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| Registros recuperados: 34 | |
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| Moss, Timothy; Leibniz Institute for Regional Development and Structural Planning, Erkner; MossT@irs-net.de; Griefahn, Barbara; Leibniz Research Centre for Working Environment and Human Factors, Dortmund;; Kloas, Werner; Leibniz Institute of Freshwater Ecology and Inland Fisheries, Berlin;; Voigt, Christian C.; Leibniz Institute for Zoo and Wildlife Research, Berlin;; Schwope, Axel; Astrophysikalisches Institut Potsdam;; Franke, Steffen ; Leibniz Institute for Plasma Science and Technology, Greifswald;; Uhrlandt, Dirk ; Leibniz Institute for Plasma Science and Technology, Greifswald;; Klenke, Reinhard; Helmholtz Centre for Environmental Research, UFZ, Leipzig ;; Wolter, Christian; Leibniz Institute of Freshwater Ecology and Inland Fisheries, Berlin; wolter@igb-berlin.de. |
| Although the invention and widespread use of artificial light is clearly one of the most important human technological advances, the transformation of nightscapes is increasingly recognized as having adverse effects. Night lighting may have serious physiological consequences for humans, ecological and evolutionary implications for animal and plant populations, and may reshape entire ecosystems. However, knowledge on the adverse effects of light pollution is vague. In response to climate change and energy shortages, many countries, regions, and communities are developing new lighting programs and concepts with a strong focus on energy efficiency and greenhouse gas emissions. Given the dramatic increase in artificial light at night (0 - 20% per year,... |
| Tipo: Peer-Reviewed article |
Palavras-chave: Artificial light; Energy efficiency; Lighting concept; Light pollution; Nightscape; Policy; Sustainability; Transdisciplinary. |
| Ano: 2010 |
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| Pereira,Priscilla A.; Yanagi Junior,Tadayuki; Silva,Joaquim P. da; Lima,Renato R. de; Campos,Alessandro T.; Abreu,Lucas H. P. |
| The spatial distribution of illuminance and the electric consumption of artificial lighting system is one of the main problems related to broiler production. Therefore, the aim of this study was to evaluate the spatial distribution of luminance level and energy efficiency of different lighting systems for broiler houses. Six types of lamps were tested in two different configurations to find the minimum illuminance of 20 and 5 lux. The tested lamps were incandescent (IL) 100 W, compact fluorescent (CFL) 34 W, mixed (ML) 160 W, sodium vapor (SVL) 70 W, T8 fluorescent tube (T8 FTL) 40 W and T5 fluorescent tube (T5 FTL) 28 W. The first four were evaluated with and without reflective light fixture and the latter two without light fixture. It was observed that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artificial lighting; Spatial variability; Energy efficiency; Aviculture. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000600002 |
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| SOUZA,SAMUEL N. M. DE; LENZ,ANDERSON M.; WERNCKE,IVAN; NOGUEIRA,CARLOS E. C.; ANTONELLI,JHONATAS; SOUZA,JULIANO DE. |
| ABSTRACT In Brazil there is a wide availability of residues, which have been used in the production of biogas and biofertilizers. The engine-generator by biogas is grid connected, and produce electricity for self-consumption and the surplus is inserted into the grid. The aim of the present study was to evaluate energetic efficiency and exhaust gas emission of two cases: two engine-generators sets of 100 kVA running on biogas, produced from residues of a poultry slaughterhouse unit (PSU) and swine fattening unit (SFU). Load variation in the engine-generator set was evaluated in the SMCP (system of protection and synchronism). There was an increase in the emission of nitrogen oxide, sulfur dioxide and exhaust gas temperature, in both cases. The elevation in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biofuel; Energy efficiency; Organic waste; Gas emission. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000400613 |
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| Celuppi,Rafael; Scapinello,Jaqueline; Andrade,Felipe G. D.; Revello,Jaime H. P.; Magro,Jacir Dal. |
| Energy consumption in the world has been growing every year. The industrial sector represents 27.32% of the world energy demand. Heating systems that use solar energy may contribute with a percentage of the total energy required by industries. This work aimed to study the use of vacuum solar collectors for water pre-heating in boilers. We used four collectors installed according to NBR 15,569; water flow through the tubes was 0.058 L/s, and temperature in the inlet and outlet pipes was measured. Results showed that instantaneous radiation, and inlet fluid and room temperatures are variables that influence the process, reaching water maximum temperature in the solar collector outlet of 97.9 °C, and efficiency of approximately 65% for most experiments. For... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solar collector; Water heating; Energy efficiency. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000300009 |
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| Priour, Daniel; Billar, Jean-yves; Morizur, Yvon; Gomez, Julio. |
| The objective of the project is firstly, to assess the fuel consumption for the fishing technique of Danish seine including assessing its distribution in each phase of its implementation and secondly, investigate potential improvements in energy consumption. Sensors on the boat and on the gear have been installed. Measurements were carried out during sea trials. The boat and gear were simulated. From these measurements and simulations, we observe that the route and fishing phase have more or less te same consumption (58% and 42%). During fishing phase, the gear focuses the main share of consumption (60%). This energy is transmitted to 2/3 by winches and 1/3 by the propulsion. Areas for improvement were evaluated: Changing the type of winch (electric vs... |
| Tipo: Text |
Palavras-chave: Efficacité énergétique; Senne danoise; Pêche; Energy efficiency; Danish seine; Fishing. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00243/35383/33897.pdf |
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| Guillen, Jordi; Cheilari, Anna; Damalas, Dimitrios; Barbas, Thomas. |
| World food production has increased substantially in the past century, thanks mostly to the increase in the use of oil as input in the production processes. This growing use of fossil fuels has negative effects, both on the environment and the production costs. Fishing is a fuel consuming food production activity, and its energy efficiency performance has worsened over time. World-wide fisheries are also suffering from overexploitation, which contributes to the poor efficiency performance, adding more pressure and criticism on this economic activity. In this paper we analyzed the energy efficiency performance of more than 20,000 European Union (EU) fishing vessels for the period 2002-2008, using the edible energy return on investment (EROI) indicator. The... |
| Tipo: Text |
Palavras-chave: Energy efficiency; Energy return on investment (EROI); Fisheries; Fishing fleet; Fuel consumption; Industrial ecology. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00323/43459/42925.pdf |
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| Zhao, Xingshu; Michaelowa, Axel. |
| This paper aims to examine the potential of the Clean Development Mechanism (CDM) to address energy- related issues during the rural transition process in China, using a case study of quickly urbanizing and industrializing Yinzhou district in coastal Zhejiang province. Yinzhou's per capita GDP reached US$ 3100 in 2002, three times China's average, and is targeted to achieve $10,000 in 2020. We assess the current energy status of Yinzhou, and provide projections of energy consumption and CO2 emissions up to the year 2020. Energy resource shortages and limited possibilities to obtain coal-fired electricity from national grid illustrate the opening gap between energy supply and demand. We find that Yinzhou's CDM potential is concentrated in efficiency... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Clean Development Mechanism; China; Urbanization; Energy efficiency; Environmental Economics and Policy; Q 540; Q 580. |
| Ano: 2004 |
URL: http://purl.umn.edu/26152 |
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| Newell, Richard G.; Jaffe, Adam B.; Stavins, Robert N.. |
| We develop a methodology for testing Hick's induced innovation hypothesis by estimating a product-characteristics model of energy-using consumer durables, augmenting the hypothesis to allow for the influence of government regulations. For the products we explored, the evidence suggests: (i) the rate of overall innovation was independent of energy prices and regulations, (ii) the direction of innovation was responsive to energy price changes for some products but not for others, (iii) energy price changes induced changes in the subset of technically feasible models that were offered for sale, (iv) this responsiveness increased substantially during the period after energy-efficiency product labeling was required, and (v) nonetheless, a sizeable portion of... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Induced innovation; Energy efficiency; Technological change; Economic incentives; Regulation; Standards; Climate change; Resource /Energy Economics and Policy; L51; O31; O38; Q40; Q20; Q48. |
| Ano: 1998 |
URL: http://purl.umn.edu/10521 |
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| Fischer, Carolyn. |
| Policies to promote energy efficiency in household appliances have different impacts, depending on the structure of market supply. If provision is perfectly competitive, markets will offer the variety of energy efficiency levels that consumers demand. However, if producers can price discriminate, using energy intensity to help segment consumer demand, consumers of low-end appliances are offered too little energy efficiency so that high-end consumers can be charged more for efficient appliances. Minimum energy efficiency standards can then improve welfare. We also consider average intensity standards, energy prices, and innovation and identify important differences in their effects on energy intensity, welfare, and consumers, depending on market structures.... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Energy efficiency; Appliance; Standards; Price discrimination; Resource /Energy Economics and Policy; Q40; Q55; Q58; O3. |
| Ano: 2004 |
URL: http://purl.umn.edu/10473 |
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| Singh, Inderjeet; Michaelowa, Axel. |
| Indian economic growth is likely to lead to a huge increase of energy use in buildings but so far, policies to address this issue are lacking. Standard building energy use concerning glazing, air conditioning and lighting in different climatic zones across India leads to energy use per m2 which is 3-4 times of the German average. We assess the potential to improve building energy efficiency and how measures in the building sector could be framed as projects under the Clean Development Mechanism. CDM case studies for large buildings in the Indian public and private sector are presented. They achieve annual greenhouse gas reductions of 500 to 10,000 ton, which may not be sufficient to overcome the CDM transaction cost barrier. Despite short payback periods,... |
| Tipo: Working or Discussion Paper |
Palavras-chave: CDM; Energy efficiency; India; Buildings; Resource /Energy Economics and Policy; Q540; Q560; Q410. |
| Ano: 2004 |
URL: http://purl.umn.edu/26323 |
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| Syed, Arif. |
| A report by the Prime Minister’s Task Group on Energy Efficiency (July 2010) emphasised the need for improved energy efficiency as a response to climate change to ensure a reduction in greenhouse gas emissions from energy consumption in Australia. However, empirical evidence on energy efficiency and its effect on energy use in Australia is scarce. Given this, estimates of the magnitude of the autonomous energy efficiency improvement parameter and the bias in technological change in Australia’s agricultural and industrial sectors have been made, using statistical and econometric techniques. The strong interaction prevailing between capital use and energy productivity in many industries indicates that energy use efficiency may be augmented by optimising... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Energy efficiency; Energy demand; Energy policy; Climate change.; Resource /Energy Economics and Policy. |
| Ano: 2011 |
URL: http://purl.umn.edu/100715 |
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| Gopinger,E; Krabbe,EL; Surek,D; Lopes,LS; Avila,VS. |
| ABSTRACT Broiler energy nutrition has attracted attention due to its economic importance, particularly during the rearing period of 22-42 days of age. There are many evidences that broilers changed their feed intake capacity due to genetic selection, especially when good quality pellets are fed, which suggests that modern broiler strains may achieve good performance when fed low metabolizable energy levels. The objective was to evaluate the energy efficiency, performance parameters, bone parameters, and carcass yield of 22- to 42-d-old broilers fed diets with energy levels below or above their requirements, while maintaining the density of all other nutrients. In total, 900 male broilers were distributed in a randomized block design, with five treatments... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bone; Carcass; Energy efficiency; Feed conversion ratio; Feed intake. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400559 |
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| Farias,Marcelo S. de; Schlosser,José F.; Linares,Pilar; Bertollo,Gilvan M.; Martini,Alfran T.. |
| ABSTRACT During the acquisition and use of an agricultural tractor, the consumption of fuel by the engine must be taken into account by the user, considering its nonrenewable origin and the marketing price. Appropriate strategies in driving tractors can help users to reduce production costs. In this context, the objective of this study was to evaluate the fuel consumption of an agricultural tractor using different driving strategies. Load levels were imposed, following the instructions from Organization for Economic Co-operation and Development Code 2, using an instrumented dynamometer car, in a concrete test track. Six load levels (30, 40, 50, 60, 70, and 80% of Q0) and three travel speeds (5.16, 7.29, and 10.48 km h-1) were applied for the strategies... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Concrete test track; Load levels; Energy efficiency. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000200144 |
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| Registros recuperados: 34 | |
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