[PDF] Geothermal Heating System Conversion Project For The Surprise Valley School District eBook

Author : Gertsch, Juncal and Associates
Publisher :
Page : pages
File Size : 48,65 MB
Release : 1984
Category : Geothermal engineering
ISBN :

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This conceptual engineering study has examined the feasibility of implementing geothermal space and water heating systems at the high school and elemetary school facilities (Surprise Valley School District) in Cedarville, California. The two geothermal wells, which would serve as the energy source for the project, have more than sufficient productive capacity of fluids at temperatures to efficiently heat both school complexes. The wells produce fluids in the temperature range l20-126°F. Peak flow requirements are 66 gpm at the high school and 43 gpm at the elementary school. Average flow requirements are about 25 and 17 gpm, respectively. The fluids are exceptionally clean, at about 178 TDS. Seven engineering design approaches were examined for their technical and economic merit for the proposed application (four for the high school building and three for the elementary school building). The optimum design for the high school is based on the direct use of geothermal fluids in cabinet heaters and unit heaters. The system would displace the schools current reliance on 8-10,000 gallons of fuel oil annually. The optimum design for the elementary school would involve the direct use of geothermal fluids in existing hot water slab systems and the addition of water coils in electrical resistance equipment in the north classroom annex. The geothermal heating system would replace the schools current reliance on about 4200 gallons of fuel oil and 42,885 KWH of electric resistance heating annually. At both installations, existing boiler systems would be retained for backup and infrequent peaking requirements. The cleanliness of the geothermal fluids will permit surface discharge at both project locations. A 25-year life cycle cost-benefit analysis was completed for each school system and the project as a whole. At the elementary school, the savings stream has a Net Present Value (10% DF) of $107,612 on capital expenditures of $73,991 and a 12-year simple payback. At the high school, the savings stream has a Net Present Value of $94,595 on capital expenditures of $118,894 and a simple payback of 22 years. The economic performance of the combined project has a discounted savings stream of $202,207 on capital expenditures of $192,885 and a simple payback of 13-16 years, depending on how closely actual current fuel oil consumption corresponds with predicted heat loads and fuel consumption.

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Page : pages
File Size : 37,60 MB
Release : 2014
Category :
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The Recovery Act: Districtwide Geothermal Heating Conversion project performed by the Blaine County School District was part of a larger effort by the District to reduce operating costs, address deferred maintenance items, and to improve the learning environment of the students. This project evaluated three options for the ground source which were Open-Loop Extraction/Re-injection wells, Closed-Loop Vertical Boreholes, and Closed-Loop Horizontal Slinky approaches. In the end the Closed-Loop Horizontal Slinky approach had the lowest total cost of ownership but the majority of the sites associated with this project did not have enough available ground area to install the system so the second lowest option was used (Open-Loop). In addition to the ground source, this project looked at ways to retrofit existing HVAC systems with new high efficiency systems. The end result was the installation of distributed waterto- air heat pumps with water-to-water heat pumps installed to act as boilers/chillers for areas with a high ventilation demand such as they gymnasiums. A number of options were evaluated and the lowest total cost of ownership approach was implemented in the majority of the facilities. The facilities where the lowest total cost of ownership approaches was not selected were done to maintain consistency of the systems from facility to facility. This project had a number of other benefits to the Blaine County public. The project utilizes guaranteed energy savings to justify the levy funds expended. The project also developed an educational dashboard that can be used in the classrooms and to educate the community on the project and its performance. In addition, the majority of the installation work was performed by contractors local to Blaine County which acted as an economic stimulus to the area during a period of recession.

Author : Calistoga Joint Unified School District
Publisher :
Page : 0 pages
File Size : 46,23 MB
Release : 1984
Category : Geothermal resources
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This project which was funded by the California Energy Commission called for the construction of a geothermal well. Construction of the geothermal well was for the purpose of space heating portions of facilities owned by the school district. The down hole heat exchange method was for utilization of the natural heat to be produced by the well and retrofitting the existing heating system to the down hole heat exchanger.

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Page : pages
File Size : 40,68 MB
Release : 2013
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Cedarville School District retrofitted the heating and cooling systems in three campus areas (High School, Middle School, and Upper Elementary School) with geothermal heat pumps and ground source water loops, as a demonstration project for the effective implementation of geothermal heat pump systems and other energy efficiency and air quality improvements.