scholarly journals Design for Real Temperature and Moisture Analysis on Battery Bank and Nobreak

2019 ◽  
Vol 6 (11) ◽  
pp. 386-389
Author(s):  
Wesley Muller Costa Nunes ◽  
Gilber Carvalho de Souza ◽  
Leandro Rodrigo Almeida da Silva ◽  
Bruno Pereira Gonçalves ◽  
Jean Mark Lobo de Oliveira ◽  
...  
Keyword(s):  
Moisture Analysis ◽  
Battery Bank ◽  
Real Temperature

HEALTHINESS OF OIL PALM PLANTATION TOWARDS SUSTAINABILITY OF ENVIRONMENT

2020 ◽  
Vol 7 (1) ◽  
pp. 21
Author(s):  
Faradina Marzukhi ◽  
Nur Nadhirah Rusyda Rosnan ◽  
Md Azlin Md Said
Keyword(s):  
Oil Palm ◽  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Satellite Image ◽  
Vegetation Indices ◽  
Soil Nutrient ◽  
Oil Palm Plantation ◽  
Sustainable Environment ◽  
Moisture Analysis ◽  
The Relationship

The aim of this study is to analyse the relationship between vegetation indices of Normalized Difference Vegetation Index (NDVI) and soil nutrient of oil palm plantation at Felcra Nasaruddin Bota in Perak for future sustainable environment. The satellite image was used and processed in the research. By Using NDVI, the vegetation index was obtained which varies from -1 to +1. Then, the soil sample and soil moisture analysis were carried in order to identify the nutrient values of Nitrogen (N), Phosphorus (P) and Potassium (K). A total of seven soil samples were acquired within the oil palm plantation area. A regression model was then made between physical condition of the oil palms and soil nutrients for determining the strength of the relationship. It is hoped that the risk map of oil palm healthiness can be produced for various applications which are related to agricultural plantation.

scholarly journals Dry and Wet Climate Periods over Eastern South America: Identification and Characterization through the SPEI Index

Atmosphere ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 155
Author(s):  
Anita Drumond ◽  
Milica Stojanovic ◽  
Raquel Nieto ◽  
Luis Gimeno ◽  
Margarida L. R. Liberato ◽  
...  
Keyword(s):  
South America ◽  
Potential Evapotranspiration ◽  
Monthly Precipitation ◽  
Economic Activities ◽  
Central Brazil ◽  
Moisture Analysis ◽  
Dry Conditions ◽  
Wet Climate ◽  
Climate Events

A large part of the population and the economic activities of South America are located in eastern regions of the continent, where extreme climate events are a recurrent phenomenon. This study identifies and characterizes the dry and wet climate periods at domain-scale occurring over the eastern South America (ESA) during 1980–2018 through the multi-scalar Standardized Precipitation–Evapotranspiration Index (SPEI). For this study, the spatial extent of ESA was defined according to a Lagrangian approach for moisture analysis. It consists of the major continental sink of the moisture transported from the South Atlantic Ocean throughout the year, comprising the Amazonia, central Brazil, and the southeastern continental areas. The SPEI for 1, 3, 6, and 12 months of accumulation was calculated using monthly precipitation and potential evapotranspiration time series averaged on ESA. The analysis of the climate periods followed two different approaches: classification of the monthly SPEI values as mild, moderate, severe, and extreme; the computation of the events and their respective parameters (duration, severity, intensity, and peak). The results indicate that wet periods prevailed in the 1990s and 2000s, while dry conditions predominated in the 2010s, when the longest and more severe dry events have been identified at the four scales.

scholarly journals High-efficiency method for recycling lithium from spent LiFePO4 cathode

2020 ◽  
Vol 9 (1) ◽  
pp. 1586-1593
Author(s):  
Tingting Yan ◽  
Shengwen Zhong ◽  
Miaomiao Zhou ◽  
Xiaoming Guo ◽  
Jingwei Hu ◽  
...  
Keyword(s):  
Inductively Coupled Plasma ◽  
High Efficiency ◽  
Optical Emission ◽  
Extraction Process ◽  
Emission Spectrometry ◽  
X Ray Diffraction ◽  
Inductively Coupled ◽  
Moisture Analysis ◽  
Lifepo4 Cathode ◽  
Solid Liquid

Abstract The extraction of Li from the spent LiFePO4 cathode is enhanced by the selective removal using interactions between HCl and NaClO to dissolve the Li+ ion while Fe and P are retained in the structure. Several parameters, including the effects of dosage and drop acceleration of HCl and NaClO, reaction time, reaction temperature, and solid–liquid ratio on lithium leaching, were tested. The Total yields of lithium can achieve 97% after extraction process that lithium is extracted from the precipitated mother liquor, using an appropriate extraction agent that is a mixture of P507 and TBP and NF. The method also significantly reduced the use of acid and alkali, and the economic benefit of recycling is improved. Changes in composition, morphology, and structure of the material in the dissolution process are characterized by inductively coupled plasma optical emission spectrometry, scanning electron microscope, X-ray diffraction, particle size distribution instrument, and moisture analysis.

Moisture Analysis of Freeze-Dehydrated Cottage Cheese

1967 ◽  
Vol 50 (6) ◽  
pp. 1279-1283
Author(s):  
James L Fowler ◽  
Charles H Coleman
Keyword(s):  
High Capacity ◽  
Cottage Cheese ◽  
Oven Method ◽  
Vacuum Oven ◽  
Drying Time ◽  
Alternative Method ◽  
Moisture Analysis ◽  
Government Laboratories

Abstract A large number of samples of dehydrated cottage cheese are received by government laboratories for moisture analysis, and the apparatus for performing the test by the prescribed method lacks adequate capacity to handle them. Therefore, an experiment was designed to test whether analysis by an alternative method making use of high capacity apparatus would give comparable results. It was concluded that the mechanical convection air oven, 100—102°C, 16—18 hr drying time, did not give results comparable to the specified vacuum oven method

Hibridno napajanje telekomunikacione i merne opreme daljinskih mernih stanica u sistemima zaštite od poplava

2020 ◽  
Vol 22 (1-2) ◽  
pp. 102-111
Author(s):  
Željko Despotović ◽  
◽  
Marko Tajdić ◽  
Jovan Kon
Keyword(s):  
Energy Source ◽  
Power Supply ◽  
Measuring Equipment ◽  
Primary Energy ◽  
Street Lighting ◽  
Measuring Station ◽  
Hybrid Power ◽  
Telecommunication Equipment ◽  
Battery Bank ◽  
Flood Protection System

The paper will present the implementation of a hybrid power supply for telecommunication and corresponding measuring equipment of remote measuring stations, which are an integral part of the flood protection system. Solar power is the primary energy source during the day, while in night conditions it is actually used as a distribution network (which also supplies street lighting). The power system is implemented with two controlled MPPT chargers (mains and solar), 12V / 110Ah battery bank and associated monitoring system. The paper will present key experimental results obtained during the release of a concrete realized measuring station and associated telecommunication equipment, on the Ub River, Ub Municipality.

scholarly journals Performance Analysis of a Stand-Alone PV/WT/Biomass/Bat System in Alrashda Village in Egypt

2021 ◽  
Vol 11 (21) ◽  
pp. 10191
Author(s):  
Hoda Abd El-Sattar ◽  
Salah Kamel ◽  
Hamdy Sultan ◽  
Marcos Tostado-Véliz ◽  
Ali M. Eltamaly ◽  
...  
Keyword(s):  
Hybrid System ◽  
Storage System ◽  
Optimal Solution ◽  
Grey Wolf Optimizer ◽  
Storage Unit ◽  
Renewable Power ◽  
First Case ◽  
Cost Of Energy ◽  
Battery Bank ◽  
Sooty Tern

This paper presents an analysis and optimization of an isolated hybrid renewable power system to operate in the Alrashda village in the Dakhla Oasis, which is situated in the New Valley Governorate in Egypt. The proposed hybrid system is designed to integrate a biomass system with a photovoltaic (PV), wind turbine (WT) and battery storage system (Bat). Four different cases are proposed and compared for analyzing and optimizing. The first case is a configuration of PV and WT with a biomass system and battery bank. The second case is the integration of PV with a biomass system and battery bank. The third case is WT integrated with biomass and a battery bank, and the fourth case is a conventional PV, WT, and battery bank as the main storage unit. The optimization is designed to reduce component oversizing and ensure the dependable control of power supplies with the objective function of reducing the levelized cost of energy and loss of power supply probability. Four optimization algorithms, namely Heap-based optimizer (HBO), Franklin’s and Coulomb’s algorithm (CFA), the Sooty Tern Optimization Algorithm (STOA), and Grey Wolf Optimizer (GWO) are utilized and compared with each other to ensure that all load demand is met at the lowest energy cost (COE) for the proposed hybrid system. The obtained results revealed that the HBO has achieved the best optimal solution for the suggested hybrid system for case one and two, with the minimum COE 0.121171 and 0.1311804 $/kWh, respectively, and with net present cost () of $3,559,143 and $3,853,160, respectively. Conversely, STOA has achieved the best optimal solution for case three and four, with a COE of 0.105673 and 0.332497 $/kWh, and an NPC of $3,103,938 and $9,766,441, respectively.

Sign in / Sign up

Export Citation Format

Share Document