Page 324 - Handbook of Energy Engineering Calculations

here to stay. Since there seems to be little chance of fossil-fuel price
reductions (only increases), more and more energy users will be looking to
solar heat sources to provide some of or all their energy needs. For example,
Wagner College in Staten island, New York, Installed, at this writing, 11,100
2
2
ft (1032.3 m ) of evacuated-tube solar panels on the roof of their single-level
parking structure. These panels provide heating, cooling, and domestic hot
water for two of the buildings on the campus. Energy output of these
9
evacuated-tube collectors is some 3 billion Btu (3.2 × 10 kJ), producing a
fuel-cost savings of $25,000 during the first year of installation. The use of
evacuated-tube collectors is planned in much the same way as detailed above.
Other applications of such collectors include soft-drink bottling plants,

nursing homes, schools, etc. More applications will be found as fossil-fuel
price increases make solar energy more competitive in the years to come.
Table 2 gives a summary of solar-energy collector choices for quick
preliminary use.

TABLE 2 Solar-Energy Design Selection Summary

Data in this procedure are drawn from an article in Power magazine
prepared by members of the magazine’s editorial staff and from Owens-
Illinois, Inc.

SOLAR-COLLECTOR SOLAR-INSOLATION COMPUTATION
UNDER DIFFERING WEATHER CONDITIONS