Thermal Simulation Report AAL 2.0 Upgrade PCB Heat sink Design

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Thermal Simulation Report of
AAL 2.0 Upgrade PCB Heat sink Design
Sathish N
Hubbell Lighting
India
05-31-2018
1
OBJECTIVES:
 To calculate the thermal behavior of a heat sink for UCM fixture with respect to NVSL219CT,
LED Datasheet considering the thermal power and product wattage are 61W and 87W
respectively.

To understand the point where heat is at maximum and minimum condition.
 The above investigation needs to be done through steady state
thermal simulation with Natural convection.
BOUNDARY CONDITIONS
Scope:
To understand the thermal behavior of a heat sink for 36LED PCB Configuration of UCM light fixture through LED
Operation.
Material Settings
Fluids: Air
Solids
Aluminum 6061
SS 304
 Acrylic
Silicon Rubber
MCPCB
LED SPEC:
LED
Fixture Wattage
Thermal Wattage
Wattage/LED
No of LED
: NVSL219CT
: 87W
: 61W
: 1.7W
: 36
Ambient Temperature:
298.2 K (25 Deg Celsius)
3
MATERIAL PROPERTIES AND AMBIENT CONDITIONS:
Material used for “UCM” is;
SI.NO
1
2
3
4
5
Part Name
Heat Sink Concept
06-01 /02
BEZL Plate
Gasket
Lens
PCB
Material Name
Al 6061
SS 304
Silicon Rubber
Acrylic
MCPCB
 LED power is taken as 1.7W/LED and other technical parameter have been considered
in accordance with NVSL219CT Spec sheet.
The ambient temperature is taken as 298.2K(25 degree Celsius)
EXPLODED VIEW OF SIMULATION MODEL:
HS Concept 06-01
HS Concept 06-02
PROV Heat Sink
5
SHORTLISTED HEAT SINK CONCEPTS:
Concept 06-01
Concept 06-02
6
Thermal Distribution Plots
7
HEAT SINK
Concept 06-01
Concept 06-02
8
PCB
Concept 06-01
Concept 06-02
9
NVSL219CT LED
Concept 06-01
Concept 06-02
10
OPTICS
Concept 06-01
Concept 06-02
11
GASKET
Concept 06-01
Concept 06-02
12
BEZL PLATE
Concept 06-01
Concept 06-02
13
THERMAL SUMMARY
Product
Thermal
Heat Sink
LED
PCB
Optics
Gasket
BEZL
Test Conditions
Wattage
Temperature (°C) at Max
HS Concept 06-01
HS Concept 06-02
HS PROV
87
61
75°C
94°C
83°C
76°C
68°C
67°C
73°C
92°C
81°C
73°C
67°C
66°C
73°C
93°C
82°C
75°C
68°C
67°C
14
OBSERVATIONS:
 Its observed that “Concept 06-02” is having good heat dissipation than “Concept 06-01”
and Existing PROV heat sinks.
Thank You!!!
16
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