prediction and management of emergent noise - cstb · prediction and management of emergent noise...
Post on 06-Sep-2018
220 Views
Preview:
TRANSCRIPT
Jérôme DEFRANCE, Romain DUMOULIN
Prediction and management of emergent noise
in the tomorrow’s sustainable city
2
Context
• Triple crisis: energy / ecology / economy
• Health, comfort & social stakes
• CSTB research program on Sustainable Cities
• “Prediction and management of urban noise (2050)”
• Need of sound emission DB of building equipments
INTERNOISE 2010 │ June 13-16 │ Lisbon, Portugal | Emergent noise in the tomorrow’s sustainable city
3
Studied site
Cours Jean-Jaurès, Grenoble
The “straightest” Avenue
In Europe (8km)
INTERNOISE 2010 │ June 13-16 │ Lisbon, Portugal | Emergent noise in the tomorrow’s sustainable city
4
Studied site
Model
MITHRA
INTERNOISE 2010 │ June 13-16 │ Lisbon, Portugal | Emergent noise in the tomorrow’s sustainable city
Leq Nuit : 62,2 dB(A)
Leq Soirée : 67,3 dB(A) Leq Petit Matin : 67,3 dB(A)
35
40
45
50
55
60
65
70
75
80
85
90
95
19:1
2:00
19:4
0:48
20:0
9:36
20:3
8:24
21:0
7:12
21:3
6:00
22:0
4:48
22:3
3:36
23:0
2:24
23:3
1:12
00:0
0:00
00:2
8:48
00:5
7:36
01:2
6:24
01:5
5:12
02:2
4:00
02:5
2:48
03:2
1:36
03:5
0:24
04:1
9:12
04:4
8:00
05:1
6:48
05:4
5:36
06:1
4:24
06:4
3:12
07:1
2:00
07:4
0:48
08:0
9:36
08:3
8:24
09:0
7:12
09:3
6:00
temps en hh:min:sec
LA
eq
1s
ec
en
dB
(A)
20 22 6 8 hours
Evening Night Earlymorning
5
Surface transport noise
Possible future scenarios
Scenarios
: HV
: LV
: electric LV “-4dB”
Description Speed Traffic distribution
Current 50 km/h : 9% (5%) : 91% : 0 %
Speed reduction 30 : 9% (5%) : 91% : 0 %
Electric LV with HV 50 : 9% : 0% : 100 %
Current. No HV 50 : 0% : 100% : 0 %
Scenario 2 50 : 0% : 0% : 100 %
Scenario 3 30 : 0% : 0% : 100 %
Joël LELONG, Roger MICHELET, “Passenger cars.
Power unit and tyre-road noise, driving behaviour:
what are the stakes ?” (2001)
INTERNOISE 2010 │ June 13-16 │ Lisbon, Portugal | Emergent noise in the tomorrow’s sustainable city
6
Noisy building equipments
• Heat pumps (avenue side)
• Heat pumps (backyard side)
• MEV (Mechanical Extract Ventilation) (roof)
• Wind turbines (roof)
INTERNOISE 2010 │ June 13-16 │ Lisbon, Portugal | Emergent noise in the tomorrow’s sustainable city
7
Noisy energy building equipments
• Heat pumps (avenue side)
• Heat pumps (backyard side)
• MEV (Mechanical Extract Ventilation) (roof)
• Wind turbines (roof)
INTERNOISE 2010 │ June 13-16 │ Lisbon, Portugal | Emergent noise in the tomorrow’s sustainable city
8
Heat pumps
Noise emission
Altherma Heat pump by Daikin
Values given by the CETIAT
(Centre technique des industries
aérauliques et thermiques)
Lw = 64 dB(A)
INTERNOISE 2010 │ June 13-16 │ Lisbon, Portugal | Emergent noise in the tomorrow’s sustainable city
MITHRA
9
25 heat pumps on Boulevard façade working 100% time
Results – Heat pumps
Emergences
INTERNOISE 2010 │ June 13-16 │ Lisbon, Portugal | Emergent noise in the tomorrow’s sustainable city
10
Noisy building equipments
• Heat pumps (avenue side)
• Heat pumps (backyard side)
• MEV (Mechanical Extract Ventilation) (roof)
• Wind turbines (roof)
INTERNOISE 2010 │ June 13-16 │ Lisbon, Portugal | Emergent noise in the tomorrow’s sustainable city
11
110 heat pumps on Backyard façade working 100% time
Results – Heat pumps
Emergences
INTERNOISE 2010 │ June 13-16 │ Lisbon, Portugal | Emergent noise in the tomorrow’s sustainable city
12
Emergences at the 3rd floor on backyardPumps on Backyard façade working 100% time
Results – Heat pumps
Emergences vs number of pumps
INTERNOISE 2010 │ June 13-16 │ Lisbon, Portugal | Emergent noise in the tomorrow’s sustainable city
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
0102030405060708090100110
Number of heat pumps installed on the backyard façade '
Day Early morning & even. Night
Night 30 km/h Night Scenario 2 Night Scenario 3
13
Noisy building equipments
• Heat pumps (avenue side)
• Heat pumps (backyard side)
• MEV (Mechanical Extract Ventilation) (roof)
• Wind turbines (roof)
INTERNOISE 2010 │ June 13-16 │ Lisbon, Portugal | Emergent noise in the tomorrow’s sustainable city
14
MEV
Noise emission
INTERNOISE 2010 │ June 13-16 │ Lisbon, Portugal | Emergent noise in the tomorrow’s sustainable city
Development of double-flow systems
Model CVEC 240 by Aldes (10 flats)
Model VEC 321B by Aldes (20 flats)
Lw = 63.6 dB(A)
Lw = 70.6 dB(A)
MITHRA
15
1 MEV per flat working 100% time
Results – MEV
Emergences
INTERNOISE 2010 │ June 13-16 │ Lisbon, Portugal | Emergent noise in the tomorrow’s sustainable city
16
Noisy building equipments
• Heat pumps (avenue side)
• Heat pumps (backyard side)
• MEV (Mechanical Extract Ventilation) (roof)
• Wind turbines (roof)
INTERNOISE 2010 │ June 13-16 │ Lisbon, Portugal | Emergent noise in the tomorrow’s sustainable city
17
Wind turbines
Noise emission
Quiet Revolution
Institute of Sound and Vibration Research Consulting,
Wind turbine noise measurements (2007)
Lw = 78,3 dB(A)
INTERNOISE 2010 │ June 13-16 │ Lisbon, Portugal | Emergent noise in the tomorrow’s sustainable city
MITHRA
Report on the feasibility study WINEUR (2007)
18
Emergences for 3 Quiet Revolution wind turbines
Results - Wind turbines
Emergences
INTERNOISE 2010 │ June 13-16 │ Lisbon, Portugal | Emergent noise in the tomorrow’s sustainable city
MITHRA
19
Emergences at the 5th floor on backyard side
Results - Wind turbines
Emergences
INTERNOISE 2010 │ June 13-16 │ Lisbon, Portugal | Emergent noise in the tomorrow’s sustainable city
20
Conclusions
• Large parametric study vs possible future traffic
scenarios and noisy energy building equipments
• Heat pumps:
• Max emergences < 3 dB(A) when located on boulevard façade
• Very high max emergences on backyard side when loc. on backayrd façade
• MEV, 1 per flat:
• Max emergences < 3 dB(A) on boulevard façade
• Max emergences from 2 to 12 dB(A) on backyard side
• 3 wind turbines, night:
• 5th floor backyard: Max emergences > 6 dB(A), up to 20 dB(A)
• Avenue: Max emergences < 2 dB(A)
INTERNOISE 2010 │ June 13-16 │ Emergent noise in the tomorrow’s sustainable city
21
Perspectives
• Database of sound emissions and signals
• 3D sound restitution
• Bi-aural listening
• Perceptive approach
INTERNOISE 2010 │ June 13-16 │ Lisbon, Portugal | Emergent noise in the tomorrow’s sustainable city
22
Thank you for your attention
Cours Jean-Jaurès,
Grenoble, 1916
INTERNOISE 2010 │ June 13-16 │ Lisbon, Portugal | Emergent noise in the tomorrow’s sustainable city
top related