In theory the heat pipe sounds great, but in reality no.
I have been playing with heat pipes for cooking for many years and have found that there are issues.
The heat collecting end is too small to collect heat, and the contact surface between the pipe and the meat is also not big enough to be of any significance.
The biggest problem is without the heat pipe, you always insert your thermometer into the center to check temperature, but if you cook with the heat pipe, where do you insert the thermometer to make sure that you have reached safe temperature?
Heat pipes have been in use for many years, in practically every laptop computer to evacuate CPU heat. They are very inexpensive.
dcarch