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1. Biosynthesis of fatty acid-derived hydrocarbons: perspectives on enzymology and enzyme engineering

Author:
Liu, Kun; Li, Shengying
Source:
Current opinion in biotechnology 2020 v.62 pp. 7-14
ISSN:
0958-1669
Subject:
energy use and consumption,   etc   ; biofuels; biosynthesis; engineering; enzymes; enzymology; hydrocarbons; petroleum;     Show all 8 Subjects
Abstract:
... Enormous fuel consumption and growing environmental concerns have been spurring development of renewable biofuels. Among various biofuels, fatty acid-derived biohydrocarbons are ideal alternatives to non-renewable fossil fuels due to their closest properties to petroleum-based fuels. In the past decade, novel hydrocarbon-producing enzymes have continuously been discovered and engineered. Here, we ...
DOI:
10.1016/j.copbio.2019.07.005

2. Embedded BIPV module-level DC/DC converters: Classification of optimal ratings

Author:
Ravyts, Simon; Vecchia, Mauricio Dalla; Van den Broeck, Giel; Yordanov, Georgi H.; Gonçalves, Juliana Emanuella; Moschner, Jens D.; Saelens, Dirk; Driesen, Johan
Source:
Renewable energy 2020 v.146 pp. 880-889
ISSN:
0960-1481
Subject:
energy use and consumption,   etc   ; buildings; climate; energy; environmental impact; prototypes; shade; solar energy; Belgium;     Show all 9 Subjects
Abstract:
... Building-integrated photovoltaics (BIPV) is seen as a key technology to reduce the environmental impact and net power consumption of buildings. The integration of PV into building components, such as façade, window, roof or shading elements, leads to a distributed generation over the building envelope with a profound impact on the electrical installation. Designing the electrical system with strin ...
DOI:
10.1016/j.renene.2019.07.018

3. Effects of saturated soil on the lengths of a double U-tube borehole with two independent circuits, a parallel double U-tube borehole and on the power consumption of a GSHP

Author:
Kimiaei, S.; Salmanzadeh, M.
Source:
Renewable energy 2020 v.145 pp. 202-214
ISSN:
0960-1481
Subject:
energy use and consumption,   etc   ; freezing; heat; heat pumps; soil; thawing; thermal conductivity; winter;     Show all 8 Subjects
Abstract:
... Ground in winter as a heat source can increase the coefficient of performance of the heat pump. However, cost of digging the ground is high. Thermal properties of the soil affect the length of boreholes. The saturated soil of Kerman has a unique potential for establishment of geothermal boreholes. In this paper, the effects of Kerman's saturated soil with freezing and thawing, on lengths of a doub ...
DOI:
10.1016/j.renene.2019.04.152

4. Coordination of vehicle-to-home and renewable capacity resources for energy management in resilience and self-healing building

Author:
Mehrjerdi, Hasan; Hemmati, Reza
Source:
Renewable energy 2020 v.146 pp. 568-579
ISSN:
0960-1481
Subject:
energy use and consumption,   etc   ; buildings; computer software; energy; energy costs; generators (equipment); management systems; models; operating costs; prices; seasonal variation; uncertainty; wind power; wind turbines;     Show all 14 Subjects
Abstract:
... The home energy management is an efficient tool to manage energy in the buildings that organizes different technologies and mathematical techniques to minimize energy cost. Home energy management often utilizes renewable energy resources to supply load demand in the building. Current home energy management systems utilize one or several of the available hardware-software capacity resources to deal ...
DOI:
10.1016/j.renene.2019.07.004

5. Regulated emission characteristics of in-use LNG and diesel semi-trailer towing vehicles under real driving conditions using PEMS

Author:
Lv, Liqun; Ge, Yunshan; Ji, Zhe; Tan, Jianwei; Wang, Xin; Hao, Lijun; Wang, Zhiwei; Zhang, Mengzhu; Wang, Chunjie; Liu, Haidan
Source:
Journal of environmental sciences (China) 2020 v.88 pp. 155-164
ISSN:
1001-0742
Subject:
energy use and consumption,   etc   ; catalytic activity; emissions factor; filters; greenhouse gas emissions; liquefied natural gas; methane; methane production; nitrogen oxides; temperature; China;     Show all 11 Subjects
Abstract:
... On-road driving emissions of six liquefied natural gas (LNG) and diesel semi-trailer towing vehicles (STTVs) which met China Emission Standard IV and V were tested using Portable Emission Measurement System (PEMS) in northern China. Emission characteristics of these vehicles under real driving conditions were analyzed and proved that on-road emissions of heavy-duty vehicles (HDVs) were underestima ...
DOI:
10.1016/j.jes.2019.07.020

6. An investigation on the influence of aluminium oxide nano-additive and honge oil methyl ester on engine performance, combustion and emission characteristics

Author:
Soudagar, Manzoore Elahi M.; Nik-Ghazali, Nik-Nazri; Kalam, M.A.; Badruddin, Irfan Anjum; Banapurmath, N.R.; Bin Ali, Mohamad Azlin; Kamangar, Sarfaraz; Cho, Haeng Muk; Akram, Naveed
Source:
Renewable energy 2020 v.146 pp. 2291-2307
ISSN:
0960-1481
Subject:
energy use and consumption,   etc   ; absorbance; additives; aluminum oxide; anionic surfactants; biodiesel; carbon monoxide; combustion; diesel fuel; heat; hydrocarbons; nanoparticles; nitrogen oxides; oils; smoke; sodium dodecyl sulfate; ultrasonic treatment; ultraviolet-visible spectroscopy;     Show all 18 Subjects
Abstract:
... The potential use of aluminium oxide nanoparticles as nanofuel additives was investigated on honge oil methyl ester and diesel fuel blend. The nanofuel blends were prepared by dispersing aluminium oxide in varying quantities in a HOME(B20) (20% biodiesel+80% diesel). Sodium dodecyl sulfate (SDS), an anionic surfactant, was used for a stable dispersion of aluminium oxide nanoparticles in the fuel b ...
DOI:
10.1016/j.renene.2019.08.025

7. Annual performance experiments of an earth-air heat exchanger fresh air-handling unit in severe cold regions: Operation, economic and greenhouse gas emission analyses

Author:
Li, Hui; Ni, Long; Yao, Yang; Sun, Cheng
Source:
Renewable energy 2020 v.146 pp. 25-37
ISSN:
0960-1481
Subject:
energy use and consumption,   etc   ; air; air temperature; cooling; greenhouse gas emissions; heat exchangers; heat pumps; heat recovery; land use; mass transfer; pipes; primary energy; renewable energy sources; water content;     Show all 14 Subjects
Abstract:
... This paper proposes a fresh air-handling unit, comprising an earth-air heat exchanger (EAHE) and a heat recovery unit, to solve the problem of insufficient fresh air and save primary energy use in severe cold regions. A new construction of double-layer buried pipes was adopted to enhance heat transfer and save land use. Annual performance of system from January to December 2017 was evaluated by an ...
DOI:
10.1016/j.renene.2019.06.058

8. CFD simulation of biomass thermal conversion under air/oxy-fuel conditions in a reciprocating grate boiler

Author:
Karim, Md Rezwanul; Bhuiyan, Arafat Ahmed; Sarhan, Abd Alhamid Rafea; Naser, Jamal
Source:
Renewable energy 2020 v.146 pp. 1416-1428
ISSN:
0960-1481
Subject:
energy use and consumption,   etc   ; air; biofuels; biomass; burning; carbon dioxide; drying; flue gas; fuel bed; fuel combustion; furnaces; heat; mass flow; mass transfer; models; oxidants; oxygen; prediction; temperature profiles;     Show all 19 Subjects
Abstract:
... A comprehensive 3D CFD model has been developed for analyzing thermal conversion of woody biomass fuel in a large reciprocating grate boiler under air/oxy-fuel condition. A number of sub-models representing solid conversion processes such as drying, devolatilisation and char combustion, gas phase flow and chemical reactions, solid and gas phase interaction through heat and mass transfer and bed mo ...
DOI:
10.1016/j.renene.2019.07.068

9. Enzymatic production of biodiesel using lipase catalyst and testing of an unmodified compression ignition engine using its blends with diesel

Author:
Jayaraman, Jayaprabakar; Alagu, Karthikeyan; Appavu, Prabhu; Joy, Nivin; Jayaram, Parthipan; Mariadoss, Anish
Source:
Renewable energy 2020 v.145 pp. 399-407
ISSN:
0960-1481
Subject:
energy use and consumption,   etc   ; alternative fuels; biodiesel; carbon monoxide; catalysts; cooking fats and oils; diesel engines; emissions; energy costs; fossil fuels; fuel production; hydrocarbons; kitchen waste; methanol; nitrogen oxides; transesterification; triacylglycerol lipase;     Show all 17 Subjects
Abstract:
... The exploration for alternative fuels was prompted by increasing environmental concerns, rising conventional fuel prices and fossil fuel depletion. The improved potential of waste cooking oil makes it desirable for its utilization for biodiesel production. In the present study, enzymatic transesterification of waste cooking oil (WCO) is done using lipase enzyme to produce waste cooking oil methyl ...
DOI:
10.1016/j.renene.2019.06.061

10. Residential load forecasting using wavelet and collaborative representation transforms

Author:
Imani, Maryam; Ghassemian, Hassan
Source:
Applied energy 2019 v.253 pp. 113505
ISSN:
0306-2619
Subject:
energy use and consumption,   etc   ; neural networks; wavelet;     Show all 3 Subjects
Abstract:
... Short-term household-level load forecasting requires to acquire knowledge about lifestyle and consumption patterns of residents. A new forecasting framework is proposed in this work which uses the extra appliance measurements in meter-level for short-term electrical load forecasting. The long short-term memory network as a deep learning method is used as a predictor where useful features are fed t ...
DOI:
10.1016/j.apenergy.2019.113505

11. Modeling and control of flexible loads for frequency regulation services considering compensation of communication latency and detection error

Author:
Hui, Hongxun; Ding, Yi; Song, Yonghua; Rahman, Saifur
Source:
Applied energy 2019 v.250 pp. 161-174
ISSN:
0306-2619
Subject:
energy use and consumption,   etc   ; electrical equipment; models;     Show all 3 Subjects
Abstract:
... Demand response has been widely utilized to provide frequency regulation service for the power systems by adjusting the power consumption of flexible loads. The frequency regulation service is time-sensitive and generally realized by direct load control, due to the quick response requirement (generally a few seconds). Most of the existing studies assume that the control on flexible loads can be im ...
DOI:
10.1016/j.apenergy.2019.04.191

12. Optimization of compound power split configurations in PHEV bus for fuel consumption and battery degradation decreasing

Author:
Zhang, Feitie; Yang, Fuyuan; Xue, Dianlun; Cai, Yuanchun
Source:
Energy 2019 v.169 pp. 937-957
ISSN:
0360-5442
Subject:
energy use and consumption,   etc   ; batteries; models;     Show all 3 Subjects
Abstract:
... Compound power-split configurations exhibit better fuel consumption than input and output power-split configurations. However, there is a need to understand how to design the best compound power-split configuration. In this paper, potential compound power-split configurations with two planetary gear sets are explored. Based on the planetary connection, there are 18 possible compound power-split co ...
DOI:
10.1016/j.energy.2018.12.059

13. Fuel saving strategy using real-time switching of the fueling regulators in the proton exchange membrane fuel cell system

Author:
Bizon, Nicu
Source:
Applied energy 2019 v.252 pp. 113449
ISSN:
0306-2619
Subject:
energy use and consumption,   etc   ; batteries; fuel cells; fuels; mixing;     Show all 5 Subjects
Abstract:
... A new strategy based on a real-time switching of the fueling regulators’ inputs is proposed in this paper to achieve better fuel saving for the fuel cell systems. The performance of the proposed strategy is compared with two basic strategies that operate in full loading range. In fact, by splitting the operating range in two ranges, where each basic strategy operates best, the proposed strategy mi ...
DOI:
10.1016/j.apenergy.2019.113449

14. Experimental validation of tyre inflation pressure model to reduce fuel consumption during soil tillage

Author:
Čiplienė, Aušra; Gurevičius, Povilas; Janulevičius, Algirdas; Damanauskas, Vidas
Source:
Biosystems engineering 2019 v.186 pp. 45-59
ISSN:
1537-5110
Subject:
energy use and consumption,   etc   ; lead; models; tillage; tires; tractors; wheels;     Show all 7 Subjects
Abstract:
... The slip of modern tractors can be adjusted by several measures, including using draft force and implement position control systems, additional ballast, low aspect ratio tyres, increased or very high flexion tyres and adjusting the inflation pressure of tyres. Any of these measures, or their combinations, unavoidably results in changes in tractor tyre deflection of the front and rear tyres which a ...
DOI:
10.1016/j.biosystemseng.2019.06.023

15. Study on dynamic characteristics of intake system and combustion of controllable intake swirl diesel engine

Author:
Wang, Guixin; Yu, Wenbin; Li, Xiaobo; Su, Yanpan; Yang, Rui; Wu, Wentao
Source:
Energy 2019 v.180 pp. 1008-1018
ISSN:
0360-5442
Subject:
energy use and consumption,   etc   ; combustion; diesel engines; fluid mechanics;     Show all 4 Subjects
Abstract:
... This paper investigated the intake flow field of a controllable intake swirl diesel engine using computational fluid dynamics (CFD) methodology. It can be observed that the variation of the intake swirl with the opening of the intake baffle shows the two-stage characteristics, while the baffle opening angle of 48° is as a cut-off point. Through the comprehensive analysis of the influence of valve ...
DOI:
10.1016/j.energy.2019.05.162

16. Numerical study on particle mixing in a double-screw conical mixer

Author:
Cai, Ruihuan; Hou, Zhichao; Zhao, Yongzhi
Source:
Powder technology 2019 v.352 pp. 193-208
ISSN:
0032-5910
Subject:
energy use and consumption,   etc   ; industry; mixing; particle size; powders;     Show all 5 Subjects
Abstract:
... The double-screw conical mixer, as a mixing device, has been widely used in lots of industries for its high mixing rate and quality. However, a deeper understanding as well as a large-scale simulation on particle mixing in this kind of mixer is still lacking. In this paper, discrete element method (DEM) is utilized to investigate the flow pattern of particles and the mixing performance of the doub ...
DOI:
10.1016/j.powtec.2019.04.065

17. Analysis and runners length optimization of the intake manifold of a 4-cylinder spark ignition engine

Author:
Silva, E.A.A.; Ochoa, A.A.V.; Henríquez, J.R.
Source:
Energy conversion and management 2019 v.188 pp. 310-320
ISSN:
0196-8904
Subject:
energy use and consumption,   etc   ; geometry; spark ignition engines; torque;     Show all 4 Subjects
Abstract:
... This study conducts an optimization analysis of the geometry of an intake manifold of an internal combustion engine by using a numerical approach based on the 1D GT-POWER simulation platform. The optimization process was modeled using the Brent method, during which calculations are made of the lengths of the intake manifold runners that provide the engine’s greatest volumetric efficiency at each s ...
DOI:
10.1016/j.enconman.2019.03.065

18. Developing a Model to Predict the Start of Combustion in HCCI Engine Using ANN-GA Approach

Author:
Taghavi, M.; Gharehghani, A.; Nejad, F. Bakhtiari; Mirsalim, M.
Source:
Energy conversion and management 2019
ISSN:
0196-8904
Subject:
energy use and consumption,   etc   ; algorithms; combustion; neural networks; pollution; prediction;     Show all 6 Subjects
Abstract:
... The combustion process in Homogeneous Charge Compression Ignition Engines (HCCI) is one of the new methods of futuristic combustion technologies. Since there is no direct operator for the start of the combustion (SOC) of these engines, air-fuel mixture properties at the moment of entering the combustion chamber, specifies the ignition timing. In HCCI engines, the ignition timing is the most crucia ...
DOI:
10.1016/j.enconman.2019.05.015

19. Self-excited pneumatic conveying through vertical curved 90° bends

Author:
Dong, Lin; Rinoshika, Akira
Source:
Powder technology 2019 v.346 pp. 291-300
ISSN:
0032-5910
Subject:
energy use and consumption,   etc   ; air; energy; mass flow; polyethylene; powders;     Show all 6 Subjects
Abstract:
... The effect of self-excited soft fins on a pneumatic conveying with different vertical curved 90° bends was experimentally studied to reduce pressure drop, power consumption and conveying air velocity. The distributions of particle velocity and particle fluctuating velocity near and in the first bend were measured based on the high-speed PIV. The polyethylene particles with a diameter of 2.3 mm wer ...
DOI:
10.1016/j.powtec.2019.02.018

20. Erratum to: Studies of Energy Use Efficiency on Fruit Production

Author:
Gökdoğan, Osman; Erdoğan, Oktay; Oğuz, Halil Ibrahim; Baran, Mehmet Fırat
Source:
Erwerbsobstbau 2019 v.61 no.1 pp. 53-54
ISSN:
0014-0309
Subject:
energy use and consumption,   etc   ; energy; fruit growing; fruits; research;     Show all 5 Subjects
Abstract:
... Erratum to: Erwerbs-Obstbau 2018 https://doi.org/10.1007/s10341-018-0392-8 Unfortunately, Tables 1 and 2 of this article contain errors. ...
DOI:
10.1007/s10341-018-0397-3