• Title/Summary/Keyword: Tempered glass

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Development of Solid State Relay(SSR) Life Prediction Device for Glass Forming Machine (유리 성형기의 무접점릴레이(SSR) 수명 예측장치 개발)

  • Yang, Sung-Kyu;Kim, Gab-Soon
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.21 no.2
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    • pp.46-53
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    • 2022
  • This paper presents the design and manufacture of a Solid State Relay (SSR) life prediction device that can predict the lifetime of an SSR, which is a key component of a glass forming machine. The lifetime of an SSR is over when the current supplied to the relay is overcurrent (20 A or higher), and the operating time is 100,000 h or longer. Therefore, the life prediction device for the SSR was designed using DSP to accurately read the current and temperature values from the current and temperature sensors, respectively. The characteristic test of the manufactured non-contact relay life prediction device confirmed that the current and temperature were safely measured. Thus, the SSR lifetime prediction device developed in this study can be used to predict the lifetime of an SSR attached to a glass forming machine.

A Study on the Design and Power Performance of a Variable Photovoltaic Lightshelf Mounted on the Windows (창호거치 태양광발전 가변형광선반 설계 및 기초적 발전성능에 관한 연구)

  • Chung, Yu-Gun
    • KIEAE Journal
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    • v.13 no.6
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    • pp.105-111
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    • 2013
  • This study aims to suggest the PV lightshelf and to evaluate the power performance of the photovoltaic systems easily mounted on the windows. For the study, the suggested systems consist of two parts as fixed and movable PV modules. Also, tempered glass and polycarbonate are used on the surface protection materials for solar cells of PV lightshelf. By using polycarbonate, the weight of PV lightshelf is lighter about 20%. The field tests are performed for five days by using real size models. The voltage, current and electric powers are measured as basic performances of PV lightshelf. Also, the irradiation, brightness and module surface temperature are measured as outside conditions. As results, the power performance of tempered glass PV lightshelf shows about 11(%) higher thant that of polycarbonate PV lightshelf. And the power performance shows about 5(%) higher in a horizontal system. This results could be used to develop the effective PV lightshelf in next study.

Determination on the Optimal Sealing Conditions of the Vacuum Glass Edge Parts using Design of Experiments Technique (실험계획법에 의한 진공유리의 모서리부 최적 접합공정조건 결정)

  • Lee, Jong-Gon;Jeon, Euy-Sik;Kim, Young-Shin;Park, Ho
    • Journal of the Korean Society of Manufacturing Technology Engineers
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    • v.21 no.1
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    • pp.40-45
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    • 2012
  • The glass edge sealing is one of the vacuum glazing core manufacturing process and it needs the high reliability for the vacuum keeping. Conventionally, the glass edge sealing had been being researched by the method that pasted the flit on the glass edge part and bonded two sheets of glass. But this way has the defect that can't make tempered glass. In order to remedy it's faults, in this paper, the glass edge was sealed by using the hydrogen mixture gas torch within the furnace. The parameter having an effect on the glass edge sealing through the basic test was set. And the correlation of the thickness of the glass edge and parameter were analyzed through the design of experiment. By using the Taguchi method, the optimal process condition for the glass edge sealing was drawn and the validity was verified.

The characteristics of alumina cement utilized for binder of glass insulators in braket (브래킷 유리애자의 접합재로 이용되는 알루미나 시멘트의 특성)

  • Shong, Kil-Mok;Jung, Jin-Soo;Han, Woon-Ki;Kim, Young-Seok;Ryu, Young-Tae;Jun, Yong-Joo
    • Proceedings of the KIEE Conference
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    • 2008.09a
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    • pp.261-262
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    • 2008
  • Damaged glass insulator that is utilized the high-speed railroad in domestic try to find the cause. This paper is investigated on the characteristics of alumina cement as the binder of class insulator. The components of glass insulator ore stub(tin), rod(tin), shed(tempered glass), and alumina cement. If composition of alumina cement is not unified, crack of alumina cement generated. As these results, cracked marks of cement is appeared and composition of alumina cement is not unified. Therefore, it is estimated that main element of long-term degradation is a alumina cement.

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Design for a Defective Product Inspection Device for the Curved Glass used in Smart-phones (스마트폰 곡면 강화유리의 불량품 검사장치 설계)

  • Kim, Han-Sol;Lee, Kyung-Jun;Jung, Dong-Yean;Lee, Yeon-Hyeong;Park, Jea-Hyun;Kim, Gab-Soon
    • Journal of Institute of Control, Robotics and Systems
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    • v.21 no.8
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    • pp.794-800
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    • 2015
  • This paper describes the design for a defective product inspection device for the curved glass used in smart-phone. Cameras are used as inspection devices to find cracks in LCDs (Liquid Crystal Displays), PDPs (Plasma Display Panels), etc. The devices used to inspect the curved glass used in smart-phone consist of a camera, two back-light apparatus, an inspection apparatus main body, and an image processing program. Camera image calibration was performed to smooth an image taken with the camera, and as a result, the average error was less than 0.12 pixels. And the image of a smart-phone's curved glass taken with the camera was processed using the produced program. As a result, the program could correctly extract the cracks on the curved glass. Thus, it is thought that the designed inspection device can successful detect cracks in curved tempered glass.

Machinability Evaluation of Sapphire Glass Using Powder Blasting (파우더 블라스팅을 이용한 사파이어 글라스의 가공성 평가)

  • Kang, Eun Ji;Kim, Jung Ho;Jang, Ho Su;Park, Dong Sam
    • Journal of the Korean Society of Manufacturing Technology Engineers
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    • v.24 no.2
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    • pp.224-230
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    • 2015
  • In this study, the machinability of sapphire glass is tested using the powder blasting method under various blasting conditions. The thickness and diameter of the sapphire glass samples were 0.4 mm and 50.8 mm (2 inch), respectively. The machined patterns from each sample were a circle, a square, and a rectangle. The powder we used was GC #400 and #800. The blasting pressures of the powders were 2, 4, and 6 bar. The scanning time of the nozzle was 20 and the scanning speeds of the nozzle were 80, 100, and 120 mm/s. Experimental results showed that machining depths increased in proportion to blasting pressure. The machining depth of GC #800 was much higher than that of GC #400, while surface roughness was worst with GC #400. These results imply that the blasting pressure and size of the blasting powder are the most important parameters for machining sapphire glass.

Manufacturing of Extinguishing Powder of Expanded Glass from Recycling Automotive Glass Powder (자동차 폐유리 분말을 이용한 팽창유리 소화약제의 제조)

  • Duk-Woo, Jeon;Jung-Ho, Park;Yong-Kwon, Lee
    • Journal of the Korean Recycled Construction Resources Institute
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    • v.10 no.4
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    • pp.547-552
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    • 2022
  • In this study, we secured a technology for manufacturing expanded glass of uniform quality by using general tempered glass, that is, window glass, among automotive glass that is scrapped, and verified whether the manufactured expanded glass can be used for lithium battery fire suppression. The process of manufacturing expanded glass using waste glass is generally divided into Crushing → Milling → Granulation → Expansion → Cooling. With several trials a nd errors. It is obtained a yield of 0.5 ø mm to 2 ø mm spherical particles of 80 % or more. By comparing the surface analysis and physical properties, a more suitable sample was selected as a fire extinguishing agent for lithium batteries, and it was confirmed that the result of the adaptability test for lithium battery fire was satisfactory.

The Variation of Electrical Characteristics of PV Module due to Mechanical Stress (기계적 스트레스에 의한 태양전지모듈의 전기적 특성변화)

  • Kong, Ji-Hyun;Ji, Yang-Geun;Kang, Gi-Hwan;Kim, Kyung-Su;Yu, Gwon-Jong;Ahn, Hyung-Kuen;Han, Deuk-Young
    • New & Renewable Energy
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    • v.6 no.1
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    • pp.38-45
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    • 2010
  • Abstract Under the physical stress on photovoltaic (PV) module, it will be warped according to elongation of the front glass and then micro-crack will be occurred in the thermally sealed solar cell. This micro-crack leads to drop of short circuit current of the PV module. This is because of increase of resistance component by micro-crack. Micro-crack at specific solar cell in the module lessens the durability of PV module with reduced output, hot-spot caused by solar cell output mismatch and increased resistance component. This study shows the relation between electrical characteristics and micro- cracks due to mechanical stress on PV module.

Solar Module Glass Coating Technology for Improvement of the transmittance (태양광 모듈용 Glass의 투과율 향상을 위한 Coating 기술 개발)

  • Jung, Jin-Su;Jung, In-Sung;Lee, Bum-Su;Jang, Jin-Ho;Ban, Seong-Tae;Kim, Jong-Il
    • 한국신재생에너지학회:학술대회논문집
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    • 2011.05a
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    • pp.120.1-120.1
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    • 2011
  • Increase the efficiency of PV modules for high-efficiency solar cells, light transmittance improvements, increasing the module, and much more research and development. Dual we light transmittance for photovoltaic module materials in low iron tempered glass in SiO2 using liquid AR implementation, light transmittance to solar modules to increase the efficiency of research.

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Research on Water-Repellent Coating Materials to Prevent Solar Module Pollution (태양광 모듈 오염 방지를 위한 발수 코팅 물질에 대한 연구 )

  • Young-A Park;Da Yeon Jung;Hyun Chul Ki
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.37 no.2
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    • pp.182-187
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    • 2024
  • Currently, the most developed new energy source is solar energy. Because solar power is installed outside, it is exposed to many pollutants. Pollutants are causing the characteristics of solar energy to deteriorate. Therefore, this study aims to develop a water-repellent coating to prevent contamination of solar modules. Silica and Titania materials are mainly used as water-repellent coating materials. In this study, it was based on silica and the contact angle characteristics were measured according to the change in the amount of silica and ammonia water added and the number of coatings. As a result of the measurement, it was confirmed that the contact angle was more than 60 degrees when 0.5 mol of TEOS was added to 50 mL and 0.15 M when 1 mL of ammonia water was added to 296.47 ml of distilled water. And it was confirmed that the contact angle improved when the number of coatings was applied twice. A water-repellent coating material was applied to low iron tempered glass used to protect dye-sensitized solar cell modules. The characteristics of the module were measured after spraying DI-Water on low-emission tempered glass with a water-repellent coating. As a result of the measurement, the efficiency of the module without application, the efficiency of the module coated once, and the module coated twice were 4.87%, 4.90%, and 4.91%, respectively. It was confirmed that the efficiency of the module increased by applying water-repellent coating. As a result of this study, it is determined that the water-repellent coating material will help improve solar power generation efficiency and lifespan by being self-cleaning and non-reflective.