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## Process Equipment Cost By Size Exponent

Jan 25, 2021

TABLE 1 Cost Ratios for Increasing the Size of a Plant as a Function of Exponent R Cost Ratios for Size Multiples Process Plants, Costs of Scaledup Units 17 Equation (1) can be modified to take inflation into account This is done by multiplying the capacity ratio by the ratio of cost indexes, as in Eq (3): (3) Here, 11 and 12 are cost

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• Process Equipment Cost By Size Exponent

Index of 277 pieces of Process Equipment. office (405) 340-2673 fax (866) 583-3035 toll-free (800) 525-6277

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• Process Equipment Cost By Size Exponent

Use the power-sizing model to estimate the cost of a piece of equipment that has 75% more capacity than a similar piece of equipment that cost \$1,000. The appropriate power sizing exponent for this type of equipment is 0.725. Choose an answer by clicking on one of the letters below, or click on Review topic if needed. A \$1,750. B \$725. C \$750

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• Process Equipment Cost By Size Exponent

process. Variable Costs ... Cost of equipment A = Size or capacity of equipment A Cost of equipment B Size or capacity of equipment B Where x is the power-sizing exponent (Look at table 2-1 in your text for power-sizing exponent values) x If x=1 →linear cost-size relationship

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• Process Equipment Cost By Size Exponent

Assuming a linear relationship between power and cost, and assuming also that power is a cost driver of solar array cost, the single-point analogy calculation can be performed as follows: Solar Array Cost for System B = 3.4/2.3 * \$10M = \$14.8M Complexity or adjustment factors can also be applied to an analogy estimate to make allowances for year

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• Process Equipment Cost By Size Exponent

EQUIPMENT COST ESTIMATING / 8 Manufacturers' Quotations / 8 Estimating Charts / 10 Size Factoring Exponents / 11 Inflation Cost Indexes / 13 Installation Factor / 16 Module Factor / 18 Estimating Accuracy / 19 Estimating Example / 19 References / 21 3. PLANT COST ESTIMATES / 22 Accuracy and Costs of Estimates / 22 Cost Overruns / 25 Plant Cost

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• Process Equipment Cost By Size Exponent

The Total Installed Cost (TOT) estimate was then obtained by multiplying the appropriate factor by the equipment cost, or TOT = Equip * f The overall factor estimate calculated included not only the delivered process equipment cost, but material and labor costs for site improvements, foundations, steel, buildings, piping, electrical, controls

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• Process Equipment Cost By Size Exponent

Feb 05, 2012 Effect of capacity on cost • A equipment cost attribute n • C purchased cost Ca Aa • n cost exponent Cb Ab – typically 0.4-0.8 – Often use n = 0.6, then refer to eqn as the 6/10ths rule – 6/10ths rule can be used to scale up an entire process • a unit with required attribute • b unit with base attribute Exponents tabulated in

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• Process Equipment Cost By Size Exponent

An equipment factored estimate is produced by taking the cost of individual types of process equipment, and multiplying it by an installation factor to arrive at the total costs. In practice, this has proven to be quite a useful method since a substantial part of

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• Process Equipment Cost By Size Exponent

Aug 23, 2013 Capacity Scale-Up Thumb Rules-Suggestions Needed - posted in Industrial Professionals: Hi, There is an existing chemical plant with known design. If the plant has to be scaled-up to say 125% or 150% of its current capacity and for want of time, a rough conceptual design has to be made for CAPEX estimation purposes, I wanted to know what are thumb rules, if any, that can be

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• Process Equipment Cost By Size Exponent

the cost required to prepare an estimate, relative to that for preparing a Class 5 estimate. For example, if it costs 0.005 percent of the project cost to develop a Class 5 estimate, then a Class 1 estimate could require as much as 100 times that, or 0.5 percent of the total project cost. Figure 1—The capacity-factored relationships

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• Process Equipment Cost By Size Exponent

Aug 29, 2017 C 1 = cost of Plant / equipment 1 . C 2 = cost of Plant/ equipment 2 . Q 1 = capacity or size of Plant/ equipment 1 . Q 2 = capacity or size of Plant/ equipment 2 . x = power-sizing exponent or the cost-capacity exponent . One of the model is called six-tenth (6/10) factor rule, according to this rule x =0.6 . 3. Unit- cost estimate

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• Process Equipment Cost By Size Exponent

tenth’s factor” method due to the common reliance on an exponent value of 0.6 if no other information is available. With an exponent of 0.6, doubling the capacity of a facility increases costs by approximately 50 percent, and tripling the capacity of a facility increases costs by approximately 100 percent

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• Process Equipment Cost By Size Exponent

Mar 01, 1986 One aspect of scale economies which has received more attention in the engineering than in the economics literature is the “0.6 rule”. This rule has its origins in the relationship between the increase in equipment cost (C) and the increase in capacity (V) given by C 1 /C 2 = (V 1 /V 2) α where α denotes the scale coefficient.A value of α less than unity implies increasing returns to scale

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• Process Equipment Cost By Size Exponent

Table 1: Examples of Cost Exponents for Process Equipment. Equipment Type Range of Correlation Capacity Units Cost Exponent (n) Air compressor, multiple stages: 1 -1500 [latex]kW[/latex] 0.85: Shell and tube heat exchanger stainless steel: 1.9 – 1860 [latex]m^2[/latex] 0.60:

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• Process Equipment Cost By Size Exponent

equipment, structures, and buildings, as well as to bring them into operation. This may be a daunting task for the cost engineer depending on the scope and size of the process being built. This study aims to compare different methods of calculating the equipment capital cost for major process equipment found inside many process plants

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• Process Equipment Cost By Size Exponent

Equipment Design and Cost Estimation for Small Modular Biomass Systems, Synthesis Gas Cleanup, and Oxygen Separation Equipment . Task 1: Cost Estimates of Small Modular Systems . Nexant Inc. San Francisco, California . Subcontract Report . NREL/SR-510-39943 . May 2006

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• Process Equipment Cost By Size Exponent

Sep 04, 2018 The cost-to-capacity method is an order-of-magnitude cost estimation tool that uses historical costs and capacity in order to develop current cost estimates for an entire facility or a particular piece of machinery or equipment. The cost-to-capacity concept was originally applied in 1947 by Roger Williams Jr. to develop equipment cost

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• Process Equipment Cost By Size Exponent

and r is the exponent, or proration factor. (equation 1) ... include the risk in case of dissimilar process and size. Apply location and escalation adjustments to normalize costs ... indices provide equipment cost index values arranged in accordance to the process industry in which the unit is used, using 1926 as the base period

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• Process Equipment Cost By Size Exponent

COST ESTIMATION Cost Indexes Present Cost=(original cost at time t)* • Marshall and Swift. 1. All industry-equipment index. Arithmetic average of 47 equipment types. 2. Process-industry equipment index. Weighted average of 8 of these: cement 2% paint 5% chemicals 48% paper 10% clay products 2% petroleum 22% glass 3% rubber 8% M&S was 100 in 1926

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• Process Equipment Cost By Size Exponent

Instructions for file “EQUIPMENT COSTS” accompanying Plant Design and Economics for Chemical Engineers, 5th edition, Peters, Timmerhaus, and West. 1. The opening sheet of the file EQUIPMENT COSTS is called CALCULATION PAGE. The column at the left lists equipment types alphabetically. The names used are the same as those on the cost figures

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• Process Equipment Cost By Size Exponent

Feb 21, 2016 C = F * Sum (C_e) C is the total capital cost, F is the installation factor also known as Lang factor, and C_e is the cost of major equipment. Lang factor is 3.1 for solid processing plant and 4.74 for fluids processing plant. Better estimate can be made when the different factors are used for corresponding equipment

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• Process Equipment Cost By Size Exponent

An analysis of the cost of individual pieces of equipment shows that the size factor’s exponent will vary from 0.3 to unity, but the average is very near to 0.6, thus the name for the rule of thumb. If a higher degree of sophistication is sought, Table 1 below can be used. It lists the value of a size exponent for various types of process equipment. The Table 1 values have been condensed from a

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• Process Equipment Cost By Size Exponent

C 1 = cost of Plant / equipment 1 C 2 = cost of Plant/ equipment 2 Q 1 = capacity or size of Plant/ equipment 1 Q 2 = capacity or size of Plant/ equipment 2 x = powersizing exponent or the costcapacity exponent One of the model is called sixtenth (6/10) factor rule, according to this rule x

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• Process Equipment Cost By Size Exponent

Process Equipment, Cost Scale-up Determination of R Values The relationship between cost and capacity is given by the equation size2 cost2 costl Sizel A plot of the ratios on a log-log scale produces a straight line. R values for equipment have a larger range than for entire process plants, for which the

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• Process Equipment Cost By Size Exponent

Equipment Sizing and Capital Cost Estimation 15 Cost Equations SSL (2004) –Purchase Cost Equationsfor numerous process units –see Table 16.32 for “other” equipment items. •Available literature sources back to 1960 consulted. •After determining a suitable

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• Process Equipment Cost By Size Exponent

Cost Ratios for Size Multiples Process Plants, Costs of Scaled-up Units 17 Equation (1) can be modified to take inflation into account. This is done by multiplying the capacity ratio by the ratio of cost indexes, as in Eq. (3): (3) Here, 11 and 12 are cost indexes for particular years. Among the indexes available for adjusting the costs of process plants are the Chemical Engineering (CE) plant cost

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• Process Equipment Cost By Size Exponent

Matches' Process Equipment Cost Estimates. Matches provides conceptual (order-of-magnitude) process equipment cost estimates for over 275 types of equipment used in the chemical and metallurgical industry. We provide this educational process equipment cost information to help you establish project scope in evaluation of process alternatives

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• Process Equipment Cost By Size Exponent

Jan 01, 2002 @article{osti_797810, title = {Process Equipment Cost Estimation, Final Report}, author = {Loh, H. P. and Lyons, Jennifer and White, Charles W.}, abstractNote = {This report presents generic cost curves for several equipment types generated using ICARUS Process Evaluator. The curves give Purchased Equipment Cost as a function of a capacity variable

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• Process Equipment Cost By Size Exponent

Equipment Cost Correlations Costs are usually correlated in terms of a base cost multiplied by a ratio of sizes raised to the power “n”. Cost 2 = Cost ref (size 2/size ref) n. The cost is usually the FOB cost although sometimes it is the field erected cost. The size should be a “cost

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• Process Equipment Cost By Size Exponent

Jul 02, 2015 Introduction. The cost-to-capacity method can be a very useful tool when developing elements of the cost approach in many valuations. It is a order-of-magnitude cost estimation tool that uses historical costs and capacity in order to develop current cost estimates for an entire facility or a particular piece of machinery or equipment 

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