twin ® – the lift technology revolution - amiando
TRANSCRIPT
ThyssenKrupp Elevator
Strategies for keeping people moving that won't cost the Earth
Mr. Dickon Purvis, Vice President Strategic Marketing & Business
Development
Mr. John Louie, Vice President Sales & Marketing
Hong Kong, October, 25th, 2012
Today’s topics
1. How to tailor the handling capacity of your elevator system for
peaks and troughs in demand, thereby minimizing energy
consumption and core space?
2. Machine and control solutions that reduce energy consumption of
your elevator system.
3. What do the energy efficiency ratings of Elevator & Escalator
systems actually mean?
4. Escalators running constantly on full power during times of light
passenger traffic waste unnecessary energy.
TWiN video
3
How to tailor the
handling capacity of
your elevator system
for peaks and
troughs in demand,
thereby minimizing
energy consumption
and core space?
4
➔ Two Cars ➔ One Shaft ➔ Moving Independently
TWIN ® – the lift technology revolution
5
6
1. Entrance Level
2. Entrance Level
Upper Zone
Lower Zone
Upper Zone
Lower Zone
Two cars moving in one shaft
independently
Cars using the same guide
rails and the same landing
doors
Minimum clearance between
both cars guaranteed by a
special four layer safety
concept
TWIN – the lift technology revolution
TWIN – the lift technology revolution
Fewer elevators shafts = Less
space for building core.
Reduction of lift shafts up to
50% possible!
More saleable / rentable area
Reduced building cost
Lower energy costs
2 Entrance Levels
➔ Initial design proposal in March 2008
➔ 171m, 40 story office building
➔ Initial lift requirement was 15 shafts including a double-deck solution split into low-rise and high-rise zones.
➔ Total 10 double-deck shafts (5 low & 5 high)
➔ Due for completion 2014
➔ Consultant: EGIS Battiments
➔ Architect: Attelier d´architecture Anthony Bechu/ Tom Sheehan
TWIN Case Study
Tour D2 (Paris, France)
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Original core layout
➔ Building core was originally designed for 15 passenger elevator shafts
Proposed an alternative solution using TWIN instead of double-deck
TWIN Case Study
Tour D2 (Paris, France)
Final core layout
➔ TWIN ended up saving 5 elevator shafts in total !
TWIN Case Study
Tour D2 (Paris, France)
Additional benefits
The transformer for TWIN could be made
smaller
Reduced cable sizes due to the smaller
currents involved
The need for a smaller emergency generator
to cope with much lower loads (app. 60%),
because the TWIN cabs can be moved
individually per shaft in case of evacuation.
Replacements parts are more cost effective
as TWIN uses ‘normal’ sized machines and
standard parts
TWIN allows smaller masses to be moved,
especially when traffic demand is low
resulting in substantial energy savings
Case Study
Tour D2, Paris, France
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TWIN Case Study
Tour D2 (Paris, France)
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4.0m/s, 5 shafts, 10 cabs
5.0m/s, 5 shafts, 10 cabs
2.5 & 4.0m/s, 5 shafts, 8 cabs
4.0 & 5.0m/s, 5 shafts, 7 cabs
0
20,000
40,000
60,000
80,000
100,000
120,000
Low-rise High-rise
kW
h
The elevators ran 9 hours a day, 250 day per year with 6hours of interfloor traffic per day. The “standby energy” consumption was based on 15 hours a day (365 days) and
115 days full day “standby” (no run). These 115 days are considered for weekends and holiday, when the office building will not be used.
Double-Deck Elevator compared with TWIN
➔ 62m, 17 storey office building
➔ Original design concept using conventional lifts would have required 13 lift shafts
➔ Completed in 2011
➔ Consultant: Grontmij / Adam J. Scott
➔ Architect: Fosters + Partner
TWIN Case Study
St. Botolph’s (London, UK)
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TWIN Case Study
St. Botolph’s (London, UK)
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Proposed alternative solution
8 pairs of TWIN lifts
Increase in lettable space as the core
size required could be reduced by 5
lift shafts. Approx. USD 500k per
annum
Additional benefit
TWIN allows one of the cabs in each pair
to be parked when traffic demand is low
resulting in extra energy savings
TWIN References Asia Pacific
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Raine Square (Perth,
Australia)
Bayshore Hotel (Dalian,
China)
Olympic Park Observation
Tower (Beijing, China)
Cheil Worldwide HQ (Seoul,
South Korea)
Entertainment & Media
Center (Seoul, South Korea)
Ajou University Hospital
(Suwon, South Korea)
Machine and control
solutions that reduce
energy consumption
of your elevator
system.
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The two main areas targeted for energy efficiency are
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Machine & drive controls
Elevator control system
Traction elevator operating principle
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Empty Car weight = 1,500
kg
Load capacity = 1,000 kg
Compensation chain or ropes
Counterweight = empty car
weight +1/2 load = 2,000 kg
Hoisting ropes
Traction
sheave
Technological developments in elevator hoist machines
& drive controls
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Hydraulic to traction
Geared to gearless
DC motors to AC motors
Asynchronous to permanent
magnet synchronous motors
Impact of development of Motor Drive Control Systems
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DC or AC asynchronous versus
permanent magnet
synchronous which can
improve efficiency between 30
– 50%.
Intelligent Elevator Control Systems
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Switching off components
when idle
Frequency inverter with
regenerative drive feed back
power to the building
Dynamic adaption of parking
level and door times
Grouping the same or similar
destinations
Reducing the travel time
Reducing the number of landing
stops per round trip
Save up to 30% of shaft space
22
Intelligent elevator control systems
Destination selection control
What do the energy
efficiency ratings of
Elevator & Escalator
systems actually
mean?
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VDI – Verein deutscher Ingenieure
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VDI 4707 is the basis for an
energy efficiency rating of
elevators accepted
internationally
7 designated energy efficiency
classes
3 separate energy demand
ratings
Escalators running
constantly on full
power during times
of light passenger
traffic waste
unnecessary energy.
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How to improve the power efficiency of the motor
during times of light load?
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GREEN BOX
A microprocessor and circuitry
that senses the energy
requirements of a motor.
At constant speed, it provides
the right amount of power to
meet the demands of any traffic
volume.
VVVF Creeping speed feature
Reduces the running speed to
creeping mode when no
passengers are on board
Benefit of the improvements
27
By improving the power
efficiency of the drive motor it
is possible to obtain a
significant reduction in power
consumption, potentially 25 –
40%.
Summary
1. How to tailor the handling capacity of your elevator system for
peaks and troughs in demand, thereby minimizing energy
consumption and core space?
2. Machine and control solutions that reduce energy consumption of
your elevator system.
3. What do the energy efficiency ratings of Elevator & Escalator
systems actually mean?
4. Escalators running constantly on full power during times of light
passenger traffic waste unnecessary energy.
ThyssenKrupp Elevator
Thank you.