PSI - Issue 29

Fabio Sciurpi et al. / Procedia Structural Integrity 29 (2020) 16–24 F. Sciurpi et al./ StructuralIntegrity Procedia 00 (2019) 000 – 000

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Room dimensions: - Plant surface: 34 m 2 - Volume: 217 m 3

Architectural features: no external walls; one skylight without external solar shading; not insulated pitched roof.

Room XXVIII

Technical system: fan coils system to control air temperature; direct artificial lighting of the room with tubular fluorescent lamps; no light inside showcases.

Object Exposed: anatomical waxes.

Room dimensions: - Plant surface: 46 m 2 - Volume: 164 m 3 Architectural features: two windows (one NW and one NE oriented) with external and internal solar shading; two external walls (NW and NE oriented) and not insulated pitched roof. For one-yearmonitoring, the time profiles of meandaily temperature measured in the rooms X, XXII andXXVIII are presentedand comparedwith the correspondingoutdoor values (OUT) (Fig. 2).

10 15 20 25 30 35 40 45

OUT

Room X

Room XXII

Room XXVIII

Temperature ( ° C)

0 5

01/05/2012 00.00

11/05/2012 17.45

22/05/2012 11.30

02/06/2012 05.15

12/06/2012 23.00

23/06/2012 16.45

04/07/2012 10.30

15/07/2012 04.15

25/07/2012 22.00

05/08/2012 15.45

16/08/2012 09.30

27/08/2012 03.15

06/09/2012 21.00

17/09/2012 14.45

28/09/2012 08.30

09/10/2012 02.15

19/10/2012 20.00

30/10/2012 13.45

10/11/2012 07.30

21/11/2012 01.15

01/12/2012 19.00

12/12/2012 12.45

23/12/2012 06.30

03/01/2013 00.15

13/01/2013 18.00

24/01/2013 11.45

04/02/2013 05.30

14/02/2013 23.15

25/02/2013 17.00

08/03/2013 10.45

19/03/2013 04.30

29/03/2013 22.15

09/04/2013 16.00

20/04/2013 09.45

Fig. 2. Trend of mean daily temperature measured in rooms X, XXII and XXVIII compared with the outdoor values (OUT).

The analysis of the microclimatic parameters measured shows that temperature and RH conditions, during the monitoringperiod, were not reasonably acceptable for the preservation of thekind of objects exhibited. The temperature andRHtrendare similar for theuncontrolled rooms (XandXXII) and follows the outdoor climate, a lthough very dampened in sudden hourly and daily changes. In spring and autumn indoor temperature and RH are within the recommended range, whereas in summer and in winter temperature is respectively above and below the limits, with an annual PI of 31%, and RH is respectively below and above the limits, with an annual PI of 47%. Regarding the room XXVIII, the fan coils system keeps constant temperature va lues and reduces indirectly RH varia tions, except when thesystem is notworking: in these moments the values area ligned to thoseof theother rooms, with consequentmaximumdaily gradient of temperatureof 6.6°C. Moreover, variations in the temperaturevalues can a lso be due to the presenceof anunlocked thermostat that canbe easily reachedby visitors. Particularly significant are thevalues of temperature inside the showcase in the RoomX(Xs) tha t aresimilar to the ones in the room (Fig. 3).