F.
The latte product (as one of the highest impact products) is
taken as an example for further analysis. The breakdown of the
stages in the previous figures is show in Figs. 6 and 7 to indicate the
major contributing operations to the EE and PCF respectively. The
processing of coffee through to green beans is the key area of
impact, due to highly inefficient operations and the production of
large amounts of waste water which is often not well utilized
(Adams and Ghaly, 2007). The particularly high level of energy
usage indicates low efficiency in the provision of heat, which could
benefit significantly from the intervention and assistance of coffee
purchasing companies.