Geoscience Reference
In-Depth Information
Studies for Nuclear and Pumped-Storage
Power Plant
˙
arnowiec
Wojciech Majewski
1
Introduction
In the 1970s, there was considerable shortage of electric power in Poland. It was
proposed to build a unit consisting of nuclear and pumped-storage power plant.
Nuclear power plant would supply basic electric energy and energy for pumping
without energy loss for transmission. The place for power plants was chosen in the
vicinity of Lake
˙
arnowiec, which would be the reservoir of cooling water for
nuclear power plant and simultaneously lower reservoir of pumped-storage power
plant. There was a convenient place to construct artificial upper reservoir on
moraine hills whose elevation exceeded 100 m water level in the lake and the
distance from the lake was about 1 km. The capacity of nuclear power plant
consisted of four reactors 440 MW each, which resulted in the discharge of cooling
water of 90 m
3
/s with temperature increase
D
t
9.2
C. Operation of pumped-
storage power plant (four reversible Francis units, 700 MW) would cause daily
water exchange between the lake and upper reservoir of about 14 hm
3
, resulting in
the discharge of about 600 m
3
/s. Lake
˙
arnowiec is situated in Pomeranian prov-
ince, about 5 km from the Baltic Sea.
To provide data for the design and operation of both power plants, the following
studies were initiated. They included lake and the neighboring region in natural
conditions:
¼
l
Hydrologic state of the lake and its catchment including water balance
l
Hydrodynamic and thermal regime of the lake
l
Ecological and fishery state of the lake
l
Meteorological conditions in the region of the lake
