This apparatus is a specialized double wall calorimeter designed for accurate measurement of heat changes (heat capacity, specific heat, heat of reaction) in laboratory experiments. It utilizes the standard method of mixing substances while minimizing heat loss to the surroundings. The double wall construction features an inner copper vessel held within a larger, insulated outer jacket (often air or vacuum filled), which acts as a thermal barrier to achieve near adiabatic conditions. Additionally, this electric model includes a built in electric heater and typically a thermometer hole and stirrer, allowing for precise control and measurement of heat energy added to the system, crucial for determining the electrical equivalent of heat or the specific heat of liquids.
Double Wall Insulation: Features an air or vacuum space between the inner and outer vessels to significantly reduce heat exchange with the external environment, ensuring high measurement accuracy.
Integrated Electric Heater: Includes a low voltage heating coil of known resistance, allowing for the precise introduction and measurement of heat energy (Q equals I squared R T).
Accurate Measurement: Designed to minimize the sources of error in calorimetry, making it an ideal tool for advanced experiments requiring high thermal isolation.
Complete System: Equipped with a lid that includes ports for an electric stirrer (to ensure uniform temperature) and a thermometer or temperature sensor.
Durable Construction: Both inner and outer vessels are typically made of polished copper or aluminum, providing excellent thermal conductivity within the inner vessel and a low emissivity surface for the outer jacket.
Apparatus Type: Double wall insulated vessel with integrated heating coil.
Vessel Material: Inner and outer vessels typically made of polished Copper or Aluminum.
Heating Coil: Resistance typically between 1 ohm and 10 ohm, requiring a low voltage power supply (e.g., 6 V or 12 V DC).
Capacity: Varies by model, commonly 250ml or 500ml capacity for the inner vessel.
Accessories: Includes a lid, stirrer, and terminals for heater connection.
