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Research on Evaluation System of Green Residential Buildings in Cold Areas of Sichuan 认领
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作者 Bin Cheng Cong Liu 《房屋建造与规划研究(英文)》 2020年第2期93-118,共26页
With regard to the rapid growth of China’s building area and the increasing energy consumption of buildings, green buildings have become an important issue for balancing economic development and environmental impact.... With regard to the rapid growth of China’s building area and the increasing energy consumption of buildings, green buildings have become an important issue for balancing economic development and environmental impact. However, the current evaluation systems for various types of green buildings are often unable to achieve a set of standards in practice due to the distinct regional characteristics of each region. Therefore, in view of the regional characteristics of the climate, terrain, ecology, and economic development in the cold regions of Sichuan, it is important to study the evaluation system of green residential buildings suitable for the cold regions of Sichuan. This article focuses on the regional characteristics of climate, topography, ecology, and economic development in the cold regions of Sichuan, and discusses the limitations of the current standards on the practice of green building in cold regions of Sichuan through a sociological questionnaire survey on the comfort of living in the local population. Then from the two dimensions of the advantages of traditional houses and the particularity of national culture, the strategies for the optimization and improvement of the evaluation index system for green residential buildings in the cold regions of Sichuan were proposed. After comprehensively considering the factors that affect the green residential buildings, including the regional characteristics of the cold regions of Sichuan, and the green performance of buildings, local characteristics and ethnic features were included in the evaluation system. The evaluation index system of green residential buildings in the cold regions of Sichuan, consists of 92 three-level indicators. A professional hierarchical analysis software yaahp was used to establish a multi-level hierarchical model between the indicators, and the indicators were compared with each other layer by layer to clarify the importance of the indicators. Based on this, a judgment matrix for each layer was constructed and obtained. The weight o 展开更多
关键词 Green Building Evaluation System Gold Area CONTEXT Local Standards of Si-chuan Province Residential Building
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The Case for Integrative Sustainable Development Practice Based on the Minas Conga Gold-Mining Experience in Peru 认领
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作者 Timothy J. Downs Andrea Cabrera Roa +3 位作者 Katherine Chyna Dixon Phyllis Duff Eric Pasay Hannah Silverfine 《地球科学和环境保护期刊(英文)》 2020年第5期17-40,共24页
Mining projects are among the most impactful development projects, and the most controversial. The Conga Mining Project, proposed by the U.S. based Newmont Mining Corporation, in partnership with Minas Buenaventura, w... Mining projects are among the most impactful development projects, and the most controversial. The Conga Mining Project, proposed by the U.S. based Newmont Mining Corporation, in partnership with Minas Buenaventura, was slated for the Cajamarca region of Peru. Since the Environmental Impact Assessment (EIA) was completed in 2010, controversy has escalated: public protests have precipitated a political crisis for President Humala, with several ministers resigning. The proposed project would have been made located approximately 73 km northeast of the city of Cajamarca, in the northern Peruvian Andes, in the district of Sorochuco, within an area defined by four major lakes, headwaters of rivers, and wetlands. Despite findings of “no significant impact” by the 2010 EIA, the project is currently postponed indefinitely due to the public backlash, international attention, and questions of integrity surrounding environmental and social concerns. We use the Conga Mining case to interrogate business-as-usual (BAU) design, assessment, planning, implementation and monitoring practices for extractive development in Peru, and suggest alternatives. Our analysis is based on an integrative framework that is empirically based (previously developed by the authors), one with a greater likelihood of improving sustainable development and the equity of positive and negative impacts among stakeholders. Suggestions are tailored to the setting: we pay special attention to the climate-change and socio-political contexts of Peru. We seek to exploit a shifting political landscape that is resisting BAU and countering the systematic disenfranchisement of vulnerable populations by extractive resource industries. These appear to be enabling conditions to promote the adoption of a capacity building, socio-technical enterprise approach to framing and designing sustainable development projects in Peru, with implications beyond. 展开更多
关键词 Peru MINING SUSTAINABLE Development EIA Capacity Building
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Assessment of the Current State of Qanibay al-Rammah Complex (908 AH/1502 AD), as a Procedure Precedes the Restoration Process 认领
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作者 Essam H. Mohamed 《地质学期刊(英文)》 2020年第1期71-91,共21页
An assessment should be made of the current state of the historic buildings before starting in any intervention procedures. Where, any procedures of conservation of the building must be outrun by a perfect diagnosis a... An assessment should be made of the current state of the historic buildings before starting in any intervention procedures. Where, any procedures of conservation of the building must be outrun by a perfect diagnosis according to the international conventions. Chemical, physical, mechanical properties and structural status are extremely important to give information about the current condition of Qanibay al-Rammah madrasa, which situated within Saladin square in Historic Cairo. This building has been affected by several deterioration factors since the construction and still suffering damage factors at the moment, which led to the occurrence of several damage aspects to the building, such as fissures in architectural elements, granular disintegration, loss of stone material, peeling of limestone surface, splitting in building material, the efflorescence of salts, pitting in limestone surface, black spots in stone surface, hard black crust, etc. The aim of this study is evaluation of the condition of Qanibay al-Rammah madrasa by two methods, firstly by different scientific techniques such as X-Ray Diffraction (XRD), EDX analytical methods, Scanning Electron Microscopy (SEM), Polarizing Light Microscopy (PLM), and Stereo Microscopy, and secondly by Numerical analysis based on 3D finite elements analysis to determine the critical places of the building. The followed methodology in this study allowed us to the assessment of the current status of the building by various scientific techniques to determine the real causes of damage, which must be taken into account during the intervention procedures. 展开更多
关键词 Madrasa of Qanibay al-Rammah The Current STATUS Building Materials Characteristics Structural Behavior SCIENTIFIC Techniques Numerical Analysis
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Optimal Thermal Insulation Thickness in Isolated Air-Conditioned Buildings and Economic Analysis 认领
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作者 Mousa M. Mohamed 《电子器件冷却与温度控制期刊(英文)》 2020年第2期23-45,共23页
The removal building heat load and electrical power consumption by air conditioning system are proportional to the outside conditions and solar radiation intensity. Building construction materials has substantial effe... The removal building heat load and electrical power consumption by air conditioning system are proportional to the outside conditions and solar radiation intensity. Building construction materials has substantial effects on the transmission heat through outer walls, ceiling and glazing windows. Good thermal isolation for buildings is important to reduce the transmitted heat and consumed power. The buildings models are constructed from common materials with 0 - 16 cm of thermal insulation thickness in the outer walls and ceilings, and double-layers glazing windows. The building heat loads were calculated for two types of walls and ceiling with and without thermal insulation. The cooling load temperature difference method, <em>CLTD</em>, was used to estimate the building heat load during a 24-hour each day throughout spring, summer, autumn and winter seasons. The annual cooling degree-day, <em>CDD</em> was used to estimate the optimal thermal insulation thickness and payback period with including the solar radiation effect on the outer walls surfaces. The average saved energy percentage in summer, spring, autumn and winter are 35.5%, 32.8%, 33.2% and 30.7% respectively, and average yearly saved energy is about of 33.5%. The optimal thermal insulation thickness was obtained between 7 - 12 cm and payback period of 20 - 30 month for some Egyptian Cities according to the Latitude and annual degree-days. 展开更多
关键词 Building Heat Load Cooling Load Temperature Difference Energy Saving Power Consumption Annual Cooling Degree-Day Optimal Thermal Insulation Thickness Payback Period
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Characterization of Thermo-Physical Properties of Cement-Based Blocks of Varied Sand Types Using Cost-Effective Enhancement Approach 认领
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作者 Eunice Akyereko Adjei Samuel Amos-Abanyie Siddig Omer 《能源效率(英文)》 2020年第1期14-30,共17页
The dominant property of building envelope fabric which contributes significantly to minimize electricity utilization in building is the thermo-physical properties. There is inadequate literature on representative pra... The dominant property of building envelope fabric which contributes significantly to minimize electricity utilization in building is the thermo-physical properties. There is inadequate literature on representative practical data of thermo-physical properties of the dominant building envelope components in Ghana. This study aims to use cost-effective approach to characterize the thermo-physical properties of only cement-based mortar and concrete blocks used in Ghana for building components specifically wall design. Mixed methods research design was employed to achieving the aim. A questionnaire survey was used among sampled building fabric components manufacturers to pick representative data on thermos-physical properties of their mortar and concrete blocks. Also, an experimental procedure employing a transient technique with a TCi Thermal Analyser was used to determine the thermo-physical properties of selected mortar and concrete blocks from Ghana in addition to designed parametric mortar and concrete blocks with varied ratios obtained from the survey were undertaken at University of Nottingham. From the study, a trend of decreasing thermal conductivity and thermal effusivity with corresponding decreasing sand content was observed with all the different sand types. The thermal conductivities of both mortar and concrete parametric blocks meet the range of expected standard values outlined in Chattered Institute of Building Services Engineers (CIBSE) Guide A. The major limitation of the work is the dimension of the sample size;which is not inconsistent with standard block size due to the experimental setup used. It is expected that, the characterization of the predominant cement-based building fabrics components will contribute to improved building performance analysis with significant savings in electricity utilization for space cooling. 展开更多
关键词 Building Envelop THERMAL Conductivity THERMAL Effusivity TCI THERMAL Analyser CEMENT-BASED Fabric COST-EFFECTIVE ENHANCEMENT APPROACH Ghana
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Energy Auditing and Improvement Scheme for Faculty of Applied Medical Sciences at Taibah University 认领
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作者 Khaled S. AlQdah Osama Alhazmi +2 位作者 Mustafa Mohammad Abdulelah Alzahrani Hussein Alaqeel 《能源效率(英文)》 2020年第1期64-80,共17页
In this work, a survey is used to investigate the current energy performance for Faculty of Applied Medical Sciences (previously Faculty of Engineering) at Taibah University in Medina city. The results of the survey s... In this work, a survey is used to investigate the current energy performance for Faculty of Applied Medical Sciences (previously Faculty of Engineering) at Taibah University in Medina city. The results of the survey show that several factors affect the energy performance in this building. It revealed that the building has been poorly designed from the point of view of thermal performance. Therefore, the building energy consumption needs to be monitored and maintained through energy auditing program. To determine the energy profile, the power consumption was calculated;the cooling load was estimated and analyzed to know the actual capacity required. The level of comfort in the building has been evaluated. Against the installed air conditioning capacity of 200-ton refrigeration, the cooling load calculations showed that the maximum cooling load needed, which is in August is only 83.22-ton refrigeration. In addition, illumination levels were measured and compared to the standard levels. Based on obtained results, two solutions were proposed: to install a building management system with approximate cost of 337,904 SR and to replace the existing chiller. Finally, the payback period for the proposed system has been estimated and found to be about 5.4 years. 展开更多
关键词 AUDITING Payback PERIOD COOLING LOAD Building Management System ILLUMINATION
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A Practical Approach to Representation of Real-time Building Control Applications in Simulation 认领
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作者 Azzedine Yahiaoui 《国际自动化与计算杂志:英文版》 EI CSCD 2020年第3期464-478,共15页
Computer based automation and control systems are becoming increasingly important in smart sustainable buildings,often referred to as automated buildings(ABs),in order to automatically control,optimize and supervise a... Computer based automation and control systems are becoming increasingly important in smart sustainable buildings,often referred to as automated buildings(ABs),in order to automatically control,optimize and supervise a wide range of building performance applications over a network while minimizing energy consumption and associated green house gas emission.This technology generally refers to building automation and control systems(BACS)architecture.Instead of costly and time-consuming experiments,this paper focuses on development and design of a distributed dynamic simulation environment with the capability to represent BACS architecture in simulation by run-time coupling two or more different software tools over a network.This involves using distributed dynamic simulations as means to analyze the performance and enhance networked real-time control systems in ABs and improve the functions of real BACS technology.The application and capability of this new dynamic simulation environment are demonstrated by an experimental design,in this paper. 展开更多
关键词 Distributed dynamic simulation networked control systems building performance applications smart buildings building automation and control systems(BACS)architecture
气候区划在建筑节能中的应用与发展 认领
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作者 白鲁建 《建筑与文化》 2020年第4期173-175,共3页
建筑气候区划是指导建筑进行节能设计的气候依据。文章从发展历程、区划目的与应用、区划指标和区划方法四个方面梳理分析了20个国家和地区的27个建筑节能气候区划方案。研究发现,建筑气候区划的制定与其所处时代的建筑技术发展需求紧... 建筑气候区划是指导建筑进行节能设计的气候依据。文章从发展历程、区划目的与应用、区划指标和区划方法四个方面梳理分析了20个国家和地区的27个建筑节能气候区划方案。研究发现,建筑气候区划的制定与其所处时代的建筑技术发展需求紧密相关。现行区划方法主要为分级区划和聚类分析区划两种,采用这些方法所得区划结果均带有一定主观性。现今建筑气候区划已成为多国及地区建筑政策法规制定及实施的依据。不同地区和国家在区划指标的选取上有着显著的差异,即便区划的目的相同,采用的区划指标仍有较大差别。 展开更多
关键词 建筑 气候区划 建筑节能 气候
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Improving the Thermal Comfort of a Building by Adding a Layer of Straw over the High Floor 认领
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作者 Gollé Diouf Oumar Diallo +2 位作者 Harouna Mamadou Bal Pape Moussa Toure Salif Gaye 《房屋建造与规划研究(英文)》 2020年第3期193-202,共10页
This document deals with the thermal characterization of a building with a layer of straw above the high floor. In the current environmental context, in Senegal, buildings are the biggest consumers of energy. This is ... This document deals with the thermal characterization of a building with a layer of straw above the high floor. In the current environmental context, in Senegal, buildings are the biggest consumers of energy. This is due to the construction materials used. Almost of buildings in Senegal used concrete (cement + aggregates) as based material construction. Due to this, the buildings require air conditioning or artificial ventilation to ensure minimum comfort. In face of this situation, it becomes useful to propose methods for reducing this high energy consumption. In this work, we propose to add a layer of straw above the high floor of a building in Matam city (North Senegal). In this case, we designed and modeled one building of single room in which the walls are in briks and a concrete slab. A bale of straw is layered on this slab in order to determine its influence on the energy consumption of the building. This study shows that the straw has a strong influence on the energy consumption of a building and the slab + straw building is more energy efficient than the bare slab building. 展开更多
关键词 Thermal Comfort Energy BUILDING STRAW
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绿色建筑评价标准中关于城市微气候的讨论 认领
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作者 王茹 吕晓芳 《建筑热能通风空调》 2020年第3期78-80,共3页
本文通过比较BREEAM UK New Construction,LEED-NC和GBA China的评估标准,重点研究建筑物对城市微气候的影响。在每个标准中,能源的管理和使用是评估建筑物对微气候影响的最重要部分。在LEED-NC中,评估建筑物微气候的指标百分比相比其... 本文通过比较BREEAM UK New Construction,LEED-NC和GBA China的评估标准,重点研究建筑物对城市微气候的影响。在每个标准中,能源的管理和使用是评估建筑物对微气候影响的最重要部分。在LEED-NC中,评估建筑物微气候的指标百分比相比其他两个占其总指标的最大,其余两个比重相同。 展开更多
关键词 建筑物 城市微气候 绿色建筑评价标准
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A Creation Model from the Gell-Mann Standard Model to the Creation of Bio Cells: Based on the Assumption of Homogeneous 5D Space-Time Universe 认领
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作者 Kai Wai Wong Wan Ki Chow 《现代物理(英文)》 2020年第7期1058-1074,共17页
In this paper, we briefly go over the homogeneous 5D model field theory: from the 5D space-time inception, to its quantum field solutions given in terms of Higgs vacuum, filled with magnetic monopole bose fields of al... In this paper, we briefly go over the homogeneous 5D model field theory: from the 5D space-time inception, to its quantum field solutions given in terms of Higgs vacuum, filled with magnetic monopole bose fields of all energies. Then through the space dimension reduction projections, the Gell-Mann standard model was obtained as well as a quantum to Classical connection was made via introducing Bose distribution to the monopoles to obtain the Perelman entropy and Ricci Flow mappings. This provided us a picture to the creation of Astronomical objects, from galaxies to stars and planets. This method of splitting the monopole energy into ranges is extended to show that below the basic rest mass range of the electron and Quark, it still can be applied to explaining for the creation of the chemical elements periodic table. But perhaps the most interesting is in the lowest hundreds of Hz energy range, obtained from yet another 3 fold space symmetry breaking, into 2D × 1D, producing bio nitrogenous bases composed of 3 Carbon 12 in hexagon structures, due to preservation of the 1D monopole standing waves of this low frequencies. From that by imposing gauge changes the monopole states into DNA spectra. Since such spectra states retain the DLRO, it induces formation of charge carriers periodicity in a spherical bio cell.. It was then argued that due to cell’s surface proteins, the structure must contain partial filled VB, with “p” state hole density, and empty CB, separated from VB by a positive band gap. Such band structures resemble known HTC Cuprate ceramics. Since the HTC goes through a Superconductivity transition via the simultaneous bose exciton condensation, providing a Coulomb pressure, which reduces the band gap substantially, and induces the ODLRO transition of the hole density. The same obviously applies to the bio cells. Because of the near continuous exciton levels generated, a matching to the DNA spectra then can always occur by selective choices of proteins on the cell surface. Judging from a numerica 展开更多
关键词 5D Fermat’s Theorem Space Dimension Reduction Projections Perelman Mappings The Higgs Vacuum: A B.E. Condensed Monopole Bosons Realization of Excitonic Induced Superconducting “p” Valence Band Orbitals in Bio Cells The Final Coherent Building Block EMF Spectra: Water Carbon Hydrogen and Oxygen
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Thermal Comfort Characteristics and Its Effects on Health Status of Occupants of Residential Building Typology in a Sub-Humid Tropical Climate 认领
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作者 Douye Pereere Wodu Vincent Ezikornwor Weli Moses Okemini Nwagbara 《大气和气候科学(英文)》 2020年第2期258-271,共14页
This study examined the indoor thermal comfort characteristics and it implications for the health of the inhabitants in Yenagoa, Bayelsa state, Nigeria. The study used the experimental and survey research designs to g... This study examined the indoor thermal comfort characteristics and it implications for the health of the inhabitants in Yenagoa, Bayelsa state, Nigeria. The study used the experimental and survey research designs to gather primary data of temperature (dry and wet bulb), and perception of the inhabitants regarding thermal conditions in the study area. The effective temperature equation was used to determine the thermal comfort characteristics of the residential buildings in the study area, while the analysis of variance (ANOVA) model was used to determine the spatial variation in thermal comfort characteristics across the different land uses in the study area. The findings of the study include: the thermal comfort characteristics for the study area ranged between 27.3 ET & 29.08 ET at the dry period and at wet period 25.6 ET and 27.10 ET. The ANOVA model was significant at P < 0.05 (F-118.23, sig-0.00), indicating that there is a significant difference in the thermal comfort characteristics in the study area. The Duncan statistics however, revealed that, the GRA is the coolest when it comes to effective temperature. Furthermore, the respondents identified that;the period of discomfort is mostly afternoon (37.3%) and Nights (35.1%). Health problems as a result of poor thermal conditions include skin rashes (59.8%), heat cramps (26.4%), prickly heat (42%) and heat exhaustion (51.3%). As a result of the findings the study strongly advocates, building residential buildings with several openings and locating such openings in recognition of the wind direction. 展开更多
关键词 Thermal-Comfort RESIDENTIAL Building Effective-Temperature TROPICAL CLIMATE
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Influence of Building Information Modelling (BIM) on Engineering Contract Management in Nairobi, Kenya 认领
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作者 Hellen Nyaboke Mosse Mugwima Njuguna Charles Kabubo 《世界工程和技术(英文)》 2020年第3期329-346,共18页
Building Information Modelling (BIM) is a technology and a process that has brought changes in the construction’s traditional procurement system. Kenya lacks contractual guidelines on implementation of BIM;this makes... Building Information Modelling (BIM) is a technology and a process that has brought changes in the construction’s traditional procurement system. Kenya lacks contractual guidelines on implementation of BIM;this makes the adoption of BIM slow and difficult. Previous research has identified a gap in contractual relationships, roles and resulting risks. The objectives of this study were to investigate BIM adoption in Nairobi and to investigate the influence of BIM on Engineering Contract Management (ECM)</span><span style="font-family:Verdana;"> in Nairobi Kenya</span><span style="font-family:Verdana;">. The survey research was a descriptive study with 175 responsive questionnaires. Respondents comprised of Civil Engineers, Construction Project Managers, Architects, Quantity Surveyors, Contractors and Facility Managers. Data was collected through self-administered questionnaire and in-depth interview. Descriptive analytics, correlation and Exploratory factor analysis methods were used to analyse quantitative data. Qualitative data was analysed thematically. It emerged that adoption level was at 56.6% and shallow understanding of BIM capabilities remains to be a barrier to its adoption and implementation. It also emerged that BIM improves ECM;when time, cost, quality, collaboration and return on investment improve, ECM becomes easier. Latent factors found in BIM and ECM relationship were Legal Implications, awareness and knowledge, efficiency, versatility, mandate and leadership, and competitiveness. Further, the study found out that BIM influence on ECM demands for establishment of standards, guidelines, policy, legal framework, and regulations, which can be achieved by amending the public procurement act which dictates the operation of all the other standard forms of contract. Further research should be conducted to measure whether the understanding of BIM had positively improved. 展开更多
关键词 Building Information Modelling BIM ADOPTION Implementation COLLABORATION BIM Contractual Roles and Responsibilities CONTRACT
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Mechanical Characteristics Test of Concrete Steel Bars Available in Côte d’Ivoire 认领
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作者 Edjikémé Emeruwa 《材料科学与化学工程(英文)》 2020年第9期1-13,共13页
Buildings collapse has now become a recurrent phenomenon in C<span style="white-space:nowrap;">&#244;</span>te d’Ivoire. Therefore, this study was conducted to find out the reasons for these... Buildings collapse has now become a recurrent phenomenon in C<span style="white-space:nowrap;">&#244;</span>te d’Ivoire. Therefore, this study was conducted to find out the reasons for these disasters, and check in particular to the extent, and concrete steel bars produced in C<span style="white-space:nowrap;">&#244;</span>te d’Ivoire and used in buildings’ structures are involved. Samples having 6, 8, 10 and 12 mm in diameter steel taken from the five (5) major manufacturers or suppliers of the Ivorian market were subjected to physical, chemical and mechanical tests to determine their performance. A comparison of these results with the NF EN 10080 and NF A35 080-1 standards made it possible to calculate the probability to have out-of-standard products in a structure. Pieces having 60 cm were cut from three bars of the same thickness and then subjected to tests. These are the chemical test by optical emission spectrometer, physical tests by caliper measurements of diameter, height of bolts and ribs and calculation of linear mass, and tensile tests with the help of hydraulic press. These tests made it possible to determine the characteristics of the steel bars. Then, these characteristics were compared with standards NF EN 10080 and NF A35 080-1, in order to judge their conformity for construction. Finally, the likelihood of having non-standard steel bars in a structure is calculated. These tests indicate that the relative surfaces of the bolts of the various bars HA6, HA8, HA10 and HA12 vary from 0.146 to 0.323 respectively;0.120 to 0.312;0.101 to 0, 297 and 0.142 to 0.482. Likewise, their calculated linear masses of these bars are respectively between 28.3 mm<sup>2</sup> and 222 g/m;50.3 mm<sup>2</sup> and 395 g/m;78.5 mm<sup>2</sup> and 617 g/m;and 113 mm<sup>2</sup> and 888 g/m. In addition, their yield strengths and elongations at break vary from 344 MPa to 582 MPa and from 0.2% to 15% respectively. According to analysis of these results, 100% of steel bars would lead to a steel-concrete adhesion that c 展开更多
关键词 Building Collapse Steel Bars STANDARDS ADHESION Mechanical Performance
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文章速递Differential Impacts of Wind Energy on Sustainable Power Generation in Ghana 认领
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作者 Jones Lewis Arthur Patrick Adu-Wiafe 《电力能源(英文)》 2020年第10期84-103,共20页
Ghana has a yearly development interest for power at a rate of 83.8% in 2010, and to 12% from 2020 to 2040 but this opportunity has been farfetched with the shocks in energy generation during 1983, 1994, 1997-98, and ... Ghana has a yearly development interest for power at a rate of 83.8% in 2010, and to 12% from 2020 to 2040 but this opportunity has been farfetched with the shocks in energy generation during 1983, 1994, 1997-98, and 2006-2007 era pushing the energy sector into crisis and a consequent adverse impact of 1.5% to GDP. This study, therefore, investigated the differential impacts of wind energy to sustainable power generation in Ghana by assessing the determinants of energy supply, energy demand and supply mix for energy development, the capacity of the energy sector to develop wind power and possible challenges in developing wind power energy in Ghana. An exploratory design that adopted both qualitative and quantities approaches w</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">as</span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> applied to the study. The study population involv</span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">ing</span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> 34 sample size</span></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">s</span></span></span></span><span><span><span><span style="font-family:""><span style="font-family:Verdana;"> was accessed from a 46 population made up of management/ministers of energy and </span><span style="font-family:Verdana;">counsellors or energy experts. The study concluded that the demand for energy</span><span style="font-family:Verdana;"> in Ghana has increased over the years but without a commensurate increase in energy supply. Major reasons for the shortfall in energy supply have centred on the monopoly enjoyed by the major power producer which invariably places stress on its ability to supply energy to meet the increasing demand. It also came out that wind energy has the potential to contribute to the overall energy fortunes of</span><b> </b><span style="font-family:Verdana;">Ghana. However, a focus on wind energy may not produce the required results of reducing the energy supply gap due to a preference for solar and</span><b> </b><span style="font-family:Verdana;">natural gas oils. It was also noteworthy that the need to build capacity to develop and maintain wind energy through critical, current infrastructure stance of the Ghanaian energy sector would not make this agenda of developing wind energy a reality. More so, it is important to note that the need to enhance the current weak national policy, financial backing and bridge technology gap for wind energy would be needful to realise a vibrant investment into wind energy development. 展开更多
关键词 Wind Energy Supply and Demand Technology Capacity Building Energy Policy
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膨润土对建筑石膏流变性能的影响研究 认领
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作者 邓鑫 李军 +2 位作者 卢忠远 罗凯 牛云辉 《非金属矿》 CAS CSCD 北大核心 2020年第3期1-5,共5页
以膨润土作为建筑石膏浆体工作性调节助剂,采用Viskomat NT流变仪研究了膨润土种类(钙基膨润土、钠基膨润土、锂基膨润土)及其掺量对建筑石膏浆体流变性能的影响,同时考察了膨润土对建筑石膏浆体流动度、保水率和力学性能的影响。结果表... 以膨润土作为建筑石膏浆体工作性调节助剂,采用Viskomat NT流变仪研究了膨润土种类(钙基膨润土、钠基膨润土、锂基膨润土)及其掺量对建筑石膏浆体流变性能的影响,同时考察了膨润土对建筑石膏浆体流动度、保水率和力学性能的影响。结果表明:掺膨润土建筑石膏浆体属于Hershel-Bulkley流体模型;随钠基和锂基膨润土掺量增加,建筑石膏浆体经历从剪切稀化到剪切增稠的变化,屈服应力显著提升,黏度系数逐渐降低,触变性逐渐增强,而钙基膨润土对建筑石膏浆体流变性能影响不大;膨润土提高了建筑石膏浆体增稠保水效果,对其硬化体抗折强度影响不大,降低了硬化体抗压强度。 展开更多
关键词 膨润土 建筑石膏 流变性能 力学性能
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楼宇对讲系统电声设计探讨 认领
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作者 张沫然 《电声技术》 2020年第4期28-29,共2页
随着社会经济的高速发展,楼宇对讲系统的应用范围也越来越广,不仅加快了智能建筑的发展步伐,更提高了人们的生活质量。然而,楼宇对讲系统在实际使用中,还存在着一些问题,导致语音传输质量低下。因此在今后的发展中,就要高度重视电声设... 随着社会经济的高速发展,楼宇对讲系统的应用范围也越来越广,不仅加快了智能建筑的发展步伐,更提高了人们的生活质量。然而,楼宇对讲系统在实际使用中,还存在着一些问题,导致语音传输质量低下。因此在今后的发展中,就要高度重视电声设计工作,来提高语音质量。 展开更多
关键词 楼宇 对讲系统 电声设计
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小户型住宅设计要点探讨 认领
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作者 门俊峰 《江西建材》 2020年第7期105-106,共2页
文中就小户型住宅设计工作内容进行了阐述,并就客厅、卧室、厨卫、阳台等住宅常见空间部分,分别对小户型住宅的设计要点进行了实践分析。
关键词 小户型 住宅设计 建筑
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Assessing effectiveness of existing building energy-saving reconstruction policy adapted to market development 认领
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作者 GUO Han-ding LIU Mei-chen WEI Xing 《生态经济:英文版》 2020年第2期111-119,共9页
The market development and policy matching of existing building energy-saving retrofits determine the effectiveness of policies in promoting the operation of existing building energy-saving retrofit market.Based on th... The market development and policy matching of existing building energy-saving retrofits determine the effectiveness of policies in promoting the operation of existing building energy-saving retrofit market.Based on the perspective of market development to evaluate the effectiveness of existing building energy-saving transformation policy,it is necessary to clarify the basic connotation of the effectiveness of existing building energy-saving transformation policy,systematically analyze the evaluation content,construct a multi-level evaluation index system,and select scientific and effective quantitative evaluation methods to implement a strict evaluation process. 展开更多
关键词 existing building energy-saving transformation market development policy effectiveness evaluation system grey comprehensive evaluation
Building and Environment 认领
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作者 侯恩哲 《建筑节能》 CAS 2020年第6期143-144,共2页
https://www.sciencedirect.com/journal/building-and-environment/vol/176/suppl/C Volume 176,June 2020(1)Optimizing energy consumption and occupants comfort in open-plan offices using local control based on occupancy dyn... https://www.sciencedirect.com/journal/building-and-environment/vol/176/suppl/C Volume 176,June 2020(1)Optimizing energy consumption and occupants comfort in open-plan offices using local control based on occupancy dynamic data,by Shide Salimi,Amin Hammad. 展开更多
关键词 BUILDING JOURNAL suppl
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