Using real measurements to examine large numbers of ...€¦ · 14/07/2015 · Using real...
Transcript of Using real measurements to examine large numbers of ...€¦ · 14/07/2015 · Using real...
Using real measurements to examine large numbers of building envelopes Jacob Schmiedt Institute of Solar Research, German Aerospace Centre
1st Oct. 2015
> Real measurements on building envelopes > Jacob Schmiedt > 1st Oct. 2015 DLR.de • Chart 1
What do we want?
> Real measurements on building envelopes > Jacob Schmiedt > 1st Oct. 2015 DLR.de • Chart 2
• Gather energy use data
• Process and evaluate large amounts of data
• Understand the observed energy use
• Draw conclusions and develop recommendations for action
Proposed IEA EBC Annex: "Building Energy Epidemiology: Analysis of Real Building Energy Use at Scale“ (3rd July 2015)
• Technical facilities
- Heating
- Hot water
• Properties of the building envelope
- U-values of components
- Defects
• Inhabitants’ behaviour
- Demand for comfort
- Interaction with technology
• Weather/Climate
Various factors determine the energy use of buildings
> Real measurements on building envelopes > Jacob Schmiedt > 1st Oct. 2015 DLR.de • Chart 3
Current status:
• Fast, cheap but no
quantitative information (e.g.
thermography)
or
• Fast, cheap, quantitative but
no real measurements (use of
typologies)
or
• Accuarte measurements but
long times, expensive
Our Goal: Real, accurate measurements in short time
> Real measurements on building envelopes > Jacob Schmiedt > 1st Oct. 2015 DLR.de • Chart 4
+
+ • Combine technologies from
- Energy research
- Security
- Remote sensing
• Consider several scales
• Fast measurements large numbers
• Measurements as input for
modeling and simulations
Remote sensing
> Real measurements on building envelopes > Jacob Schmiedt > 1st Oct. 2015 DLR.de • Chart 5
• High resolution 3D-models from
overflight (VIS and IR)
• Thermal deformation of buildings
can be measured with radar
interferometry
Amplitude of periodic deformation of the central train station in Berlin in east-west direction (above) and in height (below)
Combining conventional and new techniques
> Real measurements on building envelopes > Jacob Schmiedt > 1st Oct. 2015 DLR.de • Chart 6
Conventional thermal image of a lawn (left) and thermal image after optimized evaluation (right)
• Optimization of common technniques, e.g.
- Infrared
- Tracer gases
- Automated visual
inspection
• Additional techniques, e.g.
- Ultrasound
- Mikrowave sensing
• Use techniques to prepare refurbishments and for quality control
• Customers:
- Owners
- Architects, civil engineers
- Communities
• Individual data and evaluation for customers
• Anonymized data for research data base
• Combination with other data in „urban data structure“, e.g. energy use,
sociological, demographics, climate (to be developed in joint project of
Helmholtz centers)
Market and research
> Real measurements on building envelopes > Jacob Schmiedt > 1st Oct. 2015 DLR.de • Chart 7
• Need for fast, accuarte measurements of properties of building envelopes
• Use modern sensor techniques from various fields
• Create a product for planning and controlling refurbishments
• Combine generated data with other data to understand energy use on large
scales
Summary
> Real measurements on building envelopes > Jacob Schmiedt > 1st Oct. 2015 DLR.de • Chart 8
Thank you for your attention