Coffee roasting system with roasting and cooling subsystems, and methods for the same

A bean roasting system, comprising:

• a hopper;
• a roasting drum;
• a blower;
• a bean cooler;
• an air exit subsystem configured to receive and treat a first fluid stream from the blower and a second fluid stream from the bean cooler, the air exit subsystem including:
• a heat sink defining two parallel fluid paths including a first fluid path and a second fluid path and including:
• a metal body;
• a first plurality of fins extending from the metal body into the first fluid path;
• and
• a second plurality of fins extending from the metal body into the second fluid path;
• the metal body configured to receive heat from the first fluid path and the second fluid path;
• the first fluid path fluidically coupled to receive the first fluid stream from the blower;
• the second fluid path fluidically coupled to receive the second fluid stream from the bean cooler;
• a filter fluidically coupled to the first fluid path and the second fluid path;
• and
• a controller configured to:
• operate the hopper to transfer a batch of beans to the roasting drum;
• operate the roasting drum and the blower to roast the batch of beans;
• operate the bean cooler to receive and cool the batch of beans;
• and
• operate the air exit subsystem to:
• treat the first fluid stream to extract heat, water vapor, and effluents;
• and
• treat the second fluid stream to extract heat and effluents.