@article{IR,
      recid = {1559880},
      author = {McDonald, Christopher},
      title = {Geothermal system design for Henderson County School  Corporation - Jefferson Elementary School},
      address = {2019-11-18},
      number = {IR},
      abstract = {In early 2019, Henderson County School Corporation awarded  the design of their new
school, Jefferson Elementary School  to Hafer, an engineering and architectural firm
located in  Evansville, Indiana. One request Henderson County School  Corporation had,
was to utilize a geothermal system for the  heating, ventilation and air conditioning of the
new  school.
As an employee of Hafer under the mechanical  engineering department, Chris McDonald
was assigned to the  Jefferson Elementary School in February 2019 and decided to  use
the geothermal system as his senior capstone design  project. His project focuses on the
design and sizing of  the geothermal system which includes: the geothermal field,  field
pumps, building pumps, water source heat pumps  (WSHP's) as well an outside air unit
which will utilize an  energy recovery wheel.
Building load calculations were  completed by the professional Engineer (PE) prior to  Chris
being assigned to the project; these building load  calculations were used in the design
and sizing for the  geothermal system. In sizing the geothermal field, a  geothermal
contractor was hired to drill a test hole and  run a thermal analysis on the site. From the
test results  of the thermal analysis and the building cooling load, it  was calculated a total
of 72 loops were required. A 20%  glycol solution is pumped through the geothermal field
to  the building where the building pump pumps the solution to  the WSHP's to provide the
heating and cooling for the  building. It was calculated that the geothermal field  pump
needed 650 gpm and 90 feet of head to provide proper  flow to the field. The building
pump required 500 gpm and  65 feet of head to satisfy the WSHP's. The sizing of  the
WSHP's were calculated from the building load  calculations for each of the zones they
were dedicated to.  The average size of the WSHP's was 2 Tons. Last was the  sizing of
the outside air unit, to conform to the American  Society of Heating, Refrigerating and Air-
Conditioning  Engineers (ASHRAE) standard; Jefferson Elementary required  7,500 cfm of
outside air. The calculated values were sent  to local industry representatives to make the
selections of  the equipment for the geothermal loop.
The geothermal  system design for Jefferson Elementary School was completed  and
submitted to Henderson County School Corporation on  October 20*^, 2019. Currently the project is pending  approval by the Kentucky Department of Education, where  once
approved, will be sent out for bid to the  contractors.},
      url = {http://library.usi.edu/record/1559880},
      doi = {https://doi.org/10.58090/usi.1559880},
}