Accordingly, a gasoline evaporator was tried, consisting in the first experiment of a gasoline tank with nine flues, through which steam was passed.
The method of keeping the supply of salt water in the evaporator at a constant level is very efficient and ingenious.
It is very compact, and the various details in connection with it may be described as follows: Steam from the boiler is admitted into the evaporator through a reducing valve at a pressure of about 60 lb.
The steam from the boiler can be regulated by means of a stop valve, and the pressure in the evaporator should not exceed 4 lb.
The Head Examiner, without looking up or desisting from his rapid writing, began to express his deep regret that the author apparently preferred to work an evaporator under a pressure instead of a vacuum.
He became eloquent, describing his tribulations working an evaporatoron a vacuum.
In other words, one kilogramme of motive steam is sufficient to convert into heating steam for the first evaporator 2.
The compressor sucks up the steam from the juice of the first evaporator (which is boiling at the pressure of the atmosphere, without vacuum or effective pressure), compresses it to 1.
Under suitable conditions this evaporator is most economical in its results.
The water vaporizes and is led from the dome of the evaporator to the head of the condenser.
The evaporator consists of a cylindrical vessel having in its lower half a horizontal copper coil connected to the steam supply.
The water level is maintained in the evaporator until it contains a certain amount of salt.
Or another method is to carry the pipe which constitutes the evaporator into the chamber to be cooled.
The coil is the "condenser" and the vessel in which it is enclosed is the "evaporator," and so the cold air produced by the process in the evaporator cools the coil of the condenser.
And even if I could sell them to the evaporator the price paid is so trifling that, I am told, the best a man can do is to earn day-labourer's wages without counting the value of the apples.
Now, don't interrupt to tell me that I should have an up-to-date evaporator and all that sort of thing.
There is no market for them, and the local evaporator can take only a limited supply because of the scarcity of labour.
Between the condenser and evaporator is a valve, which allows the liquid to pass from the one to the other in proper quantities.
The steam generated in the second evaporator does similar duty in a third evaporator.
If the saccharometer shows too great or too little reduction, the matter is easily regulated by varying the steam pressure in the evaporator by means of a valve in the supply pipe.
The evaporator consists of a separate system of six copper tubes, each twelve feet long and three inches in diameter.
Such apples are placed in the water while frozen, the water draws the frost sufficiently to be grated, and passing through the press and evaporator before there is time for chemical change, they are found to make very good jelly.
As the jelly emerges from the evaporator it is transferred to a tub holding some fifty gallons, and by mixing a little therein, any little variations in reduction or in the sweetness or sourness of the fruit used are equalized.
Before the spent lye can be run into the evaporator it is necessary to remove the albuminous impurities and soap and to neutralize the excess alkali to between exactly neutral and 0.
After half crude is obtained the temperature on the evaporator increases, the vacuum increases and the pressure on the condensation drain goes up (using the same amount of live steam).
The mixture is then allowed to settle and the supernatant mixture drawn off and run to the glycerine evaporator feed tank.
The lye should never be fed into the evaporator in the acid condition.
The properly treated lye is then run through the filter press while slightly warm and the filtered lye is fed to the evaporator from the filtered lye tank.
When it first enters the evaporator the lye is about 11deg.
The evaporator consists of a horizontal cylindrical vapor compartment connected with an inclined cylindrical steam chest in which are numerous tubes, or flues, that occupy almost the whole chest.
The resulting heavy liquid then goes to theevaporator to be concentrated into a thick liquor.
Illustration: Hand Cultivator and Scarifier] Unless theevaporator be fitted with some mechanism which will permit all the trays to be lowered simultaneously, the work of changing the trays may seem too irksome to be warranted.
I expect to put in an evaporator and use natural gas for fuel, and think it will pay.
Set your box evaporator on this wall, and mud or plaster it down tight.
Plums are dried in the same manner, except that they are placed in the evaporator at once.
As soon as the plums commence to shrivel all danger of bursting is past, and they may then remain in the evaporator until dry.
These are placed thinly on one of the trays of the evaporator and entered at the lower end of the upper flue.
Before the modern evaporatorcame into use "sugaring off" always occurred at night.
The sap flows into one end of the evaporator and follows a zigzag path through the different sections.
I gather exactly in season, wash carefully if water dare be used, clean them otherwise if not, and dry them by a hot air system in anevaporator I built purposely.
I can use a rake, and dried in the evaporator you bring me ten cents a pound; to the folks needing a tonic you are worth a small fortune.
The capacity and efficiency of an evaporator depends upon a good many factors, some of which are worthy of discussion at this point.
Another feature of the modern evaporator is the "heater" or "calorifier," by which the liquor to be evaporated is led in a continuous rapid stream through heated tubes immediately prior to its entry into the first effect.
In practice the working of an evaporator is often not a very difficult matter, and large numbers of machines are operated by unskilled labour.
Steam generated from the spent bark is used to heat the extracting vats, and to work a vacuum pan orevaporator whereby more water can be used and a more complete as well as a more rapid extraction obtained.
The evaporator also makes easy the preparation of the strong liquors used in modern tanning.
An evaporator should have its heating surface area chosen with a view to the duty required of it.
A multiple-effect evaporator is usually employed, and the concentrated liquor, which has a strength of about 25 deg.
The latest method is to treat the tan liquor in a "triple-effect" evaporator (Fig.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "evaporator" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: atomizer; drier; retort; spray; still
