The setup consists of a heater sandwiched between two sets of slabs. Three types of slabs are provided on either sides of heater, which forms a composite structure. A small hand press frame is provided to ensure the perfect contact between the slabs. A variac is provided for varying the input to the heater and Digital Voltmeter and Digital Ammeter display the heat input. Heat produced by heater flows axially on both the sides. Temperature Sensors are embedded between interfaces of slabs to determine the temperature gradient. The experiment can be conducted at various values of input and calculation can be made accordingly

Experiments

• To determine total thermal resistance and thermal conductivity of composite wall
• To plot temperature gradient along composite wall structure

Utilities Required

• Electricity Supply: 1Phase, 220 V AC, 2 Amp.
• Table for set-up support

The setup is designed and fabricated to study lagging phenomenon in case of pipes. It consists of three concentric pipes of small thickness as compared to diameter and are arranged concentrically, and closed with the help of two discs. Two different insulating materials fill the annuli between the cylinders compactly. Temperature Sensors are fitted to measure the temperature of pipe walls for radial outward heat flow measurement. Inside the inner pipe, a Nichrome wire heater is placed axially. Heat input to the heater is given through a variac and measured by Digital Voltmeter and Digital Ammeter. By varying the heat-input rates, wide range of experiments can be performed

Experiments

• To estimate the actual rate of heat transfer through the composite cylinders from the measured interface temperature of the known value of thermal conductivity of the two insulating materials.
• To determine the effective thermal conductivity of the composite cylinders
• To determine the theoretical temperature profile within the composite cylinders

Utilities Required

• Electricity Supply: 1Phase, 220 V AC, 2 Amp.
• Table for set-up support

It is a super-conducting device and involves the transfer of heat by boiling and condensation of a fluid and hence transfer of heat takes place under nearly isothermal condition. In this apparatus the comparison of heat pipe with the copper pipe as good conductor of heat and with the stainless steel pipe as same material of construction is made. It consists of three identical cylindrical conductors In respect of geometry. One end of these is heated electrically while there are small capacity tanks acting as heat sinks at the other end. The unit consists of a heat pipe a copper pipe and a stainless steel pipe. Temperature sensors are embedded along the length to measure the temperature distribution and the heat transfer rate is noted in terms of the temperature rise in the heat sink tanks.

The performance of the heat pipe as a super-conducting device can be studied well in terms of the temperature distribution along the length at a given instant and can be compared with other two members. Nearly isothermal temperature distribution and fast rise of temperature in heat sink tank reveals the heat pipe superiority over the conventional conductors

Experiments

• To demonstrate the super thermal conductivity of Heat Pipe and to compare its working with best conductor i.e. Copper pipe & Stainless steel pipe as same material of construction.
• To plot the temperature v/s time response of three pipes
• To plot the temperature distribution along the length of three pipes

Utilities Required

• Electricity Supply: 1Phase, 220 V AC, 2 Amp.
• Table for set-up support

Insulating Powder Apparatus is designed to determine the thermal conductivity of insulating powder. The Apparatus consists of two thin-walled concentric copper spheres. Inner sphere houses Nichrome Wire heating coil. Insulating powder is filled between the spheres. Heat flows radially outwards. Temperature sensors at proper positions are fitted to measure surface temperatures of spheres. Heat input to the heater is given through a variac and measured by Digital Voltmeter & Digital Ammeter. By varying the heat input rates, wide range of experiments can be performed

Experiments

• Determination of thermal conductivity of insulating powder
• Comparison of thermal Conductivity of insulating powder at different temperatures

Utilities Required

• Electricity Supply: 1Phase, 220 V AC, 2 Amp.
• Table for set-up support

The experimental set up consists of metal bar, one end of which is heated by an electric heater while the other end of the bar projects inside the cooling water jacket. A cylindrical shell filled with the asbestos insulating powder surrounds the middle portion of the bar. The temperature of the bar is measured at different sections. Heat Input to the heater is given through variac and measured by Digital Voltmeter & Digital Ammeter. By varying the heat input rates, wide range of experiments can be performed. Water under constant head condition is circulated through the jacket and its flow rate and temperature rise is noted.

Experiments

• To plot the temperature distribution along the length of Bar
• To determine the thermal conductivity of given bar at various temperatures

Utilities Required

• Water supply 3 lit/min (approx.)
• Drain
• Electricity Supply: 1 Phase, 220 V AC 2 Amp.
• Table for set-up support

The set-up is designed to determine thermal conductivities of insulating materials in the form of slabs. The apparatus consists of main central heater and ring guard heater, sandwiched between the specimens. Cooling plates are provided on the either side of the specimen. Two identical specimens are clamped between heater ensures unidirectional heat flow through specimen. The whole assembly is kept in chamber and insulated by ceramic wool insulation around the set-up.

Experiments

• Determination of Thermal conductivity of insulating Material in the form of slab
• Study of variation of thermal conductivity of the material with temperature

Utilities Required

• Water supply 5 lit/min (approx.)
• Drain.
• Electricity Supply: I Phase, 220 V AC, 2 Amp.
• Table for set-up support

The present apparatus is designed to determine thermal conductivities of different liquids. The apparatus consists of a heater. The heater heats a thin layer of liquid. A cooling plate removes heat through liquid layer, ensuring unidirectional heat flow. Temperature is measured across the liquid layer and complete assembly is properly insulated. A proper arrangement for changing the liquids is provided. The whole assembly is kept in chamber.

Experiments

• Determination of Thermal conductivity of different liquids and to make a comparative study
• Study of variation of thermal conductivity of different liquids with temperature

Utilities Required

• Water supply 5 lit/min (approx.)
• Drain.
• Electricity Supply: I Phase, 220 V AC, 2 Amp.
• Table for set-up support

The setup is designed to study the heat transfer in a pin fin. It consists of pin type fin fitted in duct. A fan is provided on one side of duct to conduct experiments under forced draft conditions. Airflow rates can be varied with the help of damper provided in the duct. A heater heats one end of fin and heat flows to another end. Heat input to the heater is given through Variac. Digital Temperature Indicator measures temperature distribution along the fin.

Experiments

• To study temperature distribution along the length of fin in both Free & forced convection
• Comparison of theoretical temperature distribution with experimentally obtained distribution

Utilities Required

• Electricity Supply: 1 Phase, 220 V AC, 5 Amp.
• Table for set-up support

The apparatus consists of Blower unit fitted with the test pipe. Nichrome wire heater surrounds the test section. Four Temperature Sensors are embedded on the test section, two placed in the air stream at the entrance and exit of the test section to measure the inlet and outlet air temperature. Test pipe is connected to the delivery side of the blower along with the Orifice to measure flow of air through the pipe. Constant heat flux is given to pipe by an electric heater through a variac and measured by Digital Voltmeter and Digital Ammeter.

Experiments

• To determine average surface heat transfer coefficient for a pipe losing heat by forced convection.
• Comparison of heat transfer coefficient for different airflow rates and heat flow rates.
• To plot surface temperature distribution along the length of pipe

Utilities Required

• Electricity Supply: 1 Phase, 220 V AC, 10Amp.
• Floor area of 1.2mx 0.5m

The setup consists of a brass tube fitted in a rectangular duct in a vertical fashion. The duct is open at the top and bottom, and forms an enclosure and serves the purpose of undisturbed surrounding. One side of the duct is fitted with a transparent good quality Acrylic window for visualization. An electric heating element is kept in the vertical tube that in turns heats the tube surface. The heat is lost from the tube to the surrounding air by natural convection. The temperature of the vertical tube is measure by Temperature Sensors and displayed by a Digital Temperature Indicator with multi-channel switch. The heat input to the heater is measured by a Digital Ammeter and a Digital Voltmeter and is varied by a variac. The tube surface is polished to minimize the radiation losses.

Experiment

• To determine average heat transfer coefficient

Utilities Required

• Electricity Supply: I Phase, 220 V AC, 2 Amp.
• Table for set-up support