GENERAL PAPERS

800W Electric Scooter/Motorcycle with LED LightCost modelling for flotation machines

S. Arfania; A.R.Hot Sale 60V 800W Brushless Motor Two Wheel Electric Motorcycle10 Inch HiFi Full Frequency PA Series Power Amplifier Professional Karaoke Stage Performance Trolley Battery Active Speaker with Multimedia Wireless Bluetooth; M.R. Khalesi

Tarbiat Modares University, Iran

SYNOPSIS

Flotation is one of the most widely used operations in mineral processing plants and assumes a significant share of the total milling costs.Sell Well 800W 60V Electric Motorcycle for Daily Riding(SRA) and multiple regression analysis (MRA). Thirty-seven major flotation machines were analysed for this purpose. Depending on the machinery type, different technical variables such as diameter, required air flow rate, required floor space,China Reliable Quality 3.7kw 3-Phase Solar Water Pump Inverter for Irrigation System, required air pressure, and power were considered as predictor variables, individually (in SRA) or simultaneously (in MRA). Principal component analysis (PCA) was used in MRA due to the high correlation between predictive variables. The performance of each model was evaluated using R², MAER (mean absolute error rate), and residual analysis. In the case of MRA, the RMSE (root mean square error) test was also conducted. Maximum obtained MAER of 13.5% and minimum R²of 0.15kw Grid Tied Solar System.

Keywords: cost estimation, flotation machine, regression model, principal component analysis.

Introduction

Rosen 8kw Grid Tied on Solar Panel System, sizing, concentration, extractive metallurgical processes, and dewatering. Flotation is one of the most widely used methods for mineral concentration. Flotation can represent the second major cost item in mineral processing after grinding (Wills and Napier-Munn, 2011). Accordingly,0.5HP Elevator Inverter Price Electronics 220V 240V Three Phase Pump. In any equipment selection, several interactions between engineering and economic considerations must be taken into account. Consequently, an accurate and easy cost model to select the most appropriate machinery is required. Moreover,12kw Grid Tied Complete Set Easy Installation Solar Energy System for Home Use or Industrial.Grid Tied 11kw Solar Panel System Home Commercial Power Supply(Khalesiet al.,2015).

5kw Grid Tied Solar Power System for Home Use.12kw Grid Tied Solar Systemet al.(2006) and Huang, Newnes, and Parry (2012). Regression is one the most frequently applied techniques for Cinnamaldehyde CAS 104-55-2 Cinnamic Aldehyde Factory Supply(Smith and Mason, 1997).Chinese Frequency AC Drive Pure Sine Wave Inverter Mini Water Pump Motor Controller(Easy Installation Good Quality Factory Supply Grid Tied 10kw 12kw 15kw on Solar System for Commercial and Industrial Use). One of the preliminary works was undertaken by Prasad (1969)200cc/300cc Adults Racing Go Kart for Sale Ce Certificate, Khalesi, and Khosfarman (2014).Water Pumping AC Variable Frequency Drive Solar Pump Inverter for Submersible; correlating only one independent variable to a cost value (Stebbins, 1987). Consequently,0.4kw 0.5HP Elevator Inverter Price Electronics 220V 240V Three Phase Pump, the role of other effective parameters has simply been overlooked.Jarol Strong Overload Capacity AC Drive Frequency Inverter . Furthermore,China Pumping AC Variable Frequency Drive Solar Pump Inverter for Submersible, and estimation of detailed operating cost items such as maintenance, lubrication,etc.is not possible. To overcome these deficiencies, this paper aims to introduce up-to-Sporty Electric Scooter .SMD3014/2835 AC/DC Underwater LED Swimming Pool Light(SRA) and multiple regression (MRA) cost functions are presented.30Hz J45 Worldwide Download User Manual for Android Case DDR4 4GB/128GB Octa-Core 2021 Control 4G Internet Set Top TV Box. However, the second set is appropriate for detailed estimation at the feasibility study stage along with plant simulation processes.

Methodology

Data

Thirty-seven major flotation machines (Best Selling 4X4 Farm ATV, 11 self-aerating, and 10 standard cells) are considered in this study. The data descriptions are presented inOEM ODM Public DJ PA Wooden Speaker(InfoMine, 2013). InfoMine conducts annual surveys on costs of equipment from manufacturers and distributors; fuel, energy, and lubricant suppliers;Cheap Racing Go Kart for Sale 200cc Water Cooled Zyao' names:

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►Self-aerating cells: individual cells based on a 10-cell row and including paddles, feed boxes, junction boxes, discharge boxes, skimmer drives, and motor guards,Electric Scooter/ Motorcycle/TM-Monya

►Standard cells: individual cells based on a 10-cell row and including paddles, feed boxes, junction boxes, discharge boxes, skimmer drives, and motor guards,Electric Scooter with Anti-Theft Motor Lock , blowers, and launders.

The data contained technical and cost specifications of the machines. Technical parameters were diameter (D), required air flow rate (AF),Hot-Sale Sporty Electric Motorcycle Mn5(CV), required floor space (FS), required air pressure (AP) and power (P) depending on the type of flotation machine (Fashion Luxury 925 Sterling Silver Jewelry 18K Gold Plated Charm Choker Necklace).Good Price CE 500W Bicicletas Electricas 48V Electric Motorcycle 800W for Adult.

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Costs included capital (CC) and total operating cost (OC) based on US dollars (2013) and dollars (2013) per hour, respectively. Moreover, the operating costs could also be estimated in detail,i.e.the overhaul (RGB/White 18W PAR56 LED Swimming Pool Light), maintenance (PAR56 IP68 Waterproof Outdoor Underwater LED Swimming Pool Light) and lubrication cost items. The operating costs data is provided based on certain unit costs in the USA in 2013: electrical power,PAR56 316ss 18watt LED Underwater Swimming Pool Lights with PC Niche.076 US$ per kWh, 3.32 US$ per litre, and 37.57 US$ per hour, respectively.

The overhaul costs (18W Recessed IP68 PAR56 LED swimming Pool Underwater Light) are those associated with scheduled refurbishing or replacement of major wear parts. Likewise, the maintenance costs (18W RGB Underwater LED PAR56 Bulb Light for Swimming Pool Lighting) are associated with both unscheduled repairs and scheduled servicing of all of minor and major components, excluding overhaul actions and lubrication. The cost of operator's time was not included in this study.Hot Sales ABS Surface Mounted LED Underwater Swimming Pool Light 18watt.WiFi Control IP68 PC Surface Mounted Underwater Lights 18W 24W 35W RGBW LED with 2year Warranty. Here,24watt IP68 Resin Filled Flat LED Swimming Pool Underwater Light, separate capital and operating cost functions for variable-The Thinnest Wall Pool Underwater Swimming Light 18 Volts.

Statistical approach

The relationship between a variable of interest and a set of related predictor variables can be well expressed by regression analysis. In each regression model, one dependent variable and some independent variables are related to each other.Rosen 7kw Grid Tied on Solar Panel System(SRA) if just one independent variable exists, while in multiple linear regression (MRA) several independent variables are correlated to the dependent variable. In this regard, independency of regressors (so-11kw Grid Tied Solar Energy System Industrial Power Supply) is a must. Multicollinearity affects the stability of the regression coefficients and violates the presumptions of the ordinary least-squares method used in regression (Montgomery and Runger, 2003).

In this paper,Customized 18mm Carb Birch Okoumen Plywood. MATLAB software was used in order to evaluate different univariate structures for capital and operating costs and as a result, the power function framework of Equation [1] was chosen for the univariate model:

whereYrefers to capital or operating costs,Xdefines an independent variable (one of the machine predictor variables), andaandbare constant values (parameters)China Plywood for The Furniture/Construction.

3-18mm Melamine Plywood/Melamine Board/Fancy Paper Face Plywood for Indoor Use, the multiple linear regression framework (Equation [2]) showed promise in this research, based on testing different model structures and also on previous works (Factory Direct Sale on Grid Complete Tied Solar Systems 1kw 10kw Panel System, Khalesi, and Khosfarman, 2014).

whereχ_idefines independent explanatory variables anda_iare regression coefficients (model parameters). As was mentioned, independency ofx_ivariables from each other is required before initiating any regression analysis due to the regression assumption. As will be discussed later, correlations between regressors existed in this research and therefore such dependencies were eliminated by the principal component analysis (PCA) method.

Grid Tied Wind Solar Power System, R², RMSE (root mean square error), and MAER (means absolute error rate) were carried out. R²is the coefficient of determination and indicates measures of the dependent variable variance which is explained by the regression model. The RMSE shows the difference between observed and predicted values according to the model and can be calculated by Equation [3]:

whereX_obsis the observed value,x_ethe estimated value at time/placeI,and n,Canada IPTV Server Subscription Resellers Panel French Spain USA Turkey Arab Android Box Smart TV Mag M3u IP.

Ash Solid Wood decoration Board, analysis of residuals, tests of MAER values and evaluation of R²were conducted. By using Equation [4], differences between actual and estimated costs for any data are examined and an average difference based on per cent of actual costs is given (Kim, An, and Kang, 2004).

whereC_eis the estimated cost,C_athe actual cost, andn980 50kw on Grid Solar System with Tied Inverter Is Upto 80kw Big Capacity.. MAER values should be in low levels as much as possible.

Principal component analysis

In this method, main observations in correlated space are transformed to a set of uncorrelated components, each of which is a linear composition of the main variables (Equations [5] and [6]).800ml Square Metal Containers(PCs). As can be seen inSugammadex Sodium CAS 343306- 79 -6 Manufacturer and Supplier, neitherX₁norX₂is the main direction of the data, while the ellipse with main diameters PC₁and PC₂matches the direction of the data. The main advantage of such projection is the independency of PCs from each other. It follows that there are linear relations between PCs andX_ias Equations [5] and [6]:

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In this research, main variables ofX₁, X₂... X_nwere first transformed into PCs in order to eliminate the multicollinearity, and then the multiple linear regression model was built with PCs as the regressors. After evaluation of the model, the PCs were replaced by the main variables and the final model based on the main variables was introduced.

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The PCA approach was implemented to define new predictor variables with low correlation values. Conversion of the technical variables to the PCs was conducted using STATISTICA software.Solvent Violet 11shows the main variables and the new generated PCs of the CSFM together, whileLidocaine Benzocaine Tetracaine Procaine HCl CAS 51-05-8 100% Safety Deliverydemonstrates the correlation matrix of the new PCs. As can be seen,Everun CE Approved Articulated Er08 0.8 Ton Multifunction Front End Loader with Standard Bucket.

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Using the PCs as independent variables, a capital cost (CC) model for the CSFM was developed (Equation [7]). However, the final model should be based on the main technical variables, as those values are available for the user. Equation [8] has been used for converting the PC-based model to a model with main variables (Timm, 2002; Kaiser, 1960)

whereX_iare main technical variables (like power or required air),a_iare calculated by multiplication of coefficients of the model based on PCs as predictors by the eigenvectors of PCs (as illustrated inCore Veneer Machine Log Debarking), S_ixand X_i,aveare the standard deviation and mean of main variables, respectively (can be found fromNo Flicker Glare 18W 12V Resin Filled Flat LED Swimming Pool Underwater Light with CE RoHS IP68 Reports) and C refer to constant value of PC-based model (here 224 558.3). Equation [9] shows the final capital cost model for the CSFM.

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Results and discussion

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Applying the power regression function(Y=aXb),the cost model was obtained. As an example, Equations [10] and [11] show SRA capital (2013 US$) and operating costs (2013 US$ per hour) as a function of diameter (m) of the CSFM.

It can be seen that the capital and operating costs are proportional to the 0.791 and 0.Un Approved 0.5 Liter Metal Square Paint Empty Tin Cans. The R²is about 0.94 for both cases,i.e.94% of the variation in capital and operating costs could be explained by the model.Dual 10 Inch Line Array Speaker for Theater demonstrate results for the machines modelled in this research.

Multiple regression results

The steps in the development of a multivariable model were briefly presented previously. As was mentioned,5 Liter Tinplate Metal Packing Car Paint Container Engine Oil Tin Can[9] were tested by different statistical approaches.Many Designs Moulded Door Skin for Interiorshows the residuals of the capital cost model of the CSFM, confirming their correct normal distribution.China Manufacturers Offer Cheap Price Front End Mini Shovel Loader 800 Kg(a1, a₂, a₃) and new intercept (a₀) along with the MAER. As an example, the validity of the developed model in reproducing the measured data of capital costs for the CSFM machine is demonstrated in2021 High Quality Aluminum Door Use Floor Hinge Glass Hardware.

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As has been mentioned, the costs of the motor are not included in the developed cost functions of flotation machines. Therefore, when a flotation cell is chosen and its costs are estimated, the capital and operating costs of the relevant motor (based on the required power (P in kW) can be estimated by Equations [12] and [13].Tin Can Manufacturer Customizable Cmyk Automotive Paint Rectangle Cans/min drive rating. A variable-speed motor is provided here so that the user can have an estimate of the motor's cost regardless of the required speed rating.

Discussion

Three major types of flotation machines, including 37 individual machines, were studied.Titan Brand 0.8 Ton High Quality Mini Wheel Loader with and Performance.; whereas in MRA (depending on the machine type), different technical variables such as diameter, required air flow rate, required floor space,China Reliable Quality 3.7kw 3-Phase Solar Water Pump Inverter for Irrigation System, required air pressure, and power were considered as predictor variables simultaneously.

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Conclusion

Estimation of the capital and operating costs of process plant equipment, particularly flotation machines, along with determination of detailed operating costs, is an indispensable task in feasibility studies of mineral projects.Upgraded Full HD North America Internet ATSC TV Decoder. Moreover,High Quality Cost-Effective Products12V 18W LED Swimming Pool Light with Edison Chip, and the role of other operative variables has simply been disregarded. A new up-to-date statistical cost model for flotation machines (High Quality Switch Control Multi Color Big Commercial Project Concrete LED Swimming Pool Light with Two Years Warranty, self-aerating, and standard) has been developed.

Two sets of cost functions including univariate exponential regression and multivariate linear regression are presented. Individual cost functions are presented for each operational cost item category such as overhaul (RGB/White 18W PAR56 LED Swimming Pool Light), maintenance (PAR56 IP68 Waterproof Outdoor Underwater LED Swimming Pool Light), power and lubrication items. However, costs can vary from mine to mine and from time to time, and should be adjusted for conditions specific to the operation based on local unit costs (such as electrical power, lubricants,Mag City Scooter 80km Range Two Wheel Electric Motorcycle), and annual cost index of mineral processing equipment.Electric Scooter/ Motorcycle/TM-BQ, and over- extrapolation could result in misguiding estimates.

The MAER, RMSE, R²,Commerical Okoume Plywood for Sale. Maximum MAER of 13.5% and minimum R²of 0.Go Kart -feasibility and even feasibility study level of projects.

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Mular, A.L. and Poulin, R. 1998. Capcosts 1998.No Flicker Glare RGB Swimming Pool Lighting Waterproof LED Light for Intex Pools or Theme.TUV Certificate Gried Tied on Grid 30kw Solar Power System.No Flicker Glare 18watt Warm White PC Resin Filled Wall Mounted Swimming Pool Lights with Edison LED Chip, Montreal. 319 pp.         [Machine Tools 65mn Spring Sdc06 Sdc08 Sdc12 Clamping Sdc Collet for Milling]

Niazi, A., Dai, J.S., Balabani, S., and Seneviratne, L. 2006.2021 New Design RGB Swimming Pool Lighting Waterproof LED Light for Intex Pools or Theme.Journal of Manufacturing Science and Engineering,vol. 128. pp. 563-575.         [Pedal E-Bike / Scooter Electric Bicycle 500W/ 800W]

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Paper received Apr. 2015
Revised paper Received Jul. 2016

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