(GP/GT) for Additional Water Supply in the Lower Rio Grande

pad house would not be heated. A 84 x 50 ft sheet metal covered service
building is included. Following the agriculture application, an aquaculture
facility would be an enclosed 36 x 96 ft fiberglass "greenhouse" which would
house three 20 ft diameter aquaculture tanks. Following the aquaculture
facility, would be an 8 x 45 ft outdoor recirculating raceway tank. Figures
10 and 11 illustrate the heat exchanger arrangement for the Phase 1
installation.
Eight phases of future expansion could result in 8 acres of greenhouses,
and 2.8 acres of recirculating aquaculture raceways or 3.2 surface acres of
flow-through raceways. Figure 12 depicts a possible eight phase installation
with one aquaculture facility. The aquaculture facility could be repeated for
each phase of greenhouses, if so desired.
Phase 1 cost estimates (Table 3) for installed greenhouses are from
Campbell Glasshouses, Inc. Greenhouse structure costs will vary by location.
The geothermal heating systems components are estimated from aquaculture
systems costs provided by Red Ewald, Inc. (Appendix C). These costs are
provided for rigid wall type structures and are not used for the economic
analysis given later in this study. Data used in the economic analysis are
from the Comparative Performance Analysis prepared by Southwest Technology
Development Institute.
48