The system is economical in fuel, but needs skilled attendance to keep the appliances and fittings in order.
An economical method of evaporation must be found.
It would be economical, therefore, to make the girder very deep. This, however, involves a much heavier web, and therefore for any type of girder there must be a ratio of depth to span which is most economical.
Turrettini did much to increase the economical prosperity of the city.
In the choice of a boiler of this description it should be remembered that rapid heating, economical combustion of fuel, and facilities for cleaning, are requisites, the absence of any of which considerably lowers the efficiency of the apparatus.
It is one of the most rapid and economical which can be employed in soft formations, but where hard rock is encountered it is almost useless.
For ordinary metallurgical work the electric furnace, requiring as it does (excepting where waterfalls or other cheap sources of power are available) the intervention of the boiler and steam-engine, or of the gas or oil engine, with a consequent loss of energy, has not usually proved so economical as an ordinary direct fired furnace.
Having the good fortune to serve a king who was both economical and just, he was able to diminish the imposts, to introduce order among the soldiery, and above all, by the ordinances of 1499, to improve the organization of justice.
Now it is well understood that in many positions this system is the simplest and most economical method of bridging.
By building out, which is economical and sometimes necessary.
A Hindu strain is evident in Java and others of the western islands; Moors and Arabs (that is, as the names are used in the archipelago, Mahommedans from various countries between Arabia and India) are found more or less amalgamated with many of the Malay peoples; and the Chinese form, from an economical point of view, one of the most important sections of the community in many of the more civilized districts.
The returns from the copper fields in the state are at present a little over half a million sterling per annum, and would be still greater if it were not for the lack of suitable fuel for smelting purposes, which renders the economical treatment of the ore difficult; the development of the mines is also retarded by the want of easy and cheaper communication with the coast.
It can be moved (by its own locomotive power, if desired) long distances without requiring any complicated means of conveying power to it; and it is rapid in work, fairly economical, and can be adapted to the most varying circumstances.
Dalby, " The Economical Working of Locomotives," Proc. Inst.
Since the mineral occurs in definite veins, a more satisfactory and economical method of working would be that adopted in metalliferous mines, with a vertical shaft, cross-cuts, and levels running along the strike of the vein: the mica could then be extracted by overhead stopping, and the waste material used for filling up the worked-out excavations.
A cell when filled with fresh slices becomes the head of the battery, and where skilled scientific control can be relied upon to regulate the process, the best and most economical way of heating the slices, previous to admitting the hot liquor from the next cell, is by direct steam; but as the slightest inattention or carelessness in the admission of direct steam might have the effect of inverting sugar and thereby causing the loss of some portion of saccharine in the slices, water heaters are generally used, through which water is passed and heated up previous to admission to the freshly-filled cell.
His political and economical pamphlets are almost unmatched as clear presentations of the views of their writer.
The electrolytic parting of gold and silver has been shown to be more economical and free from the objections - such as the poisonous fumes - of the sulphuric acid process.
He had not accustomed himself to economical living; and, when the emoluments of his office were withdrawn, he had barely enough to support his family.
In the manufacturing branches are required skill, and efficient and economical work, both executive and administrative; in the storekeeping part, good arrangement, great care, thorough knowledge of all warlike stores, both in their active and passive state, and scrupulous exactness in the custody, issue and receipt of stores.
From these papers it was found that, in 1887, two secret conferences had taken place between representatives of the Republics, dealing with various political and economical questions.
For moderate spans brick, masonry or concrete can be used without excessive cost, but for longer spans steel is more economical, and for very long spans its use is imperative.
In the practical questions which arose, and in the great debate which was political, economical and moral, she took a very active part.
The line was designed, surveyed and constructed by Turkish engineers - employing Ottoman navvies and labourers - in a highly efficient and economical manner, the average cost per mile having been £3230, although considerable engineering difficulties had to be overcome, especially in the construction of the Haifa branch.
It is more economical Lowerin g to save the men's strength, however, by raising men.
Normandy's apparatus, although economical and producing water of good quality, is very complex in its structure, consisting of very numerous working parts, with elaborate arrangements of pipes, cocks and other fittings.
His labours in the decline of life were chiefly directed to the doctrine of probabilities in reference to practical purposes, and in particular to economical subjects, as, for example, to inoculation, and to the duration of married life in the two sexes, as well as to the relative proportion of male and female births.
It is economical to have one horizontal boom and one polygonal (approximately parabolic) boom.
Prentice, the historian of the Anti-Corn-Law League, who was then editor of the Manchester Times, describes how, in the year 1835, he received for publication in his paper a series of admirably written letters, under the signature of "Libra," discussing commercial and economical questions with rare ability.
In Germany the enterprise came to an end almost entirely with the downfall of Napoleon I.; but in France, where at first more scientific and economical methods of working were introduced, the manufacturers were able to keep the industry alive.
By degrees, however, the progresses of the feudal chiefs to and from Yedo, which at first were simple and economical, developed features of competitive magnificence, and the importance of good roads and suitable accommodation received increased attention.
I desire to speak impartially on this point, and as one not interested in the success or failure of the present economical and social arrangements.
Except in hard rock, the top width of a cutting, and therefore the amount of material to be excavated, increases rapidly with the depth; hence if a cutting exceeds a certain depth, which varies with the particular circumstances, it may be more economical, instead of forming the sides at the slope at which the material of which they are composed will stand, to make them nearly vertical and support the soil with a retaining wall, or to bore a tunnel.
In 1882, at Reading, a gold medal was given for a cream separator for horse power, whilst a prize of roo guineas offered for the most efficient and most economical method of drying hay or corn crops artificially, either before or after being stacked, was not awarded.
He then addressed himself to the French ministers, and had much earnest conversation, especially with Rouher, whom he found well inclined to the economical and commercial principles which he advocated.
Howard at any rate saw clearly what was one of the indispensable requisites for the economical manufacture of fine crystal sugar of good colour - the treatment of saccharine solutions at temperatures very considerably lower than 212° F., which is the temperature of water boiling at normal atmospheric pressure.
He visited all parts of the country himself, and personally encouraged agriculture; he introduced a more economical mode of mining and smelting silver; he favoured the importation of finer breeds of sheep and cattle; and he brought foreign weavers from abroad to teach the Saxons.
When the subscribers in a local area exceed a certain number, or when for some other reason it is not convenient or economical to connect all the subscribers in the area to one exchange, it is usual to divide the area into a number of districts in each of which an exchange is placed, and to connect these district exchanges together by means of " junction circuits."
The majority he obtained on this occasion enabled him, however, to carry through the Army Education Bill, which tended to magyarize the Hungarian portion of the joint army; and another period of comparative calm ensued, during which Banffy attempted to adjust various outstanding financial and economical differences with Austria.
They have for many centuries been the highway of commerce, and afford a cheap and economical means of transport.
It is not economical to force the boiler to work at too high a rate, because it has been practically demonstrated that the boiler efficiency decreases after a certain point, as the rate of combustion increases.
He served in the Curia under five popes and acquired much administrative experience, influence and wealth, although no great power; he was economical in his habits; on occasion he displayed great splendour and lived in a fine palace.
When the mineral is transported by rail or water to concentration or metallurgical works for treatment, or to near or distant markets for sale, provision must be made for the economical loading of railway wagons or vessels, and for the temporary storage of the mineral product.
Cornish pumps are economical in running expenses, provided the driving engine is of proper design and the disadvantages incurred in conveying steam underground are avoided.
Apart from modifications in the details of sugar refining which have come into use in late years, it should be mentioned that loaf sugar made in conical moulds, and sugars made otherwise, to resemble loaf sugar, have practically disappeared from the trade, having been replaced by cube sugar, which is found to be more economical as subject to less waste by grocers and housekeepers, and also less troublesome to buy and sell.
In its economical aspect the vegetation, whether natural or cultivated, is of prime interest.
It became the fashion during these four forty-four years of peace to encourage the industrial years population and to experiment alize in economical re pea~.
The heavy cost involved in the suppression of internal disorders, maladministration,and the hindrances placed in the way of economical development by the semi-independence of the federal Salles.
A valuable account is given of Nehemiah's economical reforms, illustrating the internal social conditions of the period and the general character of the former governors who had been placed in charge (v., cf.
The first ten years of his active reign passed in peace and quiet; agriculture, manufactures and industries were fostered, economical reforms instituted, and the heavy public debt of forty million thalers was steadily reduced.
On the other hand a framed or braced web afforded opportunity for much better arrangement of material, and it very soon became apparent that open web or lattice or braced girders were more economical of material than solid web girders, except for small spans.
In the case of factories the exhaust steam from the engines used for driving the working machinery is made use of and forms the most economical method of heating possible.
This insurgence of the artisans, in a republic which had been remodelled upon economical principles by Giano della Bellas constitution of 1292, reached a climax in 1378, when the Ciompi rebellion placed the city for a few years in the hands of the Lesser Arts.
Specially noteworthy in the Lezioni are the sections on human wants as the foundation of economical theory, on labour as the source of wealth, on personal services as economic factors, and on the united working of the great industrial functions.
This classification is based partly upon special conditions of service, which make some articles more economical to carry than others (with particular reference to the question whether the goods are offered to the companies in car-loads or in small parcels), but chiefly with regard to the commercial value of the article, and its consequent ability to bear a high charge or a low one.
Electric locomotives are in general more economical then either steam or compressed air.
Steam at high pressure exhausting into the atmosphere is still commonly used, but the great power required for raising heavy loads from deep pits at high speeds has brought the question of fuel economy into prominence, and more economical types of the two-cylinder tandem compound class with high initial steam pressure, superheating and condensing, have come in to some extent where the amount of work to be done is sufficient to justify their high initial cost.
On the previous Sunday the old count had given his son two thousand rubles, and though he always disliked speaking of money difficulties had told Nicholas that this was all he could let him have till May, and asked him to be more economical this time.
He appears, however, to have set himself honestly to carry out reforms. The economical condition of Italy evidently excited his alarm and sympathy.
This resulted, indeed, in a fairly economical administration, but nothing could be done on an imposing scale.
This drawback can be corrected to a slight extent by furnishing the hydraulic crane with more than one cylinder, and thus compounding it, but the arrangement does not give the same economical range of load "as in an electric crane.
The development of the theory of structures has been largely directed to determining the arrangements of material which are most economical, especially in the superstructure.