Page 362 - Materials Chemistry, Second Edition

L1644_C08.fm Page 326 Tuesday, October 21, 2003 3:03 PM

Materials and Alkaline
Energy
Components batteries Emissions to air
Emissions to water
Manufacturing Distribution Use
Emissions to soil
Raw Materials

FIGURE 8.10 Flow diagram of the universal remote.

8.3.3 INVENTORY ANALYSIS
To carry out the inventory analysis, real and bibliographic European data have been
considered. For the collection data, the three main steps identified in the preceding
section have been taken into account.

8.3.3.1 Input Data for the Software EIME
The following section summarize the main input data introduced in the software for
characterizing, from an environmental point of view, all the elements directly and
indirectly implicated during manufacturing, distribution and use of the universal
remote.

Manufacturing:
Universal remote total weight (1 unit): 97 g (Figure 8.11 and Table. 8.12)
Processes required for manufacturing 1 unit of the universal remote:
Printed circuit board (PCB) etching process: 0.2 MJ elec/PCB and dissolution of 1.5
g of Cu/PCB
Wave soldering process: 0.7 MJ elec/PCB, 1.1 g of Pb and 1.7 g of Sn
Reflow process: 1.4 MJ elec/PCB, 0.0015 g of Pb/pat and 0.003 g of Sn/pat

Distribution:
750 km in a heavy-duty truck (empty return)
250 km in a light-duty truck (empty return)

Use:
Battery consumption: 2 alkaline batteries of 1.5 V/1.5 years
Battery weight: 24 g/unit
Universal remote lifetime (expected): 10 years

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