This bench top unit is used for studying temperature measurement of several commonly used devices as well as understanding related principles.

The unit consists of four types of display and five different other temperature measuring devices.

Heat sources and means for calibration and accuracy comparison of the different devices is also provided.

Instruction manual is also included.

The unit is for demonstration of stirling cycle hot air engine principles.

The engine consists of a large vertical cylinder with heater to generate hot gas. Twin cylinders above the hot gas cylinder generate power. The hot gas cylinder head can be cooled by water from a cooling system. All cylinders are attached to a common shaft. Heater to the hot gas cylinder can be varied.

Instruments are provided for measurement of input power and output power.

The advantage of this design is the ability to bring the engine to operating condition in a short time.

Instruction manual is also included.

The unit is for demonstration of stirling cycle hot air engine.

The engine consists of two cylinders. The first (displacer) cylinder is made of Pyrex glass and is to generate hot air by a resistance heater. The second (power) cylinder is to generate a mechanical power on a fly wheel by hot air from the first cylinder. Air flow passage and phase angle between the two cylinders are such that the expanded cool air from the second cylinder is returned for heating in the first cylinder. The power to the heater can be varied. Cylinder ports allow engine to operate on gasses other than air. Instruments are provided for measurement of input power, and output power.

Instruction manual is also included.

The apparatus is a bench top unit is used for studying the laws of heat transfer by radiation using two alternative energy sources namely a radiant heat source and a light source.

The radiation sources as well as accessories are mounted on a horizontal aluminum profile base frame with track scale.

The radiant heat source employs a heater in a housing. Temperature of the heat source can be controlled. Heat radiation is measured by a radiometer. Metal plates with different surface finishes are fitted with thermocouples to demonstrate effect of emissivity on radiation emitted and received. An adjustable vertical slot aperture plates are also provided to study area factor.

The light source is provided by a lamp in a housing with a glass diffuser. Measurement of light is by a light meter. Filters of varying opacity are supplied.

A service module provides power supply, heater control unit and measuring instruments.

Instruction manual is also included.

The unit is used for studying heat transfer by free and forced convection in a vertical duct.

A heating surface is attached to the middle of the duct. Three types of heating surfaces are available i.e. vertical flat plate, plate with cylinders, and finned plate. A front window is provided for visual observation of the heating surface. Air enters the duct at the bottom duct with flow straightener and escapes via the top. A fan is attached to the top of the duct to induce forced convection. Air velocity is measured by a thermal probe anemometer. Temperatures of hot surface and of air at different points in the duct are measured by thermocouples.

A service module provides power supply, heater control unit, and measuring instruments.

Instruction manual is also included.

This bench top unit is for testing of thermal conductivity of non-metallic materials using guarded hot plates per ISO8302 and ASTM C177-04.

The equipment consists of a central heater with hot plates, a guard ring with heater and hot plates, and two water cooled cold plates. Two specimens are inserted between the hot plates and cold plates. The assembly is encased in a test cabinet with insulation. The cold plates are clamped together to provided a uniform pressure.

A service module provides power supply heater control unit, and measuring instruments.

The unit requires outside water supply.

Instruction manual is also included.

The unit consists of two parts: a multi section bar for linear heat conduction studies, and a metal disc for radial heat conduction studies.

. Linear Heat Conduction Unit.

The unit has 3 sections which can be pressed tightly together. The first section is for heat input where a heater and three temperature sensors at 10 mm interval are installed. The center section has three temperature sensors at 10 mm interval. The last section is a heat sink section where cooling water and two temperature sensors at 20 mm interval are installed.

The center section may be removed and replaced with a smaller heat conduction section or a different heat conduction material. Both replaced sections are without temperature sensors. Matching surfaces of the heat conduction section are accurately finished to minimize conduction resistance and a heat conducting compound may be applied to further reduce resistance. Thermal conductivity of an insulation material can be determined by inserting a thin insulating disc between two heat conduction surfaces.

. Radial Heat Conduction Unit.

The unit consists of a brass disc heated at the center by a heater with cooling water circulating around the periphery. Six temperature sensors are placed along a radius.

    The metallic parts of both linear and radial heat conduction units are effectively insulated inside plastic casings.

. A service module provides power supply, heater control unit, and measuring instruments.

The test unit requires outside water supply for cooling.

Instruction manual is also included.

This is a table top unit for observation of evaporation process in a heated tank.

The unit consists of a transparent tank, enclosed at top and bottom. At the bottom of the tank is a small heating cylinder and a special liquid simulating a fire tube heating water in a boiler. The vapor is condensed by a water cooled condenser at the top of the tank and the condensed liquid returns to the bottom for reboiling.

Instruments are provided for measurement of temperatures, pressure, cooling water flow rate, and input power.

This is a cooling tower demonstration unit.

Water is heated in the storage tank, pumped through a flow meter and sprayed at the top of the tower. The packing in the tower breaks the water into thin films and droplets. The water is cooled mainly by evaporation and drops to the bottom tank. Makeup water is admitted to the storage tank through a float valve. A small blower with a flow control valve is connected to the bottom tank, and air is driven upwards through the column and exhausted at the top.

Instrument are provided for measurement air flow rate, water flow rate, pressure drop across the cooling tower, temperature and moisture of the inlet and outlet air.

Instruction manual is also included.