Agriculture Reference
In-Depth Information
Figure 8.4
Monthly coal
combustion at Duke University
from July 2003 to June 2004. Note
that the seasonal variability
profile differs from that of general
electricity-generating facilities,
with the largest consumption
taking place in the summer
months. However, at universities,
the demand is higher during the
school year.
14,000,000
12,000,000
10,000,000
8,000,000
6,000,000
4,000,000
2,000,000
0
firsthand analogous systems in the engineering building on campus as he sought to
gain an understanding of how the systems operate. Several high-tech alternatives
were considered that involved using elevated storage tanks to create static head to
pressurize the system. Working with accumulators and hydropneumatic tanks, a
relatively low-tech solution emerged,
gray water generation
. In this process, a small
hydroelectric turbine tied to the water-return piping system converts the motion
of water into electrical energy, converting potential energy to kinetic energy (see
Fig. 8.6).
Figure 8.5
Augmentation of
coal with fuel oil at Duke
University from July 2003 through
June 2004.
70,000
60,000
50,000
40,000
30,000
20,000
10,000
0
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