Utilizing recirculated volatile organic compounds (VOC) off-gasses from the all-natural fuel air-fired dryer to reinforce and lower pure gas usage The images or other 3rd party material in the following paragraphs are A part of the article's Innovative Commons licence, unless indicated normally inside a credit line to the material. https://wasteheatrecovery89000.blazingblog.com/31184966/waste-heat-recovery-an-overview