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Questions and Answers
What is the main objective of conducting the Thermal Conductivity of Insulating Powders experiment?
What is the main objective of conducting the Thermal Conductivity of Insulating Powders experiment?
What is the function of the test module in the Thermal Conductivity of Insulating Powders Unit?
What is the function of the test module in the Thermal Conductivity of Insulating Powders Unit?
What material is used to fabricate the test module for the Thermal Conductivity of Insulating Powders Unit?
What material is used to fabricate the test module for the Thermal Conductivity of Insulating Powders Unit?
How is the heating source provided for each test module in the Thermal Conductivity of Insulating Powders Unit?
How is the heating source provided for each test module in the Thermal Conductivity of Insulating Powders Unit?
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What type of electrical output does the power control circuit provide for the Thermal Conductivity of Insulating Powders Unit?
What type of electrical output does the power control circuit provide for the Thermal Conductivity of Insulating Powders Unit?
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What does the instrumentation provided for the Thermal Conductivity of Insulating Powders Unit permit?
What does the instrumentation provided for the Thermal Conductivity of Insulating Powders Unit permit?
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What is the purpose of the built-in thermocouple in the heater?
What is the purpose of the built-in thermocouple in the heater?
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Which materials have very low thermal conductivity?
Which materials have very low thermal conductivity?
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What is the purpose of using thermal insulators like kaolin and mica?
What is the purpose of using thermal insulators like kaolin and mica?
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What is the function of the control panel's variable transformer?
What is the function of the control panel's variable transformer?
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What type of thermocouples are inserted at six different locations for each test module?
What type of thermocouples are inserted at six different locations for each test module?
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Which component is made of stainless steel and fixed with four wing nuts?
Which component is made of stainless steel and fixed with four wing nuts?
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What is the voltage range of the power transducer?
What is the voltage range of the power transducer?
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What is used to measure the heat input to the heater element?
What is used to measure the heat input to the heater element?
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Study Notes
Objectives of the Experiment
- Main objective is to determine the thermal conductivity of insulating powders.
- Establishes performance characteristics of insulating materials.
Test Module Function
- Acts as the environment where thermal conductivity is measured.
- Facilitates uniform heating and temperature readings.
Material for Test Module
- Test module is fabricated from stainless steel for durability and effective heat transfer.
Heating Source Provision
- Each test module is heated using electrical heating elements controlled by a power supply.
Power Control Circuit Output
- Power control circuit provides a regulated electric output to maintain consistent heating.
Instrumentation Functions
- Instrumentation allows for precise measurement of temperature and heat flow during testing.
- Enables real-time data logging for analysis.
Built-in Thermocouple Purpose
- Built-in thermocouple in the heater measures temperature accurately to ensure effective heating.
Materials with Low Thermal Conductivity
- Kaolin and mica are examples of materials with very low thermal conductivity.
Use of Thermal Insulators
- Insulators like kaolin and mica are employed to minimize heat loss and improve thermal resistance.
Variable Transformer Function
- The control panel's variable transformer adjusts voltage and current to the heating element based on requirements.
Thermocouple Placement
- Type K thermocouples are inserted at six locations in each test module for temperature profiling.
Stainless Steel Component
- The housing of the test module is made of stainless steel and secured with four wing nuts for easy assembly and maintenance.
Voltage Range of Power Transducer
- Voltage range of the power transducer spans from 0 to 300V for versatile testing conditions.
Heat Input Measurement
- A wattmeter is used to measure the heat input to the heater element for accurate energy assessment.
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Description
Test your knowledge on the thermal conductivity of insulating powders in the Chemical Engineering Laboratory II course at the School of Chemical Engineering, Universiti Sains Malaysia. Explore the effects of temperature on the thermal conductivity of materials.
