Determination of viscosity of organic solvents theory. The redwood viscometer consist of vertical cylindrical oil cup with an orifice in the centre of its base. Redwood viscometer, 50ml receiving flask, thermometers and stopwatch description of the apparatus. The modified saybolt viscometer was calibrated using a standard oil and can be considered an accurate and precise viscometer.
The viscosity of ea ch liquid found at temperature 50, 55, 60, 65, 70, 75 and 80 o c. Ii for liquids whose flow time exceeds 2000 seconds. Kinematic viscosity is determined by redwood viscometer with help of its constants. Redwood viscometer with its accessories such as a flask, ball valve, heating arrangement, thermometer, stopwatch, oil, etc. Theredwoodviscometer,3whichisstandardinengland,isof the same general efflux type astheengler, of germany,and the saybolt universal, whichhasbeenadopted as standard for lubri. Units of viscosity viscometer types capillary viscometers falling body methods oscillating method ultrasonic methods 30. A viscometer also called viscosimeter is an instrument used to measure the viscosity of a fluid. The material required to conduct the experiment are i redwood viscometer no. Pdf analysis of kinematic viscosity for liquids by varying. Analysis of kinematic viscosity for liquids by varying. The purpose of this experiment is to determine the viscosity with varying temperature of the liquids. Redwood viscometer consists of a cylindrical oil cup furnished with a gauge point, agate.
The redwood viscometer consists of vertical cylindrical oil cup with an orifice in the centre of its base. Convert between centistokes, saybolt and redwood seconds. The oil cup was cleaned neatly and the orifice was closed with the ball valve. Temperature dependent dynamic absolute viscosity of oil. A standard britishtype viscometer in which the viscosity is determined by the time, in seconds, required for a certain quantity of liquid to pass out through the orifice under given conditions. The experiment is carried out on redwood viscometer to analyze viscosity of different liquids at different temperatures. Let the liquid to flow through the capillary tube with run time when the liquid reaches the mark shown on the viscometer and then stopped time when the liquid reaches the bottom mark. Whenever laboratory data obtained were made to find a bestfit correlation due to the demand for mathematical equation of fluid flow for reservoir simulation. Study of dependency of temperature on kinematic viscosity. Finally measure the dependence of the moment of rotation on the frequency in the range of 0. Poiseuille equation for laminar flow can be applied to calculate the viscosity. Viscosity of newtonian and nonnewtonian liquids rotary. The weaknesses of redwood viscometers have been discovered, and much time and thought have been expended upon improvement. Finally it was agreed to accept redwood viscometer no.
The saybolt furol viscometer is the same in principle. Calculate viscosity of crude oil by redwood viscometer semantic. The complete instrument comprises of stove hammer finished shield, stainless steel bath with electrical heating arrangements, suitable to operate on, 220 volts a. Read online applied thermodynamics lab experiments manual. A hook pointing upward serves as a guide mark for filling the oil.
Assignment 2 the principles underpinning development and preparation of resources for learning and development developing resources to meet learning and development. Redwood viscometer article about redwood viscometer by. These viscometerstubes are suitable for measuring transparent liquids. Thus, a rheometer can be considered as a special type of viscometer. Two adaption of red wood viscometer are available no. Determination of viscosity of lubricant by red wood viscometer no.
Viscometers are instruments that can either apply a force and measure a speed, or apply a speed and measure a force, to or from a simple geometry. Determination of viscosity of oil by redwood viscometer. Determination of saybolt, kinematic, and shear viscosity. To determine the kinematic viscosity of a liquid and its verification with temperature. T he common procedure followed in redwood viscometer experiment is as follows. To determine the viscosity of diesel using redwood viscometer at different temperatures. It consists of vertical cylindrical oil cup with an orifice in the center of its. Herschel abstract the redwood viscometer was selected for calibration because there appeared to be some doubt whether or not the instrumental. After each measurement series, clean the viscometer.
Determination of viscosity of liquid lubricants and fuels using. The redwood viscometer consists of vertical cylindrical oil cup with an orifice in the. Engler viscometer viscosity impact civil engineering. Engineering toolbox resources, tools and basic information for engineering and design of technical applications. Dynamic viscosity it is define as the property of fluid. Experimental determination of the density, viscosity and.
The viscometer is available in either redwood orifice no. Buy utube viscometerstubes, type of modified ostwald viscometers from pslrheotek. Redwood viscometer thermometer 0100c 2 nos stop watch 50 ml standard narrow necked flask given sample of oil description. Aircraft energy conversion laboratory manual 06ael57 201112. A redwood viscometer is used to measure the flow of eight. To determine the flash point and fire point of petroleum products by cleveland open cup apparatus. Pdf analysis of kinematic viscosity for liquids by.
Redwood viscometers,redwood viscometers multiple apparatus. Redwood viscometer lab manual by briancordon2668 issuu. A modified saybolt viscometer was used to measure the efflux times for 60ml of methyl esters of canola and soy and ethyl esters of fishoil. The redwood viscometer consist of vertical cylindrical oil cup with an. Determination of relative and kinematic viscosities of a given lubricating oil at different temperatures using redwood. Experiment 1 viscosity measurement purpose the purpose of this experiment is to measure the viscosity of a glycerinwater mixture with a thomasstormer viscometer. Asphalt engler viscometer is commonly used petroleum testing equipment. This might be as simple as a utube viscometer that. Brookfield has a reputation of being the world leader in viscosity measurements for over 80 years providing a variety of laboratory viscometers to suit a wide variety of applications. Put viscometer vertically in the water bath at the desired temperature. The water is taken into the water bath and the oil whose viscosity is to be determined is taken into.
438 223 94 974 470 280 1094 297 653 537 129 1369 956 982 566 1320 1139 1413 1501 1257 274 1212 951 195 1406 1283 318 150 1095 704