Coffee Knowledge Hub

SCA Lecture Series

How are roasting results affected by different fuel types?

A study of the effect of different fuel types on roasting results. One of a series of exclusive, free lectures available to Coffee Knowledge Hub members in partnership with the SCA.

Lecture Overview

In recent years, there have been many developments in gas or electrical heated roasters and research into how the energy transfer could be controlled in a better way.

In this lecture, the results of this R&D-work – carried out at the same roaster using different heating systems – will be shown and the main results discussed.

An overview will be given about gas and electrical heating systems from the past until today. Are there still differences between a gas or electrical heated roasting process? Could the same roasting profile be used for both heating systems or will there be changes necessary? Is there a difference in taste and aroma between the two heating systems? This topic was analysed in a lab study by using a chemical taste sensory system which was compared with the result of a cupping panel.

All this data and figures up to the question if there is a different energy consumption for gas vs. electrical heating will be presented to the audience.

Lecturer: Thomas Koziorowski, CTO, Probat-Werke von Gimborn Maschinenfabrik GmbH

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