Q: In the heating and heat tracing scenarios of saltpeter tanks and oil tanks, what should be confirmed first when selecting the RG-15 heat pipe heat exchanger?
A: Confirm the matching relationship between the heat pipe operating temperature and the working fluid. The heat pipe operating temperature should be lower than the critical temperature of its working fluid and higher than the freezing point, so as to avoid degradation of heat transfer performance. During selection, it is necessary to calculate the temperature boundaries of the heat pipe at each stage of startup, stable operation, and shutdown-restart based on the actual operating temperature range of the tank, ensuring that the working fluid always remains within the effective working range.
Q: What impact does medium corrosiveness have on the selection of the RG-15 heat pipe heat exchanger?
A: The combination of tube material and working fluid should be determined based on medium corrosiveness, operating temperature, and compatibility test data. In scenarios such as saltpeter tanks and acid-base tanks, the medium may corrode the shell material or react with the working fluid to generate non-condensable gases, leading to attenuation of heat transfer performance. During selection, the compatibility test data of the shell and working fluid should be verified to avoid the generation of non-condensable gases.
Q: In oil tank heating and heat tracing scenarios, how should the installation method and heat transfer structure be selected?
A: Oil tank heating requires attention to the thermal coupling method between the heat pipe and the tank. The RG-15 heat pipe heat exchanger can be arranged in an immersion type or jacket type according to the tank structure. During selection, it is necessary to calculate the heat flux on the heat pipe surface and the allowable local temperature upper limit of the oil to prevent local overheating and coking of the oil. At the same time, confirm the inclination angle of the heat pipe and the position of the condensation section to ensure smooth reflux of the condensate.
Q: Under the insulation conditions of water tanks and saltpeter tanks, what other parameters need to be checked?
A: It is necessary to check the matching between the heat pipe startup temperature and the insulation requirements of the tank. In water tank scenarios, the lower limit of the heat pipe operating temperature should be higher than the freezing point of water to avoid low-temperature freezing affecting startup. Under the insulation conditions of saltpeter tanks, it is necessary to confirm whether the thermal response time of the heat pipe under intermittent operation mode matches the heat loss rate of the tank, so as to avoid heat transfer fluctuations caused by frequent start-stop cycles.
