ORSAT APPARATUS DOWNLOAD

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Orsat Gas Apparatus - Free download as Word Doc .doc), PDF File .pdf), Text File .txt) or read online for free. orsat. Aim: Determination of exhaust gas analysis by using Orsat apparatus. Apparatus: Orsat apparatus Theory:The combustion products are mainly gaseous. RESULT: Hence we studied the Orsat apparatus for analysis of flue gases. Determination of calorific value of a fuel by Bomb calorimeter. ➢ Flue gas analysis by ORSAT apparatus. ➢ Study of valve timing diagram of Diesel Engine.


Orsat Apparatus Download

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FLUE GAS ANALYSIS - ORSAT APPARATUS INTRODUCTION To have proper control on combustion Download ORSAT APPARATUS. To have proper control on combustion process, an idea about complete or complete combustion of fuel is made by the analysis of flue gas. Thus,. (i) if the gases. The Orsat apparatus is usually limited to the three common constituents of flue gases, and is not suitable for the analysis of a fuel gas. However, in Fig. 1 there is .

The distinguishing features are, that gas may be aspirated through the burette; also t h a t absorption in the pipettes may be accomplished without displacement of the gas volume bymeans of the leveling bottle as is necessary with the usual pipette, so that one introduction of the gas to the pipette suffices, agitation of the reagent being accomplished by means of a simple form of pump, which consists of an orifice formed by a glass tube, to the lower end of which is attached a rubber connection, compression of which causes the reagent to be projected into the confined gas, the pipette containing no glass tubes.

ORSAT APPARATUS

Babb' has recently described an apparatus employing a pipette wherein the gas is bubbled through the reagent. The pipette presented by the author works in an opposite manner, the reagent being sprayed or projected into the gas. Referring to Fig. I , gas enters by a rubber connection marked A , passing through a cotton filter shown, which is attached by tubing to a fitting, B, which takes any strain brought upon the connection.

Gas analysis apparatus Orsat-Fischer

From this point the gas flows to cock C, which is provided with the regular three-way openings, and across the capillary connection i t flows down through the burette, passes a three-way cock, D , a t the bottom, and out by way of the connection E.

The flow of gas through the instrument may be produced by any usual means.

In this way all of the old gas is expelled and an entirely new sample is secured within the burette, after which, by manipulation of cocks C and D , i t is immediately confined, and by turning cock D to the left-hand horizontal position, the passageway to E is closed and a corresponding connection established between the burette and the aspirator bottle.

Then manipulation is precisely the same as with the Orsat apparatus as far as leveling and manipulation of the gas by the aspirator bottle is concerned.

When the cock D is in position for the flow of gas by way of the passage E , it, of course, is closed off in the direction of the aspirator bottle.

When the 1 This Journal, a7, Improved Orsat apparatus. By this means i t is often possible to secure complete absorption by one exposure in the pipette, and it is sometimes convenient when the attendant has other matters requiring his attention, to allow the gas to remain in the pipette while he gives momentary attention to other things, or the manipulation of the absorption process may continue, even if his attention is not directly upon it, which is something impossible with the usual form of pipette.

You are on page 1of 3 Search inside document 2 Determinations of exhaust gas analysis by using Orsat Apparatus Aim: - Determination of exhaust gas analysis by using Orsat apparatus.

Modern Scientific Concern

Apparatus: - Orsat apparatus Theory:The combustion products are mainly gaseous. When a sample is taken for analysis it is usually cooled down to a temperature which is below the saturation temperature of the steam present.

The steam content is therefore not included in the analysis, which is then quoted as the analysis of the dry products.

Since the products are gaseous, it is usual to quote the analysis by volume. An analysis which includes the steam in the exhaust is called a wet analysis.

Practical analysis of combustion products: The most common means of analysis of the combustion products is the Orsat apparatus which is described below: Construction: An Orsats apparatus consists of the following: i A burette ii A gas cleaner iii Four absorption pipettes 1, 2, 3, 4. The pipettes are interconnected by means of a manifold fitted with cocks S1, S2, S3 and S4 and contain different chemicals to absorb carbon dioxide CO2 , carbon monoxide CO and oxygen O2.

Each pipette is also fitted with a number of small glass tubes which provide a greater amount of surface. These tubes are wetted by the absorbing agents and are exposed to the gas under analysis.

The measuring burrette is surrounded by a water jacket to prevent, changes in temperature and density of the gas. The pipettes 1, 2, 3, 4 contain the following chemicals: Pipette 1: Contains KOH caustic soda to absorb CO2 carbon dioxide Pipette 2: Contains an alkaline solution of pyrogallic acid to absorb O2 oxygen Pipette 3, 4 : Contain an acid solution of cuprous chloride to absorb CO carbon monoxide Furthermore the apparatus has a levelling bottle and a three way cock to connect the apparatus either to gases or to atmosphere.

Figure 1: Orsat Apparatus Procedure: cm3 of gas whose analysis is to be made is drawn into the bottle by lowering the levelling bottle. The stop cock S4 is then opened and the whole flue gas is forced to pipette 1.

The gas remains in this pipette for sometime and most of the carbon dioxide is absorbed. The levelling bottle is then lowered to allow the chemical to come to its original level. The volume of gas thus absorbed is read on the scale of the measuring bottle.The gas is then driven over into the pipette C and a similar operation is carried out.

Then manipulation is precisely the same as with the Orsat apparatus as far as leveling and manipulation of the gas by the aspirator bottle is concerned. To analyze the Flue Gas from a combustion system using the Orsat apparatus.

The graduated burette is surrounded by a water-jacket to keep the temperature of the gas constant during the experiment. Requirements 1.

When the cock D is in position for the flow of gas by way of the passage E , it, of course, is closed off in the direction of the aspirator bottle.

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