ABB Smart Home & Intelligent Building Control

Smart Home and Intelligent Building Control Energy Effi ciency in Buildings with ABB i-bus ®  KNX

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2CDC 500 060 M0201 3 Economically and ecologically essential Energy savings in the double-figure percentage range Climate change and growing shortages of resources  are the big challenges of our time. In addition, many  countries around the world are dependent on imported  energy – in the EU, for example, 50 % of energy  consumed today is imported – a figure expected to reach  70 % by 2030. Efficient and sustainable energy usage is  therefore an urgent necessity – fully in accordance with the  motto coined by the European Commission “less is more”. Following the areas of transport and power generation, building  technology is the largest consumer of energy. Heating, cooling  and lighting in residential and office buildings make up  approximately 40 % of the energy consumed in the industrial  nations – a share that leaves a lot of scope for efficient  optimization.  On the European level, this fact has been met with the publication  of a directive relating to the energy performance of buildings  (2002/91/EC). The main demand that it incorporates is the issue  of an energy certificate detailing the energy consumption of the  building as well as analysis of the potential savings. To pave the  way for these measures, a number of European Standards have  been implemented – e.g. EN 15232 – and in Germany a DIN  standard (DIN V 18599) confronts the issue. The central role of intelligent building control Building system engineering supported by intelligent and  networked room and building controllers (lighting, sun  protection, heating, ventilation and air conditioning as well as  the other building engineering systems) contribute significantly  to conservative and requirement-based energy use.  The worldwide standard for KNX technology enables energy  savings in the double-figure percentage range and also  provides enhanced flexibility with planning and implementation,  a high level of investment protection and a high level of  availability. Various concepts and approaches are possible in the  optimisation of energy efficiency in buildings. In this context,  the use of intelligent building control provides a proven and  interesting alternative or addition that is clearly set apart by its  convincing cost-benefit ratio. In this brochure, you will find figures, data and facts, which  clearly indicate the high level of optimisation potential offered  by using ABB i-bus ®  KNX intelligent building control. Optimisation of energy efficiency in buildings means for us  –  Only use energy when it is  really  required –  Only use the amount of energy actually required –  Apply the energy that is used with  the highest possible efficiency 

4  2CDC 500 060 M0201  KNX Research literature “Energy saving potential using modern electrical installation”  The Biberach University of Applied Sciences, Institute  for Building and Energy Systems, specialising in building  automation, carried out literature research on the topic  of “Energy saving potential using modern electrical  installations” in 2008. Headed by Prof. Dr.-Ing. Martin  Becker, the most important sources of literature with the  figures for potential savings they contained were compiled  to an overall result. The study was commissioned by  ZVEI – Zentralverband Elektrotechnik- und Elektronik- industrie e.V. (German Electrical and Electronic  Manufacturers’ Association).  In some of the sources examined, the technical basis –  bus system or central control system – used to achieve  the potential savings is not explicitly stated. However, bus  systems such as KNX are featured repeatedly; in the majority  of cases they are the technology on which the savings are  based.  The wide spread of the values achieved in some areas can  be ascribed to a number of factors – applications consisting  of multiple functions, the field test character of the respective  tests, differing function definitions, etc. Nevertheless, the  research leaves the reader in no doubt – intelligent building  control can make significant contribution to energy efficiency  in buildings.

2CDC 500 060 M0201 5 Result of the study  The utilisable literature sources clearly indicate significant  potential for optimisation regarding reduction of the energy  consumption by the use of modern electrical installation  systems: The average value of all the sources results in a saving potential in  the range of: Room heating control:   approx. 14 - 25 % Heating automation:  approx. 7 - 17 % Shutter control:  approx. 9 - 32 % Lighting control:  approx. 25 - 58 % Ventilation control:  approx. 20 - 45 % In total, this results in an average energy saving by  general measures and optimisation of the control  engineering in the order of approx. 11 to 31 %.   The corresponding maximum values of the different areas  recorded in the literature in the study can be seen in the  following diagram. Reduced energy consumption through utilization of intelligent building control in houses and buildings Maximum values in the study “Energy saving potential using modern electrical installations” room heating contr ol Percentage of reduced energy consumption (%) heating automation shutter contr ol lighting contr ol ventilation contr ol

6  2CDC 500 060 M0201  The European Standard EN 15232 A key contribution to worldwide energy efficiency Around the world new legislation is promoting the use  of energy efficient technologies. The European Standard  EN 15232 (“Energy performance of buildings – Impact of  Building Automation, Controls and Building Management”)  was compiled in conjunction with the Europe-wide  implementation of the directive for energy efficiency in  buildings (Energy Performance of Buildings Directive  EPBD) 2002/91/EG. The standard describes methods  for evaluating the influence of building automation  and technical building management on the energy  consumption of buildings.  Four efficiency classes A to D have been introduced to this  purpose. After a building has been equipped with building  automation and control systems, it will be assigned one of  these classes. The potential savings for thermal and electrical  energy can be calculated for each class based on the building  type and building purpose. The values of the energy class C  are used as the reference for comparing the efficiency.

2CDC 500 060 M0201 7 The following diagram shows the differences in energy  consumption for three building types in the energy  efficiency classes A, B and D relative to the basis values  in rating C. For example, by using class A, 30 % of the  thermal energy can be saved in offices.  Function list and assignment to energy performance classes (section from table 1 of the EN 15232:2007 [D]) Heating / Cooling control Ventilation / Air conditioning control Lighting Sun protection A –  Individual room control with  communication between controllers –  Indoor temperature control  of distribution network water temperature – Total interlock between heating  and cooling control – Demand or presence dependent air  fl ow control at room level – Variable set point with load  dependant compensation of supply temperature control – Room or exhaust or supply air  humidity control – Automatic daylight control – Automatic occupancy detection  manual on / auto off – Automatic occupancy detection  manual on / dimmed – Automatic occupancy detection  auto on / auto off – Automatic occupancy detection  auto on / dimmed – Combined light/blind/ HVAC control B – Individual room control with  communication between controllers – Indoor temperature control  of distribution network water temperature – Partial interlock between heating  and cooling control (dependent on HVAC system) – Time dependent air fl ow control  at room level – Variable set point with outdoor  temperature compensation of supply temperature control – Room or exhaust or supply air  humidity control – Manual daylight control – Automatic occupancy detection  manual on / auto off – Automatic occupancy detection  manual on / dimmed – Automatic occupancy detection  auto on / auto off – Automatic occupancy detection  auto on / dimmed – Motorized operation with  automatic blind control C – Individual room automatic  control by thermostatic valves or electronic controller – Outside temperature  compensated control of distribution network water temperature – Partial interlock between heating  and cooling control (dependent on HVAC system) – Time dependent air fl ow control at  room level – Constant set point of supply  temperature control – Supply air humidity limitation – Manual daylight control – Manual on/off switch +  additional sweeping extinction signal – Manual on/off switch – Motorized operation with  manual blind control D –  No automatic control –  No control of distribution  network water temperature –  No interlock between heating  and cooling control – No air fl ow control at room level – No supply temperature control – No air humidity control – Manual daylight control – Manual on/off switch +  additional sweeping extinction signal – Manual on/off switch – Manual operation for blinds High energy performance building automation and control system (BACS)and technical building management (TBM)  Advanced BACS and TBM   Standard BACS Non energy efficient BACS    Efficiency  factor      for thermal energy  Office  School Hotel   0.70 0.80 0.68   0.80 0.88 0.85   1 1 1  1.51  1.20  1.31     Efficiency factor      for electrical energy  Office  School Hotel   0.87 0.86 0.90   0.93 0.93 0.95   1 1 1  1.10  1.07  1.07 Building Automation and Control (BAC) efficiency classes to EN 15232 A B C D

8  2CDC 500 060 M0201  Scientific study undertaken on the basis of the DIN V 18599 Data and facts relating to bus technology as well as room and building automation In 2008, the Biberach University of Applied Sciences,  commissioned by ABB, carried out a study on the issue  of “Energy saving and efficiency potential through the  use of bus technology as well as room and building  automation”.  The efficiency of ABB i-bus ®  KNX components was  scientifically studied on the basis of the DIN V 18599.  The usage profile “open-plan office” in a classic example  building served as the research project.  The DIN V 18599 was drawn up by the German DIN standards  committee for heating and ventilation as well as lighting.  The standard was introduced to implement the EC directive  2002/91/EC “Energy Performance of Buildings Directive”,  and in Germany it serves as the basis for issuing energy  certificates for buildings. From the 1st of July 2009, all non- residential buildings in Germany require an energy certificate,  if they are re-let, sold or leased. The building owners must  submit this document to any interested party on request.  In public buildings with more than 1,000 square meters  of floor space, the energy certificate must also be visibly  displayed. Determined by the Biberach University of Applied Sciences with  ABB i-bus ®  KNX components for usage profi le “open-plan offi ce”  (usage profi le 3 [DIN V 18599-10:2005-07]) in an example building  (classical offi ce building) with the 5S IBP:18599 program.  The potential savings relate to the energy consumption. The research results are included in the study “Energy saving and effi ciency  potential through the use of bus technology as well as room and building  auto mation”, which was undertaken in 2008 for ABB.  Potential savings for cooling using automatic blind control    Automatic blind control (automatic twilight control, timer program) Automatic blind control (dependent on external lighting) Automatic blind control (louvre adjustment dependent on position of the sun) Automatic blind control (louvre adjustment dependent on position of the sun  and occupancy controlled constant lighting control) 0   10   20 30 40 50 60 70 80 90  100 % Potential saving compared to manual operation

2CDC 500 060 M0201 9 Automatic light (occupancy controlled, not brightness controlled) Automatic light (occupancy controlled, dependent on brightness) Automatic light (occupancy controlled constant lighting control) Automatic light (occupancy controlled constant lighting control with auto- matic blind control [louvre adjustment dependent on position of the sun]) Determined by the Biberach University of Applied Sciences with  ABB i-bus ®  KNX components for usage profi le “open-plan offi ce”  (usage profi le 3 [DIN V 18599-10:2005-07]) in an example building  (classical offi ce building) with the 5S IBP:18599 program.  The potential savings relate to the energy consumption. The research results are included in the study “Energy saving and effi ciency  potential through the use of bus technology as well as room and building  automation”, which was undertaken in 2008 for ABB. Potential savings for automatic lighting control  The ABB i-bus ®  KNX system is based on KNX technology  which is the worldwide standard for intelligent building control  in houses and buildings (ISO/IEC 14543).  This system from ABB offers a comprehensive range of  products and solutions that enables verifiable, energy  optimised applications in new and existing buildings. This study demonstrates with its calculations and  investigations that a significant energy saving potential is  present through the usage of bus technology as well as  room and building automation. The level of potential savings  depends on the respective function or the combination of  functions. Overall conclusion: “This study demonstrates that  potential savings in energy consumption of up to 40 %  in office buildings through the combination of several  functions are possible.” A summary of the results of the study can be downloaded free-of-charge using  the following link: http://www.abb.com/knx 0   10   20 30 40 50 60 70 80 90  100 % Potential saving compared to manual operation

10  2CDC 500 060 M0201  ABB field studies Our own experience with constant lighting control   In almost all the technical literature, constant lighting  control is frequently accredited with a high level of  potential savings for electrical energy.  ABB examined the accuracy of these statements and the  specific potential saving values in its own series of tests.  The measurements were performed in an office building  with seminar rooms.  Using constant lighting control – in contrast to a lighting  that is fully switched on – the required lighting intensity  in the room is achieved by the continuous and controlled  addition of “artificial lighting” required to maintain a  defined level of brightness (in these measurements:  500 Lux). Only the amount of energy that is necessary  for the artificial lighting is therefore consumed.  Measurement 1, October 2008 Training room, ground floor, cloudy day, open blinds, test and  usage period from 8:00 a.m. to 3:30 p.m.: Additional lighting  of 2,707 lxh was required. If the lighting had been switched  on without control, it would have resulted in a consumption of  3,750 lux hours (lxh). Calculation of the additional lighting requirement:   Measured   Required Time  lighting intensity   additional lighting 08:00 – 08:30  25 lx  237 lxh 08:30 – 09:00  90 lx  205 lxh 09:00 – 09:30  120 lx  190 lxh 09:30 – 10:00  190 lx  155 lxh 10:00 – 10:30  210 lx  145 lxh 10:30 – 11:00  140 lx  180 lxh 11:00 – 11:30  150 lx  175 lxh 11:30 – 12:00  180 lx  160 lxh 12:00 – 12:30  220 lx  140 lxh 12:30 – 13:00  200 lx  150 lxh 13:00 – 13:30  180 lx  160 lxh 13:30 – 14:00  170 lx  165 lxh 14:00 – 14:30  120 lx  190 lxh 14:30 – 15:00  40 lx  230 lxh 15:00 – 15:30  50 lx  225 lxh Potential savings for this room:     approx. 28 % averaged over the usage period Measurement 2, October 2008 Conference room, first floor, very cloudy day, open blinds,  test and usage period from 8:00 a.m. to 5:00 p.m.: Additional  lighting of 2,820 lxh was required. If the lighting had been  switched on without control, it would have resulted in a  consumption of 4,500 lxh. Calculation of the additional lighting requirement:   Measured   Required Time  lighting intensity   additional lighting 08:00 – 08:30  12 lx  244 lxh 08:30 – 09:00  35 lx  232 lxh 09:00 – 09:30  50 lx  225 lxh 09:30 – 10:00  65 lx  218 lxh 10:00 – 10:30  90 lx  205 lxh 10:30 – 11:00  100 lx  200 lxh 11:00 – 11:30  140 lx  180 lxh 11:30 – 12:00  265 lx  118 lxh 12:00 – 12:30  350 lx  75 lxh 12:30 – 13:00  370 lx  65 lxh 13:00 – 13:30  370 lx  65 lxh 13:30 – 14:00  350 lx  75 lxh 14:00 – 14:30  315 lx  92 lxh 14:30 – 15:00  265 lx  118 lxh 15:00 – 15:30  235 lx  132 lxh 15:30 – 16:00  160 lx  170 lxh 16:00 – 16:30  100 lx  200 lxh 16:30 – 17:00   87 lx  206 lxh Potential savings for this room:     approx. 37 % averaged over the usage period

2CDC 500 060 M0201 11 Measurement 3, October 2008 Laboratory, second floor, sunny day, open blinds, test and  usage period from 8:00 a.m. to 5:00 p.m.: Additional lighting  of 1,517 lxh was required. If the lighting had been switched  on without control, it would have resulted in a consumption of  4,500 lxh.  Calculation of the additional lighting requirement:   Measured   Required Time  lighting intensity   additional lighting 08:00 – 08:30  7 lx  246 lxh 08:30 – 09:00  21 lx  240 lxh 09:00 – 09:30  44 lx  228 lxh 09:30 – 10:00  147 lx  176 lxh 10:00 – 10:30  217 lx  141 lxh 10:30 – 11:00  265 lx  117 lxh 11:00 – 11:30  352 lx  148 lxh 11:30 – 12:00  371 lx  129 lxh 12:00 – 12:30  429 lx  71 lxh 12:30 – 13:00  633 lx  0 lxh 13:00 – 13:30  458 lx  21 lxh 13:30 – 14:00  547 lx  0 lxh 14:00 – 14:30  1276 lx  0 lxh 14:30 – 15:00  1263 lx  0 lxh 15:00 – 15:30  1508 lx  0 lxh 15:30 – 16:00  1830 lx  0 lxh 16:00 – 16:30  1988 lx  0 lxh 16:30 – 17:00  2000 lx  0 lxh Potential savings for this room:     approx. 66 % averaged over the usage period Results:  1. A high-level of potential savings with regard to the  electrical energy are possible with constant lighting  control.   2. A generally valid statement concerning the level of  savings is difficult. The result depends on several  individual factors, e. g. daylight factors, alignment of  the room, surrounding buildings, etc.  In the ABB field studies the constant light control  always yielded savings of more than 25 % in  comparison to manual lighting operation. Measured values for the lighting intensity in the laboratory under examination [Lux]

12  2CDC 500 060 M0201  A clear result Proven energy efficiency in buildings with ABB i-bus ®  KNX   The overall result of the tests presented in this brochure  is unequivocal. There may be differences in the results  of the study regarding the concrete figures – but the  underlying trend is irrefutable:  –  Energy is saved with intelligent  building control in comparison to conventional technology. –  The level of potential savings depends   to a high degree on the building parameters and the usage profiles. –  The maximum energy saving potential  is achieved using a combination of different automation functions. –  The savings are fundamentally in the  double-figure % range. –  The required investment in intelligent  building control is generally low in comparison to structural modifications to buildings. –  The amortization periods are relatively  short and are generally within one to five years.

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14  2CDC 500 060 M0201  Optimisation example 1 Lighting control   Measures are to be undertaken in an office building to  reduce the energy consumption. In the first step, the lighting system is modernised.  The conventional ballasts of the fluorescent lamps are  replaced by  electronic ballasts . Accordingly, the electrical  power consumption of the fluorescent lamps is reduced by  about 30 %. In order to further optimise the energy consumption,  an additional  constant lighting control  is introduced.  The intention is to provide a constant lighting intensity of  500 Lux on the working surfaces. The brightness sensor  measures the current lighting intensity for this purpose. Using  the current value and the difference to the required lighting  intensity, the light controller calculates a brightness setting  for the dimming actuators. Between 28 % and 66 % of  electrical energy used for the lighting can be saved with this  control method – depending on the season, the weather and  the location of the building (see ABB field study on pages 10  and 11). Finally, it is possible to detect the occupancy of the room  using a presence detector and to implement an  occupancy  dependent lighting control system . If the room is not  occupied, the lighting can be switched off automatically  if someone has neglected to switch it off manually.  The automatic presence-dependent control can yield a further  13 % of savings.

2CDC 500 060 M0201 15 Optimisation variant 1a:  Lighting control using constant lighting control via a ballast with 1 – 10 V  technology and manual light operation. Optimisation variant 1b:  Lighting control using constant lighting control via a ballast with DALI  technology and manual light operation. Optimisation variant 1c:  Lighting control using constant lighting control via a ballast with 1 – 10 V  technology and manual light operation. All the required devices are installed in  a Room Controller that is mounted in the ceiling or under the floor. Optimisation variant 1d:   Presence-dependent lighting control using constant lighting control  via a ballast with 1 – 10 V technology.  With this variant, the light sensor is not required as the brightness  measurement and the lighting controller is integrated in the presence detector. The dimming values are sent via KNX to the Switch/Dim Actuators. In larger systems this can lead to high data transfer rates on the KNX line. Presence-dependent control is also possible for variants with DALI ballasts or with Room Controllers. Manual  light operation US/U Manual  light operation Manual  light operation US/U KNX KNX DALI KNX Light Controller  LR/S Light Controller LR/S DALI Gateway DG/S  Manual  light operation US/U KNX Switch/Dim  Actuator SD/S Presence  Detector PM/A Ballast  1 –10  V Ballast  1 –10  V Light Sensor  LF/U Light Sensor  LF/U Ballast  1 –10  V Ballast DALI Ballast  1 –10  V Light Sensor  LF/U Ballast  1 –10  V Ballast  1 –10  V Ballast DALI Room Controller RC/A  with Light Controller Module, Switch/Dim Actuator Module  and Binary Input Module

16  2CDC 500 060 M0201  Optimisation variant 2a: Blind control for optimised daylight usage Blind systems are used in functional buildings primarily for  shade and sun protection. They prevent the incidence of  direct sunlight into the working area. Through blind control it is possible to influence the incidence  of external light into the room. Therefore there is a direct  interdependence of lighting control and blind control. If it  becomes too dark in an office because a blind is closed, for  example, the lighting is switched on to compensate for the  lack of brightness. As a result, electrical energy is consumed  by the lighting at a time when there is actually enough daylight  available. A more efficient solution is the automatic control  of the angle of the louvres to take account of the position  of the sun. The louvres are opened just enough to ensure that sufficient  daylight enters the room and direct glare is prevented. Using  special light-guiding louvres the incidence of light is improved.  In conjunction with a constant lighting control, which ensures  that the minimum of lighting is used to maintain the required  brightness, a large share of the electrical energy can be  conserved. From the studies mentioned previously in this  brochure, an automatic blind control can be implemented in  conjunction with a presence dependant constant light control  providing potential savings up to 40 % compared to manual  operation of the lighting system. Blind control with Shutter Control Unit (JSB/S):  An optimum incidence of external light with minimum glare results from   the sun position-dependent control and the opening angle of the  louvers. Optimisation example 2 Blind control 1.90 m

2CDC 500 060 M0201 17 Optimisation variant 2b: Blind control for optimised climate control  Concerning the question of energy efficiency in buildings,  blind control also plays an important role with regard to  climate control. An intelligent blind control system has an  optimising effect on building climate control and supports  the user in a conservative and cost-optimised energy usage.  The best results are achieved by networking the blind control  with the systems for room climate control. Closing the blinds on the facades of the building on which  the sun is shining in summer, can prevent the rooms from  heating up – saving energy that would be needed to cool the  working areas. In winter the opposite is true. Here it is useful  to capture as much solar heat as possible in the rooms – this  saves energy when heating rooms.  In both cases it is necessary to balance the “climate control”  of the blinds with the presence of people in a room. As long  as someone is working in a room, the light-dependent blind  control should have priority, particularly with PC workstations,  but also in schools or conference rooms. All ABB i-bus ®  KNX  blind actuators feature a heating/cooling automatic as standard  for climate control of the blinds. For optimisation of the usage  of daylight, an additional Shutter Control Unit JSB/S can be  used. As is evident in the study from the Biberach University  of Applied Sciences (see page 8), a climate control involving  the blinds reduces the electrical energy required by the air  conditioning system by up to 30 %. Optimisation variant 2b Manual light and  blind operation US/U KNX Switch/Dim  Actuator SD/S Ballast  1 –10  V Presence  Detector PM/A Blind-   Actuator  JA/S Shutter  Control Unit  JSB/S Ballast  1 –10  V Blind  motor Blind  motor

18  2CDC 500 060 M0201  Optimisation example 3 Heating, ventilation, cooling     The technical systems for controlling room temperature  and air quality consume the largest share of energy in a  building. Accordingly, the largest savings can be made  here. Incorrect operation can lead to an expensive waste  of energy. Energy consumption can be greatly reduced by  optimisation of a building with regard to the architecture,  construction and installation engineering. On a room level, ABB i-bus ®  KNX intelligent building control  supports the user in optimisation of the energy consumption  and provides information to the installation engineering or the  building control engineering for optimisation of the setting  parameters. A presence detector used for control of the  room lighting can simultaneously switch the room thermostat  to absent mode as soon as the room is unoccupied for an  extended period. Heating or cooling energy can be conserved  in this way.  Practical experience has shown that the reduction of the room  temperature by 1 °C can reduce the consumption of heating  energy by 6 %. If the room temperature is reduced by 3 °C  during absence, 18 % of the heating energy can be saved  in a non-occupied room. As the temperature level typically  reacts slowly, this form of control is only useful for prolonged  absences. Linking the control to a seasonal blind control provides further  savings in energy, as described in the optimisation example  for blind control (see pages 16 and 17). Electrical control valves – such as Electromotor Valve Drives  (ST/K) with direct KNX connection or Electrothermal Valve  Drives (TSA/K), which are controlled noiselessly via Electronic  Switch Actuators (ES/S) – are used as control elements for  automatic adjustment of the room temperature to the required  temperature level. To avoid unnecessary energy consumption  during ventilation, the control valves are closed automatically  as long as a window is opened. The position of the valves can  be used for feedback purposes as an indication of heating or  cooling requirement in the building. The relevant systems can  set their output to suit the current requirements. –   Switch off lighting –   Automatic heating /  cooling for blind control –  Room temperature control  in absence mode I S   S O M E O N E   I N   T H E   R O O M ? –  Constant lighting control –  Automatic blind control  with louvre adjustment dependent on the position of sun –  Room temperature control  in occupancy mode N O Y E S

2CDC 500 060 M0201 19 If blower convectors or fan coils are used for room tempera- ture and air quality control, they can also be controlled via  KNX with the assistance of the Fan Coil Actuator (FCA/S). Many optimisation possibilities in new and renovated buildings  are provided by ABB i-bus ®  KNX through networking of all the  building engineering systems. The calculations on which the European Standard EN 15232  is based, spectacularly prove this fact with the demonstrated  potential savings of thermal energy (see page 7). Control and optimisation It is only really useful to implement optimisation measures  if you are aware of how much energy you are consuming.  The ABB i-bus ®  KNX Meter Interface Module (ZS/S) enables  the recorded meter values to be evaluated and visualised. The KNX technology is extended further by the use of  electronic energy meters. The building operator can simply  read the energy consumption values and quickly optimise  them. Busch ComfortPanel ®  16:9  Touch display Electronic energy meters in conjunction with the KNX Meter Interface Module  ZS/S deliver real time energy consumption values onto the KNX bus system

20  2CDC 500 060 M0201  References from ABB ABB i-bus ®  KNX setting concrete efficiency benchmarks Bezau Secondary School in Vorarlberg, Austria:   Reduction of the energy consumption from 160 to 25 kWh   Via ABB i-bus ®  KNX the lighting of the school is controlled  using presence detection, external brightness and timer  programs. The heating saves energy through individual room temperature  control utilising a central timer and visualisation system.  The blind control has been praised by teaching staff and  students alike, because it prevents unnecessary heating-up  of the rooms using automatic shading and provides a tangible  level of comfort.  All room states are visualised at a central point via KNX.  Through utilising ABB i-bus ®  KNX and modernising the  building shell, the energy consumption of the school  is now just over 25 kWh per square metre annually –  84 % less than before! School Centre in Neckargemünd, Baden, Germany: Only a third of the previous energy consumption levels  Following a fire in 2003, the school centre was rebuilt  to passive house standard.  The new building is about 14,000 square metres extending  over three floors. It incorporates 206 rooms, 42 of which are  class rooms, 51 are used as specialist rooms. The KNX installation consists of 14 lines with a total of  525 KNX components.  The individual applications are: –  Timer control of the lighting –  Presence detection in the toilets –  Blind control with automatic heating / cooling function  (  When a room is not in use, the blinds remain open in winter  and closed in summer) The use of construction measures and the introduction  of an intelligent building control has reduced the energy  consumption in the new building to about a third of the  “old” consumption figure.

2CDC 500 060 M0201 21 ABB Centre in Odense, Denmark: 13 % energy savings through KNX technology The building incorporates 123 rooms on three floors.  The KNX installation consists of 14 lines with a total of  645 ABB i-bus ®  KNX components.  In addition to automation of the heating and cooling systems  (presence-dependent, time controlled), particular emphasis  was placed on constant lighting control. Proven facts after one year of operation: In the open-plan offices, a saving of 13 % of the  electrical energy could be verified for the lighting after  a comparison of the previous and current consumption  measurements. In the measured area, this corresponds  to a saving of 29 kWh per day or (at a kWh price of  0.15 € ) 4.35 Euro per day! Museum “Arte Moderna” in Rovereto, Italy: About 28 % energy savings through KNX technology The museum is one of the most important exhibitors of  contemporary art in Italy. ABB i-bus ®  KNX technology is used  primarily for control of the lighting. The individual functions are  automatic lighting control, timer control and light scenes. In a comparison to 2006 and after installation of KNX in 2007,  an energy saving of about 28 % can be seen.  The power consumption values have been reduced by more  than 38,000 kWh per month.  The museum has saved almost 80,000 Euro in the first  year of usage of the KNX system. 

22  2CDC 500 060 M0201  Further information about the ABB i-bus ®  KNX can be found on the Internet at: http://www.abb.com/knx Pioneers of KNX technology ABB – a worldwide leader in power and automation technologies The ABB Group of companies operates in around 100 countries  and employs about 100,000 people. The business fields –  Power Products, Power Systems, Automation Products,  Process Automation and Robotics – enable customers to  improve performance while lowering environmental impact.  Almost 30 years of experience in intelligent building control  are the hallmark of our range in this area. We develop,  produce and distribute a wide range of products for building  installation.  The development and further improvement of ABB i-bus ®  KNX  technology demonstrates the resourcefulness and dedication  of our engineers in many areas. ABB plays a leading role  in the KNX Association, an organisation of more than  150 international manufacturers promoting the intelligent  building control standard KNX.  With the ABB i-bus ®  KNX, we provide leading-edge  technology, which continually sets benchmarks on a global  scale.

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ABB STOTZ-KONTAKT GmbH Eppelheimer Straße 82  69123 Heidelberg, Germany Phone:  +49 (0) 6221 701-607 Fax:  +49 (0) 6221 701-724 e-mail:  [email protected] www.abb.com/knx Contact Or der Number  2CDC 500 060 M0201 printed in Germany (10/09-5-ZVD) Note: We reserve the right to make technical changes or  modify the contents of this document without prior  notice. With regard to purchase orders, the agreed  particulars shall prevail.  ABB AG does not accept any responsibility  whatsoever for potential errors or possible lack of  information in this document.  We reserve all rights in this document and in the  subject matter and illustrations contained  therein. Any reproduction, disclosure to third parties  or utilization of its contents - in whole  or in parts - is forbidden without prior written  consent of ABB AG.  Copyright© 2009 ABB  All rights reserved