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Gareth Rowlands ABB LTD

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Gareth Rowlands ABB LTD. Output. Input. 100 %. 20 %. Potential is not used sufficiently !. The Challenge: Searching for the lost Energy. … in Buildings. What\'s going to drive the future?. Legislation - Building Regulations (Low Energy Buildings Class) - Climate Change Levy

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Presentation Transcript
slide2

Output

Input

100 %

20 %

Potential is not used sufficiently !

slide3

The Challenge:

Searching for the lost Energy

… in Buildings

slide4

What\'s going to drive the future?

  • Legislation

- Building Regulations (Low Energy Buildings Class)

- Climate Change Levy

- Availability of government sponsored grants (Tax relief)

  • Economic Pressure

- The simple costs of running a building

  • The Environment

- Social consciousness "Naming & Shaming"

- Carbon footprint

slide5

Comfort ….

  • Security …
  • Economy ??
  • How ? How much ?
slide6

Case Study: Lighting - the conventional Approach

Energy Calculation

All figures are real figures used for the investment calculation of a new office complex in the United Kingdom.

slide8

Assembly Hall + Office: Investment in KNX for

Lighting Control with Presence Detection

  • Connected Load: 91,5 KW
  • Price per KWH: 0,093 €
  • Reduction: 45 %
  • Investment: 106 T€
  • Saving per year: 8738 €
  • Return of Investment:
  • 10 years
slide11

Efficiency Potential: Lighting

Source: Energieeffizienz automatisien, LonMark Deutschland e.V. Comparison to reference buildings according to DIN V 18599 or prEN 15232

slide12

Efficiency Potential: Heating and Cooling

Source: Energieeffizienz automatisien, LonMark Deutschland e.V. Comparison to reference buildings according to DIN V 18599 or prEN 15232

slide13

Customers ask ABB:

How can KNX help ? Potential for Savings ?

  • Current Situation: There are some information, sometimes with figures, rarely with fundamental background (… save up to 82 % … ?! …)
  • Real measurement (e.g. with comparision of buildings) is hardly available (University Bremen)
slide14

Conclusion: Common project KNX and Energy efficiency with the university Biberach

ABB Stotz-Kontakt Busch-Jaeger Hochschule Biberach

  • The university Biberach offers study courses in the field of building technology and is already working on the topic energy efficiency in buildings
slide15

Project description:

Investigation ofaKNX-System with typical functions (Lighting, Shutter and blinds, HVAC) with defined conditions (Type of building, different user profiles) regarding possible savings

Consideration and calculation of the possible savings based upon DIN V 18599 and prEN 15232 in combination with existing softwaretools

Integration of products from ABB, including measurement of standby losses

slide16

Project progress:

    • Start: November 2007
    • Finalized by the University Biberach until November 2008
    • Followed by a preparation of the data for publication (Summary and Presentation)
slide17

Objection: Own consumption of the additional devices undo the possible savings

    • Investigation of the university Biberach
    • Typical own consumption of a KNX component: app. 200 mW
slide18

Room Temperature Control: conventional …

Thermostat Stage 5 - does not work for sure !

Problem:

Discipline of

the user

slide19

Room Temperature Control: conventional …

Thermostat Stage 3 - may be it works ?

Problem:

Accuracy

slide24

A typical example: Heating - conventional

not occupied

Evening classes

not occupied

Morning lessons

Afternoon lesson

School Classroom

Comfort 21ºC

Comfort 20ºC

mean room temperature ~ 19.5 ºC

Night 16ºC

04:00 08:00 12:00 16:00 20:00

slide25

A typical example: Heating - according to demand

not occupied

not occupied

Evening classes

Morning lessons

Afternoon lesson

School Classroom

Comfort 21ºC

Standby 18ºC

mean room temperature ~ 17.5ºC

Night 16ºC

04:00 08:00 12:00 16:00 20:00

They say: A temperature reduction of 1ºC can mean energy savings of 6%.

slide26

Lighting Control: conventional …

Illumination turned on, sun from outside, nobody in the room

slide27

Lighting Control:

intelligent …

Presence depending

Constant Light

Control

slide28

Blind control: conventional …

Sun is shining, Blinds completely closed, Light on

slide29

Blind Control: intelligent …

Sun is shining, Noon, Lamellas horizontal

slide30

Blind Control: intelligent …

Sun shines , Afternoon, Lamellas slightly closed

slide31

Blind Control: intelligent …

Sun shines, evening, Lamella almost completely closed

slide32

Conjunction of a few Functions:

  • Winter: Sun shines, no Person present,  Light on, Blinds up, Heating Standby Mode
  • Winter: Sun shines, Person present,  Licht on, Blinds in Position, Heating Comfort Mode
  • Winter: Sun does not shine, Person present,  Light controlled, Blinds up, Heating Comfort Mode
  • Winter (Weekend): Sun does not shine, no Person present  Light off, Blinds down, Heating in Frost Protection Mode
slide33

Conjunction of a few Functions:

  • Summer: Sun shines, no Person present,  Light on, Blind down, AC Standby Mode
  • Summer: Sun shines, Person present,  Light on, Blinds in Position, AC Comfort Mode
  • Summer: Sun does not shine, Person present,  Light controlled, Blinds up, AC Comfort Mode
  • Summer (Weekend): Sun does not shine, no Person present  Light off, Blinds down, AC off
slide34

Conclusion:

An intelligent and energy saving solution e.g. in an office building should be as follows:

  • Presence Detection
  • Constant Light Control
  • Room Temperature Control
  • Shutter control depending on sun position

All in one system

 One consistent solution

slide36

Save Energy and Costs

    • Inspection of consumers behaviour
    • Consumption becomes transparent
    • Fair splitting of costs
    • Internal billing
    • Detection of “Energy Thieves”
    • Creation of incentives for cost saving
    • Change of consumers behaviour
    • Approach for automation
    • Load management
    • Monitoring of the installation

"If you cannot measure it, you cannot improve it."

Lord Kelvin

1824 -1907

+

Why measuring electrical Energy ?

$

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