efficientstreetlighti ng

efficientstreetlighti ng
Hess Form + Light Ltd.
Suite7, Courtyard Offices,
BraxtedPark, Great Braxted,
GB - Witham Essex CM8 3GA
For further information, visit:
W W W. E F F I C I E N T- S T R E E T- L I G H T I N G . C O M
Tel: +44 (0) 1621 890 265
Fax: +44 (0) 1621 892 617
e-mail: [email protected]
www.hess.co.uk
All rights reserved.
Hess AG Form + Licht
September 2008
SP.08/08.0,5.Mz
A golden opportunity for cities and towns:
Save energy and cut overhead through investment that quickly pays for itself.
EFFICIENT STREET LIGHTING
ACT I NG TO DAY SAVE S MON EY
Potential Opportunities and Benefits for Towns and Cities
R E D U C T I O N O F E N V I R O N M E N TA L B U R D E N
There is no city or town that doesn’t feel the budget crunch of increasing energy prices. In particular, the illumination of public spaces cuts deeply into
budgets. More efficient alternatives have been available for a good while. However, there has been no better time than today to upgrade. Hess AG
currently offers luminaires with which energy use can be cut by more than fifty percent, which represents a drastic reduction in fixed public spending
expenses.
Four alternatives are available to improve efficiency:
1. A completely new lighting design plan with greater spacing distances between the lighting units
2. Replacement of the poles and luminaires
3. Replacement of just the luminaires
4. Retrofitting of existing luminaires with new components
via drastically decreased energy consumption, lower carbon dioxide emissions,
minimum light pollution.
Investment in new lighting is well worth the money, as it will pay for itself within a very short time.
SIG N I F IC ANT SAVI NGS
on annual energy costs.
IMPROVED QUALITY OF LIGHTING
for the welfare and safety of the citizens.
C R E AT I O N O F U N I Q U E C I T Y O R
TOW N I DE NTITY
attractive lighting design creates an unmistakable character.
over
IMAGE ENHANCEMENT
due to the city or town’s commitment to long-term energy projects.
RESIDENZA
SERA
TA R O
One model with unsurpassed
optional multiplicity.
A bestseller by Hess.
Frequently, just luminaire replacement
provides substantial savings.
Low wattage, high output.
A LT B E R L I N
Reflector retrofit kit for period luminaires.
50%
savings
OPPORTU N ITI E S AN D BENEFITS
2 . 3
TH E FACTS
INEFFICIENT
Streetlights from the Sixties
- Too close together.
- Too high wattage.
- Lack of light control.
- Absence of shielding.
· Energy prices are rising, with ever increasing rapidity.
· 30-50 % of municipal energy spending is for street lighting.
· Upgrading is easy and worthwhile:
· There is no other area where municipalities can save so much money so quickly.
· The cost of upgrading pays for itself within a few years.
· Maintenance-friendly design also cuts expenses.
· The time where mandatory action is required is approaching:
· Legislation is about to be passed and subsidies will soon be available.
simple and worthwhile,
LIGHT SOURCE EFFICIENCY
Hypothetical limit
LED
the cost of upgrading pays for itself
High-pressure sodium vapour
Metal halide
Fluorescent
a few years
within
High-pressure mercury vapour
Low-voltage tungsten halogen
Incandescent
lm/W 0
20
40
60
80
100
120
140
160
180
200
220
240
TH E FACTS
4 . 5
RESIDENZA
Stuttgart’s downtown is a prime example of how advantageous retrofitting with modern
luminaires can be. The City replaced numerous lighting fixtures with Hess’s RESIDENZA
M luminaire. Besides its precise light control, the new luminaire enabled the City to use
lower watt sources, while cutting carbon dioxide emissions and energy consumption.
In addition, the existing poles could be used and several of the lighting units could be
eliminated altogether.
ADDE D B E N E F I TS
· Higher mounting heights
· More uniform illumination
· Elimination of light pollution
ENZA
D
I
S
RE
mps
C
EFFI
I
XA
E
Y
ENC
MPLE
on:
situati
s
u
o
i
Prev
tures
ing fix
t
h
g
i
l
ed
x 89 W
e-shap
load 2
Sp h e r
d
e
t
c
Conne
nits
250 u
2 H IT 3
5 W la
250 un
its
s*:
Saving
ear
kWh/y
92,400
2
/year
k g CO
0
r
4
0
,
55
ds/yea
pou
11,088
n
2 output is year
d CO
per
te
la
u
ration
alc
of ope
, the c
rs
ix
u
m
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y
h
0
energ
nd 420
urrent
kWh a
any’s c
£ .12/
rm
n
e
o
G
d
n
do
base
*Base
avings
kWh. S
59 6 g /
6 . 7
NOVARA
The Town of Flims in Switzerland refurbished the lighting on the main street through
town. Already once in the past, the existing luminaires had been relamped with new
light sources, but the town was not satisfied with the results. This time they installed
the NOVARA S fixtures, which can be dimmed for additional savings – a benefit that
pleases the town treasurer.
ADDE D B E N E F ITS
· Uniform illumination
· White light
RA S
NOVA
amp
90 W l
MPLE
CI
I
F
F
E
X A vious situation:
E
Y
Pre
amp
ENC
10 W l
Co
HS E 1
25 W*
load 1
d
e
t
c
e
nn
10
0 units
-E Plug
* (NAV
-In)
H IT Co
s
1 13 u n
its
s*:
Saving
ear
kWh/y
1 5 , 12 0
2 /year
g CO
k
2
1
0
9,
s/year
oun
1,814 p
d
2 output is year
d CO
per
te
la
u
ration
alc
of ope
, the c
rs
ix
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m
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y
h
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nd 420
urrent
kWh a
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£ .12/
rm
n
e
o
G
d
n
do
base
*Base
avings
kWh. S
59 6 g /
8 . 9
SERA
The City of Löbau replaced 15 old luminaires from the former German Democratic
Republic. The old lighting fixtures had no covers and were fitted with poor reflectors,
which made high wattage lamps with high connected loads necessary.
The new streetlights cut electricity costs by more than 33 percent and significantly
improved the lighting. Moreover, only a few years are required before the investment
will have paid for itself.
ADDE D B E N E F ITS
· DIN EN 13201 code compliant street lighting
· Reduction of maintenance costs
S E R Alamp
MPLE
CI
I
F
F
E
X A evious situation:
E
Y
Pr
ties*
ENC
Seven
he
from t
s
t
266 W
h
g
i
l
d load
treet
e
t
s
c
R
e
n
D
G
Con
nits
15 u
* 2x H
M E 17
5W
H I T 70
W
15 uni
ts
s*:
Saving
ear
kWh/y
11,40 3
2 /year
g CO
k
6
9
7
6,
s/year
d
59 6
2 output is r
ea
d CO
y
te
r
e
la
p
u
calc
tion
ix, the
f opera
ergy m 200 hours o
ent en
4
rr
d
u
n
c
ha
y’s
erman
.12/kW
d on G based on £
*Base
s
g
in
. Sav
g/kWh
poun
1,36 8
10 . 11
SERA G
St. Louis, France upgraded the lighting in its industrial area and on the main
thoroughfare, replacing different models with a single model. In the past, the
luminaires had been relamped with HST light sources, but the modern Hess
reflectors proved more effective, providing the same lighting while cutting the
wattage down to 150 W.
ADDE D B E N E F ITS
· Tool-less maintenance
· Reduced replacement part inventory (due to decreased model diversity)
G
S E R A0 W lamp
MPLE
CI
I
F
F
E
X A vious situation:
E
Y
Pre
res*
ENC
g fixtu
tin
ay ligh
w
d
275 W
a
o
r
cal
d load
e
t
c
e
n
Techni
Con
nits
69 u
* HS E
250 W
1 HST
15
69 uni
ts
s*:
Saving
ear
kWh/y
30,429
2 /year
k g CO
5
3
1
,
18
s/year
nd
59 6
2 output is r
ea
d CO
y
te
r
e
la
p
u
calc
tion
ix, the
f opera
ergy m 200 hours o
ent en
4
rr
d
u
n
c
ha
y’s
erman
.12/kW
d on G based on £
*Base
s
g
in
. Sav
g/kWh
pou
3,651
12 . 13
MILLENNIO
In 2003, Hess introduced the world’s first LED streetlight, MILLENNIO, on the
market. Early on, Hess realized the enormous potential offered by LEDs. With
its many years of experience, Hess maintains a position at the forefront of
LED innovation. The MILLENNIO luminaires were installed along a link road in
Lillehammer.
ADDE D B E N E F ITS
· LED luminaires are virtually maintenance-free
· Over 80,000 hours of service life are possible
· Minimal insect attraction
E
MILL
MPLE
CI
I
F
F
E
X A vious situation:
E
Y
Pre
es*
minair
ENC
lu
ounted
m
12 5 W
p
o
t
d load
pole
e
l
t
a
c
n
e
o
n
i
nt
Con
Conve
units
50
1 10
* HS E
g
V-E Plu
W (NA
-In)
NNIO
E Ds
30 W L
50 uni
ts
s*:
Saving
ear
kWh/y
19,320
2 /year
g CO
k
5
1
5
,
11
s/year
pou
2,318
nd
2 output is year
d CO
per
te
la
u
ration
alc
of ope
, the c
rs
ix
u
m
o
y
h
0
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nd 420
urrent
kWh a
any’s c
£ .12/
rm
n
e
o
G
d
n
do
base
*Base
avings
kWh. S
59 6 g /
14 . 15
L I N E A . TA R O . N OVA R A L
Attractive styling and engineered design that pays for itself.
LED modules have an exceptionally long lifespan. Today, service lives of over
80,000 can be expected.
The LED illuminating bollards feature extremely wide and uniform light
distribution. Moreover, their construction and materials are vandal proof.
ADDE D ADVA NTAG E S
· Insect friendly, UV free light
· Virtually maintenance free
· Minimum glass temperature
A
L I N EDs
MPLE
CI
I
F
F
E
X A evious situation:
E
Y
Pr
park
y in a
ENC
thwa
ide pa
w
d 85 W
e
r
t
ted loa
3-me
c
e
n
n
Co
its
40 un
E
10 W L
2 8 uni
ts
s*:
Saving
ear
kWh/y
12 , 8 6 8
2 /year
g CO
k
5
9
4
6,
s/year
poun
1,544
d
2 output is year
d CO
per
te
la
u
ration
alc
of ope
, the c
rs
ix
u
m
o
y
h
0
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nd 420
urrent
kWh a
any’s c
£ .12/
rm
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e
o
G
d
n
do
base
*Base
avings
kWh. S
59 6 g /
16 . 17
MADR I D . OSLO . TOLE DO . BARCE LONA
A LT B E R L I N
There are now retrofit kits comprised of reflectors and electrical components for these
popular Hess models.
The Town of Volkerhausen on Lake Constance approved the retrofitting of 261
BARCELONA luminaires. Thanks to this solution, the cityscape can retain its present
appearance without forfeiting efficiency.
ADDE D B E N E F ITS
· Uniform illumination,
compliant to the DIN EN 13201 code from 2005
LONA
E
C
R
BA
amp
MPLE
CI
I
F
F
E
X A vious situation:
E
Y
Pre
mps
ENC
5 W la
E 12
nd H M
a
/ 137 W
0
8
d 89 W
HME
a
o
l
d
cte
Conne
units
261
1 TC-D
26 W l
261 un
its
s*:
Saving
ear
kWh/y
86,500
2/year
k g CO
r
3
5
5
,
51
ds/yea
2 output is
year
ted CO eration per
la
u
lc
p
ca
o
e
f
o
th
,
ix
urs
ergy m nd 4200 ho
a
ent en
/kWh
’s curr
y
2
n
.1
a
£
erm
on
d on G ings based
*Base
v
Wh. Sa
k
/
g
6
59
10 , 3
n
80 pou
18 . 19
To achieve perfect lighting, the optimum combination of the following factors is required:
1. LIGHTING DESIGN
Comprehensive, computer simulated lighting plan calculations performed by Hess provide the basis for efficient lighting solutions. Hess evaluates
the status and potential of the existing system and situation, applying the information to make accurate calculations for the specific project.
Efficient luminaires permit greater spacing distances between the lighting units, meaning fewer luminaires are required and less labour and
maintenance are required for even greater savings.
2. LIGHT SOURCES
Efficient lamps save energy and thereby money. Mercury vapour lamps are still used a great deal today, although they are grossly inefficient. Viable
alternatives are: metal halide, high-pressure sodium, efficient fluorescent and LED light sources.
3. R EF LECTO RS
Hess’s reflectors direct the light exactly where it is required, reducing light pollution and loss to a minimum while delivering superior efficacy.
4. MODERN CONTROL GEAR
Energy saving control gear is essential to cutting lighting costs. Inefficient control gear and old wiring should be replaced. Electronic ballasts are
much more efficient, long lasting and constant.
Of course, at the forefront of improving the efficiency of lighting is the
reduction of energy expense and carbon dioxide emissions.
In addition, replacement of old systems produces a significant improvement in
the quality of lighting. Improved optical conditions increase safety
– in particular traffic safety – as well as the comfort of the citizens.
Hess’s answer: Optimum lighting planning and employment of new lighting
systems for the efficient use of light output with electricity savings of fifty
percent.
5. QUALITY OF WORKMANSHIP
Outdoor lighting fixtures must hold up to a host of extreme conditions. The degree to which dust and dirt are able to ingress the luminaire, which
directly affects the efficiency, is of course dependant on the luminaire’s gasket and construction. Hess luminaires are manufactured to the highest
possible quality standards. Their carefully engineered design and solid built construction guarantee unmatched durability. Moreover, they feature
tool-less, ultra-quick maintenance, which significantly cuts operating costs.
6. LIGHTING CONTROL
Combined with intelligent light management systems, Hess street lighting luminaires are extremely versatile, automatically adjusting to the particular conditions, such as time of day, weather and traffic to provide the operator with additional savings. The simplest form of light control is the
conventional practice of using electrical relays for low traffic times of the night.
EFFICIENT
SERA reflector.
Optical systems, such as the Sera system from Hess,
use the light more effectively, directing it only where
it is needed and thereby enabling the use of sources
with reduced wattage for the same level of brightness.
T H E I D E A L S I T UAT I O N
20 . 21
LIGHTING DESIGN
Planning lighting for new and upgrade projects requires a systematic approach.
POTE NT IA L SAVI NGS
CHECKLIST FOR EFFICIENT STREETLIGHTING
Situation
Energy Savings
per luminaire kWh/year/system kWh/lifecycle
Cost Reduction
per year/system
Hess will accompany you through the four planning steps:
1
2
3
4
Evaluation of current situation and potential
Choice of lighting concept and selection of type of lighting
Residential or pedestrian zones
Luminaires with opal glass,
unshielded lamps, without reflector
Lamp: HME 80 W
Specification of components and luminaires with the intent that each product
provides the maximum energy-efficiency and light/lighting quality
44 W
44 W
44 W
3,696 kWh/a.
18,480 kWh/a.
92,400 kWh/a.
92,400 kWh/PLS
462,000 kWh/PLS
2,310,000 kWh/PLS
£ 443/a.
£ 2,218/a.
£ 11,088/a.
£ 11,088/PLS
£ 55,440/PLS
£ 277,200/PLS
Emission Reduction
per year/system
2,203 kg CO2/a.
11,014 kg CO2/a.
55,070 kg CO2/a.
1
Determination of Present Status
per product lifespan
(PLS)
55,070 kg CO2/PLS
275,352 kg CO2/PLS
1,376,760 kg CO2/PLS
20 units
100 units
500 units
104 W
104 W
104 W
8,736 kWh/a.
43,680 kWh/a.
218,400 kWh/a.
218,400 kWh/PLS
1,092,000 kWh/PLS
5,460,000 kWh/PLS
£ 1,048/a.
£ 5,242/a.
£ 26,208/a.
£ 26,208/PLS
£ 131,040/PLS
£ 655,200/PLS
5,207 kg CO2/a.
26,033 kg CO2/a.
130,166 kg CO2/a.
130,166 kg CO2/PLS
650,832 kg CO2/PLS
3,254,160 kg CO2/PLS
20 units
100 units
500 units
67 W
67 W
67 W
5,628 kWh/a.
28,140 kWh/a.
140,700 kWh/a.
140,700 kWh/PLS
703,500 kWh/PLS
3,517,500 kWh/PLS
£ 675/a.
£ 3,377/a.
£ 16,884/a.
£ 16,884/PLS
£ 84,420/PLS
£ 422,100/PLS
3,354 kg CO2/a.
16,771 kg CO2/a.
83,857 kg CO2/a.
83,857 kg CO2/PLS
419,286 kg CO2/PLS
2,096,430 kg CO2/PLS
20 units
100 units
500 units
55 W
55 W
55 W
4,620 kWh/a.
23,100 kWh/a.
115,500 kWh/a.
115,500 kWh/PLS
577,500 kWh/PLS
2,887,500 kWh/PLS
£ 554/a.
£ 2,772/a.
£ 13,860/a.
£ 13,860/PLS
£ 69,300/PLS
£ 346,500/PLS
2,754 kg CO2/a.
13,768 kg CO2/a.
68,838 kg CO2/a.
68,838 kg CO2/PLS
344,190 kg CO2/PLS
1,720,950 kg CO2/PLS
Replaced by SERA HIT COS 60 W with high
efficiency reflector and clear glass enclosure
Pedestrian zones
Sphere-shaped opal glass, unshielded lamp
without reflector
Lamp: HME 80 W
2
Evaluation and Decision
Consideration of the various upgrade options and comprehensive lighting planning/cost analysis:
· Completely new lighting design plan with greater pole spacing distances
· Installation of new poles and luminaires with same number of lighting units
· Replacement of the existing luminaires and continued use of existing poles
· Installation of retrofit kit with new reflector and lamp with less wattage
3
Final Plan
Decision for a Hess bid with comprehensive assistance:
· Determination of the most suitable wattage for the lighting application
· Decide on type of lighting system control and luminaire electronics
Replaced by RESIDENZA M HIT 20 W with high
efficiency reflector and clear glass enclosure
Today, light calculation software enables the complete photometric calculation of lighting
systems. Computer simulations enable designers to quickly visualise the new energy efficient
lighting scenarios before they are specified, purchased and installed.
Main thoroughfare streets
Old roadway lighting, previously retrofit with
HSE 150 W
Replaced by SERA HST 100 W with high
efficiency reflector and clear glass enclosure
Fixed parameters
4,200 hours per year
£ .12 per kWh
.596 kg CO2/kWh (German electricity mix from 2006, Source: UMA)
Estimated product lifespan (PLS): 25 years
22 . 23
Luminaire type/Lamp type/Wattage:
· Is the lighting system older than 20 years?
· Is the system fitted with mercury vapour or incandescent lamps?
· Are optical systems/reflectors absent (e.g. sphere-shaped with excessive upward stray emission of light)?
· Is the system without lighting control (electrical relay, infinitely variable electronic or photo controls)?
Condition of the luminaires:
· Are the enclosures, matte, not transparent, damaged or missing?
· Outdated control gear?
· Dull reflectors?
· Is the condition of the luminaires and poles such that they can be retrofit?
· Is the power lead sufficient or does it lack the necessary capacity?
· Are your maintenance costs high?
Replaced by RESIDENZA M HIT 35 W with high
efficiency reflector and clear glass enclosure
Main thoroughfare streets
Streetlights with two L 65 W fluorescent tubes
Selection of suitable lighting control system (dimmer, etc.)
20 units
100 units
500 units
per product lifespan
(PLS)
Hess Form + Light Ltd.
Suite7, Courtyard Offices,
BraxtedPark, Great Braxted,
GB - Witham Essex CM8 3GA
For further information, visit:
W W W. E F F I C I E N T- S T R E E T- L I G H T I N G . C O M
Tel: +44 (0) 1621 890 265
Fax: +44 (0) 1621 892 617
e-mail: [email protected]
www.hess.co.uk
All rights reserved.
Hess AG Form + Licht
September 2008
SP.08/08.0,5.Mz
A golden opportunity for cities and towns:
Save energy and cut overhead through investment that quickly pays for itself.
EFFICIENT STREET LIGHTING
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