Procedia environmental sciences最新文献_第3页

The Impacts of Overheating Mitigation within the Life Cycle Carbon of Dwellings Under UK Future Climate 在英国未来气候下，过热缓解对住宅生命周期碳的影响

Procedia environmental sciences Pub Date : 2017-01-01 DOI: 10.1016/J.PROENV.2017.03.169

Asif Din, L. Brotas

引用次数: 3

A Sustainable Design Strategy for the Restoration of Historical Buildings 历史建筑修复的可持续设计策略

Procedia environmental sciences Pub Date : 2017-01-01 DOI: 10.1016/j.proenv.2017.03.110

T.K. Efthimiadou , Th.N. Nikolaidis , C.C. Baniotopoulos

引用次数: 8

Unsteady CFD Simulation in a Naturally Ventilated Room with a Localized Heat Source 局部热源自然通风室内非定常CFD模拟

Procedia environmental sciences Pub Date : 2017-01-01 DOI: 10.1016/j.proenv.2017.03.087

Anastasia D. Stavridou, Panagiotis E. Prinos

{"title":"Unsteady CFD Simulation in a Naturally Ventilated Room with a Localized Heat Source","authors":"Anastasia D. Stavridou, Panagiotis E. Prinos","doi":"10.1016/j.proenv.2017.03.087","DOIUrl":"10.1016/j.proenv.2017.03.087","url":null,"abstract":"<div><p>This study examines the temperature distribution and the flow field in a naturally ventilated room with a localized floor heat source. The room has an orthogonal form with a low and a high opening placed in opposite walls. The temperature of outdoor air is cooler than the initial indoor air temperature forming buoyancy-driven natural ventilation (with <em>U</em><sub><em>wind</em></sub>≈0). The problem is explored with computational simulation using a CFD software. A model validation is presented with experimental and computational results of previous investigation<sup>10,11</sup> on natural ventilation including buoyancy forces. The 3D unsteady Reynolds Averaged Navier Stokes (RANS) equations are solved in conjunction with the energy equation and the turbulence RNG <em>k-ɛ</em>model. The unsteady flow of natural ventilation with buoyancy forces is analyzed andthe vertical variation of temperature with respect to timeis investigated. A thermal stratification is formed which is justified by the respective indoor air movement. The upper buoyant layer is warmer than the bottom one, while the indoor air temperature of both layers increases with time. A thermal comfort exploration accompanies the outcoming results and provides useful information for similar problems. Finally, a number of conclusions are derived about the simulation process, the function of natural ventilation and the thermal comfort of the space in corresponding cases.</p></div>","PeriodicalId":20460,"journal":{"name":"Procedia environmental sciences","volume":"38 ","pages":"Pages 322-330"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.proenv.2017.03.087","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86499465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Thermal Performance Investigation in Cooling Season for a Corner Double Skin Façade with Rotating Glass Louvres 带有旋转玻璃百叶的角落双层立面冷季热性能研究

Procedia environmental sciences Pub Date : 2017-01-01 DOI: 10.1016/j.proenv.2017.03.083

P.G. Vatavalis, D.K. Bikas

{"title":"Thermal Performance Investigation in Cooling Season for a Corner Double Skin Façade with Rotating Glass Louvres","authors":"P.G. Vatavalis, D.K. Bikas","doi":"10.1016/j.proenv.2017.03.083","DOIUrl":"10.1016/j.proenv.2017.03.083","url":null,"abstract":"<div><p>A corner Double Skin Façade curtain walling facing south and west orientation that has been applied in Athens Greece was examined during cooling season. The external skin of the double skin façade is made out of rotating sandblasted striped glass louvres on its external skin on both elevations. During the cooling season, measurements were done on both elevations with the intention to examine in detail the performance of the curtain walling. Measurements were done using thermocouples in particular areas of the construction for several days and different methods were followed to allow the determination of the airflow in the cavity. The external skin which is adjustable was examined in vertical and inclined position with the aim to identify when it is performing properly and how its performance can be optimized. Throughout the analysis, it was realised that the South elevation is functioning ideally thanks to a multi-layered shading that is achieved by the sandblasted striped glass louvres when they are positioned inclined. On the contrary, it can be identified that the west elevation is not performing sufficiently as the vector of the solar irradiance is differing in comparison to the midday where the irradiation is facing the south orientation from a significantly different position. As a result the multi-layered shading in the west elevation is not functioning properly and for this reason the measured temperatures on both the internal skin of the Double Skin Façade and the interior of the building prove that corrective measures are required with the aim to avoid overheating problems.</p></div>","PeriodicalId":20460,"journal":{"name":"Procedia environmental sciences","volume":"38 ","pages":"Pages 86-93"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.proenv.2017.03.083","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89053580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Unlocking the Human Dimension of Energy Efficiency and Conservation: The Case of Tourist Accommodation Providers in Coron, Palawan in the Philippines 释放能源效率和节约的人类维度:菲律宾巴拉望岛科隆旅游住宿供应商的案例

Procedia environmental sciences Pub Date : 2017-01-01 DOI: 10.1016/j.proenv.2017.03.021

Geomilie S. Tumamao-Guittap , Ma. Sheilah G. Napalang

{"title":"Unlocking the Human Dimension of Energy Efficiency and Conservation: The Case of Tourist Accommodation Providers in Coron, Palawan in the Philippines","authors":"Geomilie S. Tumamao-Guittap , Ma. Sheilah G. Napalang","doi":"10.1016/j.proenv.2017.03.021","DOIUrl":"10.1016/j.proenv.2017.03.021","url":null,"abstract":"<div><p>In the light of mounting concerns related to climate change, energy efficiency and conservation (EEC) presents a cost-effective strategy that can propel the Philippines’ energy-intensive tourist accommodations sector towards sustainability. This warrants the examination of barriers that prevent capture of EEC potentials and the identification of factors that will drive adoption at a socially- optimal rate.</p><p>Coron, Palawan's small and medium enterprise (SME) dominated hospitality sector was studied using post-only correlation design. Mann-Whitney U test was used to compare perceptions, practices, energy awareness, and willingness to participate in EEC between members of the Zero Carbon Resorts project; a voluntary program aiding tourism SMEs reduce energy consumption (Case Group), and non-members (Control Group). Pearson Chi-Squared test was employed to determine factor association with membership in the program, while Ordered Logistic Regression was used to determine participation drivers in EEC.</p><p>Research revealed vast uncaptured energy-savings potential compounded with the absence of EEC laws targeting this sector. The study found that: (1) provisions for amenities, facilities and support services for guests; (2) high dependence on the grid and the prevalent use of generators; (3) low market penetration of renewable energy (RE) and energy-efficient technology; and (4) lack of knowledgeable personnel within organizations contribute to high energy expense within this sector. Despite having very little difference in perceived energy savings, energy awareness and self-reported energy-saving practices vary widely. Policy and institutional changes are required to address: (1) perceived high cost of energy-efficient technology and knowledge gap, (2) put in place necessary regulations; and (3) incentivize EEC to increase its adoption.</p></div>","PeriodicalId":20460,"journal":{"name":"Procedia environmental sciences","volume":"37 ","pages":"Pages 483-494"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.proenv.2017.03.021","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85781476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Sustainable Socio-cultural Guidelines for Neighborhood Design in Jeddah 吉达社区设计的可持续社会文化指南

Procedia environmental sciences Pub Date : 2017-01-01 DOI: 10.1016/j.proenv.2017.03.045

Khadijah Fatani , Mady Mohamed , Samah Al-Khateeb

引用次数: 10

Embodied Energy and Nearly Zero Energy Buildings: A Review in Residential Buildings 体现能源与近零能耗建筑:住宅建筑研究综述

Procedia environmental sciences Pub Date : 2017-01-01 DOI: 10.1016/j.proenv.2017.03.123

P. Chastas, T. Theodosiou, D. Bikas, K. Kontoleon

{"title":"Embodied Energy and Nearly Zero Energy Buildings: A Review in Residential Buildings","authors":"P. Chastas, T. Theodosiou, D. Bikas, K. Kontoleon","doi":"10.1016/j.proenv.2017.03.123","DOIUrl":"10.1016/j.proenv.2017.03.123","url":null,"abstract":"<div><p>Towards the EPBD recast 2010/31/EU and the nearly zero energy building (nZEB), this review addresses the whole life cycle energy analysis of residential buildings. Life Cycle Energy Analysis (LCEA) of 90 case studies of residential buildings is evaluated with a specific focus on the normalization procedure that follows the principles of Product Category Rule (PCR) 2014:02 for buildings. The normalization procedure provided a minimization of the sample by considering issues of comparability, the omissions in the boundaries of the system, the LCI method and the updating on the energy efficiency definition of the building. Results indicate that the use of different LCI methods leads to an important fluctuation in the absolute values of embodied energy as the embodied energy of annZEB calculated with process analysis is lower than every case study calculated with hybrid input-output analysis without including nZEBs. The share of embodied energy in low energy buildings could reach up to 57% -or even up to 83% when renewable energy sources are used for electricity production- and in nZEBs up to 100% even though a significant reduction in the total life cycle energy is identified. The increase in embodied energy and a difference of at least 17% in the share of embodied energy between low energy and nearly zero energy buildings indicate that maybe LCEA should be considered in energy efficiency regulations along with further standardization.</p></div>","PeriodicalId":20460,"journal":{"name":"Procedia environmental sciences","volume":"38 ","pages":"Pages 554-561"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.proenv.2017.03.123","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89073404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 49

The Applicability of LEED of New Construction (LEED-NC) in the Middle East 新建筑LEED (LEED- nc)在中东地区的适用性☆

Procedia environmental sciences Pub Date : 2017-01-01 DOI: 10.1016/j.proenv.2017.03.044

Rasha A. Moussa , Alshimaa A. Farag

引用次数: 11

Numerical Analysis and Modelling of Heat Transfer Processes through Perforated Clay Brick Masonry Walls 多孔粘土砖砌体墙体传热过程的数值分析与建模

Procedia environmental sciences Pub Date : 2017-01-01 DOI: 10.1016/j.proenv.2017.03.112

G. Kanellopoulos, V.G. Koutsomarkos, K.J. Kontoleon, K. Georgiadis-Filikas

{"title":"Numerical Analysis and Modelling of Heat Transfer Processes through Perforated Clay Brick Masonry Walls","authors":"G. Kanellopoulos, V.G. Koutsomarkos, K.J. Kontoleon, K. Georgiadis-Filikas","doi":"10.1016/j.proenv.2017.03.112","DOIUrl":"10.1016/j.proenv.2017.03.112","url":null,"abstract":"<div><p>The aim of this study is to analyse the thermal behaviour of walls corresponding to perforated clay brick masonry layers. The complexity of this work relies on the effect of all heat transfer mechanisms simultaneously; therefore, apart from conduction through the solid material, the propagation of heat depends on convection and radiation mechanisms in the region of the air cavities (pattern of small holes). Evidently, the geometry of perforated bricks and mortar joints of the brickwork, as well as the thermophysical properties of building materials, can modify significantly the evolution of the heat wave under specific boundary conditions at both external/internal sides of the examined layer (ambience). Furthermore, the dynamics of the actual heat flow are affected by the values of thermal-emissivity at the exposed surfaces of the brick holes. In this study, several of these issues are analysed in order to expose their influence on the thermal response of perforated clay brick masonry walls. The transient thermal analysis was carried out by employing the finite element method and by adopting a well-known CFD program focused on heat transfer processes. Secondly, the investigation has been extended to determine the corresponding thermophysical properties of an analogous solid layer (same thickness) that can produce an equivalent heat wave excitation at its interior surface. The resulting values can be useful to promote the building design and diminish the uncertainties regarding the heat flows through building envelopes; besides, assessing precisely the thermal behaviour of building configurations is essential, since the calculation of energy requirements through buildings has become of increasing importance lately.</p></div>","PeriodicalId":20460,"journal":{"name":"Procedia environmental sciences","volume":"38 ","pages":"Pages 492-499"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.proenv.2017.03.112","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83911828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 16

Energy Upgrade of Existing Dwellings in Greece; Embodied Energy Issues 希腊现有住宅的能源升级体现能源问题☆

Procedia environmental sciences Pub Date : 2017-01-01 DOI: 10.1016/j.proenv.2017.03.106

Eleftheria Alexandri , Andreas Androutsopoulos

{"title":"Energy Upgrade of Existing Dwellings in Greece; Embodied Energy Issues","authors":"Eleftheria Alexandri , Andreas Androutsopoulos","doi":"10.1016/j.proenv.2017.03.106","DOIUrl":"10.1016/j.proenv.2017.03.106","url":null,"abstract":"<div><p>When energy upgrade measures are suggested for existing buildings, usually the market availability of the selected technology, in relation to costs are taken into consideration; the latter are usually expressed as the investment payback period, in relation to the savings from energy bills that are achieved. Yet, the embodied energy payback period is not taken into consideration, in relation to the respective energy savings; this payback period is considered to be very crucial since it is an indicator of whether the specific energy saving measures should be followed, so that their embodied energy is paid back within the rest of the building's life span, showing finally whether the building should be energy upgraded or not, from a holistic energy point of view.</p><p>In this work a “typical” dwelling building apartment is considered in all four climatic zones of Greece. Materials and techniques are examined on this building, so as to achieve the minimum requirements of the existing legislative energy upgrade, as well as transforming it into a nearly zero energy building (nZEB). The parameters used are according to the Greek legislationwith regards to occupancy and building use. Materials and techniques investigated are chosen with market availability criteria. A parametric analysis of materials and techniques with different embodied energies is considered and their payback periods are examined for all case studies. Conclusions are drawn on which materials and techniques should be preferred and which should be avoided for the energy upgrade of existing buildings in the climatic zones of Greece, in order to achieve the minimum legislative energy consumption requirements or an nZEB, based on their energy payback period.</p></div>","PeriodicalId":20460,"journal":{"name":"Procedia environmental sciences","volume":"38 ","pages":"Pages 196-203"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.proenv.2017.03.106","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86208892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5