Comparative Document X 35W &150W HPS

8/14/2019 Comparative Document X 35W &150W HPS

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COMPARISON OF

A 32WFLUORESCENTBASED SYSTEM

AND A 150W HPSWITH A SYSTEMBASED ON THE

X-35W HID NEWGENERATIONLIGHT BULB

The Lighting

Group

JUAN J. RIGAU, PH.D.

ARGOS PRODUCTIVITY

SOLUTIONS, INC.

June, 2006.


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Document description

1. A comparison of a 32w PV fluorescent system withan X-35

HID lamp system is provided

2. The project required by the customer consists of apublic lighting system consisting of a lampencapsulated in a housing envelope of the Cobratype with a gel-cell maintenance free battery, aphotovoltaic panel to generate solar energy and an

electronic controller that automatically regulatesthe operation of the system.


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Objectives

To provide a public lighting system

based on its capacity to providelighting when the electrical energy gridremains inoperative.

To provide an efficient and costeffective system for public andstrategic security areas.


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Benefits

Immune to blackouts

High durability Excellent cost effectiveness

Installation in a few hours

Structurally robust and corrosionresistant

Elegant design for a better publicimage


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Benefits (cont.)

Resistant to vandalism and to theft

Lighting capacity for more than 12 hoursper day

Resistant to outdoors, earthquakes

and/or hurricanes Free of routine maintenance

Efficient and silent


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Benefits (cont.)

No costs of operation and independent

from the electrical network It saves energy (e.g., 35 watts vs. 150

watts)

White light of top color rendition(4,700 Kelvin)

High light yield

It does not contaminate the

environment

Excellent tool to increase the publicimage


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Vies of a 32 watts fluorescentlamp system with the X-35

HID PV system provided byArgos Productivity Solutions.


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TO OUR KNOW LEDGE NO OTHER BRAND OF

PV L I GHT I NG PRODU CT OFFERS, FOR

COM PAR I SON PURPOSES , D I RECT PHOTOS

OF THE I L LUM I NA TED AREA . NOTE THAT

L I GH T I N G I N T H E B A CK ROAD I S A 1 5 0 W

HPS SYSTEM .


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X-35w Fl 32w

Comparison of photometric data at 20 ft


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X-35x

Fl 32w

Comparison of photometric data at 20 ft (cont.)


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Technical remarks on the photometric data

1. The lighting pattern of the X-35 system offers, not only higher intensity of light onthe floor area, but also the enhanced color rendering index helps the eye see moreclearly.

2. Notice that the photometric results in the table provided shows that the X-35system have a maximum illumination of 1.44 Cd/sqM vs. 0.77Cd/sqM of thecompeting product. This means that the X-35 is capable of delivering 2 times more

light in the brighter spots than the current installation at a selected location.3. Also, at the minimum levels the X-35 is almost 25% brighter at the darkest spots,

providing more security to the selected location.

4. The breakthrough design characteristics of the X-35 are found only in the proposedsystem and include:

High-output white light (the color closest to natural sun light) Instant on with time to full brightness of less than two seconds

Maximum area illumination up to 100 x 25 feet . Simply put you will needfew systems for your project @ .5 foot candle minimum. Multiple solar panelmounting orientations maximizes solar absorption and run times for duskto dawn lighting

Dark Sky Compliant- No up lighting, no light trespass

Con c l u s i o n : Both the horizontal illuminance uniformity and the luminaire downward efficiency ofthe X-35 have been independently verified to be superior to other lighting systems

in the market. Those factors mean that fewer X-35 lights are needed to illuminatethe same target area, resulting in a lower total project cost.


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Lighting professionals must create the best nighttime visibility possible within the limits ofpractical design. One important step in this

process is to identify the factors that affectvisibility.

Recent research shows that the color output ofthe light sources used for roadway lighting has asignificant effect on how well we see at night.

Lumens are the standard measure of light output. Lampmanufacturers and lighting professionals generally assume thatall lumens are equal in terms of the visibility they create. Thisassumption can be proven incorrect.

A high-pressure sodium lighting system needs to produce alight level 3.9 times higher than metal halide, to be equivalentto a metal halide system, under the test conditions evaluated.For low-pressure sodium, 4.8 times more light is required to beequivalent to the metal halide level.

As a simple rule of thumb, two 250 watt HPS fixtures on a 28

ft. pole should be spaced about 60 ft. apart to achieve thedesired target. The height of the pole can affect readings.Another approach is to place pole bases at twice the lengthintervals of the pole height. So, a 25 ft light on a pole would bespaced about 50 ft apart from the next pole." Walter O.Mauldin, Director of University security, the University ofRochester (NY).

There should not be a variance of more than 4:1 between the

brightest spot and the least illuminated spot nearby.

Color Rendering Index - The CRI is a relative scale (rangingfrom 0 - 100). indicating how perceived colors match actualcolors. Two different light sources may have identical CRIvalues, but colors may appear quite different under these twosources

Source: Dr. Alan Lewis, Dean of the MichiganSchool of Optometry, and his colleagues.

Lighting fundamentals

Some definitions: LUX (LX): The metric unit of measure for illuminance of a surface. One lux is equal to one lumen per square meter.One lux equals 0.093 footcandles. One footcandle is equal to one lumen per square foot.Luminance is referred to as brightness and is measured in footlamberts (fL) or candelas/m2 (cd/m2).


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Layout #1 (X-35w) Layout #2 (Fl 32w)

Comparison of photometric data at 25 ft


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X-35w

Fl 32w


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Layout #1 (150w HPS)Layout #1 (X-35w)


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X-35w

150 HDS 100ft


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X-35

150w

HPSX-35


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25'-0" Height y 80'-0" pole spacing

Road (floor)

X35 32CCF 150HPS

Max: 1.48 0.85 5.80

Min: 0.58 0.52 3.38

Pro 0.92 0.68 4.53

Horizontal (floor)

X35 32CCF 150HPS

Max: 1.76 1.70 5.95

Min: 0.92 0.95 4.14

Pro 1.25 1.26 4.99

Visibility

X35 32CCF 150HPS

Max: 1.91 1.09 1.56

Min: 1.08 1.07 1.41

Pro 1.49 1.08 1.48

25'-0" Height 100'-0" pole spacing

Road (floor)

X35 32CCF 150HPS

Max: 1.44 0.70 4.94

Min: 0.36 0.41 2.78

Pro 0.74 0.55 3.64

Horizontal (floor)

X35 32CCF 150HPS

Max: 1.80 1.48 4.97

Min: 0.56 0.68 3.20

Pro 1.02 1.02 4.02

Visibility

X35 32CCF 150HPS

Max: 1.39 1.29 1.92

Min: 0.97 1.15 1.77

Pro 1.18 1.22 1.92

Comparison of lighting systems analyzed


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30'-0" Height y 80'-0" pole separation

Road (floor)

X35 32CCF 150HPS

Max: 1.08 0.72 4.57

Min: 0.63 0.49 2.90

Pro 0.51 0.60 3.86

Horizontal (floor)

X35 32CCF 150HPS

Max: 1.30 1.34 4.77

Min: 0.88 0.88 3.70

Pro 1.08 1.08 4.17

Visibility

X35 32CCF 150HPS

Max: 0.95 0.78 1.54

Min: 0.84 0.74 1.42

Pro 0.89 0.76 1.48

30'-0" height 100'-0" pole separation

Road (floor)

X35 32CCF 150HPS

Max: 1.03 0.59 3.79

Min: 0.43 0.38 2.36

Pro 0.66 0.48 3.12

Horizontal (floor)

X35 32CCF 150HPS

Max: 1.23 1.15 3.98

Min: 0.62 0.65 2.73

Pro 0.88 0.86 3.34

Visibility

X35 32CCF 150HPS

Max: 1.74 0.96 1.36

Min: 1.19 0.85 1.25

Pro 1.47 0.91 1.31

Comparison of lighting systems (cont.)


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Table of Recommended Illuminance LevelsThe following illuminance levels for outdoor lighting are recommended target values for lighting design goals.Illuminance levels are given in foot-candles (fc). Eavg is Average Maintained Illuminance. EminEmaxisMinimum to Maximum Maintained Illuminance.

Location Lighting Zone Eavg EminEmax Minimum

` (fc) (fc) CRI

Roadways in commercial areas 3 0.6 0.21.2 65

Roadways in residential areas 2 0.2 0.10.3 65

Roadways in rural areas* 1 0.1 00.3 65

Pedestrian crossings in commercial areas 3 1.0 0.51.5 65Sidewalks in commercial areas 3 0.6 0.21.0 65

Parking lots 3 0.5 0.11.0 65

Floodlit buildings, monuments 3 6.0 2.010.0 65(measured vertically)

Historic Area A 3 0.6 0.21.2 80

Historic Area B 3 0.6 0.21.0 80

Historic Area C 1,2 0.1 0.00.5 65

* I n t e r se ct i on s m a y r eq u i r e t h e m a x im u m i l l u m i n a t io n i n t h e g iv e n r a n g e .

S o u r c e : T o w n o f Co n c o r d A P P # 3 8

M u n i c i p a l O u t d o o r L ig h t i n g P o l i cy a n d G u i d e l in e s


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The lighting quality of the X-35 light bulb (4,700 Kelvin) is

what allows the X-35 HID system (35 watts) to successfully

compete with higher wattage systems (e.g., 150 w HighPressure Sodium) whose color rendition is poor.


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System components

Cobra Head

Solar panel

Battery envelope with

electronic controller

Luminary arm

Steel pole

Solar panel support frame

X-35 Luminary


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X-35 Luminary specification

Envelop Roadway Cobra type (identical to that

used by the Puerto Rico Electric PowerAuthority)

35 W (Absorb power)

4,700 Kelvin (Color Temperature correlation)

Type II or Type III distribution with adjustable

photometry

Transparent glass lens

Anodized aluminum reflector with 94%reflectivity


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Battery specification

13.4 Volts DC

90+ Amp-Hrs

Deep Cycle

Life expectancy 5 - 8 yrs

Maintenance free

Gel-Cell type


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Battery specification (cont.)


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Solar panel specification


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Controller


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Our warrantee

Photovoltaic panel = 20 years Gel battery = 5 years Controller = 5 years Luminarie = 3 years Housing = 15 years Supports = 5 years Electronic components = 5 years Parts and labor = 3 years

Typical required warrantee Photovoltaic panel = 15 years Gel battery = 4 years Controller = 5 years Luminarie = 3 years

Photo-sensor = 5 years Housing = 15 years Supports = 5 years Electronic components = 5 years Parts and labor = 2 years


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END OF DOCUMENT

Comparative Document X 35W &150W HPS

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