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Buildings and Fleet Division Room 602, Zeidler Municipal Building 841 N. Broadway Milwaukee, WI 53202 Venu Gupta, Superintendent Phone: (414) 286-3401 Fax: (414) 286-5907 |
| Photovoltaic & Geothermal Installation | Buildings and Fleet Division / Buildings Services |
| RECYCLING EDUCATION CENTER PHOTOVOLTAIC AND GEOTHERMAL INSTALLATION |
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At the Recycling Education Center located at 1313 West Mt. Vernon Avenue two (2) Green/Sustainable High-Performance
projects are being installed and nearing completion. The projects consisted of a Geothermal System (ground-source
heat pump) and a Photovoltaic Power System (on-grid).
A ground-source heat pump (GSHP) extracts solar heat stored in the upper layers of the earth; the heat is then delivered to a building. Conversely, in the summer season, the heat pump rejects heat removed from the building into the ground rather than the atmosphere or a body of water. GSHPs can reduce the energy required for space heating and heating in buildings by as much as 50%. A solar electric system, which is tied to the electric provider’s (WE energies) distribution grid (or "grid-tied"), consists of solar electric modules connected to an inverter and tied into the site’s electric service. The inverter changes the direct-current (DC) of electricity created by the solar electric modules to alternating current (AC). The AC current is compatible with the electric provider’s grid, and is able to power devices such as lights, appliances, computers and printers. When excess power is produced by the solar electric system, it can be put back onto the electric grid. Solar electric systems produce power intermittently because they work only when the sun is shining. This is not a problem for grid-tied solar electric systems because the electric utility can provide back-up power. When the solar electric system generates more power than the site need at any particular moment, the power is put back into the grid. The site is credited for the power production, at a rate of 22.5 cents per KWH. |
| CONSTRUCTION SUMMARY OF WORK (Geothermal) |
HVAC: The project involved the removal of an existing air cooled self-contained air conditioning unit and its replacement with four water cooled heat pumps. The heat pump water loop is a geothermal system utilizing the ground adjoining the property as the heat sink. The existing sheet metal duct distribution system was modified to accommodate the new heat pumps. |
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