Heating a dry fermentation unit useful for biogas production, comprises using a gas jacket that surrounds at least part of the fermentation chamber and is supplied with a heat transfer gas

摘要

Heating a dry fermentation unit comprises using a gas jacket that surrounds a part of the fermentation chamber and is supplied with a heat transfer gas An Independent claim is also included for apparatus for carrying out the above process, where the walls of the gas jacket are made of gastight film.