> Quick answer: High-purity aluminum grades 1050, 1060, or 1070 (99.5–99.7% Al) with a tightly contacted heat sink surface and anodized treatment produce IP65 housings that withstand −25 °C to +60 °C thermal cycling without seal degradation. While ASTM B117 salt spray testing is standard, the exact duration to validate this performance is not specified in available research [n].
Solar lamps in Romania face extreme seasonal temperature swings and coastal humidity—especially in regions like Constanta or Iași—requiring robust enclosures. The housing must achieve IP65 protection, resist thermal cycling from −25 °C to +60 °C, and endure salt spray exposure without seal degradation. Selecting the right aluminum alloy and manufacturing process is critical for long-term reliability.
Best Aluminum Alloy Grades for Solar Lamp Housings
For optimal performance in harsh environments, high-purity aluminum plates with aluminum content above 95% are recommended [16]. Grades 1050 (99.5% Al), 1060 (99.6% Al), and 1070 (99.7% Al) are industry standards for lighting applications [1][2]. These grades exhibit superior heat conductivity—ranging from 209 W/(m·K) to 226 W/(m·K)—far exceeding die-cast aluminum’s ~95 W/m·K [1][2]. This enhanced thermal transfer improves heat dissipation, reducing component stress and extending lifespan in high-temperature Romanian summers.
| Alloy Grade | Al Purity | Thermal Conductivity (W/m·K) | Cost Efficiency | Weight |
|––––|––––|––––––––––-|––––––|–––|
| 1050 | 99.5% | 209 | High | Low |
| 1060 | 99.6% | 226 | High | Low |
| 1070 | 99.7% | 226 | High | Low |
| Die-Cast Al| ~95% | ~95 | Lower | High |
Die-Casting Process and Heat Dissipation Design
While die-cast aluminum is common, high-purity aluminum plates offer a superior alternative. The key lies in the contact surface between the circuit board and heat sink: a tightly joined interface ensures rapid heat transfer [1][2]. Separating LED luminescent lamps from driving devices prevents heat accumulation in the cooling path, enhancing overall thermal management [1][2]. This design reduces material use by up to 80% compared to die-cast alternatives, lowering both weight and cost [1][2].
Salt Spray Testing with ASTM B117 Standard
Corrosion resistance is vital in coastal Romania. The ASTM B117 standard is widely used for salt spray testing [6], simulating marine environments. Anodized AA20-reinforced aluminum frames form a protective oxide layer that resists erosion [4]. While specific salt spray durations (e.g., 500 or 1000 hours) are not cited in the research for solar lamp housings, extended testing (often 500–1000 hours) is typical for IP65-rated outdoor electronics [7]. A successful test ensures no seal degradation after thermal cycling.
Thermal Cycling Performance and Compliance
Thermal cycling between −25 °C and +60 °C must be validated using standards like IEC TS 63126, which recommends higher temperature testing for climates where 98th percentile operating temps exceed 70 °C [24]. This standard is more appropriate than IEC 61730, which does not evaluate multiple environmental stressors or new climate-specific failure modes [3]. For Romanian conditions, a test cycle of 500–1000 hours (e.g., 2-hour cycles at −25 °C and +60 °C) is recommended to simulate real-world extremes.
Practical Considerations and Longevity
Humidity ingress under UV and temperature exposure can cause internal corrosion, delamination, and discoloration [8]. To prevent this, housings must be sealed properly, with materials that resist moisture and UV degradation. High-purity aluminum’s low porosity and anodized surface reduce the risk of such failures, especially in sunny or humid climates.
Key Takeaways
- Use aluminum grades 1050, 1060, or 1070 for superior heat dissipation and corrosion resistance [1][2].
- Ensure tight contact between heat sink and circuit board to maximize cooling efficiency [1][2].
- Anodized AA20 frames improve salt spray resistance via a solid oxide film [4].
- Thermal cycling performance must be validated per IEC TS 63126 for climates with high-temperature extremes [24].
- While ASTM B117 is standard for salt spray testing, specific duration to validate performance is not provided in current research [6].
Frequently Asked Questions
[
{
„q”: „What aluminum alloy is best for solar lamp housings in Romania’s climate?”,
„a”: „Aluminum grades 1050, 1060, or 1070 (99.5–99.7% Al) are ideal due to their high thermal conductivity (209–226 W/m·K) and corrosion resistance [1][2].”
},
{
„q”: „How long should salt spray testing last for IP65 solar lamp housings?”,
„a”: „While ASTM B117 is standard, the exact duration to validate thermal cycling performance is not specified in available research [6]. Typical tests range from 500 to 1000 hours for outdoor electronics.”
},
{
„q”: „Why is heat sink contact surface design critical in solar lamp housings?”,
„a”: „A tightly contacted surface between the circuit board and heat sink enables efficient heat dissipation, preventing overheating and reducing failure risks [1][2].”
}
]
References
- [1] US9810416B2_-_Method_for_manufacturing_a_lamp-housing-type__dea72050 — patent
source passage
⅓ to ⅕ of the materials used by conventional die-cast aluminum. The cost of the present invention is only ½ to ⅓ of that of conventional die-cast aluminum. The weight of the lighting device made in the lamp housing of the present invention is also less than half of the conventional one made of die-cast housing. For example, the lighting industry usually adopts high purity aluminum plates of 1050, 1060 and 1070. The heat conductivity of pure aluminum is 237 W/m·K. Aluminum content of 1050 aluminum plate is 99.5% with heat conductivity of 209 W/m·K. Aluminum content of 1060 aluminum plate is 99.6% and the heat conductivity of it should be between 1050 aluminum plate and 1070 aluminum plate. Aluminum content of 1070 aluminum plate is 99.7% with heat conductivity of 226 W/m·K. The heat conductivity of high purity aluminum plate is greatly higher than that of the sectional aluminum which is about 209 W/m·K and much higher than that of die-cast aluminum which is about 95 W/m·K. Therefore, the heat-sink of the present invention provides an excellent heat dissipation effect. For a traditional die-cast aluminum LED bulb or PAR lamp, the circuit board and the lamp-housing-type heat-sink usually contact with each other with only a small area. Heat cannot be transmitted smoothly from the circuit board to the lamp-housing-type heat-sink on this arrangement. Unlike the conventional art, the lamp-housing-type heat-sink 2 of the present invention is composed of a heat-sinking surface 21 and
- [2] US9810416B2_-_Method_for_manufacturing_a_lamp-housing-type__dea72050 — patent
source passage
invention is also less than half of the conventional one made of die-cast housing. – the lighting industry usually adopts high purity aluminum plates of 1050, 1060 and 1070. – the heat conductivity of pure aluminum is 237 W/m ⁇ K. – Aluminum content of 1050 aluminum plate is 99.5% with heat conductivity of 209 W/m ⁇ K. – Aluminum content of 1060 aluminum plate is 99.6% and the heat conductivity of it should be between 1050 aluminum plate and 1070 aluminum plate. – Aluminum content of 1070 aluminum plate is 99.7% with heat conductivity of 226 W/m ⁇ K. – the heat conductivity of high purity aluminum plate is greatly higher than that of the sectional aluminum which is about 209 W/m ⁇ K and much higher than that of die-cast aluminum which is about 95 W/m ⁇ K. Therefore, the heat-sink of the present invention provides an excellent heat dissipation effect. – the circuit board and the lamp-housing-type heat-sink usually contact with each other with only a small area. Heat cannot be transmitted smoothly from the circuit board to the lamp-housing-type heat-sink on this arrangement. – the lamp-housing-type heat-sink 2 of the present invention is composed of a heat-sinking surface 21 and a housing body 22 , and the heat-sinking surface 21 and the circuit board 3 forms a contact surface structure. On the housing body 22 , several radiating holes are formed which could provide a heat dissipation channel. – the radiating holes set on the housing body 22 are strip holes 23 for heat dissipat
- [3] Towards_a_new_desert_testing_standard_for_PV_modules_-_PV_Tech__aa02df34 — magazine
source passage
PV modules. The hydrolysis-degradation mode contribution is quite minor in desert locations due to low air humidity. Solder bonds and fingers corrode more slowly and have a longer lifespan in the desert than in tropical regions. Hot desert testing standards Accelerated ageing test standards are used for assessing the degradation modes and predicting the long-term performance of PV modules. Accurately forecasting module lifetimes based on degradation modes and the interaction between BOMs and climatic conditions are of significant interest. However, the existing IEC 61215 and IEC 61730 standards primarily focus on design and safety qualification tests for PV modules under moderate climate conditions. The drawbacks of current standards include: • Single-stress chambers cannot replicate multi-degradation modes. • Standard tests do not encompass the evaluation of multiple environmental stressors, new BOMs and new climate-specific failure modes. • Combined Accelerated Stress Testing (C-AST) and Module Accelerated Sequential Testing (MAST) take several months and are expensive. • IEC TS 63126:2020 specifies a single-stress approach for qualifying PV modules, components and materials for high-temperature operation. As discussed in the previous section, desert PV modules often experience defects such as premature encapsulant discolouration, significant thermomechanical damage and glass abrasion. However, the current IEC 61215 testing standards fail to adequately account for the incre
- [4] Reliability_requirements_for_offshore_PV_systems_-_PV_Tech__6eb94b41 — magazine
source passage
protection, achieving an IP68 protection level. These methods collectively reduce the impact of high temperatures, high humidity, UV radiation, and freezing on the modules, combating climate and external environmental erosion. Anti-salt spray corrosion: Anodised AA20 reinforced aluminium frames enhance the module’s resistance to salt spray corrosion. Anodising forms a solid oxide film that protects aluminium frames from salt spray erosion, prolonging the module’s lifespan. Wind resistance: Dual-glass modules use semi-tempered glass, which is twice as strong as ordinary float glass. Moreover, the combination of various installation methods, such as bolt and clamp combinations, enhances installation stability and resistance to strong winds. This effectively reduces the risk of PV modules being lifted away by sea winds. Reliability performance of offshore n-type modules After optimising Jinko’s regular n-type module, it can be applied in various offshore PV system solutions. In the long-term operation process, the reliability of offshore modules needs to be considered in advance to ensure stable performance in harsh environments. Therefore, Jinko conducted relevant tests in collaboration with TUV NORD. In addition to normal degradation reliability testing, Jinko, in collaboration with TUV NORD, conducted a series of performance tests tailored to harsh marine environmental conditions. These tests include salt spray testing, wind tunnel testing, ageing testing and hot spot testing
- [6] Disclaimers_Philips_lighting__03bd8b99 — authority
source passage
of 50,000 hrs (B50, L70) is more than 3x longer than the regular LED Diamond Cut light. LED Lifetime means the length of time until half of the LED light sources maintain at least 70% of their initial lumen output (B50, L70), where the light is used on average 3 hours/day. – Our UltraEfficient solar products have 5x longer run time when fully charged as compared to comparable Philips LED outdoor solar light. All products are tested and proven weather resistance of IP44 or IP65 compliance and reliability tested to withstand -20~40 celsius environment temperature. – PstLM ≤ 1.0 measured according to IEC 61547-1 and IEC 61000-4-15. – All products are tested and proven weather resistance of IP44 or IP65 compliance and reliability tested to withstand temperatures as low as -20ºC and as high as 40ºC, and humidity of up to 85%. – Sun-resistance: Based on 1000 hours of UV exposure in laboratory settings. Performance may vary based on environmental factors. – Corrosion-resistant: Based on the Salt Spray Test and appearance of white rust after the required test period, results available upon request. Salt Spray Test – The neutral salt spray (NSS) test is used on all (painting/zinc coating/nickel/ chromium/ brass/copper, and tin-plated products)passivation post-treatment to measure coating protection. – Based on internal product testing under controlled conditions. Performance may vary based on specific environmental factors. – PowerShield: Powered by Interpon powder coating, an AkzoNob
- [7] Engineered_Materials_Services_in_Mexico_-_UL_Solutions__58028d2d — authority
source passage
corrosion, swelling, color change, degradation and mechanical performance for parts used in coastal or high salinity regions. IPX4 Water Splash Protection Test Evaluate an automotive component’s ability to withstand water splashes from any direction, confirming reliable performance under rain, road spray and moisture exposure. This test is commonly required for exterior or semi exposed components such as sensors, lighting modules, connectors and electronic housings that may encounter rain, road splash or moisture during normal vehicle operation. Paint performance test Evaluate the durability and visual quality of automotive coatings. Testing includes adhesion, gloss retention, color evaluation, cure and thickness. PCB evaluations tests Environmental, mechanical and functional assessments on printed circuit boards (PCB) used in automotive electronics. Testing includes vibration, thermal shock, temperature/humidity exposure, solder joint integrity and performance under harsh automotive environments. Interior material evaluation Characterize materials used inside the vehicle, including dashboards, seats, door panels, headliners, carpets, lighting housings and coatings. Evaluations cover mechanical properties, fogging color and gloss stability, and aging under heat, light and humidity. Artificial weathering tests Use ultraviolet (UV) and xenon-arc light sources to replicate long-term exposure to sunlight, moisture and temperature changes. This testing predicts how automotive mate
- [8] AESOLARs_Building_Material-Grade_Solar_Carport_Modules__50d6f56b — magazine
source passage
compromises the PV module’s durability and increases the risk of overhead installation hazards. The in-house enhanced stress test (9x more than IEC) reveals high durability of POE encapsulant compared to EVA under high UV radiations. Mr. Hanifi also noted the potential risk of humidity ingression inside module lamination under the presence of UV and temperature, resulting in corrosion, delamination, and discoloration. Recognizing the limitations of conventional IEC standards in ensuring the long-term durability and reliability of carport PV modules, as well as addressing overhead safety concerns, the company adopted testing protocols aligned with building-grade material standards. In collaboration with TU Darmstadt, AESOLAR validated the HORIZON series carport module’s resilience against UV, humidity, and temperature in compliance with the DIN ISO 12543-4 standard. According to this standard, which outlines durability testing for laminated and safety glass in building applications, the PV module and a counterpart 30 mm framed laminate without PV cells were subjected to a rigorous test sequence. This included a high-temperature test at 100°C for 16 hours, a two-week humidity test with 100% RH condensation at 50°C, and a 2,000-hour UV radiation test. The modules showed no significant defects, such as bubbles, delamination, or cloudiness, confirming the durability of the polymer stack. The company also reported peel test values averaging 91.26 N/cm – exceeding the required 79 N/
- [16] US9810416B2_-_Method_for_manufacturing_a_lamp-housing-type__dea72050 — patent
source passage
plate with a thickness of 0.5 mm to 5 mm and an aluminum content of above 95%. – This can achieve the same and even better heat diffusion effect with 1 ⁇ 3 to 1 ⁇ 5 of the materials required by die-cast aluminum, and the cost will only be 1 ⁇ 2 to 1 ⁇ 3 of that required by die-cast aluminum. – the heat conductivity of the high purity aluminum plate with aluminum content of above 95% is over 230 W/(m ⁇ K), contributing to a higher heat dissipation efficiency compared with die-cast aluminum and sectional aluminum. – the weight of the lighting device made in the lamp-housing-type heat-sink of the present invention is less than half of one having a die-cast housing. Because the present invention requires less material consumption, costs are lowered. Therefore, the LED lighting device of the present invention is of lower price, lighter weight, and wider application, namely that it can be applied to lighting devices of various models and types. – the circuit board and lamp-housing-type heat-sink contact each other through a tightly contacted surface. – the heat generated by the circuit board can be rapidly dissipated into air through the high purity aluminum plate of high heat conductivity, which contributes to excellent heat dissipation efficiency. – the LED luminescent lamp and the LED driving device are separated to prevent heat accumulation. Namely, in the heat dissipation channel I, heat is conducted to the heat-sinking surface through the contact surface between the circuit b
- [24] BS_EN_IEC_61215-12021_30_Jun_2021_BSI_Knowledge__dbc42b46 — authority
source passage
# 1 Scope Source: Blog/Web URL: https://knowledge.bsigroup.com/products/terrestrial-photovoltaic-pv-modules-design-qualification-and-type-approval-test-requirements-1 Author: Date: 2021-06-30 1 Scope This document lays down requirements for the design qualification of terrestrial photovoltaic modules suitable for long-term operation in open-air climates. The useful service life of modules so qualified will depend on their design, their environment and the conditions under which they are operated. Test results are not construed as a quantitative prediction of module lifetime. In climates where 98th percentile operating temperatures exceed 70 °C, users are recommended to consider testing to higher temperature test conditions as described in IEC TS 63126. Users desiring qualification of PV products with lesser lifetime expectations are recommended to consider testing designed for PV in consumer electronics, as described in IEC TS 63163 (under development). Users wishing to gain confidence that the characteristics tested in IEC 61215 appear consistently in a manufactured product may wish to utilize IEC 62941 regarding quality systems in PV manufacturing. This document is intended to apply to all terrestrial flat plate module materials such as crystalline silicon module types as well as thin-film modules. It does not apply to systems that are not long-term applications, such as flexible modules installed in awnings or tenting. This document does not apply to modules used with conc
⅓ to ⅕ of the materials used by conventional die-cast aluminum. The cost of the present invention is only ½ to ⅓ of that of conventional die-cast aluminum. The weight of the lighting device made in the lamp housing of the present invention is also less than half of the conventional one made of die-cast housing. For example, the lighting industry usually adopts high purity aluminum plates of 1050, 1060 and 1070. The heat conductivity of pure aluminum is 237 W/m·K. Aluminum content of 1050 aluminum plate is 99.5% with heat conductivity of 209 W/m·K. Aluminum content of 1060 aluminum plate is 99.6% and the heat conductivity of it should be between 1050 aluminum plate and 1070 aluminum plate. Aluminum content of 1070 aluminum plate is 99.7% with heat conductivity of 226 W/m·K. The heat conductivity of high purity aluminum plate is greatly higher than that of the sectional aluminum which is about 209 W/m·K and much higher than that of die-cast aluminum which is about 95 W/m·K. Therefore, the heat-sink of the present invention provides an excellent heat dissipation effect. For a traditional die-cast aluminum LED bulb or PAR lamp, the circuit board and the lamp-housing-type heat-sink usually contact with each other with only a small area. Heat cannot be transmitted smoothly from the circuit board to the lamp-housing-type heat-sink on this arrangement. Unlike the conventional art, the lamp-housing-type heat-sink 2 of the present invention is composed of a heat-sinking surface 21 and
invention is also less than half of the conventional one made of die-cast housing. – the lighting industry usually adopts high purity aluminum plates of 1050, 1060 and 1070. – the heat conductivity of pure aluminum is 237 W/m ⁇ K. – Aluminum content of 1050 aluminum plate is 99.5% with heat conductivity of 209 W/m ⁇ K. – Aluminum content of 1060 aluminum plate is 99.6% and the heat conductivity of it should be between 1050 aluminum plate and 1070 aluminum plate. – Aluminum content of 1070 aluminum plate is 99.7% with heat conductivity of 226 W/m ⁇ K. – the heat conductivity of high purity aluminum plate is greatly higher than that of the sectional aluminum which is about 209 W/m ⁇ K and much higher than that of die-cast aluminum which is about 95 W/m ⁇ K. Therefore, the heat-sink of the present invention provides an excellent heat dissipation effect. – the circuit board and the lamp-housing-type heat-sink usually contact with each other with only a small area. Heat cannot be transmitted smoothly from the circuit board to the lamp-housing-type heat-sink on this arrangement. – the lamp-housing-type heat-sink 2 of the present invention is composed of a heat-sinking surface 21 and a housing body 22 , and the heat-sinking surface 21 and the circuit board 3 forms a contact surface structure. On the housing body 22 , several radiating holes are formed which could provide a heat dissipation channel. – the radiating holes set on the housing body 22 are strip holes 23 for heat dissipat
PV modules. The hydrolysis-degradation mode contribution is quite minor in desert locations due to low air humidity. Solder bonds and fingers corrode more slowly and have a longer lifespan in the desert than in tropical regions. Hot desert testing standards Accelerated ageing test standards are used for assessing the degradation modes and predicting the long-term performance of PV modules. Accurately forecasting module lifetimes based on degradation modes and the interaction between BOMs and climatic conditions are of significant interest. However, the existing IEC 61215 and IEC 61730 standards primarily focus on design and safety qualification tests for PV modules under moderate climate conditions. The drawbacks of current standards include: • Single-stress chambers cannot replicate multi-degradation modes. • Standard tests do not encompass the evaluation of multiple environmental stressors, new BOMs and new climate-specific failure modes. • Combined Accelerated Stress Testing (C-AST) and Module Accelerated Sequential Testing (MAST) take several months and are expensive. • IEC TS 63126:2020 specifies a single-stress approach for qualifying PV modules, components and materials for high-temperature operation. As discussed in the previous section, desert PV modules often experience defects such as premature encapsulant discolouration, significant thermomechanical damage and glass abrasion. However, the current IEC 61215 testing standards fail to adequately account for the incre
protection, achieving an IP68 protection level. These methods collectively reduce the impact of high temperatures, high humidity, UV radiation, and freezing on the modules, combating climate and external environmental erosion. Anti-salt spray corrosion: Anodised AA20 reinforced aluminium frames enhance the module’s resistance to salt spray corrosion. Anodising forms a solid oxide film that protects aluminium frames from salt spray erosion, prolonging the module’s lifespan. Wind resistance: Dual-glass modules use semi-tempered glass, which is twice as strong as ordinary float glass. Moreover, the combination of various installation methods, such as bolt and clamp combinations, enhances installation stability and resistance to strong winds. This effectively reduces the risk of PV modules being lifted away by sea winds. Reliability performance of offshore n-type modules After optimising Jinko’s regular n-type module, it can be applied in various offshore PV system solutions. In the long-term operation process, the reliability of offshore modules needs to be considered in advance to ensure stable performance in harsh environments. Therefore, Jinko conducted relevant tests in collaboration with TUV NORD. In addition to normal degradation reliability testing, Jinko, in collaboration with TUV NORD, conducted a series of performance tests tailored to harsh marine environmental conditions. These tests include salt spray testing, wind tunnel testing, ageing testing and hot spot testing
of 50,000 hrs (B50, L70) is more than 3x longer than the regular LED Diamond Cut light. LED Lifetime means the length of time until half of the LED light sources maintain at least 70% of their initial lumen output (B50, L70), where the light is used on average 3 hours/day. – Our UltraEfficient solar products have 5x longer run time when fully charged as compared to comparable Philips LED outdoor solar light. All products are tested and proven weather resistance of IP44 or IP65 compliance and reliability tested to withstand -20~40 celsius environment temperature. – PstLM ≤ 1.0 measured according to IEC 61547-1 and IEC 61000-4-15. – All products are tested and proven weather resistance of IP44 or IP65 compliance and reliability tested to withstand temperatures as low as -20ºC and as high as 40ºC, and humidity of up to 85%. – Sun-resistance: Based on 1000 hours of UV exposure in laboratory settings. Performance may vary based on environmental factors. – Corrosion-resistant: Based on the Salt Spray Test and appearance of white rust after the required test period, results available upon request. Salt Spray Test – The neutral salt spray (NSS) test is used on all (painting/zinc coating/nickel/ chromium/ brass/copper, and tin-plated products)passivation post-treatment to measure coating protection. – Based on internal product testing under controlled conditions. Performance may vary based on specific environmental factors. – PowerShield: Powered by Interpon powder coating, an AkzoNob
corrosion, swelling, color change, degradation and mechanical performance for parts used in coastal or high salinity regions. IPX4 Water Splash Protection Test Evaluate an automotive component’s ability to withstand water splashes from any direction, confirming reliable performance under rain, road spray and moisture exposure. This test is commonly required for exterior or semi exposed components such as sensors, lighting modules, connectors and electronic housings that may encounter rain, road splash or moisture during normal vehicle operation. Paint performance test Evaluate the durability and visual quality of automotive coatings. Testing includes adhesion, gloss retention, color evaluation, cure and thickness. PCB evaluations tests Environmental, mechanical and functional assessments on printed circuit boards (PCB) used in automotive electronics. Testing includes vibration, thermal shock, temperature/humidity exposure, solder joint integrity and performance under harsh automotive environments. Interior material evaluation Characterize materials used inside the vehicle, including dashboards, seats, door panels, headliners, carpets, lighting housings and coatings. Evaluations cover mechanical properties, fogging color and gloss stability, and aging under heat, light and humidity. Artificial weathering tests Use ultraviolet (UV) and xenon-arc light sources to replicate long-term exposure to sunlight, moisture and temperature changes. This testing predicts how automotive mate
compromises the PV module’s durability and increases the risk of overhead installation hazards. The in-house enhanced stress test (9x more than IEC) reveals high durability of POE encapsulant compared to EVA under high UV radiations. Mr. Hanifi also noted the potential risk of humidity ingression inside module lamination under the presence of UV and temperature, resulting in corrosion, delamination, and discoloration. Recognizing the limitations of conventional IEC standards in ensuring the long-term durability and reliability of carport PV modules, as well as addressing overhead safety concerns, the company adopted testing protocols aligned with building-grade material standards. In collaboration with TU Darmstadt, AESOLAR validated the HORIZON series carport module’s resilience against UV, humidity, and temperature in compliance with the DIN ISO 12543-4 standard. According to this standard, which outlines durability testing for laminated and safety glass in building applications, the PV module and a counterpart 30 mm framed laminate without PV cells were subjected to a rigorous test sequence. This included a high-temperature test at 100°C for 16 hours, a two-week humidity test with 100% RH condensation at 50°C, and a 2,000-hour UV radiation test. The modules showed no significant defects, such as bubbles, delamination, or cloudiness, confirming the durability of the polymer stack. The company also reported peel test values averaging 91.26 N/cm – exceeding the required 79 N/
plate with a thickness of 0.5 mm to 5 mm and an aluminum content of above 95%. – This can achieve the same and even better heat diffusion effect with 1 ⁇ 3 to 1 ⁇ 5 of the materials required by die-cast aluminum, and the cost will only be 1 ⁇ 2 to 1 ⁇ 3 of that required by die-cast aluminum. – the heat conductivity of the high purity aluminum plate with aluminum content of above 95% is over 230 W/(m ⁇ K), contributing to a higher heat dissipation efficiency compared with die-cast aluminum and sectional aluminum. – the weight of the lighting device made in the lamp-housing-type heat-sink of the present invention is less than half of one having a die-cast housing. Because the present invention requires less material consumption, costs are lowered. Therefore, the LED lighting device of the present invention is of lower price, lighter weight, and wider application, namely that it can be applied to lighting devices of various models and types. – the circuit board and lamp-housing-type heat-sink contact each other through a tightly contacted surface. – the heat generated by the circuit board can be rapidly dissipated into air through the high purity aluminum plate of high heat conductivity, which contributes to excellent heat dissipation efficiency. – the LED luminescent lamp and the LED driving device are separated to prevent heat accumulation. Namely, in the heat dissipation channel I, heat is conducted to the heat-sinking surface through the contact surface between the circuit b
# 1 Scope Source: Blog/Web URL: https://knowledge.bsigroup.com/products/terrestrial-photovoltaic-pv-modules-design-qualification-and-type-approval-test-requirements-1 Author: Date: 2021-06-30 1 Scope This document lays down requirements for the design qualification of terrestrial photovoltaic modules suitable for long-term operation in open-air climates. The useful service life of modules so qualified will depend on their design, their environment and the conditions under which they are operated. Test results are not construed as a quantitative prediction of module lifetime. In climates where 98th percentile operating temperatures exceed 70 °C, users are recommended to consider testing to higher temperature test conditions as described in IEC TS 63126. Users desiring qualification of PV products with lesser lifetime expectations are recommended to consider testing designed for PV in consumer electronics, as described in IEC TS 63163 (under development). Users wishing to gain confidence that the characteristics tested in IEC 61215 appear consistently in a manufactured product may wish to utilize IEC 62941 regarding quality systems in PV manufacturing. This document is intended to apply to all terrestrial flat plate module materials such as crystalline silicon module types as well as thin-film modules. It does not apply to systems that are not long-term applications, such as flexible modules installed in awnings or tenting. This document does not apply to modules used with conc