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You searched for: Journal Applied energy Remove constraint Journal: Applied energy Publication year rev 7984-2016 Remove constraint Publication year rev: 7984-2016 Source 2016 v.164 Remove constraint Source: 2016 v.164
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1. A cascade pulse tube cooler capable of energy recovery

Author:
Longyi Wang; Mei Wu; Xiao Sun; Zhihua Gan
Source:
Applied energy 2016 v.164 pp. 572-578
ISSN:
0306-2619
Subject:
acoustics; cooling; energy recovery; temperature
Abstract:
... A pulse tube cryocooler (PTC) cannot work with Carnot efficiency due basically to the expansion work that has to be dissipated thermally at the warm end of the pulse tube, this dissipation is especially phenomenal with high cooling capacity or at high temperatures which reduces the COP and limits the application of PTC above 120K. Therefore, how to recover this amount of dissipated work becomes a ...
DOI:
10.1016/j.apenergy.2015.12.010

2. A comparative study of three model-based algorithms for estimating state-of-charge of lithium-ion batteries under a new combined dynamic loading profile

Author:
Fangfang Yang; Yinjiao Xing; Dong Wang; Kwok-Leung Tsui
Source:
Applied energy 2016 v.164 pp. 387-399
ISSN:
0306-2619
Subject:
algorithms; ambient temperature; batteries; management systems; uncertainty; vehicles (equipment)
Abstract:
... Accurate state-of-charge (SOC) estimation is critical for the safety and reliability of battery management systems in electric vehicles. Because SOC cannot be directly measured and SOC estimation is affected by many factors, such as ambient temperature, battery aging, and current rate, a robust SOC estimation approach is necessary to be developed so as to deal with time-varying and nonlinear batte ...
DOI:
10.1016/j.apenergy.2015.11.072

3. A comprehensive review of lithium-ion batteries used in hybrid and electric vehicles at cold temperatures

Author:
J. Jaguemont; L. Boulon; Y. Dubé
Source:
Applied energy 2016 v.164 pp. 99-114
ISSN:
0306-2619
Subject:
energy; specific energy; models; vehicles (equipment); batteries; temperature; cold; recycling
Abstract:
... Because of their numerous advantages, lithium-ion (Li-ion) batteries have recently become a focus of research interest for vehicle applications. Li-ion batteries are suitable for electric vehicles (EVs) and hybrid electric vehicles (HEVs) because of advantages such as their high specific energy, high energy density, and low self-discharge rate in comparison with other secondary batteries. Neverthe ...
DOI:
10.1016/j.apenergy.2015.11.034

4. A dynamic prognosis scheme for flexible operation of gas turbines

Author:
Elias Tsoutsanis; Nader Meskin; Mohieddine Benammar; Khashayar Khorasani
Source:
Applied energy 2016 v.164 pp. 686-701
ISSN:
0306-2619
Subject:
computer software; energy; models; power plants; prediction; probability distribution; prognosis; renewable energy sources; turbines
Abstract:
... The increase in energy demand has led to expansion of renewable energy sources and their integration into a more diverse energy mix. Consequently the operation of thermal power plants, which are spearheaded by the gas turbine technology, has been affected. Gas turbines are now required to operate more flexible in grid supporting modes that include part-load and transient operations. Therefore, con ...
DOI:
10.1016/j.apenergy.2015.11.104

5. A new approach for model validation in solar radiation using wavelet, phase and frequency coherence analysis

Author:
Sajid Hussain; Ali Al-Alili
Source:
Applied energy 2016 v.164 pp. 639-649
ISSN:
0306-2619
Subject:
filters; fuzzy logic; model validation; neural networks; solar radiation; wavelet
Abstract:
... The performance of solar radiation models is evaluated based on time domain statistical metrics. These metrics include root mean square error (RMSE), mean absolute percentage error (MAPE) and coefficient of determination (R2). However, this study adopts a new approach to model validation in phase and frequency domains. The study proposes frequency coherence and phase synchronization methods quanti ...
DOI:
10.1016/j.apenergy.2015.12.038

6. A new approach to modelling of a horizontal geo-heat exchanger with an internal source term

Author:
Sarwo Edhy Sofyan; Eric Hu; Andrei Kotousov
Source:
Applied energy 2016 v.164 pp. 963-971
ISSN:
0306-2619
Subject:
energy balance; heat exchangers; models; seasonal variation; soil density; soil temperature; specific heat; summer; winter
Abstract:
... This paper presents a new approach to considering the effect of seasonal changes in soil temperature on the performance of a horizontal geo heat exchanger. It is different from extant models which consider the seasonal changes in soil temperature by applying a real energy balance on the ground surface. In the new model, the seasonal changes in soil temperature, which are affected by the thermal in ...
DOI:
10.1016/j.apenergy.2015.07.034

7. A system-level fault detection and diagnosis method for low delta-T syndrome in the complex HVAC systems

Author:
Dian-ce Gao; Shengwei Wang; Kui Shan; Chengchu Yan
Source:
Applied energy 2016 v.164 pp. 1028-1038
ISSN:
0306-2619
Subject:
air conditioning; energy; health status; heat exchangers; models; uncertainty
Abstract:
... Low delta-T syndrome widely exists in the existing air-conditioning systems and results in increased energy consumption. This paper presents a system-level fault detection and diagnosis method (FDD) to detect and diagnose the low delta-T syndrome resulted from the performance degradation of AHUs system and plate heat exchanger system in a complex HVAC system. Performance indices are introduced to ...
DOI:
10.1016/j.apenergy.2015.02.025

8. Aircraft cost index and the future of carbon emissions from air travel

Author:
Holly A. Edwards; Darron Dixon-Hardy; Zia Wadud
Source:
Applied energy 2016 v.164 pp. 553-562
ISSN:
0306-2619
Subject:
air transportation; aircraft; biofuels; carbon; carbon dioxide; carbon markets; climate change; energy costs; energy use and consumption; equations; flight; greenhouse gas emissions; industry; issues and policy; models; oils
Abstract:
... Air travel accounts for 2% of global CO2 emissions and this proportion is set to grow in the future. There are currently no large scale solutions to drastically reduce the industry’s dependence on oil. Therefore, airlines are looking to use a basket of measures to reduce fuel consumption. Optimisation of the use of cost index (CI) could be a valuable addition to this. By balancing time-dependent c ...
DOI:
10.1016/j.apenergy.2015.11.058

9. An IoT-based energy-management platform for industrial facilities

Author:
Min Wei; Seung Ho Hong; Musharraf Alam
Source:
Applied energy 2016 v.164 pp. 607-619
ISSN:
0306-2619
Subject:
consumers (people); energy; energy costs; management systems; models
Abstract:
... Interconnectivity and interoperability are very important features in the development of integrated energy management systems for industrial facilities. A simple and common strategy for exchanging energy-related information among the entities in a facility is currently lacking. To this end, the purpose of this study is to present an IoT-based communication framework with a common information model ...
DOI:
10.1016/j.apenergy.2015.11.107

10. An economic comparison of battery energy storage to conventional energy efficiency technologies in Colorado manufacturing facilities

Author:
Kalen Nataf; Thomas H. Bradley
Source:
Applied energy 2016 v.164 pp. 133-139
ISSN:
0306-2619
Subject:
batteries; consumers (people); cost effectiveness; data collection; economic valuation; energy conservation; energy efficiency; manufacturing; Colorado
Abstract:
... Battery energy storage (BES) is one of a set of technologies that can be considered to reduce electrical loads, and to realize economic value for industrial customers. To directly compare the energy savings and economic effectiveness of BES to more conventional energy efficiency technologies, this study collected detailed information regarding the electrical loads associated with four Colorado man ...
DOI:
10.1016/j.apenergy.2015.11.102

11. An efficient pulse tube cryocooler for boil-off gas reliquefaction in liquid natural gas tanks

Author:
J.Y. Hu; S. Chen; J. Zhu; L.M. Zhang; E.C. Luo; W. Dai; H.B. Li
Source:
Applied energy 2016 v.164 pp. 1012-1018
ISSN:
0306-2619
Subject:
cooling; electric power; energy conservation; heat exchangers; heat transfer; natural gas; tanks
Abstract:
... Small liquid natural gas (LNG) distribution stations require compact, highly efficient cryocoolers to reliquefy boil-off gas in the LNG tank. This paper describes a pulse tube cryocooler measuring 420mm×690mm×780mm and weighing 180kg. With low input electric power, the relative Carnot efficiency exceeded 20%. Increasing the power to 10kW, the cryocooler produced approximately 1.2kW of cooling at 1 ...
DOI:
10.1016/j.apenergy.2015.03.096

12. An empirical–heuristic optimization of the building-roof geometry for urban wind energy exploitation on high-rise buildings

Author:
Francisco Toja-Silva; Oscar Lopez-Garcia; Carlos Peralta; Jorge Navarro; Ignacio Cruz
Source:
Applied energy 2016 v.164 pp. 769-794
ISSN:
0306-2619
Subject:
aerodynamics; buildings; cities; energy; geometry; turbulent flow; urban areas; wind; wind power; wind turbines
Abstract:
... Urban wind energy exploitation is an important topic for smart sustainable cities. The present investigation is a step in this direction, considering the latest advances in building aerodynamics, identifying and analyzing the optimum building-roof shape for the urban wind energy exploitation. This investigation focusses in two aspects: the isolated building shape optimization and the analysis of t ...
DOI:
10.1016/j.apenergy.2015.11.095

13. An experimental study on even frosting performance of an air source heat pump unit with a multi-circuit outdoor coil

Author:
Mengjie Song; Liang Xia; Ning Mao; Shiming Deng
Source:
Applied energy 2016 v.164 pp. 36-44
ISSN:
0306-2619
Subject:
air; dewpoint; freezing point; frost; heat pumps; heat transfer; surface temperature
Abstract:
... When the surface temperature of the outdoor coil in an air source heat pump (ASHP) unit is lower than both the air dew point and freezing point of water, frost can be formed and accumulated over outdoor coil’s surface. On the other hand, an outdoor coil normally has multiple parallel circuits on its refrigerant side for minimized refrigerant pressure loss and enhanced heat transfer efficiency. Cur ...
DOI:
10.1016/j.apenergy.2015.11.036

14. An experimental study on the effects of temperature and pressure on negative corona discharge in high-temperature ESPs

Author:
Pei Yan; Chenghang Zheng; Weizhuo Zhu; Xi Xu; Xiang Gao; Zhongyang Luo; Mingjiang Ni; Kefa Cen
Source:
Applied energy 2016 v.164 pp. 28-35
ISSN:
0306-2619
Subject:
air; ambient temperature; atmospheric pressure; carbon dioxide; combustion; electric power; electrodes; energy efficiency; fluidized beds; gasification; ionization; sulfur dioxide
Abstract:
... High-temperature ESPs are proposed to improve energy efficiency and avoid damage to downstream equipment in integrated gasification combined cycle and pressurized fluidized-bed combustion. In this study, the effects of temperature and pressure on negative corona discharge characteristics were compared. Gas temperature varied from 373K to 1073K, and pressure varied from 30kPa to 100kPa to achieve t ...
DOI:
10.1016/j.apenergy.2015.11.040

15. An improved plant-wide multiperiod optimization model of a byproduct gas supply system in the iron and steel-making process

Author:
Valter B. de Oliveira Junior; João G. Coelho Pena; José L. Félix Salles
Source:
Applied energy 2016 v.164 pp. 462-474
ISSN:
0306-2619
Subject:
byproducts; case studies; electricity; energy; fuels; iron; linear programming; models; power plants; steam; steel
Abstract:
... In an integrated steel mill, the byproduct gases of steel production processes can be recovered as fuel for the plant itself and can be used to generate electricity and steam in power plants. This work addresses the development of a mixed integer linear programming (MILP) model to solve the problem of byproduct fuel distribution, with the goal of maximizing energy utilization. Improvements are mad ...
DOI:
10.1016/j.apenergy.2015.11.043

16. Biodiesel from transesterification at low temperature by AlCl3 catalysis in ethanol and carbon dioxide as cosolvent: Process, mechanism and application

Author:
Qingqing Guan; Hua Shang; Jing Liu; Junjie Gu; Bin Li; Rongrong Miao; Qiuling Chen; Ping Ning
Source:
Applied energy 2016 v.164 pp. 380-386
ISSN:
0306-2619
Subject:
Lewis acids; aluminum chloride; biodiesel; carbon; carbon dioxide; catalysts; catalytic activity; cooking fats and oils; esterification; ethanol; free fatty acids; glycerol; harvesting; hydrogen bonding; microalgae; oxygen; temperature; transesterification; triacylglycerols
Abstract:
... Finding a more efficient method for the transesterification of triglycerides to biodiesel fuel (BD) is important in today’s world. In this study, transesterification of trilaurin was carried out in a solution containing 4wt% of the Lewis acid AlCl3 dissolved in a cosolvent of ethanol and 5MPa CO2. A conversion rate of over 90% was achieved within 1h at the low temperature of 180°C. The process ind ...
DOI:
10.1016/j.apenergy.2015.11.029

17. Biomass transport cost from field to conversion facility when biomass yield density and road network vary with transport radius

Author:
Rajdeep Golecha; Jianbang Gan
Source:
Applied energy 2016 v.164 pp. 321-331
ISSN:
0306-2619
Subject:
biofuels; biomass production; biorefining; fuel production; models; production costs
Abstract:
... Biomass transport cost from field to a conversion facility is a major component of biofuel production cost. Several studies have provided a general framework, independent of location, for maximising cost competitiveness of bioenergy plants. The majority of these studies assume uniform spatial distribution of biomass and road network, independent of the size of the biorefinery. Although this assump ...
DOI:
10.1016/j.apenergy.2015.11.070

18. CFD analysis of melting process in a shell-and-tube latent heat storage for concentrated solar power plants

Author:
F. Fornarelli; S.M. Camporeale; B. Fortunato; M. Torresi; P. Oresta; L. Magliocchetti; A. Miliozzi; G. Santo
Source:
Applied energy 2016 v.164 pp. 711-722
ISSN:
0306-2619
Subject:
equations; geometry; gravity; heat transfer; melting; power plants; solar energy; steel; temperature profiles
Abstract:
... A latent heat storage system for concentrated solar plants (CSP) is numerically examined by means of CFD simulations. This study aims at identifying the convective flows produced within the melted phase by temperature gradients and gravity. Simulations were carried out on experimental devices for applications to high temperature concentrated solar power plants. A shell-and-tube geometry composed b ...
DOI:
10.1016/j.apenergy.2015.11.106

19. CIGS absorber preparation by non-vacuum particle-based screen printing and RTA densification

Author:
Hsiu-Po Kuo; Hung-An Tsai; An-Ni Huang; Wen-Chueh Pan
Source:
Applied energy 2016 v.164 pp. 1003-1011
ISSN:
0306-2619
Subject:
annealing; carbon; solvents; temperature
Abstract:
... CuIn0.7Ga0.3Se2 (CIGS) thin-films are prepared by the particle-based screen printing technique followed by rapid thermal annealing (RTA) densification. Due to the short RTA time, CIGS absorber remains the ideal stoichiometric ratio originated from the CIGS particles in the coating paste and thus the conventional selenization process is not required. The effects of the particle concentrations of th ...
DOI:
10.1016/j.apenergy.2015.04.002

20. Combining multi-objective evolutionary algorithms and descriptive analytical modelling in energy scenario design

Author:
Md Shahriar Mahbub; Marco Cozzini; Poul Alberg Østergaard; Fabrizio Alberti
Source:
Applied energy 2016 v.164 pp. 140-151
ISSN:
0306-2619
Subject:
algorithms; carbon; energy; energy use and consumption; fossil fuels; mixing; models; renewable energy sources; sustainable technology; Denmark
Abstract:
... Environmental and security concerns urge energy planners to design more sustainable energy systems, reducing fossil fuel consumptions in favour of renewable solutions. The proposed scenarios typically rely on a mixing of different energy sources, thereby mitigating the availability and intermittency problems typically related to renewable technologies. Optimizing this combination is of crucial imp ...
DOI:
10.1016/j.apenergy.2015.11.042