Heat


Radiant Heat Source, Low Voltage

Code: PHHE0241

Provides a low voltage heat radiation source operating on 12V with a current rating of about 8A. Heating coil wound on an insulated former and suspended in a U shaped aluminum enclosure through pillars and is connected to 4mm sockets for electrical connection. The enclosure has lining of heat resistance material on the outside and an aperture of about 28mm. The complete assembly is mounted on a metal rod 150×8mm for supporting the apparatus on a suitable retort stand.

Radiant Heat Source

Code: PHHE0245

This ergonomically designed, rugged, and safe radiant heat source has been introduced to offer a more efficient source of radiant heat. Concentrated by the special filament to give 90% radiant heat – unlike ceramic type heat sources...! The unit is fully enclosed apart from the safety grill, double insulated and with a heavy board base reduces the risk of accidentally tipping this unit over. An additional safety feature is that the unidirectional source ensures that the radiant heat is only directed at the point at which it is required. • Power: 150W • Mains input: 230V nominal, 50 to 60 Hz • Source: Infrared glass 100nm lamp • Dimensions: L200xW130xH2700mm • Weight: 1.7Kg • Manufactured within the EEC, CE marked

Joule Meter, Mounted

Code: PHHE0249

A modified single phase, 2 wire watt-hour meter adapted for low voltage working and directly calibrated in Joules (J). Mounted on a wooden bench stand with non-skid base, which also has 2 pairs of 4mm socket terminals, clearly marked for supply and load. The aluminium disc rotates once every 100J consumed, total consumption indicated on rotating digits display with 1st, 2nd and 3rd readings from the left representing 100, 1000 and 10000J respectively to a total of 99,900J. The inter-digit spacing in the left most reading is further subdivided in 10 divisions to approximate the reading to 10J. Designed for use on 12V, 50Hz AC supply with a maximum current of 8.33A. Meter enclosed in transparent casing to facilitate the observation of actual movement of the meter.

Platinum Resistance Thermometer

Code: PHHE0253

Demonstrates the principle of platinum resistance thermometry and its application in precise temperature measurements using a bridge method such as 'Cary-Foster' bridge. It comprises a length of fine platinum wire wound non-inductively on a mica frame and soldered to copper leads. Also provided with a pair of compensating leads, with all the four wires terminating in 4mm terminals at the top. Complete assembly enclosed in a borosilicate tube sealed at the top. Since the connections are soft soldered, the resistance thermometer is suitable for low temperature work up to 150°C.

Heat & Temperature Kit (How Heat Flows – Investigating)

Code: PHHE0257

Explore various aspects of heat, temperature and heat transfer to gain understanding of the related concepts through this series of hands-on activities kit, which includes Exploring means of heat transfer – conduction, convection and radiation Investigating heat and phase changes of matter Understanding the differences between heat and temperature Understanding the concepts of heat flow and conservation of heat energy Determining of specific heat and latent heat of fusion and vaporization of different substances Studying the concepts and properties of thermometers Studying the concepts of radiometer Exploring the conductivity of heat through different substances Applying the above concepts to identify which are thermal conductors or insulators The complete kit is supplied with following items Calorimeter - 1 No. Ring & Ball, Double Handle - 1 No. Thermal Conductivity App., Star Type - 1 No. Crooke's Radiometer, Single - 1 No. Aluminum Cube, 20mm - 1 No. Thermometer, -10 to 110°C, Red Spirit - 6 Nos. Plastic Ruler, 6" - 5 Nos.

Hypsometer, Regnaults

Code: PHHE0261

For determining the upper fixed point of thermometers and boiling points at Barometric pressures other than the atmospheric pressure. Comprising a double walled upper cylindrical boiling vessel with a steam jacketed inner tube, mounted on a stem boiler. A lid with a tubule is provided at the top, which holds thermometer under test through a holed rubber bung mounted in the tubule. Fitted with a side outlet draining tube and a glass manometric tube 1060480/2 Hypsometer, all sheet metal components of GI sheet, finished in hammer tone.

Hope's Apparatus

Code: PHHE0265

To demonstrate that the maximum density of water is at 4°C. Comprises of cylindrical vessel of sheet metal mounted on a base and has an annular trough encircling about midway along its length, which is used for placing ice and salt mixture. Fitted with tubulures to carry thermometers and rubber stoppers. 1060500/2 Hope's Apparatus, Superior, in bigger size

Conductivity Apparatus, Ingen-Hausz's

Code: PHHE0269

For the comparison of conductivity of different metal rods. The apparatus consists of six metal rods, one each of copper, iron, lead, aluminum, steel and zinc of size about 150 × 3mm (length × diameter) fixed horizontally through holed rubber bungs inside a sheet metal trough of size about 150×90×100mm. (length × width × height) having six holes on one side. All metal rods have their one end deep inside the trough while other end projecting outside. In use, the rods are lightly coated with paraffin wax and water in the trough is heated. The rates of melting of respective rods can be compared to know their relative conductivities. 1060520/2 Conductivity Apparatus, Ingen Hausz's, with an insulated wooden handle

Steam Boiler

Code: PHHE0277

Used as a source of steam, wherever needed in the experiments. Comprises a cylindrical copper body with a conical top having short neck for sealing the mouth at the top using rubber bung, and is fitted with a nozzle for steam outlet and loop handle. A transparent plastic tube connected vertically to the reservoir through small L-shaped tubules near top and bottom indicates water level to prevent dry heating of the boiler. Capacity – 2 liters. 1060880/2 Steam Boiler, deluxe model, superior design in thicker gauge copper sheet – more durable and sturdy construction

Steam Boiler

Code: PHHE0281

Used as a source of steam, wherever needed in the experiments. Comprises a cylindrical copper body with a conical top having short neck for sealing the mouth at the top using rubber bung, and is fitted with a nozzle for steam outlet and loop handle. A transparent plastic tube connected vertically to the reservoir through small L-shaped tubules near top and bottom indicates water level to prevent dry heating of the boiler. Capacity – 2 liters. 1060880/3 Steam Boiler, GI Sheet, economical design

Steam Boiler

Code: PHHE0285

Used as a source of steam, wherever needed in the experiments. Comprises a cylindrical copper body with a conical top having short neck for sealing the mouth at the top using rubber bung, and is fitted with a nozzle for steam outlet and loop handle. A transparent plastic tube connected vertically to the reservoir through small L-shaped tubules near top and bottom indicates water level to prevent dry heating of the boiler. Capacity – 2 liters. 1060880/4 STEAM HEATER: Special design made from thick copper sheet, having filling tube, ebonite collar, steam vent, and vertical tube terminating in chute passing through the side of vessel. A brass tube sliding fits in the central tube to carry thermometer. Lower end cut at an angle to seal the chute.

Thermopile

Code: PHHE0293

Demonstrates the generation of thermo emf in accordance to the Seebeck effect. Comprises a number of Bismuth (Bi) and Antimony (Sb) couples joined together in series and mounted in an annular metal ring with insulation between them. The Bi-Sb junctions in the metal ring are arranged in the rectangular fashion forming the sensitive area that comprises only of hot junctions, the cold junctions being the thick walled metal body. Terminals provided for electrical connection. A sheet metal conical funnel has a polished inner surface to facilitate the focusing of radiant heat on to the pile junctions and is fitted over the sensitive end of the metal ring to increase the directional sensitivity and to minimize cooling of the pile junctions by extraneous air currents. The complete apparatus mounted on a stable cast metal base through a plated metal rod. Configurations available are 24 pairs of Bismuth and Antimony Poles

Simple Thermocouple, Copper-Constantan

Code: PHHE0297

Comprises of two wires about 300mm long, one each of copper and constantan joined together properly by twisting them and brazing the joint.

Thermocouple, Copper- Iron

Code: PHHE0301

Copper and iron wires, four each joined alternately in V-shape by twisting and brazing together to form a total of seven junctions, four on the outer side and three on the inner side. With brass connectors for electrical connection.
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