First, the core principle cognition before the transformation

The core of the thermal system of the Kaiyuan calorimeter lies in the precise control of heat transfer and reaction environment, and the premise of thermal transformation is to understand its heat conduction logic. It is necessary to clarify the heat interaction relationship of the core components such as the oxygen bomb, inner cylinder, and outer cylinder of the instrument. Only by mastering the principle of heat balance can we carry out targeted transformation to avoid blind operation and damage to the instrument.

II. Detailed explanation of key transformation steps

1. Oxygen bomb system upgrade: Oxygen bomb is the core carrier of heat release. When transforming, it is necessary to focus on checking the sealing and pressure resistance of the oxygen bomb. The high-pressure resistant sealing gasket can be replaced to ensure that there is no leakage in oxygen transportation. At the same time, the ignition device is optimized to improve the ignition stability and ensure the accuracy of heat release from the source. This is the basic link of thermal transformation.

2. Heat conduction medium optimization: The heat conduction medium of the calorimeter directly affects the heat transfer efficiency. If the original medium has aging and insufficient thermal conductivity, it needs to be replaced with a special medium with a higher thermal conductivity, and the medium capacity needs to be controlled to ensure that the heat exchange with the inner and outer cylinders reaches a balance, reducing heat loss and improving heat utilization.

3. Temperature control system calibration: Temperature control is the key to thermal transformation, and the temperature control sensor needs to be calibrated to ensure the accuracy of temperature detection. At the same time, adjust the temperature control program, optimize the heating and constant temperature logic, reduce temperature fluctuations, create a stable environment for heat measurement, and avoid temperature deviations affecting the thermal efficiency after transformation.

III. Commissioning and verification after transformation

After the transformation is completed, strict debugging and verification are required. First, the calorific value is measured through the standard material, and the data differences before and after the transformation are compared. If the data stability and accuracy are improved, it means that the transformation is effective. If there is a deviation, it is necessary to re-check the oxygen bomb seal, medium capacity, temperature control accuracy and other links, and repeatedly debug until it reaches the standard to ensure that the thermal efficiency of the open-element calorimeter after the transformation is stable and improved.

IV. Precautions for transformation

The transformation process needs to strictly follow the operating specifications of the instrument and avoid disassembling the core components without permission. When replacing parts, the original factory-adapted model needs to be selected to ensure compatibility. At the same time, after the transformation, the thermal system needs to be regularly maintained to check the status of seals and media to ensure the durability of the transformation effect, so that the instrument can continue to play a stable and efficient thermal performance.