切换
资源分类
文档管理
收藏夹
最新动态
登陆
注册
关闭
返回
下载
相似
相似资源:
长江证券:氢能-顶层、配套政策快速推进,2023年电解槽招标1.61GW以上.pdf
支持气候中和园区发展的数字化工具--中德能源与能效合作.pdf
一次性纸制品生产企业碳中和实施指南.pdf
中国储能市场现状及应用研讨PPT--光伏业协会(1).pdf
团体标准-《低碳社区(近零碳排放社区)建设和评价指南》(征求意见稿).pdf
邮政快递业低碳发展路径研究与策略报告--快递协会.pdf
双碳与可持续发展实用手册-v01.03-20240301-价值前瞻-150页.pdf
头豹:2023年中国工商业储能行业系列报告(上)-峰谷价差拉大,工商业储能需求爆发可期(摘要版).pdf
数字经济-绿色电力+绿色算力协同发展,新市场孵化新业态.pdf
项目案例-光热发电设备开发与迪拜光热光伏项目介绍-43页.pdf
解码中国省级交通领域2012—2019年二氧化碳排放--世界能源研究所.pdf
欧盟新电池法与碳足迹规则PPT - 202308-亿科-23页_OCR.pdf
敏实集团碳中和白皮书.pdf
零碳园区评价通则.pdf
平安证券:绿氢化工项目将如何落地?.pdf
国贸控股集团碳达峰碳中和行动白皮书.pdf
广东省道路交通领域中长期深度减排研究--世界能源研究所.pdf
国联证券:特高压建设加速_海外需求共驱电力设备新成长.pdf
光伏行业政策月报(2024年2月第二期)--光伏行业协会.pdf
国网PPT:分布式光伏并网消纳关键技术及应用实证.pdf
风电行业3月月度报告:海风蓄势待发,二季度有望迎来招标、出货双升-240308-中信建投-28页.pdf
资源描述:
THERMAL MANAGEMENT OF PV COST EFFECTIVE COOLING METHODS SNEC 13th 2019 International Photovoltaic Power Generation and Smart Energy Conference Exhibition Industry Workshop on High Efficiency Solar Cells, Auxiliary Materials and Technologies Related June 4th 2019, 17.00-17.15 Thermal management of PV modules increases in importance ▪ Temperature losses average 11 - more than AC/DC loss, dirt dust loss ▪ Strongest growth of large scale solar in high temperature areas tropical/desert ▪ Thermal load of the cells increases due to optimized tracking system use HEAT LOSSES INCREASE STC output measure in flashtest at Tcell of 25 oC, irradiation 1.000 Watts/m2, AMN 1,5 2 Besides STC and NOCT standards and measurements, thermal management is generally ignored. NOTC measuring Tcell at 800 Watts/m2, Tambient 25 oC, wind 1 m/s, mostly around 40- 50 oC HEAT LOSSES EXPLAINED The effect of higher temperatures at the moderate working range is a drop of 6-7 in efficiency, or the equivalent of approximately 20 Wattpeak per 60-cell module The effect of high temperatures on degradation/ lifetime is not included in standard IEC tests TEMPERATURE v EFFICIENCY FOR A Si SOLAR CELL 3 Cell temperatures are however not maximized to 60oC, not even in moderate environments where they can measure 70oC or more, while they easily reach 80-90oC in desert tropic regions. This is dT of 60-70oC above STC, losing 20 output. T-AMBIENT IN oC 35o 25o 15o T-CELL IN oC 60o 40o 20o 80o HEAT LOSSES OFTEN UNDERESTIMATED DATA FROM A SINGLE DAY Sevilla, Spain- May 2019 4 Several attempts and technologies have been tested since the 1980’s All options remain small scale as they do not fit standard PV product or production, they add weight, add costs and most of them have limited effect on cooling. PHASE CHANGING MATERIALS COOLING RIBS - MASSIVE ALUMINUM PV THERMAL, WATER- COOLED SYSTEM PREVIOUS COOLING ATTEMPTS 5 New approach by COOLBACK Company RD with minimal but optimal material use. Considering measurement errors IR failures, Thermocouple, Module/Cell in temperature are only useful for comparison. For yield, the most accurate measurement is open circuit or real output Watts by sensitive instruments. NEW COOLING APPROACH FRAMED MODULE FRAME COOLBACK UNFRAMED COOLBACK 6 Cost effective cooling is obtained by substituting materials, not adding them. Re-designed and integrated frame, together with a rib design that optimizes airflow and support, promotes cooling for NO additional costs. COST EFFECTIVENESS COST SUBSTITUTION FRAME BARRIER COOLBACK PROMOTER 7 1. Mechanical design standpoint only 2. Disputable cooling effects, edge only 3. Frame blocks and locks-in heat 4. Height form limit stacking options 5. No functional integration with module UPGRADED FEATURES FOR FRAME 1. Mechanical support cooling design 2. Large surface for powerful cooling 3. Unobstructed air flow for heat removal 4. Nesting stacking volume costs 5. Integrated with backsheet mounting 8 Standard Framed Module A frame replacement with increased surface area on a module’s backside has been studied under several conditions, with varying altitude, irradiation, wind and temperature. Test locations Italy, Spain, Qatar The Netherlands PV module comparisons mono-, poly, H- pattern and back- contact technology Shape and airflows are basis of final designs and testing. THERMAL EFFECTS - SIGNIFICANT STABLE 9 Effect of lower temperatures at tracking implemented in design. LOWER TEMPERATURES source KIWA - springtime, Northern Italy 10 LANDSCAPE ORIENTATION The kWh output effect, already in fixed tilt, is significant – also at moderate temperatures. The lower temperature in everyday/ thermal cycle reduces degradation, prolonging lifespan. HIGHER OUTPUTS source KIWA, Spain – springtime PEAK 13.00-14.00 SUN 985 W/M2 PEAK AT 13.00-14.00 EXTRA 8,6 COOLBACK® MODULE REFERENCE MODULE WA TT S 11 T-AMB 29,40o C T-REF 68,90o C DAY AT 08.00-19.00 EXTRA 5,5 Wind, ambient temperature and, mainly, irradiation have an effect on output performance of PV modules. Predicting cooling gains per location is possible by measuring the temperature of the reference standard module. COOLBACK® yields an additional 1,4 extra output per 10oC above 35oC. Valid up to 4,5 m/s windspeed. LOWER HEAT LOSSES ARE PREDICTABLE 12 Footnotes ▪ COOLBACK® creates extra Watthours, no extra Wpeak ▪ NO influence on module /Wp prices, due to frame substitution – possible when produced with automated production. Retrofitting is not a cost- effective option Installation ▪ Field or flat roof sufficient ventilation is required IMPORTANT FOOTNOTES FOLLOW-UP 13 Lifetime ▪ COOLBACK® has a positive effect on temperature and stiffness both influence the real thermal cycling and therefore the aging of materials. Further research and results will be available in future presentations including SNEC Workshop Availability ▪ 4 module manufacturers supply COOLBACK® equipped modules, more to follow soon
点击查看更多>>
收藏
下载该资源
京ICP备10028102号-1
电信与信息服务业务许可证:京ICP证120154号
地址:北京市大兴区亦庄经济开发区经海三路
天通泰科技金融谷 C座 16层 邮编:102600