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Sensors
for energy efficient
buildings
Copyright Thermokon 2008 2
PortraitFounded in 1988 by Harald Zygan
Thermokon Sensortechnik GmbHMittenaar / Germany (headquarters)
Thermokon Elektronik Components GmbHStockerau near Vienna / Austria
Thermokon-Danelko Elektronik ABÄngelholm / Sweden
Thermokon Polska Spolka z o.o.Jelenia Gora / Poland
Distributors within Europe, the United States
and Russia
2008 figures:
approx 100 employees at all 4 locations
Turnover > 15 Mio EUR
Export ~ 45 %
0,00 €
2.000.000,00 €
4.000.000,00 €
6.000.000,00 €
8.000.000,00 €
10.000.000,00 €
12.000.000,00 €
14.000.000,00 €
16.000.000,00 €
18.000.000,00 €
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010
Total Germany
Total Export
3
Thermokon – Turnover
Export 24,6% Export 41,8%
Export 42,6%
Export 48%
4
Thermokon – Product Mix
I/O-Modul 2%
Air Quality & CO2
4%
Room Operating
17%
Humidity 11%
EasySens 13%
Cable sensor 19%
Duct-/Immersion
11%
Multisensor 2%
Pipe contact
6%Outdoor 4%
BuschJaeger 1%
pressure 4%
Screw-In 4%
Lux-Level/
motion 2%
5
Thermokon – Growth
0,00 €
500.000,00 €
1.000.000,00 €
1.500.000,00 €
2.000.000,00 €
2.500.000,00 €
3.000.000,00 €
2003 2004 2005 2006 2007 2008
Duct/Immersion
Room OperatingPanels
WRF 08
EasySens
Humidity
Cable sensors
Air Quality & CO2
Copyright Thermokon 2008 6
Focus on Strengths
· Specialised in sensor components for the building control technology
· Sensors (temperature, rel. humidity, brightness, motion, air quality, CO2, pressure)
· Room operating panels in individual design and customized panels
· EasySens (battery- and wireless system)
03.08.2010 © Thermokon 2008
Products
03.08.2010 © Thermokon 2008
Products
03.08.2010 © Thermokon 2008
LON, Modbus, Bacnet
03.08.2010 © Thermokon 2008
Design & Technic
Designed for most standard
50x50mm frames, i.e.
– Merten M-Arc, M-Plan, M-Smart
– Gira E2, Event, Esprit, ST55
Thermokon ECOS
03.08.2010 © Thermokon 2008 Page 11
Habitat: Office buildings
03.08.2010 © Thermokon 2008 Page 12 of 15
Offices, commercial buildings
03.08.2010 © Thermokon 2008 Page 13 of 15
Monuments, refurbishment
03.08.2010 © Thermokon 2008 Page 14 of 15
Typical Office Space
03.08.2010 © Thermokon 2008 Page 15 of 15
MainsLAN
03.08.2010 © Thermokon 2008 Page 16 of 15
LON
Energy harvesting: motion
03.08.2010 © Thermokon 2008 Page 17 of 15
Moving (rotating)
magnet induces
current in
surrounding coils.
Energy ~ n * rpmn = number of windings
rpm = speed of magnet
(size & magnet = const)
Energy harvesting: motion
03.08.2010 © Thermokon 2008 Page 18 of 15
Switches
03.08.2010 © Thermokon 2008 Page 19 of 15
Energy harvesting: ambient light
03.08.2010 © Thermokon 2008 Page 20 of 15
• Ambient light > 50 lux powers sensor
• 3h charging at 200 lux provides enough energy for 14h in total darkness
• Fully charged devices survive more than 3 days in total darkness
What is lux ?
03.08.2010 © Thermokon 2008 Page 21 of 15
cd*sr
m2
lm
m21lx = 1 = 1 All clear ??
1m
~1 lx
Typical Illumination Intensities
03.08.2010 © Thermokon 2008 Page 22 of 15
School• Blackboard 500 - 1000 lx
• General class room 300 - 500 lx
Office Building• PC workplace 200 - 500 lx
• Conference room 300 - 700 lx
• Corridor 50 - 100 lx
Hotel• Reception 300 - 700 lx
• Restaurant 150 - 300 lx
• Staircase 50 - 150 lx
Efficiency = fast & no overhead
03.08.2010 © Thermokon 2008 Page 23 of 15
• No overhead, 14 byte only
• High speed transmission (« 1ms)
• Randomly timed multiple transmissions
t
t
Sensor 1
Sensor 2
Sensor 1
Sensor 2
Cyclic and/or adhoc transmision
03.08.2010 © Thermokon 2008 Page 24 of 15
information transmission
Temperature cyclic
Setpoint cyclic
Occupancy button adhoc
Fan stage setting cyclic
Cyclic:
if value has changed since last
transmission, cycle time is 100s.
If unchanged, cycle time is ~ 16 min.
Physics – signal damping
03.08.2010 © Thermokon 2008 Page 25 of 15
• Signal damping when
propagating though
walls
• Damping depends on
material and water
content
• Furnitures damp as
well !
Radio range in building:
20-30m typ.
Effective path lenght - multipath
03.08.2010 © Thermokon 2008 Page 26 of 15
03.08.2010 © Thermokon 2008 Page 27 of 15
LON
wireless, no batteries
03.08.2010 © Thermokon 2008 Page 28 of 15
0..10V, relay out
sensors / transmitters gateways / receivers
Ethernet, RS485
DDC
USB
Why not use a battery ?
03.08.2010 © Thermokon 2008 Page 29 of 15
55 floors
more than 100 tenants
13000 lights and blinds
4200 switches
„Battery based radio systems are
cheaper“
„Battery life is up to 7 years according
to datasheet !“
Question:
Which switch will determine the
replacement interval ?
Room-Controller
0–10V and relay outputs
Communicating BMS
Transceivers (Bidirectional commnunicating radio)
Thermostat controller / hotel application
Window contact
Illumination, dimming / blinds & shutters
Fireplace / kitchen exhaust
Reference: Forum Hohenwart
03.08.2010 © Thermokon 2008 Page 39 of 15
3
identical
hotel
buildings
Initial situation
• 27 guest rooms in each building (2 stories)
• No individual temperature control in the guest rooms
• Floor heating
• No automation: manual manifolds
• Hot rooms in winter
• Temperature controlled by clocked boiler modulating the flow temperature
• High average annual consumption:
150 kWh/m²
Concept for first building
• LON network
• Each room to be equiped with:
– LON Room thermostat
• Outdoor temperature sensor to
control flow temperature
• Integrate existing central heating
boiler
• Add electrothermal valves to floor
heating manifold
EasySens Window contacts
• Connect room automation to
booking management system
• Thermal metering
Energy consumption
[kWh]
2006
Se
pte
mb
er
Octo
be
r
No
vem
be
r
De
ce
mb
er
Average building #1 &2
(no automation)8398 7947 13650 18474
Building #3
(with automation)2892 4919 7924 8977
Savings [kWh] 5506 3028 5726 9497
Savings [%] 65,5% 38,1% 41,9% 51,4%
Results after step 1
Prof. Achim Heidemann, University Albstadt-Sigmaringen
Energy
consumption
[kWh] 2007
Jan
ua
ry
Fe
bru
ary
Ma
rch
Ap
ril
Ma
y
Jun
e
July
Building #1
(no automation) 15423 11293 15696 11056 10325 3737 4753
Average Building
#2&3
(with
automation)
7341 4864 6990 1585 645 497 599
Savings [kWh]8082 6429 8706 9471 9680 3240 4154
Savings [%] 52,4% 56,9% 55,5% 85,7 % 93,7 % 86,7 % 87,4 %
Results after step 2
Prof. Achim Heidemann, University Albstadt-Sigmaringen
Cost (2006)
• Energy savings > 60% (!) compared to initial state.
• Cost of room automation per guest house:
40.000 EUR
• Estimated annual savings per guest house:
85.000 kWh ~ 8500 l oil
~ 8500 m3 gas
~ 5.500 EUR
• Significantly improved guest comfort
• Integration of booking system and Web based visualisation: 45.000 EUR
Cost / BoM
• 13 room thermostates with
setpoint adjuster SR04P
• 26 window contacts SRW-01
• 2 heating controller for 8 zones
SRC-DO8
• 3 bidirectional LON-Gateways
STC65-FTT
Annual energy savings
1656,59
2028,00
592,00
888,00
5164,59
ca. 5500,00
03.08.2010 © Thermokon 2008 Page 45 of 77
List price [€]Article
Aarstrasse 6
35756 Mittenaar, Germany
Tel.: +49 2772/6501-0
Fax: +49 2772/6501-400
EMail: [email protected]
Internet: http://www.thermokon.de
Thank you very much
for your attention !