Jökull - 01.12.1961, Blaðsíða 57

of the new hot water sources in the city. These
sources may possibly furnish the basis for an
expansion of the system up to a total number
of pepole served of 50,000 to 00,000. On the oth-
er hand, the sources in the city are no doubt
limited and new sources have to be exploited in
order to obtain the capacity neccessary in 1970
and the following years.
The Krýsuvík project is onc of the main
future plans for expansion. Other possibilities
may be at hancl but this appears to be a reas-
onable next stage.
The location of the Krýsuvik area is shown in
FIGURE I. This thermal area appears to
possess similar physical characteristics as the
Hengill area discussed above. The potentialities
and the subsurface temperature of both areas
appear to be of the same order. Production cost
in the Krýsuvik area are therefore assumed to
be as those given in column (3) in TABLE II.
The Krýsuvik-project involves the supply of
heat of about 500 Tcal/year. The medium is
ivater at an intake temperature of 185° C
which requires that some of the boreholes have
to be operated at a pressure of 13 atm abs. The
main supply pipeline is projected to deliver
the water at a temperature of 180° C. The pipe-
line is designed for an average flow of 730
metric tons/hour which involves a pipe of 16
inches i. d.
A novel feature of the project is that about
i/2 of the heat transported is to be delivered
in form of steam at a pressure of 2,75 atm abs
to industries in the Reykjavik arca. This steam
is obtained by flashing the water at a tempera-
ture of 130° C.
The main features, temperatures and the
flow sheet of the project are given in FIGURE
II. The distribution system for the domestic
heating is divided into parts. One part is a two-
pipe return system which utilizes the tempera-
ture range from 130° to 90° and the second
part is a single-pipe system utilizing the lower
temperature range.
The total investment in the project, includ-
ing the distribution system, but excluding the
boreholes is estimated at $ 8 million. The price
per unit heat consumed is estimated at ap-
proximately 4.00 $/Gcal and 2.00 .j»/Gcal for
respectively the domestic and the industrial
system. These prices are based on the computed
operation cost less taxes and profits.
REFEREN CES.
Bodvarsson, G.: Physical characteristics of nat-
ural heat resources in Iceland. Conference
on New Sources of Energy, Rome (1961).
Published in Jökull, vol. 11. 1961.
Einarsson, S.: 15 MW geothermal power project
Hveragerði, Icelancl. Conference on New
Sources of Energy, Rome (1961).
Karlsson, Th.: Drilling for natural steam and
hot zuater in Iceland. Conference on New
Sources of Energy, Rome 1961).
Sigurdsson, H.: Reykjavili Municipal District
Heating Service and its experience in
utilizing geothermal energy for domestic
heating. Conference on New Sources of
Energy Rome (1961).
PAPERS ON CONFERENCE AGENDA
ITEM II.A.3.
Title of Paþer
„Salt production by geothermal energy in
Japan“
G/27
„The cxtraction of salt from sea water by
multiplc effect evaporators using natural
stearn"
G/32
,,Green-houses by geothermal heating in
Iceland“
G/37
„Production and distribution of natural
hcat for domcstic and industrial heating
in Iceland“
G/39
„Utilisation de l’énergie géothermique pour
la production de l’acide borique et des sous-
produits contenus dans les „soffioni“ de
Larderello"
G/45
„Reykjavik Municipal District Heating Ser-
vice and its experience in utilizing geo-
thermal energy for domestic heating"
G/52
„Recent developments in New Zealand in
the utilization of geothermal energy for
hcating purposes“
G/56
„The recovery of lithium and other mine-
rals from geothermal water at Wairakei“
G/59
„Geothermal heathing for industrial pur-
poses in Iceland“
G/63
„Problémes techniques et économiques sou-
levés par la présence d’impurctés chimiques
dans les fluides d’origine géothermique“
Nanie(s)
Y. Mizutani
B. Lindal
B. Lindal
G. Bodvarsson
and J. Zoéga
D. Lenzi
H. Sigurdsson
R. Kerr
P. Bangma
W. Cooke
F. Furness
and G. Vamos
M. Kcnnedy
B. Lindal
C. Garbato
55