1987 Volume 49 Issue 6 Pages 555-562
An energy accounting study was conducted to find possible energy recovery in the production of foods such as bread, spaghetti and rice cracker (senbei).
The energy accounting was restricted to in-plant energy use. Those foods are merle of grain flour and needed thermal operations to be processed. Senbei is one of Japanese traditional and popular cookies made of rice flour.
The energy requirement in the production of bread, spaghetti and senbei was 2.06, 3.33 and 11.43MJ/kg product respectively. Baking used about 40% of the total energy in bread production, and drying in the production of spaghetti and senbei consumed 65.2% and more than half of the total energy respectively.
These energy intensive operations in each of the food productions also rejected a large amount of the thermal energy from an oven and a dryer with exhausted air. Thus, the exhausted air could be a source of the energy recovery and be used for an absorption refrigeration system for a bread cooler which will replace the current refrigeration unit. This problem was left for a future study.
