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  • Articles  (12)
  • Built environment and low-carbon society  (9)
  • Environmental Accounting  (3)
  • Oxford University Press  (12)
  • American Institute of Physics
  • Molecular Diversity Preservation International
  • Energy, Environment Protection, Nuclear Power Engineering  (12)
  • Chemistry and Pharmacology
  • Medicine
  • 1
    Publication Date: 2015-08-16
    Description: The demand for better indoor environment has led to a wide use of heating, ventilating and air conditioning (HVAC) systems. However, this demanding cannot be sustained without a strategy to reduce the energy consumption of HVAC systems. Employing advanced HVAC control is one of the strategies to maintain high-quality indoor thermal comfort with low energy consumption. This paper reviews the development of control technologies for HVAC systems. It summarizes the problems in existing reviews and gives a future perspective on HVAC control systems for occupant comfort and energy efficiency.
    Keywords: Built environment and low-carbon society
    Print ISSN: 1748-1317
    Electronic ISSN: 1748-1325
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 2
    Publication Date: 2015-08-16
    Description: In buildings without mechanical ventilation, the fresh air needed by the occupants is supplied only by air infiltration or natural ventilation. Its quantification by analytical methods is difficult, and so experimental methods such as the tracer gas technique are very useful. In this work, several case studies are presented, where one may see the potential of this technique to detect small differences in building air tightness, due to different envelope elements, namely the type of window frames and location of blinds' boxes. The applicability of this technique to other spaces rather than buildings can also be analyzed. When dealing with mechanical ventilation, it is difficult to measure the duct air flow rate precisely, because of the minimum duct length necessary to obtain a good mixing of the tracer gas with the air, when conventional probes are used. Research was carried out with the development of new probes to overcome this situation, and results are also shown. With accurate measurements of air flow rates, it is possible to reduce CO 2 emissions due to air heating or cooling in buildings.
    Keywords: Built environment and low-carbon society
    Print ISSN: 1748-1317
    Electronic ISSN: 1748-1325
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 3
    Publication Date: 2015-08-16
    Description: This paper presents the results of two field studies to examine the differences in ambient temperatures in a micro-scale environment (at distances of 50–200 m between measuring points) in two different climates during typical summer weather conditions at two similar sites in terms of construction and activities. The analysis considered the land use around the measuring locations split into three categories (built, green and open) as well as climatic conditions and studied the effect of these on ambient temperature at each measuring location. It was found that, similarly to macro-scale studies at the urban level, measuring locations with a higher green cover have a lower ambient temperature compared with measuring locations with a higher built and/or open land cover. The results provide measured evidence in two different climates that small green areas distributed within the urban environment can provide a reduction in the ambient temperature thus contributing to the mitigation of urban heat island.
    Keywords: Built environment and low-carbon society
    Print ISSN: 1748-1317
    Electronic ISSN: 1748-1325
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 4
    Publication Date: 2016-08-26
    Description: Primary energy consumption has increased by 49% and CO 2 emissions by 43% during the last two decades, and the predictions indicate that the growing trend will continue as a consequence of the notable growth in world population. Nations with developing economies (South America, Middle East, Africa and Southeast Asia) have an average annual energy consumption rate of 3.2%, whereas the rate is 1.1% for most of the developed economies (North America, Japan, Australia and Western Europe). In this paper, overall energy consumption in the UK by sector is evaluated from 1973 oil crisis to the present. The scope is split into four sectors as transport, domestic, industrial and services sector and the results for each are presented in a comparable way. Percentage of total primary energy consumption and final energy consumption by fuel type are presented. Several factors affecting the overall energy consumption are also investigated.
    Keywords: Built environment and low-carbon society
    Print ISSN: 1748-1317
    Electronic ISSN: 1748-1325
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 5
    Publication Date: 2015-02-12
    Description: This paper presents the design and the results of a reduced-scale experimental bench to study the effect of green roofs and green facades on local urban microclimate. An analysis of experimental data was carried out on three street canyons: one reference street, one street between two buildings with green roofs and one with a green wall to the west. The results show a hygrothermal effect of green envelopes on buildings on urban heat island mitigation. In the detailed analysis of these green coating techniques, we highlighted that green facades modify strongly the radiative balance of the street and improve the hygrothermal comfort in urban canyons through reducing the overheating in the street in hot summer days.
    Keywords: Built environment and low-carbon society
    Print ISSN: 1748-1317
    Electronic ISSN: 1748-1325
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 6
    Publication Date: 2015-02-12
    Description: The urban microclimate is due to complex physical interactions with the contribution of water balance, thermo-radiative exchanges and airflows. In this paper, we present and discuss modeling of heat island effects and mitigation techniques in order to give consistent results considering different time and space scales, and different fluxes (heat, water and winds) from ground to urban canopy, including buildings. The models and numerical descriptions are presented in detail and illustrated on typical examples of heat island mitigation techniques. At the neighborhood scale, alternative rainwater management techniques are studied by considering their impact on both seasonal water table depth and surface-atmosphere heat fluxes. Assessing the building thermal performance interactions with the microclimate requires adapted models that have to be refined for a better description of building envelope and systems effects. Two examples at the street and the neighborhood scale, modifying the building radiative properties or using green envelopes, show how simulation brings out the potential benefits of these techniques for the heat island mitigation and building energy performance.
    Keywords: Built environment and low-carbon society
    Print ISSN: 1748-1317
    Electronic ISSN: 1748-1325
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 7
    Publication Date: 2015-02-12
    Description: Urbanization, along with other cases of land cover and land use changes, has significant climate impacts in tropical regions with the added complexity of occurring within the context of global warming (GW). The individual and combined effects of these two factors on the surface energy balance of a tropical city are investigated by the use of an integrated atmospheric modeling approach, taking the San Juan Metropolitan Area (SJMA), Puerto Rico, as the test case. To achieve this goal, an ensemble of climate and weather simulations is performed, with climate scenarios combining urban development and sprawl with regional climate change over the past 50 years and the short-term simulations designed to test the sensitivity to different urban vegetation configurations as mitigating alternatives. As indicator of change, we use the thermal response number (TRN), which is a measure of the sensible heating to the thermal storage of a surface or region, and the Bowen ratio, which is defined as the ratio of sensible to latent heat fluxes. The TRN of the area occupied by the SJMA has decreased as a consequence of replacing the lowland coastal plain vegetation with man-made materials, indicating that it takes less energy to raise the surface temperature of the urban area, whereas the TRN of forested regions has remained virtually unchanged. The GW signal also has effects on the thermal response of the SJMA, where dryer current conditions generate lower TRN values. Differences owing to GW are more evident in the Bowen ratio pattern, mostly associated with the drier present conditions observed and its effects on sensible and latent heat fluxes. In terms of testing different mitigation strategies, the short-term simulations show that the urban area is more efficient in partitioning surface energy balance terms when green roofs are specified, as opposed to including vegetation inside the urban core.
    Keywords: Built environment and low-carbon society
    Print ISSN: 1748-1317
    Electronic ISSN: 1748-1325
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 8
    Publication Date: 2016-02-03
    Description: Since 2005, the EU ETS has provided a market-based price signal for European carbon emissions. This article reviews the literature on the formation of carbon allowance prices during phase II of the EU ETS. A consensus has emerged in the literature that allowance prices are driven by fuel prices and other variables that affect the expected amount of abatement required to meet the EU ETS emissions cap. However, this relationship is not robust, most likely because the relevant abatement technologies change with the economic conditions in which they operate. There is evidence that models that explicitly account for uncertainty about the future demand and supply of allowances are better at explaining allowance price variation during certain periods. However, our understanding of the level of the allowance price remains poor. We cannot say with any degree of confidence whether the allowance price is "right," in the sense that it reflects marginal abatement costs, or whether there is a price wedge caused by uncertainty, transaction costs, or price manipulation. Nevertheless, we find that the EU ETS market has matured in phase II compared with phase I and that banking of allowances has induced the market to incorporate the future scarcity of allowances and, as intended, to smooth the effect of temporary shocks. We argue that further research is needed in several key areas to increase our understanding of the emissions allowance market provided by the EU ETS. ( JEL : Q56, Q58)
    Keywords: Q56 - Environment and Development ; Environment and Trade ; Sustainability ; Environmental Accounting ; , Q58 - Government Policy
    Print ISSN: 1750-6816
    Electronic ISSN: 1750-6824
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Political Science , Economics
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  • 9
    Publication Date: 2016-02-05
    Description: There are many indications that Urban Heat Island (UHI) is a significant contributor to the increased emission of greenhouse gases due to the increase in energy consumption for cooling during summer. Hangzhou is currently the second hottest city in China, and this paper investigates how the West Lake and the Xixi Wetland areas in the city act as passive thermal comfort systems in improving the outdoor built environment and mitigating UHI effect. Through using ENVI-met, this research evaluates the most effective development scenarios of West Lake and Xixi Wetland area for reliving UHI effect. The energy consumptions for cooling in a typical office building located close to the West Lake and Xixi Wetland under different development scenarios of these two ecological resources are then also compared. It was shown that the average atmosphere temperature and urban heat intensity in urban area increased by more than 0.5°C if the West Lake and Xixi Wetland are both transformed to building construction areas. Moreover, the cooling demand of a typical office building in summer would increase by 10.8% due to ambient temperature increasing by 0.5°C.
    Keywords: Built environment and low-carbon society
    Print ISSN: 1748-1317
    Electronic ISSN: 1748-1325
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 10
    Publication Date: 2014-07-23
    Description: Many companies are adopting environmentally friendly management practices in developed countries. However, the benefits of a corporate environmental strategy are less clear in emerging (developing and transition) economies, where environmental regulations may be poorly enforced and social pressures to comply are weak. Thus it is important for business leaders, policymakers, and environmental activists to understand the causes and consequences of corporate environmental strategy in these economies so that they are able to implement effective strategies, develop useful policies, and promote meaningful activities, respectively. Drawing on both the theoretical and empirical literature, this article examines a broad array of drivers behind corporate environmental strategies including internal characteristics of firms, market pressures, and pressures from government and civil society. The empirical findings for developing economies (i.e., those whose physical and human resources, along with institutions, are still developing) suggest that government and civil society provide weak incentives for corporate environmental compliance, foreign ownership and foreign customer pressure improve environmental management practices, and information disclosure programs offer some promise for improving corporate environmental performance. The empirical findings for transition economies (i.e., those transitioning from reliance on the government’s allocation of resources to market-based allocations) also suggest a positive, albeit weaker, role for foreign ownership and foreign customer pressure in improving firms’ environmental performance. However, the findings also indicate that government policies, such as stricter enforcement, granting of permits, and higher rates for emission charges, are more effective in transition economies than in developing economies. ( JEL : D21, D22, K32, M14, O13, P28, P31, Q53, Q56)
    Keywords: D21 - Firm Behavior, D22 - Firm Behavior: Empirical Analysis, K32 - Environmental, Health, and Safety Law, M14 - Corporate Culture ; Social Responsibility, O13 - Agriculture ; Natural Resources ; Energy ; Environment ; Other Primary Products, P28 - Natural Resources ; Energy ; Environment, P31 - Socialist Enterprises and Their Transitions, Q53 - Air Pollution ; Water Pollution ; Noise ; Hazardous Waste ; Solid Waste ; Recycling, Q56 - Environment and Development ; Environment and Trade ; Sustainability ; Environmental Accounting
    Print ISSN: 1750-6816
    Electronic ISSN: 1750-6824
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Political Science , Economics
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  • 11
    Publication Date: 2014-01-28
    Description: Large-scale experiments with the decentralization of forest management in South Asia have changed the relationship between forests, public institutions that manage forests, and rural households. But have these institutional changes led to reductions in forest degradation and improvements in welfare? It is important to ask this question because reducing deforestation and degradation is a public policy goal, and rural households depend on forests to meet their subsistence needs. This article examines the literature on the Joint Forest Management program in India and the Community Forestry Programme in Nepal. The emerging evidence suggests that community forest management may indeed be contributing to improved forest health in South Asia. However, the impacts on household welfare appear to be far more varied but have also been less carefully studied. The article concludes that policies that further clarify resource rights and support local monitoring would strengthen and improve community forestry. ( JEL : O13, Q23, Q28, Q56)
    Keywords: O13 - Agriculture ; Natural Resources ; Energy ; Environment ; Other Primary Products, Q23 - Forestry, Q28 - Government Policy, Q56 - Environment and Development ; Environment and Trade ; Sustainability ; Environmental Accounting
    Print ISSN: 1750-6816
    Electronic ISSN: 1750-6824
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Political Science , Economics
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  • 12
    Publication Date: 2015-11-07
    Description: Ensuring the diversity of energy technology and using energy-efficient information technology are the key factors of sustainable energy politics in business. In the present study, we focus especially on choosing the best alternative to improve energy efficiency in business. In this context, this question may be analyzed via a survey method. We compare energy efficiency improvement alternatives of computer use methods in companies by TOPSIS methodology, which is one of the multi-criterion decision-making techniques.
    Keywords: Built environment and low-carbon society
    Print ISSN: 1748-1317
    Electronic ISSN: 1748-1325
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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