Environmental Engineering Reference
In-Depth Information
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The system's borders: selection of productive processes and environments;
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High quality and reliability of data (data bank, temporal, geographic and
technological coverage).
The inventory analyse involves the construction of reality analogical model. First of all
the flow-chart including the product system's processes is necessary [14]. Consequently, the
second step is data collection, that is direct surveys, estimations, medium values or values
from literature and data bank. The inventory aim is to get objective data, which, later on,
would be processed in order to take useful assessments for an improvement of processes
analyse (see Figure 11).
The environmental and energetic allocation could be carried out as:
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physical quantity, such as mass, volume and energy;
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economic values of the products.
The results are estimated and associated under their effects on the environment, such as
greenhouse gas effect or stratospheric ozone deletion. Environmental effects can be on global,
regional, local scale: for example GHG effect has global effects, while a noise has local
effects.
Figure 11. Inventory analysis.
