Light & Engineering最新文献_第8页

Microclimate Parameters Evaluation for Spaces with Windows of Different Thermal Protection 不同防热窗空间小气候参数评价

IF 0.6 4区工程技术

Light & Engineering Pub Date : 2021-10-01 DOI: 10.33383/2021-078

A. Frolova, S. Landyrev

{"title":"Microclimate Parameters Evaluation for Spaces with Windows of Different Thermal Protection","authors":"A. Frolova, S. Landyrev","doi":"10.33383/2021-078","DOIUrl":"https://doi.org/10.33383/2021-078","url":null,"abstract":"Radiation cold flows from the windows in the winter period play an important role in the formation of the room overall thermal microclimate. The compliance with the requirements of GOST 30494–2011 for the resulting temperature and the local asymmetry of the resulting temperature in the centre of the room, as well as the boundaries of its serviced area, is not subject to any verification during the expert examination of the building projects. The designers do not perform such a check due to the absence of a method for calculating the influence of the temperature of all surrounding surfaces on these indicators. The standards for reduced heat transfer resistances of windows in residential and commercial public buildings have recently been increased. However, for the buildings of medical and preventive, preschool educational, general education institutions, and boarding schools these standards have remained the same. In the proposed work, the problem of the indoor microclimate parameter assessment is solved by calculations using the example of a library reading room with higher thermal protection of the windows and a classroom of the art school, where the window thermal protection has remained the same, in the city of Irkutsk. The percentage of the facade glazing in both cases was 34.5 %. The calculations, which have been made for the coldest calculation period, showed that for windows with an increased heat transfer resistance, the heating devices of the water heating system neutralize the cooling effect of the window radiation fluxes. In the rooms with an air heating system, the optimal norms of the resulting temperature are not met. For various regions of Russia, provision should be made of larger studies as to the combinations of the window heat transfer resistance and the window size to follow the daylighting standards, when the norms of the resulting temperature and the asymmetry of the resulting temperature are not possible to be met.","PeriodicalId":49907,"journal":{"name":"Light & Engineering","volume":"2010 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82596080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Issue 05-2021 问题5 - 2021

IF 0.6 4区工程技术

Light & Engineering Pub Date : 2021-10-01 DOI: 10.33383/2021-05

引用次数: 0

Analytic Representation of Illuminance on the Earth Surface with Different Types and Conditions of Cloud Cover over the 11-Year Solar Activity Cycle 11年太阳活动周期不同云量类型和条件下地球表面照度的解析表示

IF 0.6 4区工程技术

Light & Engineering Pub Date : 2021-10-01 DOI: 10.33383/2021-007

A. V. Leonidov

引用次数: 0

Assessment of the Insolation Duration for the Facades of Buildings and Adjacent Territories under Certain Parameters of their Development 在建筑物及邻近地区发展的若干参数下，评估建筑物外墙的日照时间

IF 0.6 4区工程技术

Light & Engineering Pub Date : 2021-10-01 DOI: 10.33383/2021-069

Sergei V. Stetsky, K. Larionova

引用次数: 0

A Method of Reducing the Distorting Curvature of Insulated Glass Units Due to Partial Rarefaction in Interglass Space 一种减小中空玻璃单元因玻璃间空间部分稀疏而产生的扭曲曲率的方法

IF 0.6 4区工程技术

Light & Engineering Pub Date : 2021-10-01 DOI: 10.33383/2021-071

A. Plotnikov

{"title":"A Method of Reducing the Distorting Curvature of Insulated Glass Units Due to Partial Rarefaction in Interglass Space","authors":"A. Plotnikov","doi":"10.33383/2021-071","DOIUrl":"https://doi.org/10.33383/2021-071","url":null,"abstract":"Currently, insulated glass units (hereinafter abbreviated as IGU) are the main type of translucent filling used in curtain walls. Under the influence of climatic loads in IGU, the thickness of the inter-glass space changes, leading to the deformation of the glasses. Deformations of glass lead to optical distortions on curtain walls. The paper considers the technical solutions used in the existing engineering practice to reduce the distorting curvature of IGU: the use of more rigid external glasses as part of IGU, the use of double-skin facades with external independent single glass, the use of vacuum IGUs. A new method is proposed to reduce the distorting curvature of IGUs by fixing the thickness of the interglass space. It is achieved by installing other point or linear supports between the panes. The introduction of other supports solves the problem of reducing deformations only when IGU is compressed. When the interglass space is expanded, the supports are turned off from operation and the glass is freely deformed. Therefore, to avoid such deflections, it is necessary to pre-compress the IGU under a load equivalent to the climatic load on the IGUs operating in the construction area of the object. Calculations show that for the climatic conditions of the city of Moscow, the required degree of rarefaction the interglass spaces is only 5 % of the absolute atmospheric pressure.","PeriodicalId":49907,"journal":{"name":"Light & Engineering","volume":"16 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85139275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Approaches to the Assessment and Regulation of Daylighting in Residential and Public Buildings in Russia and Abroad 俄罗斯与国外住宅与公共建筑采光评估与规范之探讨

IF 0.6 4区工程技术

Light & Engineering Pub Date : 2021-10-01 DOI: 10.33383/2021-013

E. Voznesenskaya, Nadezhda I. Dmitrienko

引用次数: 0

Luminaires and the History of the Development of Artificial Lighting in Russia 灯具和俄罗斯人工照明发展的历史

IF 0.6 4区工程技术

Light & Engineering Pub Date : 2021-10-01 DOI: 10.33383/2021-077

K. Solovyov

引用次数: 0

Preliminary Assessment of the Energy Efficiency of theTrombe Walls in Buildings with Passive Use of Solar Energy 被动式太阳能建筑墙体能源效率的初步评价

IF 0.6 4区工程技术

Light & Engineering Pub Date : 2021-10-01 DOI: 10.33383/2021-075

A. K. Solovyov, Bi Ruipu, Nguyen Thi Khanh Phuong

{"title":"Preliminary Assessment of the Energy Efficiency of theTrombe Walls in Buildings with Passive Use of Solar Energy","authors":"A. K. Solovyov, Bi Ruipu, Nguyen Thi Khanh Phuong","doi":"10.33383/2021-075","DOIUrl":"https://doi.org/10.33383/2021-075","url":null,"abstract":"Passive use of solar energy for heating buildings in winter and cooling buildings in summer is an environmentally friendly and effective way to save energy in the operation of buildings. In different countries, especially in the middle latitudes, (30–40)% of thermal and electrical energy is consumed for heating and cooling buildings. Therefore, the use of such an inexhaustible source of energy as the sun is relevant. The method of preliminary assessment of the energy efficiency of Trombe walls for buildings in different climatic conditions, based on the energy analysis of the work of these structures in the transition periods of the year (spring – autumn), when the work of the Trombe walls is most effective, is presented. In summer, these structures can be used to activate air exchange with the drawing of cool air from shady and cool areas due to the “chimney” effect. On cold winter days and at night, when there is no sun, the walls of the Trombus act as buffer zones that reduce the temperature load on the enclosing structures. These positive qualities are additional, increasing the energy efficiency of these structures. They are not taken into account in this method. The maximum effect is achieved during the transition period. The results of computational modelling of energy savings due to the use of Trombe walls in areas with a monsoon climate in north-eastern China (Harbin and Shenyang), as well as similar climate areas of the Russian Far East (Khabarovsk and Vladivostok), located at the latitude of the cities under consideration in China, are analysed. It is shown that the efficiency of the use of Trombe walls in the transition period for heating can be up to (10–15)% in these areas. The method of determining the energy efficiency of the use of Trombe walls can be used to determine the feasibility of their use in various climatic regions at the stage of preliminary design and decision-making.","PeriodicalId":49907,"journal":{"name":"Light & Engineering","volume":"400 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77126741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

The Regularity of the Decrease in the Quantum Yield of Quantum-Wells LEDs at the Long-Term Current Flow from the ABC Model Position 从ABC模型位置看长期电流下量子阱led量子产率下降的规律

IF 0.6 4区工程技术

Light & Engineering Pub Date : 2021-10-01 DOI: 10.33383/2021-010

F. Manyakhin, L. Mokretsova

引用次数: 1

Holographic Optical Elements: Advantages and Disadvantages for Efficient Lighting, Sun Protection, and Photovoltaic Power Supply of Buildings 全息光学元件:建筑高效照明、防晒和光伏供电的优缺点

IF 0.6 4区工程技术

Light & Engineering Pub Date : 2021-10-01 DOI: 10.33383/2021-076

A. K. Solovyov, Hong-Tham T. Pham

{"title":"Holographic Optical Elements: Advantages and Disadvantages for Efficient Lighting, Sun Protection, and Photovoltaic Power Supply of Buildings","authors":"A. K. Solovyov, Hong-Tham T. Pham","doi":"10.33383/2021-076","DOIUrl":"https://doi.org/10.33383/2021-076","url":null,"abstract":"The research of holographic optical elements (HOE) was carried out very intensively in the 1980s and 1990s. They provided great advantages in high-efficiency natural light, while at the same time providing effective sun protection and did not disturb the free view from the windows. The light-directing qualities of these devices made it possible to concentrate direct and scattered solar energy on photovoltaic batteries and solar collectors for hot water supply and solar heating. However, in recent years, research in this area has become less and less frequent without any explanation. The analysis of the research carried out in the framework of one of the latest projects carried out on behalf of the European Commission under the program “Energy, Environment, and Sustainable Development” (EU Contract Number: ENK6-CT‑2000–00327) with the participation of nine research organizations, higher schools, and universities is presented. The role of each of the participants in this interdisciplinary project was to attract experienced researchers in various fields of science and use their knowledge to obtain an objective result.","PeriodicalId":49907,"journal":{"name":"Light & Engineering","volume":"23 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76714940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0