Experiments of HEAT
Searls Thermal Conductivity
INSIF P-900 Thermal Conductivity by searls Method OBJECT: TO DETERMINE THE COEFFICIENT OF thermal conductivity of a metal by using Searls apparatus * A) App. 12” x 1” ROD * B) COPPER ROD 12” X 3/4” in box P-900A * It has a copper bar of 25 mm x 300 mm (dia x length) with * a steam jacket heater at one end to be supplied from a steam boiler, * and a copper water cool spiral at the other end. * The bar has tubes for inlet of water and for thermometers. * Fitted in a superior quality wooden case, * with felt for thermal insulation. * A) Apparatus 12” x1 * B) Copper Rod 12” x3/4” in box * provided with constant level tank & * neccessory accessory four thermometers PROCEDURE: Steam is flown from one end & comes out other end on the same side , thus heats up one end & at the other end steady flow of water from constant level tank is maintained
CALENDER AND BARNS APPARATUS
P-695 INSIF
* It has horizontal corning glass tube open at both ends inside of which a heating element coil about 40 cm long made of Nichrome wire , is fitted operatable 6V DC.
* Polished wooden base: It is encased in it with a lined felt & proved with a hinged cover.
* Terminals: are brought at each end of the tube for the electrical supply.
* The horizontal tube: is connected either by rubber tube or rubber cork to the inlet & outlet system, each having a short vertical extension to accommodate a thermometer supplied .
* With constant level tank:(100 x 75 mm dia) fitted with clamp on a tripod stand for maintaining water level
CALORIMETER COPPER
P-697 INSIF
* It consists of a rectangular wooden box fitted with thermometer holder.
* Packed with felt for thermal insulation.
* With copper stirrer
Size :
(i) 2" x 3"
(ii) 3" x 4"
CALORIMETER JOULES
P-698A INSIF
* it consists of a copper vessel of fitted in wooden Box ,
* fitted with Bakelite lid with hole for thermometer &
* stirrer made of copper
sizes:-
.
(i) Copper Vessel 2" x 3"
(ii) Copper Vessel 3" x 4
CLEMENT & DISORMIES APPARATUS
P-708 INSIF
Exp: For determining the ratio of the specific heats of a gas.
* Glass bottle: 10 liters capacity which is fitted in a wooden box.
* The neck of the bottle is fitted with a metal cap.
* The cap is fitted with a bent tube with stop-cock for connection to a pump which is fitted to the side of the wooden box.
* A stop cock for opening to air and a bend for connection to the manometer is provided.
METALLIC CUBE
P-713 INSIF
Exp: Used as sinkers or for specific gravity measurements.
Set of six different metals- brass, alu., copper, zinc, iron & lead.
i) 3/4” with hole for thermometer
(ii) 1" without hole
(iii) 1" with hole for thermometer
METALLIC CYLINDER
(Size : 1" x 12") P-714 INSIF
* Set of six different elements in cylindrical form-
* BRASS, ALUMINUM,COPPER, ZINC,IRON & LEAD.
LATENT HEAT OF STEAM APPARATUS
INSIF P-771 * Comprises a thick brass calorimeter, * a bung with steam inlet & outlet glass tubes, * a felt cover, * complete with 2 litres tin plate boiler * with bung to take the steam tube which connects to the calorimeter, * the assembly is kept on a vertical wooden stand with a platform for calorimeter
LEES AND CHARTON APPARATUS
INSIF P-776 * Exp : For determining the relative conductivity of thin layers of material. Consists of cylindrical slab of brass 11 cms. in diameter and 10.5 mm thick. On this rests a 5 cms. deep hollow cylinder of the same diameter with inlet and outlet tubes for steam. * Both the cylinders Have radial holes for insertion of thermometers. * The material Under test is placed between the two cylinders. * The apparatus is suspended by strings attached to the lower cylinder. * Without thermometers.
LINEAR EXPANSION APPARATUS
INSIF P-777 (HORIZONTAL PATTERN) * it consists of a steam jacket(brass pipe) 50 cm long & 2.5 cm dia with inlet & outlet tubes for steam & opening for a thermometer fitted with speedometer which reads up to 0.01 mm. * The exact setting at which it contacts the rod may be indicated by using an electric contacting circuit, such as a dry cell or buzzer. * Complete with 3 test rods. A) Vertical Linear: brass pipe * Same as above, but steam jacket mounted on vertical stand..
Newton law of cooling App
INSIF P-831 * EXP: to study the relationship between temp Of a body & time as it cools by radiating heat. * A) School Type outer tank made of Brass * A (i) school type outer tank made of G.I. * It consists of two copper calorimeters 2” x 1” resting inside a trough This stands in an outer tank having a wooden top with two holes for thermometers. * Supplied w/o thermometers, But with stirrers. B) University Type Brass * Comprising two units, each having a double walled vessel brass nickel plated with Bakelite cover through which is suspended a 3" x 2" calorimeter. * A second inner covering protects the top of the calorimeter from heat losses. The angular spaces between the double walled vessels are connected by T-Tubes, which enable water at same temperature to be kept circulating through them.
PULLINGER APPARATUS
INSIF P-855 * Consisting of a 1/2 meter long brass tube, with inlet and outlet tubes for steam,and opening for thermometer, * supported in seasoned wood frame, * complete with 3 metal rods. * Without Spherometer and Thermometer.
RING & BALL APPARATUS
INSIF P-884A OJECT: TO DETERMINE THE EXPANSION OF METALS , WHEN HEATED A)Brass Ball with handle * A Brass ball of 18 mm dia secured to a chain & *a brass ring is mounted on a brass rod with wooden handle * B)With Stand C)Ring&GaugeComprising iron bar 10.8 cm long x 11.5 mm dia mounted at its mid point on a rod fitted with wooden handle, and a brass gauge 150 x 28 mm ,
To determine the coefficient of apparent expansion of a liquid with a weight thermometer
P-080 INSIF
Apparatus required::
* weight thermometer,
* balance with weight box,
* thermometer,
* beaker container water,
* hot plat
To determine the coefficient of real expansion of a liquid (water) by up thrust method
P-081 INSIF
Apparatus required:
*A chemical balance,
* weight box,
* glass bulb ,
* thin thread,
* thermometer,
* beaker ,
* small bench /stand
To determine the specific heat of liquid (glycerin) by the method of cooling.
P-082 INSIF
Apparatus required:
* A double walled vessel with liquid.,
* two small calorimeters identical in all respects,
* two thermometers,
* physical balance ,
* weight box,
* glycerine,
* hot plate
To determine the latent heat of steam by Joly’s steam calorimeter
P-083 INSIF To determine the latent heat of steam by Joly’s steam calorimeter.
Apparatus required:
* Joly’s steam calorimeter,
* chemical balance,
* thermometer,
* a small copper piece,
* a piece of fine copper wire ,
* boiler,
To determine the value of Y(the ratio of two specific heats of gas) for air by clement and Desorme’s method
P-084 INSIF.
Apparatus required:
* A large flask of capacity near about 5 or 10 ltrs,
* liquid manometer,
* a compression pump or air below,
* sulphuric acid,
* top lid of flask with three outlets
o determine the value of J, the mechanical equipment of heat by Searle’s apparatus.
P-085 INSIF
Apparatus required:
* Callender & barn’s app.,
* constant heat water arrangement,
* A.C. Transformer,
* A.C. voltmeter and Ammeter,
* two mercury themometers,
* stop watch,
* graduated cylinder,
* beaker,
* weight box,
* physical balance,
* connection wire
To determine the mechanical equipment of heat by using calendar and Berne’s constant flow calorimeter
P-086 INSIF .
Apparatus required:
* step down transformer,
* Rheostat
* Joule’s calorimeter,
* an ammeter,
* a voltmeter,
* a sensitive thermometer,
* physical balance,
* weight box,
* plug key ,
* connecting wire
To determine the mechanical equivalent of heat (J) with the help of searls conductivity
P-087 INSIF .
Apparatus required:
* Searle’s conductivity app.,
* four sensitive thermometers,
* constant pressure water flow arrangement,
* measuring flask,
* stop watch and
* arrangement for generating steam.
To determined the thermal conductivity of rubber in the form of a tube.
P-090 INSIF
Apparatus required:
* Calorimeter, balance,
* weight box,
* stop watch ,
* thermometer,
* steam boiler,
* graduated cylinder,
* rubber tubing,
* wooden screen,
* vernier microscope
To determine the coefficient of thermal conductivity of glass in the form of a tube.
P-091 INSIF
Apparatus required:
* Two given glass tube,
* a wider tube to serve as a steam Jacket,
* constant level water arrangement,
* two sensitive thermometers,
* graduated jar,
* stop watch and
* microscope
To determine the temperature coefficient of resistance for platinum using a platinum resistance thermometer and a calendar and Griffith’ bridge
P92 INSIF
Apparatus required:
* Callender and Griffith’s Bridge,
* platinum resistance thermometer,
* galvanometer,
* connecting wires,
* power supply,
* heating arrangement.
To determine the value of Stefan’s constant
P-093 INSIF .
Apparatus required:
* Stefan’s app.,
* two thermometers,
* sensitive galvanometer,
* stop watch,
* copper flask and
* heater.
To verify Stefan’s law
P-094 INSIF.
Apparatus required:
* battery,
* D.C VOLTMETER 0-10V,
* DC AMMER 0-1 A,
* Electric bulb 6V,
* Rheostat 100 Ohms
To determine the critical temperature and critical pressure of a gas
P-095 INSIF .
Apparatus required:
* A hard glass tube (cylindrical bulb) in which liquid under test is filled. ,
* A manometer,
* thermostat
To measure temperature with the help of Jolly’s constant volume air thermometer
P-096 INSIF .
Apparatus required:
*olly’s constant volume air thermometer,
* wooden stand ,
* beaker with water,
* mercury
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