the North, Phase 4 (Phases 1-3 have already been part of the Singer Hall construction). This phase will connect the academic buildings in the North Quad to the geo-exchange plant. Phases 5 and 6 will be either to the West or East from the plant, while Phase 7 will route under the train tracks to connect the South campus buildings.

 

Geothermal Equipment Layout

Geo-Thermal Equipment Layout

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This image shows the equipment layout in the future geo-exchange plant in the new Dining Hall basement, viewed from above. This plant is the heart of the College’s future combustion-free heating and cooling system. The engines that will enable the geo-exchange process are the four heat recovery chillers (purple). These chillers will handle the energy transfer between the College’s buildings and the deep wells in the earth. The fluid to make the exchange will be circulated between the plant and the well field by the geo-exchange zone pumps (green). The hot (orange) and chilled (blue) water that will heat and cool the campus buildings will be circulated by pumps to feed buildings to the North, West, East and South of the plant.
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Geo-Exchange Well Fields

Geo Exchange Well Fields

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The combustion-free geo-exchange heating and cooling for the College’s buildings relies on using the earth to store heat extracted from campus buildings for summer cooling to be stored in deep wells. The well field is primarily in the Parrish lawn and it is divided into seven zones, with the seventh zone underneath the Ben West parking lot. The wells will be drilled in phases that consider both the anticipated thermal storage requirement commensurate with the phased tie-in of campus buildings and the economics of mobilizing deep drilling equipment. The wells are proposed to be 600 feet deep and there could be up to 900 wells, depending on growth, or not, of the campus building square footage over time and the implementation of energy efficiency measures in campus buildings. Once the wells are installed, the soil and grass cover will be reestablished, and the geo-exchange well field under Parrish Lawn will not be visible. The baseball outfield is on top of the geothermal well field for PPR Apartments.
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