Friends, I am an EE/SW/Controls eng. Please, pardon me of perhaps incorrect terminologies.
I am working on a R&D project: A chemical lab equipment has a 2" long metal pipe enclosed in insulation material. "One end" of the pipe is attached to a heating element and a temperature sensor. My work is controlling the temperature of the pipe. Including mechanical engineers and a chemist, as a controls engineer I am, our group discusses what material the pipe needs to be, either aluminum or copper.
I saw a few YouTube clips that demonstrate aluminum delivers heat faster than copper. In controls perspective, faster delivery means less delay and better control. Thus, my intuition tells to use an aluminum pipe, while others prefer copper for its higher thermal conductivity.
Could someone explain how one is better than another for this case?
The YouTube clip is here.
The pipe contains a section of Gas chromatography "Column", between the "Inlet + trap" to the "Oven". Ideally the temperature has to be the same as the Oven, which changes up to 15'C/sec. Otherwise, we try to keep it at a certain temperature(TBD) other than "Cold spot". The pipe can be a pair of aluminum plates with channels, I thought.