Al6—Lancaster Fanning, Saturday, December 27,1980
Pennsylvania Power &
Light Co’s Montour Steam
Electric Station has been
helping to produce pom
settias as well as generating
electricity during the past
few months
The pomsettias were
grown in an experimental
greenhouse near the power
plant, about 10 miles north of
Danville in Montour County
The greenhouse is owned
and operated by Kenneth G
Bryfogle of Bryfogle’s Inc
A crop of 20,000 pomsettias
was harvested recently in
time to brighten the holiday
season
What makes the
greenhouse unusual in the
method used for heating the
2 75-acre structure A
sophisticated system is used
to extract waste heat from
the plant and carry it to
warm the 120,000-square-foot
greenhouse.
HOW THE SYSTEM
WORKS
The production of elec
tricity results in large
amounts of waste heat being
rejected through the cooling
system of a generating
station. This waste heat is
normally vented to the at
mosphere at the Montour
plant, explained Dr. Heinz
G. Pfeiffer, PP&L’s
manager-Technology &
Energy Assessment.
The cooperative
floriculture research project
is making use of this
discharge heat at its Mon
tour plant, saving a
significant amount of fuel oil
which is traditionally used
for heating greenhouses in
northeastern Pennsylvania.
A 20-mch diameter
W. Ray Crawford, an employee at Pennsylvania Power jght Co.'s Montour
Steam Electric Station, examines a control value that is part of the sophisticated
heating system used at the experimental greenhouse. Waste heat from the plant
is transferred to the greenhouse through an underground pipeline.
Poinsettia project in operation
pipeline, buried three feet
underground, transfers
warm condenser-cooling
water from the plant to the
greenhouse The system
uses 7;000 feet of piping to
establish a “loop” to supply
the warm water to the
greenhouse and return it to
the power plant
Inside the greenhouse, 3A
inch diameter plastic pipes
are embedded in gravel just
beneath the porous concrete
floor The pipes, spaced
about a foot apart, would
total almost 24 miles if
placed end-to-end
The warm water flows
from the supply pipelines to
the pipes beneath the
greenhouse floor When the
water reaches the
greenhouse, it is between 95
and 115 degrees Fahrenheit
The water heats the
greenhouse floor to about 70
F
KEY TO RESEARCH
PROJECT
This unique warm-water
floor-heating system is the
key component of the
research project, Pfeiffer
said. The system was
designed at Rutgers
University engineering
research laboratories and
constructed by Bryfogle.
“The project is designed to
demonstrate how energy can
be saved by tapping heat
that has been previously
wasted The experiment has
great potential in helping
PP&L and its customers find
practical and cost-effective
ways of conserving fossil
fuels,” Pfeiffer said
PP&L has long been in
terested in using this waste
heat and has in the past
A crop of 20,000 poinsettias await shipment from
the experimental greenhouse near Pennsylvania
Power & Light Co.’s Montour Steam Electric
engaged in other research
projects designed to utilize
power plant waste heat,
according to Pfeiffer
The potential for using
waste heat at the Montour
plant is promising. The
greenhouse heating
system, which is now in full
operation, is using less than
1 percent of the waste heat
from the Montour plant
CONSTRUCTION SCHED
ULE
Construction of the
Montour greenhouse began
in mid-June. It was in ser
vice, using power plant
waste heat, five-and-a-half
months after construction
started.
The poinsettias were
started from clippings last
January in Bryfogle’s
greenhouse in Muncy
(Lycoming County) The
plants were transferred to
the Montour greenhouse in
October, when they were
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Station. Waste heat from the power plant is used to
warm the 2.75-acre greenhouse, which is owned by
Kenneth C. Bryfogle of Bryfogle's Inc.
repotted and required more pressure-tested and placed
space to grow
The floor heating system
was first used in early
November, with heat sup
plied by the backup oil-fired
boiler. The supply-and
return pipeline system was
completed flushed,
IgS
went OMOwiHoacrm
in service on Dec 1
Now that the poinsettias
are gone, the greenhouse is
being stocked with lilies, pot
mums, geraniums,
and bed
ding plants
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