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!!!
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