Full resolution (JPEG) - On this page / på denna sida - Second part - X. Manufacturing Industries. By Å. G. Ekstrand, Ph. D., Chief Engineer, Control Office of the Department of Finance - 11. Other Industries - The Electric Industry, by A. Enström, Ph. D., C. E., Stockholm
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OTHER INDUSTRIES.
887
the domain for the use of electric power has become continually enlarged.
This is in a great measure due to our enormous supply of natural
motor-power in our waterfalls and peat-mosses — both often spoken
of in the foregoing (p. 772 and 848). Concerning our resources of
water-power, an approximate calculation recently made by Professor Arrhenius
is to be borne in mind. The natural supply of water-power in Sweden
is here estimated at 4 million horse-power, and, by force of this, the
reflection is made, »that probably 10 à 20 per cent of the motor-power at
present requisite for the industries and rail-traffic of the whole world
may be furnished from the Swedish water-falls». Even though taking
into consideration that the largest portion of this abundance of power
is located in such parts of the country where it cannot, at the present
stage of technical development, be profitably utilized, there is, however,
sufficient supply of power for the needs of the country itself for long
times to come in water-falls suitably located in the Southern and
Central parts of the country. A certain number of these are already put
to use, chiefly for the Mining and Iron industries.
The first transmission of electric power of greater significance, was carried
out in Sweden 1891/92 from Avesta, at the river Dalelfven, to the Norberg
Mining field. Subsequently there have arisen in quick succession a number of
such transmissions of considerable dimensions, part of which are enumerated in
the subjoined Table. The system is in most cases threephased alternating current.
Mines or Works. Distance, Kilometers.1 [-Horsepower.-] {+Horse- power.+} Tension, Voit. Year of concession.
Avesta—Lillefors—Norberg Mine». ...... 23 900 10,000 1893
Hellsjön (Grängesberg Mines)....... ...... 14 690 9,500 1893
Eiikullen (Grängesberg Mines)...... ...... 12 290 9,500 1898
Lernbo (Grängesberg Mines)......... ...... 27 1,500 9,500 1899
Hofors .................................... ....... 2-4 1,990 1.500 —
Hellefors.................................... ....... 6 1,000 2,000 —
Tràngfors — Vesterås................... ...... 22 1,800 14,000 1898
Skrtmfors—Örebro..................... ...... 38 3,750 15,000 1899
Brattfors—Örebro...................... ...... 38 2,000 20,"00 1903
Näs—Horndal........................... ...... 14 }3,42ö| 5,000 1897
Näs—Sandviken........................ ...... 54 20,000 1902
Kvarnsveden—Domnarfvet........... ...... 4-6 4,800 7,000 1899
Biasmoforsen—Östersund............. ....... 23 625 10,000 1894
Klabböle—Umeå......................... ...... 8 500 3,000 1899
Vii—Sundsvall.......................... ...... 14-6 2,000 5,400 1899
üddby—Stockholm...................... ...... 17 500 10,000 18%
Semla (Fagersta Works)............... ...... 1-8 1,250 2,000 1896
Västanfors (Fagersta Works)......... ....... 28 300 2,000 1900
The total number of transmission establishments with Royal concession
amounted in October 1902 to 122, and at present (December 1903) probably has reached
150. Several large constructions have been proposed, e. g., from the river
Dalelfven (the Elfkarleby Falls) to Stockholm (185 kilometers or 115 miles,
20,000 horse-power), and from the Trollhättan Falls to Gothenburg.
Most of the establishments above mentioned, as well as a great number of
smaller dimensions furnish power for the needs of the Mining and Iron industry.
1 A kilometer = 0 621 mile.
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