About Thermal Conductivity of Insulating Slab Apparatus
Thermal Conductivity of Insulating Slab Apparatus:-
The set-up is designed to determine thermal conductivity of insulating materials in the form of slab. The apparatus consists of main central heater and ring guard heater, sandwiched between the specimens. Cooling plates are provided on either side of the specimen. Two identical specimens are clamped between heater that ensures unidirectional heat flow through specimen. The whole assembly is kept in chamber and insulated by ceramic wool insulation around the set-up.
Experimentation:
- 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.)Electricity Supply: 1 Phase, 220 V AC, 2 Amp.Table for set-up support.
Technical Details :
- Specimen Diameter : 180 mm (approx).
- Thickness : 12 mm (approx).
- Central Heater Diameter 100 mm, sandwiched between copper plates.
- Ring Guard Heater : Width 35 mm, sandwiched between copper rings.
- Cooling chamber : Made of Aluminum for water circulation.
- 2 Nos.Insulation : Ceramic wool
- Digital Voltmeter : 0-300 Volt.
- Digital Ammeter : 0-2 Amp
- Variac : 0-230 V, 2 Amp, (2 Nos.)
- One each for central & ring guard heater.Digital Temp.
- Indicator : 0-199.90C, with multi- channel switch Temperature Sensors.
Precision Measurement for Research and EducationEngineered for laboratory environments, the apparatus delivers accurate and repeatable thermal conductivity results for a variety of insulation materials. Its robust and portable construction makes it ideal for engineering colleges, university labs, and research institutes, supporting advanced study and innovation in thermal sciences.
User-Friendly Operation and Safety FeaturesThe digital display, variable voltage control, and on/off switch on the control panel allow straightforward operation. Built-in safety features, such as overheat and fuse protection, ensure secure and uninterrupted testing. Calibration certificates further guarantee measurement reliability.
FAQs of Thermal Conductivity of Insulating Slab Apparatus:
Q: How does the apparatus measure thermal conductivity of insulation slabs?
A: The apparatus determines thermal conductivity by applying controlled heat through a 500 W heater to a test slab (asbestos, glass wool, or custom sample) and recording temperature differences using six thermocouples. Results are displayed digitally, and manual readings can be taken for analysis, following IS:3346 standards.
Q: What materials can be tested using this equipment?
A: This apparatus supports a range of insulation samples, including asbestos, glass wool, and custom insulating slabs, making it versatile for both standard and specialized laboratory experiments.
Q: When should calibration of the apparatus be performed?
A: The instrument is factory calibrated and supplied with a calibration certificate. Recalibration is generally not required for routine educational use, but should be conducted if the apparatus has undergone significant repairs or if accuracy validation is required by institutional standards.
Q: Where is the apparatus typically used?
A: It is widely used in engineering colleges, university laboratories, and research institutes for educational purposes, laboratory experiments, and research projects related to the thermal properties of materials.
Q: What is the procedure for operating the equipment safely?
A: To operate safely, place the sample in the setup, secure all connections, and use the digital controls on the panel to set voltage and activate the heater. Monitor temperature readings using the digital display; overheat and fuse protection mechanisms are in place for safety, but always follow laboratory safety protocols.
Q: Can the device provide reliable measurements for low or high thermal conductivity values?
A: Yes, the apparatus is designed with a measurement range from 0.02 to 0.5 W/mK, offering high accuracy (within 1% of reading) for both low and moderate conductivity insulating materials.
Q: What are the benefits of using this apparatus for laboratory and research work?
A: Using this apparatus allows for precise thermal conductivity measurement of insulation materials, facilitates comparison studies, and ensures data reliabilityimportant for validating research, developing new materials, or academic instruction under standardized testing conditions.