25
Modeling and Control of Intelligent Glazed Facades Mingzhe Liu PhD Student [email protected] SBi Aalborg University [email protected] 1 25/05/2014
Modeling and Control of Intelligent Glazed Facades
Mingzhe Liu PhD Student
Aalborg University
[email protected] 1 25/05/2014
Organisation of model
25/05/2014 [email protected] 5
Glazing
Solar control
Night
insulation
Room model
Visual
comfort
Thermal
comfort
Energy
demand Weather
information
Natural
Ventilation
Indoor
comfort
requirement
Output Model
properties Input
Control strategies
Simplified method interface
25/05/2014 [email protected] 6
Building information Facade information U-value g value
Orientation 0
Building construction Area (m2) U-value Total facade area (m2) 9
Wall west 15 0 Ratio of glazed facade (%) 40,00%
Wall east 15 0 Glazed facade (m2) 2,52 1,4 0,61
Wall north 9 0 Facade frame (m2) 1,08 1,4
Ceilling 15 1E-09 Opaque part of the facade (m2) 5,4 0,366
Floor 15 1E-09 Glazing type 1
Insulation position 1
Blind position 1
Building services Control strategies On/OffIndoor
set-point
Outdoor
set-point Area (m2) 15 Control mode 0
Internal load (W) 150 Control blind 1 24
Heating set-point (°C) 20 Control insulation 1
Cooling set-point (°C) 26 Glare 1
Working time 8 17 Natural ventilation 1 23 12
Mechanical ventilation (l/s per m2) 1,2 Night cooling 1 18 12
lighting 1
Control- occupied hour
25/05/2014 [email protected] 15
Blind cut-off/glare
Natural ventilation/>23°C
Blind closed/>24°C
Cooling/>25°C
Natural ventilation/CO2
Heating/<20°C
Control- unoccupied hour
25/05/2014 [email protected] 16
Night insulation/depend
on heat loss
Blind closed/>25°C
Night cooling
Case study
25/05/2014 [email protected] 18
BR10 2020
Area (m2) 7405 7405
Heat capacity (Wh/Km2) 120 120
Office hour 8-17 8-17
Internal load (W/m2) 10 10
Heating temp (°C) 20 20
Cooling temp (°C) 25 25
Ventilation (l/sm2)
(On office hour) 1,2 1,2
Lighting (W/m2)
(on/off 250Lux) 7 7
U-value opaque wall
(W/Km2) 0,13 0,09
Fan efficiency (kJ/m3) 2 0,5
Heat exchange 0,85 0,85
Infiltration (l/sm2) 0,06 0,03
Glazing ratio- without control_BR10
25/05/2014 [email protected] 25
total
60,66595
64,04106
72,46244
78,32032
83,83193
96,04185
108,8913
122,3169
135,9878
149,7798
0
20
40
60
80
100
120
140
160
180
20% 30% 40% 45% 50% 60% 70% 80% 90% 100%
Ene
rgy
de
man
d K
Wh
/m2
Ratio of glazed facade without control_BR10
heating cooling lighting ventilation
2010
2015
2020
Glazing ratio- with control_BR10
25/05/2014 [email protected] 26
total
54,54015
49,16877
47,30899
47,7191
48,57194
49,67303
51,83446
55,05471
58,7178
62,5055
0
10
20
30
40
50
60
70
20% 30% 40% 45% 50% 60% 70% 80% 90% 100%
Ene
rgy
de
man
d K
Wh
/m2
Ratio of glazed facade with control_BR10
heating cooling lighting ventilation
2010
2015
2020
Glazing ratio- without control_2020
25/05/2014 [email protected] 27
lighting
ventilati
on total
25,3758 3,404543 50,93151
16,89318 3,404543 54,5644
12,26467 3,404543 63,75017
10,98597 3,404543 70,12153
10,19354 3,404543 76,0839
9,058925 3,404543 89,35562
8,464602 3,404543 103,2895
8,266494 3,404543 117,5223
8,176445 3,404543 132,1753
8,032367 3,404543 147,0667
0
20
40
60
80
100
120
140
160
20% 30% 40% 45% 50% 60% 70% 80% 90% 100%
Ene
rgy
de
man
d K
Wh
/m2
Ratio of glazed facade without control_2020
heating cooling lighting ventilation
2015
2020
2010
Glazing ratio- with control_2020
25/05/2014 [email protected] 28
32,12317
35,74741
39,69853
29,71298
25,44768
24,4427
25,18293
25,55966
27,48913
30,43329
34,00393
38,3997
43,18819
0
20% 30% 40% 45% 50% 60% 70% 80% 90% 100%
Ene
rgy
de
man
d K
Wh
/m2
Ratio of glazed facade_2m_with control
heating cooling lighting ventilation
0
5
10
15
20
25
30
35
40
45
20% 30% 40% 45% 50% 60% 70% 80% 90% 100%
Ene
rgy
de
man
d K
Wh
/m2
Ratio of glazed facade with control_2020
heating cooling lighting ventilation
2020
2015
