E n e r g y S a v i n g s i n B u i l d i n g R e s t o r a t i o n
141
Figure 12: Graph of the payback time of various scenarios.
The scenarios 2 and 4 are necessary to achieve the level of insulation required by Italian
law “D.Lgs 192/05” (ITALIAN DECREE n.192, 2005), but both of them are not
economically viable even unacceptable (payback times are longer than the useful life of
interventions); on the contrary, the scenarios 1 and 3 are economically viable.
Conclusions
The case study highlights the importance of energy audit in order to choose the more
advantageous interventions. In fact, the energy audit allows to know the degradation of
the building (envelope and equipment) and to single out the possible action scenarios.
Finally, the energy audit is intended as an instrument of necessary knowledge to draw
up a refurbished plan that is not only related to the planning of timely maintenance.
References
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DESIDERI, U. AND PROIETTI, S., 2002, Analysis of energy consumption in the high
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CORGNATI, S.P., VIAZZO, S. AND FILIPPI, M., 2008, A method for heating
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ARCHIVE OF THE OFFICE CONTRACT, Municipality of Palermo.
(in Italian)
0
5
10
15
20
25
30
35
1
2
3
4
Payback time (years)
Scenario
