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Optimal Su-Do-Ku based interconnection scheme for increased power output from PV array under partial shading conditions

P. SRINIVASA RAO,P. DINESH,G. SARAVANA ILANGO,C. NAGAMANI

Frontiers in Energy 2015, Volume 9, Issue 2,   Pages 199-210 doi: 10.1007/s11708-015-0350-1

Abstract: They drastically reduce the power output because of mismatch losses, which are reliant on the shape ofarrangement increases the length of the wire required to interconnect the panels thus increasing the linelosses.

Keywords： array configuration     mismatch losses     partial shading     line losses     Su-Do-Ku arrangement    

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Development of an analytical model to estimate the churning losses in high-speed axial piston pumps

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-021-0671-1

Abstract: rotating parts are fully immersed in the casing oil during operation, leading to considerable churning losses(more than 10% of total power losses) at high rotational speeds.The churning losses deserve much attention at the design stage of high-speed axial piston pumps, butaccurate analytical models are not available to estimate the drag torque associated with the churning lossesThe presented analytical model provides practical guidelines for reducing the churning losses in high-speed

Keywords： axial piston pump     rotating parts     high rotational speed     churning losses     drag torque    

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NUTRIENT USE EFFICIENCY AND LOSSES OF INDUSTRIAL FARMS AND MIXED SMALLHOLDINGS: LESSONS FROM THE NORTH

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 1,

Abstract: Here, we aimed to quantify nutrient flows, nutrient use efficiency, and nutrient losses in differentTo produce 1 kg N and P in animal products, nutrient losses in industrial pig farms (2.0 kg N and 1.3kg P) were lower than in mixed pig smallholdings, nutrient losses in industrial dairy farms (2.7 kgLiquid manure discharge in industrial farms was the main losses pathway in contrast to mixed smallholdings
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HOTSPOTS OF NUTRIENT LOSSES TO AIR AND WATER: AN INTEGRATED MODELING APPROACH FOR EUROPEAN RIVER BASINS

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 4,   Pages 579-592 doi: 10.15302/J-FASE-2023526

Abstract:

Nutrient pollution of air and water is a persistent problem in Europe. However, the pollution sources are often analyzed separately, preventing the formulation of integrative solutions. This study aimed to quantify the contribution of agriculture to air, river and coastal water pollution by nutrients. A new MARINA-Nutrients model was developed for Europe to calculate inputs of nitrogen (N) and phosphorus (P) to land and rivers, N emissions to air, and nutrient export to seas by river basins. Under current practice, inputs of N and P to land were 34.4 and 1.8 Tg·yr–1, respectively. However, only 12% of N and 3% of P reached the rivers. Agriculture was responsible for 55% of N and sewage for 67% of P in rivers. Reactive N emissions to air from agriculture were calculated at 4.0 Tg·yr–1. Almost two-fifths of N emissions to air were from animal housing and storage. Nearly a third of the basin area was considered as pollution hotspots and generated over half of N emissions to air and nutrient pollution in rivers. Over 25% of river export of N ended up in the Atlantic Ocean and of P in the Mediterranean Sea. These results could support environmental policies to reduce both air and water pollution simultaneously, and avoid pollution swapping.

Keywords： agriculture     air-water modeling     European rivers     nutrient pollution     sewage systems     source attribution    

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GASEOUS REACTIVE NITROGEN LOSSES FROM ORCHARDS, VEGETABLES AND TEA PLANTATIONS

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 2,   Pages 155-166 doi: 10.15302/J-FASE-2022477

Abstract:

● Gaseous N emissions from orchards, vegetables and tea plantations (OVT) are reviewed.

Keywords： fruit     greenhouse gas     green development     fertilizer management     climate change    

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Exergy losses in premixed flames of dimethyl ether and hydrogen blends

Tongbin ZHAO, Jiabo ZHANG, Dehao JU, Zhen HUANG, Dong HAN

Frontiers in Energy 2019, Volume 13, Issue 4,   Pages 658-666 doi: 10.1007/s11708-019-0645-8

Abstract: The exergy losses from the irreversibility sources, i.e., chemical reaction, heat conduction and speciesIt is observed that, regardless of the fuel blends, chemical reaction contributes most to the exergy lossesThe results also indicate that increased H substitution decreases the exergy losses from reactions,The decreases in exergy losses by chemical reactions and heat conduction are higher, but the exergy lossThe overall exergy losses in the DME/H flames decrease by about 5% with increased H substitution from

Keywords： second law analysis     flame     dimethyl ether (DME)     hydrogen     binary fuels    

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Test investigation on hydraulic losses in the discharge passage of an axial-flow pump

QIU Baoyun, CAO Haihong, JIANG Wei, GAO Zhaohui, WANG Fei

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1,   Pages 50-56 doi: 10.1007/s11465-007-0008-8

Abstract: passage, the discharge in the left channel is bigger than that in the right, and the passage hydraulic lossesThe methods deducing the hydraulic losses are investigated.The results indicate that the passage hydraulic losses are not proportional to the flow discharge.Compared with a circular pipe, the hydraulic losses of a divergent discharge passage are smaller andare also big, but a small circulation can slightly reduce hydraulic losses.
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Development and testing of a weather-based model to determine potential yield losses caused by potato

Alexey FILIPPOV, Maria KUZNETSOVA, Alexander ROGOZHIN, Olga IAKUSHEVA, Valentina DEMIDOVA, Natalia STATSYUK

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 4,   Pages 462-468 doi: 10.15302/J-FASE-2018239

Abstract: To minimize yield losses, various protective measures are used including fungicide application.development in an experimental potato field recorded over 30 seasons, a simulator to forecast yield lossesThe average difference between the calculated and real yield losses did not exceed 5%.Using the simulator and weather data for a period of 2007-2017, yield losses were calculated for several

Keywords： potato     late blight     Phytophthora infestans     yield losses     retrospective analysis     mathematical model    

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CLIMATE-CHANGE-INDUCED TEMPORAL VARIATION IN PRECIPITATION INCREASES NITROGEN LOSSES FROM INTENSIVE CROPPING

Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 3,   Pages 457-464 doi: 10.15302/J-FASE-2022452

Abstract: to evaluate how increasing temporal variability in precipitation influences crop yields and nitrogen losses

Keywords： crop yield     fertilizer timing     nitrogen loss     precipitation variability     toy model    

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Acoustic fault signal extraction via the line-defect phononic crystals

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 1,   Pages 10-10 doi: 10.1007/s11465-021-0666-y

Abstract: In this paper, 2D line-defect phononic crystals (PCs) consisting of periodic acrylic tubes with slitThe defect band, namely, the formed resonance band of line-defect PCs enables the incident acoustic waveThe effectiveness of weak harmonic and periodic impulse signal detection via line-defect PCs are investigatedAll the numerical and experimental results indicate that line-defect PCs can be well used for extracting

Keywords： phononic crystals     line-defect     fault signal extraction     acoustic enhancement    

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Numerical study of conduction and radiation heat losses from vacuum annulus in parabolic trough receivers

Dongqiang LEI, Yucong REN, Zhifeng WANG

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 1048-1059 doi: 10.1007/s11708-020-0670-7

Abstract: In this paper, conduction and radiation heat losses are analyzed respectively to identify the heat lossspecies, temperature of heat transfer fluid, and annulus size on the conduction and radiation heat losses

Keywords： parabolic trough receiver     vacuum annulus     rarefied gas     DSMC (direct simulation Monte Carlo)     heat loss    

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Calculations of narrow-band transimissities and the Planck mean absorption coefficients of real gases using line-by-line

Huaqiang CHU, Mingyan GU, Huaichun ZHOU, Fengshan LIU

Frontiers in Energy 2014, Volume 8, Issue 1,   Pages 41-48 doi: 10.1007/s11708-013-0292-4

Abstract: the band parameters of Soufiani and Taine, the more recent parameters of André and Vaillon, and the line-by-line

Keywords： transimissity     HITEMP     HITRAN     Planck mean absorption coefficients    

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NUTRIENT USE EFFICIENCY AND LOSSES OF INDUSTRIAL FARMS AND MIXED SMALLHOLDINGS: LESSONS FROM THE NORTH

Yifei MA, Ling ZHANG, Zhaohai BAI, Rongfeng JIANG, Yong HOU, Lin MA

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 1,   Pages 58-71 doi: 10.15302/J-FASE-2020371

Abstract: Here, we aimed to quantify nutrient flows, nutrient use efficiency, and nutrient losses in differentTo produce 1 kg N and P in animal products, nutrient losses in industrial pig farms (2.0 kg N and 1.3kg P) were lower than in mixed pig smallholdings, nutrient losses in industrial dairy farms (2.7 kgLiquid manure discharge in industrial farms was the main losses pathway in contrast to mixed smallholdings

Keywords： industrial farms     mixed smallholdings     pig     dairy     nutrient management    

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Pareto lexicographic α-robust approach and its application in robust multi objective assembly line balancing

Ullah SAIF,Zailin GUAN,Baoxi WANG,Jahanzeb MIRZA

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 3,   Pages 257-264 doi: 10.1007/s11465-014-0294-x

Abstract: application of the proposed method on a simple problem of multi objective optimization of simple assembly line

Keywords： Pareto     lexicographic α-robust     assembly line balancing    

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Choosing configurations of transmission line tower grounding by back flashover probability value

Dmitry KUKLIN

Frontiers in Energy 2016, Volume 10, Issue 2,   Pages 213-226 doi: 10.1007/s11708-016-0398-6

Abstract: However, in application to grounding of transmission line towers they are not enough to determine what

Keywords： grounding     transmission line tower     back flashover probability     FDTD method    

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Title Author Date Type Operation

Optimal Su-Do-Ku based interconnection scheme for increased power output from PV array under partial shading conditions

P. SRINIVASA RAO,P. DINESH,G. SARAVANA ILANGO,C. NAGAMANI

Journal Article

Development of an analytical model to estimate the churning losses in high-speed axial piston pumps

Journal Article

NUTRIENT USE EFFICIENCY AND LOSSES OF INDUSTRIAL FARMS AND MIXED SMALLHOLDINGS: LESSONS FROM THE NORTH

Journal Article

HOTSPOTS OF NUTRIENT LOSSES TO AIR AND WATER: AN INTEGRATED MODELING APPROACH FOR EUROPEAN RIVER BASINS

Journal Article

GASEOUS REACTIVE NITROGEN LOSSES FROM ORCHARDS, VEGETABLES AND TEA PLANTATIONS

Journal Article

Exergy losses in premixed flames of dimethyl ether and hydrogen blends

Tongbin ZHAO, Jiabo ZHANG, Dehao JU, Zhen HUANG, Dong HAN

Journal Article

Test investigation on hydraulic losses in the discharge passage of an axial-flow pump

QIU Baoyun, CAO Haihong, JIANG Wei, GAO Zhaohui, WANG Fei

Journal Article

Development and testing of a weather-based model to determine potential yield losses caused by potato

Alexey FILIPPOV, Maria KUZNETSOVA, Alexander ROGOZHIN, Olga IAKUSHEVA, Valentina DEMIDOVA, Natalia STATSYUK

Journal Article

CLIMATE-CHANGE-INDUCED TEMPORAL VARIATION IN PRECIPITATION INCREASES NITROGEN LOSSES FROM INTENSIVE CROPPING

Journal Article

Acoustic fault signal extraction via the line-defect phononic crystals

Journal Article

Numerical study of conduction and radiation heat losses from vacuum annulus in parabolic trough receivers

Dongqiang LEI, Yucong REN, Zhifeng WANG

Journal Article

Calculations of narrow-band transimissities and the Planck mean absorption coefficients of real gases using line-by-line

Huaqiang CHU, Mingyan GU, Huaichun ZHOU, Fengshan LIU

Journal Article

NUTRIENT USE EFFICIENCY AND LOSSES OF INDUSTRIAL FARMS AND MIXED SMALLHOLDINGS: LESSONS FROM THE NORTH

Yifei MA, Ling ZHANG, Zhaohai BAI, Rongfeng JIANG, Yong HOU, Lin MA

Journal Article

Pareto lexicographic α-robust approach and its application in robust multi objective assembly line balancing

Ullah SAIF,Zailin GUAN,Baoxi WANG,Jahanzeb MIRZA

Journal Article

Choosing configurations of transmission line tower grounding by back flashover probability value

Dmitry KUKLIN

Journal Article