Page
THE EXPRESS LIFT CO. LTD.
WITH WHICH IS INCORPORATED THE BUŽINESS OF
SMITH, MAJOR & STEVENS, LTD.
EXPRESS SMS
LIFTS
MODERN LIFTS FOR
MODERN BUILDINGS
SPEEDY RELIABLE SERVICE
FOR DETAILS APPLY TO
THE G.E.C., QUEEN'S BUILDING, Chater Road.
EVERYTHING (9.8.C. ELECTRICAL
OPAQUE
WHITE
a. Berger
Product
INTERIOR EGGSHELL GLOSS FINISHING
-ONE COAT EQUIVALENT TO TWO
COATS WHITE ZINC
W. R. LOXLEY & CO.
"Atkinso
YORK BUILDING, CHATER ROAD.
CHA
[Heelusive..Licensees.
Members of hGHA
HONG KONG DAILY PRESS, SATURDAY FEBRUARY 13,
ENGINEERING AND BUILDING
ADVANTAGES OF OIL FUEL
A
thu
the
ADAPTABILITY TO STEAM RAISING
AND METAL SMELTING.
ITS USE IN MODERN METHODS OF
CENTRAL HEATING.
simple classification materiale Available aconomic production heat for numerous
of figures that one tgn of oil is ther· formally equivalent to one and three! of quarter. tons of coal and occupies domestic only five-sixths of its volume, so
1932.
ENGINEERS IN THE GEND OF ELECTRIC
HONOURS LIST.
VERY FEW NAMES MENTIONED.
ITY IN GREAT BRITAIN
During the first den months of 1031 the total amount of electricity generated by authorised undertak Fors in Gyone Britain was: 9:063 'imil-
lion unite, as compared with 8,728-
this country, Its substitution for cont or soke dose not necessitate CHOICE SPREAD OVER WIDE million units in the corresponding.
AREA.
any change in the general outlay of tho. heating system, and again il; may be said that just those ad-
In commenting on the New Year's vantages which attack to, its in
Honours List, London contem- dustrial use are equally serviceable in domestic work, including econo.porary remarks that it exhibits a "fine catholicity." We presume my, accurate control, cleanliness, the comment is meant ironically, and safety,
ti
THE OIL MIST..
To say that the afficient combu tion of no cii fuel is a simple mat ter would not do justice to the
い
period of 1900, The former figure. represents an increase of 4 par cut.
of the Bath.
Aeroplane. Designer Honoured,
since we discover in it but few of Mesars. H H. Humphries, city the pames of that large band of engineer and surveyor, Birming- enginoora “And physicists who, hah. G. K. Menzies, secretary to though not in Government or mun the Royal Society of Arts; R. J. ipal employment, are yet doing Mitchell, director and chief design their utmost to desdives well of their tr. Supermarino"Aviation Works
and industrial purposes recognises that of this basta boat occupies rasearch Rze experience through country. It may be that this is in ¿Vickers), Ltd., H: Moore, director
the three states in which these ma toriale-or fuels as they are more
tersely called-silber occur in na ture or are the products of some antificinì process. solid, liquid and gaseous forms are
all in common use.
1
accord with the eternal fitness of
of · Metallurgical - Resenach, War things, but it hardly entitles the Office, and H. Stilgce, chief notice that Baronies have been con have been made C.B.E. and Captain list to be described as catholic. We engineer Mitropolitan Water Board,
which this simplicity has been m twice the space of oil.
bained. A feature of every oil There is, too, the greator u. formity of the oil over that of the burner by means of which the burning apparatus is the design of solid fuel leading to the possibility constant heat value of this material, storage tank is broken down and Hon. Wilfrid Ashley and the Right, search Section, General Post Office which can be kept to close specifi- injected into the combustion cham Foa. Bir William Mitchell-Thom- and Mr. R. Withycombe, director, Amongst the solid fuel coal macation, offers the advantage of uniber in the form of a fine mist, the son, both of whom as Minister of Electricity Department, Zanzibar, turally assumes the place of in- form behaviour in similar plants oil particice of which are axocoding Transport and Postmaster General, 0.3.E. Membership (M.B.B.) of the portance, but few would contend all over the world.
ly minute.
rospectively, have had an phemeral same order has been awarded to The first result of this process of connection with engineering Mr.Mesars. W. N. Booth assistant that it offers all the elements which Fuel oil again offers the great ad make for ideal combustion. Its abvantage over solid fuels of the uni atomisation is the reduced quantity W. G. T. Goodman, chief engineer mechanical engineer, Royal Ord- undanes in nature constitutes its formnity of the process of combus of air required for combustion, this and general manager of the Muni- nance Factories. Woolwich, C. J. chief recommendation, but it bastion, this being susceptible to the bonic acid content of the waste gas, South Australia, has been made a tion, Ministry of Economics and
being evidenced by the high caripal Tramways Trust, Adelaide, Colvin, assistant engineer, Irriga always been recognised that it is greatest degree of control with the by no means a simple matter to maintenance of uniform tempera Concomitantly there is the develop Knight for public sorvices to that Communications. Trag, and W. W. translate its latent sergy into the tures over long periods. Approximent of a high temperature with Stats, and Mr. F. W. Dean, late: Dale, engineering assistant tar several forras for which industry mating to the nature of a gas, it its high radiative efficiency, whica has wide applications.
admits of combustion with min constitutes the best means of heat On the other hand gaseous fuels,mum air, the higher temperatures. though relatively scarce in nature,chus attained leading to higher off- and therefore mainly the products ciency of heating than with solid of some artificial operation, dofuels.
Fuels in the of more uniform combustion. The stream of oil delivered from the ferred on Lieut. Col. the Right, B. S. Cohen, staff engineer, Re
transfer.
With the reduced amount of ni
also the maintenance of an atmos required for combustion there. 1s
phere with as oxidising tenden
· SOME APPLICATIONS.
offor some considerable advantages The process of combustion, more. over solid fuels. Quite indepen over, is of an extremely flexible bies, with the reduction of metal dently of their cleanliness in com-type. Changes of temperature car losses in the operations of anneal be quickly effected. Furnacea can ing and others of a similar type. bustion, the absence of ash and the be brought up to desired temperat
The production of this oil misi more mechanical handling, to which ture from the cold state much more they are susceptible, it may be con rapidly than with solid fuel. Simior atomisation in an all-important Jarly the cutting off of the oil leads feature of oil burners. This break- tended, that their chief attraction to the avoidance of standby lpsses." lies in the fact that they may be
The absence of smoke and asling down of the original oil stream barned with a minimum of air, this provides an advantageous contrast is effected mechanically by devices condition tending to the production to the common troubles attendant which bring about extreme attenua of maximum temperatures of com-upon the use of coal, with the elition, or by the application of air bustion with the relatively higher mination of definite equipment for rate of heat transfer. With this the satisfactory removal of the or steam under pressure. small volume of air there is also the ashes which, with a steam plane of greater intimacy of mixture and any dimensions, constitutes a pro the relatively small proportion of blem with a definite items of cost. inert material in the form of nitro- The case with which the oil can be gen which only serves to reduce the mechanically handled, with the at temperature of combustion and, tendant considerably reduced labour carry away from the scene of com-cosis, and the applicability of the bustion an appreciable proportion system to henting operations of all principles in the design of the types and capacities, make claim plant. In the "Urquhart." sys of the generated heat.
to consideration in numerous extem, atomisation in affected eithet In any case the combustion of gaseous fuel is a much simpler amples of heat development in proposition than that of the com- which solid fuels have not been al bustion of a solid, in the latter; together successful. cane a relatively large exceBA nir being necessary.
Some recognition of the advan tages of faela readily brought into a condition comparable with that of
of
In the modern oil-burning equipment every attention has been given to the embodiment of these
by the pressure jet method, which involves forcing the oil through à At least one other point which fine nozzle by means of a high pres may be urged on behalf of the ex-sure, or by the application of a tended use of oil is the fact that medium pressure of either air or under present-day conditions it hasteam. The former principle, a become possible to guarantee raga more commonly adopted in steam- 2 RBA is evidenced by the progress lar and prompt deliveries of oil, raising equipment, while for the which has recently been attained in thue dispensing with the need for numerous purposes of industrial the use of pulverised fuel, thus may considerable storage, a matter and domestic work air pressures of adding to the advantage of large
to fill and steam pressures of natural abundance with relatively
8 to 10b per sq. inch are used in low cost, that of the efficient com
the second method. With the high-. bustion associated with gaseous
Pressure jet system adjustability and fuels.
self-cleaning are striking advan ATOMISED OIL."
tages,, each burner being capable of The successes of the application adjustment for oil consumption in- In liquid fuels, however, we have of oil firing in marine work, toge-dependently of the pump pressurO. these advantages in addition to ther with circumstances aluchins
In both systems the design of the others to which reference must now to the location of steam plants re be trade. At least one of these is the small volume occupied by the nit in the light of the accepted
COMPLETE ELECTRICAL INSTALLATIONS
with
C. M. A. CABLES.
Advice and Estimatės given
free on all types of
LIGHTING & POWER INSTALLATION
by an experienced »
ELECTRICAL ENGINEER
retained at our Hong Kong Branch
The General Electric Co. (of China), Ltd.
QUEEN'S BUILDINGS,
HONG KONG.
which will appeat at once to those contemplating the installation of any off-burning equipment,
LOCOMOTIVE WORK.
lative to oil and cool supplies, have burner leads to the development of further advanced the cause of oil a directional, high temperature, and fuel for locomotive work and gen-silent lame which makes for effici- eral steam raising
ent combustion. The whole equip hot includes atomisers and com While we have to look abroad for bustors, blowers supplying the air, the largest application of oil for the controls, and the oil storage. locomotive work, recent experiments In any case some independent pow-] in this country will be fresh iner is required, except in the case the readers' minds It is natural of steam raising after ateam pres that this type of inel should elain are has once been attained. Most consideration in countries in which usually electrical power is avail oil is relatively plentiful and cheap, able, and the consumption as compared with coal. Hence the email. Moreover, the whole of the use of oil locomotives, particularly operations may be controlled by in America, with advantages com- hand or be semi-automatic or com parable with those in marins transpletely automatic.
port.
In numerous examples of the
therman) operations attendant on
the preparation of metals and met.
MECHANICAL ATOMISA- TION.
al manufactures repeated heating In the Thorneycroft "" system: js commonplace. A few of these the oil, drawn from the tank and operations may be onumerated. They fitered, is heated, again fitered, include billet heating, tool and and passed into the combustion tube-rinking, metfi mailing, gal chamber by means of a whirling vanising, plate heating, rivet max chamber into which the oil is ad- ing, welding, ense hardening and mitted through a series of tangenté tempering.
DOMESTIC USES.
al holes, this having the effect of completely pulverising the fuel be- fore entering. the furnace. This is a type of mechanical atomina- From applications which are intion, the air required for combus contestably industrial wo pass by tion being admitted through speci a number of operations, such, for a burgers and air cones, on steam sxample, as those of brewing, bis-being used. These fuel oil sprayers cuit making, sugar refining, and are arranged for maximum outputs tea drying, to what may be regard- up to 1,000lb per hour in the case ed, as more domestic applications. of steam installations, though ro
Among these operations are those coment kilni sprayers of 4,000lb and of cooking and the heating of upwards are also made. buildings such as houses, churches, The system calls for the use of cinemas, schools, hospitals, dairies, very le refractory brickwork, and public buildings. Ia tho Dat this only being required to protect ed States of America large numbers the furnace front. The system has of houses are already provided with been widely applied, a notable.re oilburning Appliances to effect do cont installation being that of the mestic heating processes, while the 'as Almeda, of the Blue Star system is rapidly spreading oven in Line;
superintendent of the Royal Gun and Carriage Factories, Royal Ordnance Factorice, a Companion (Continued un next Page.)
the Director of Dockyards, Ad
miralty. Mr. H. d. Gabby, chief engineer and secretary to the Clov
rament of Bihar and Orissa has been made a Companion of the Order of the Indian Empire.
Use Green Island Cement
for
Constructural Work of
Every Description.
HOW GREEN ISLAND CEMENT IS MADE
13
Green Island Cement is manufactured from hard limestone and clay. It is necessary that these materials should be finely ground in order that they may come into intimate contact with one another in the burning procENE,
The finely pulverised materials are mixed in a certain definite proportion, roughly one. part of clay to three of limestone, and are fed to the Rotary Kilns.
In these kilos they meet the hot gases and flames generated by pulverised coal blown in at the other end of the kilos, and after various chemical actions have taken place, they combine to form Portland Cement Clinker,
The Clinker is ground down with a small percentage of gypsum to regulate the setting time, and Green Island Portland Cement is thus produced.
Although sounding so "simple, in reality the process is an intricate combination of mechanical, physical and chemical operations, needing great skill and care. Nothing but constant and accurate supervision will yield the results so well-known with Green Island Cement, namely, strength, uniformity and reliability.
USE GREEN ISLAND
Issued by the
CEMENT
GREEN ISLAND CEMENT CO., LTD.
2ND FLOOB
EXCHANGE BUILDING,