The times dispatch. [volume] (Richmond, Va.) 1903-1914, 1905-10-01
TO8MAKE USE Of
FORGE 0.E TIDES {: { J.
a Plan Provided to Generate
Power BY thcaEb,b ofathc
Waves. 8
WATER TAKE PLACE. OF COAL
English Engineers Scl1er1e$to
Utilize Strength Of WaterSO
Wholesale Scale.

Great Brlttiin's ARoShl sGomnitsslon 4 oil
Coat Supplies has made 1t clear tlirlt III
tho distant future England Will haze TO
rely upon other means than COIL to gen
crate power. In Great Britain itsefsit Is
calculated that tho native supply Of coal
will be exhausted III 400 ycnrs. ind that
long before then England will htlve to
draw on outside markets.
Tho utilization OF tidal power Is thought
OF IN this connection, an interesting ar.
tlcle upon which Is given by the Engi-
ncorirg Review, from which tho follow
Ing abstract is tnken: 4, 45
- Tho British Isles iro poorly off for wa
tcrfnlls If every available water power
was used, the annual nylrE IN coal would
be 1900 900 tons, a., mere FRACTION IL, 81 the
present output f23b, 100000 tons. n About
10000 horse power WORDING t en- '
Il day, would be generated 1t IS itnpos- )
slble to Utilize the direct heat Of thegsun,
owing 70 climatic conditions. TO rely on
tho uncertain wind Is hopeless The larg-
est wind power generator In existence
does not exceed sixty horse power. There
remains the utilization Of tidal power.
"a fow schemes nrc already In existence
tho plan generally adopted being to I'M
pound the rising tide, and on Its obb
utilize the power by water wheels. This
Is only available on the ebb and Is not
constant. Mr.. James Saunders, the au-
thor Of the article in question:, before
setting forth schemes for using tho tides
gives some figures Of their rise and fall
He says: FAX g& !,
n On the west coast of Ireland and south
coast Of England the highest tides occur
throc transits after. the new and \. full
moon, nnd along the cast coast Of Ding
land they take place four. transts after
the now and full moon, and in the River
Thames five transts occur III the same
epoch. g3 5H
The table given shows how the tides
vary around the coast a
E s4 Rise in it. Rise In it.
London Docks 1880. 2oA TX Y
Tyne River Entrances. 1914 loM
Glasgow ...l.s........... LA oG.
Portland Bill :...,.,,... ~ ~
brighton '. t....'',.4s.s l ~ az
Eortishcnd ....i.......,'. - q"
Newport .................435 90 ~
&BaIn@ order to utilize this variation OF
height lctween% high and low tide con
siderable area OF tidal water must ne
ainc)oscd. In order to minimize expense
tho natural configuration Of tho coast
must be taken into consideration. 5t5.F
SCHEMES FOR USE OF TIDES,
5t Mr. Saunders describes schemes Tor
using the tides at Chichester Harbor' III
Mena straits, and in the Bristol Chan :.
mel. II THO first provides for an average
If s. 900 horse power per day. Reckoning
5tho value of an electric horse power at u;
cas- Der tannunl, mis-, would, give an "a, an Z
sn;,al.aincon1o Of !e3G,ON, which would
Justify a capital expenditure OF 6 900 ooo.
Tho Mcnai Straits scheme would Yield
III, I'D electric horsepower q day valued
At Eos $50. This would justify a capital
cxnenditure of G54S,750, just about the
amount that would be required by the
scheme.
rhe last scheme, that Of the Bristol
Channel is the most ambitious Of, all
The, proposal is to dam up the mouth
NJ the severn, Owing to the enormous
tidal rise In the channel the daily en-
orgy generated would be 100000 electric
horse mower. worth G1,170, 900, and ,justi-
fvlne n capital outlay Of tho huge
amount Of so.7boO00 Tho total cost OF
tho scheme would be 100000 lest than
this. !, %, I.
description of one scheme will suffice
TO show tho general idea, ChlGhesler
| Harbor is 1880 acres IN extent, INC en
trance being less than q mile IN -eAt 81 y.
across the mouth aud also to divide !, i !, {,
| harhor in two. the conhguraton Lending
itself easily thereto. The Chichester s'ae
would lie the hgh-water4 basin, tn the iiay
Ling side the low-water basin. Inc rlslns
! lido fills tho high basin full. me Top
third Of this is cmpied through tue tur' !
,bines into the lowwater basin, which 1t.c
ter. BY this means constant power
| Is obtained. although at first slght u
| appears to be n waste mot using he IN
coming and outhowlng water