# calculation of powder selection efficiency

Chapter 8 BLAST DESIGN

2014-6-11 · Powder Factor = Tons of rock (or cubic yards) per pounds of explosive. Normal range = 4 to 7 Shallow holes = 1 to 2 External loads = .3 Tons of Rock = Powder Factor lbs of Explosives The higher the powder factor, the lighter the load. Lower powder factor means more explosives. Example: 1.5 tons = PF of 6.25lbs BURDEN-SPACING CALCULATION

Magnetics

The task of core loss calculation is to determine Bpk from known design parameters. Method 1 – Determine B pk from DC Magnetization Curve. B pk = f (H) Flux density (B) is a non-linear function of magnetizing field (H), which in turn is a function of winding number of turns (N), current (I), and magnetic path length (le).

Efficiency Calculations for Selected Scintillators

2018-9-12 · The detector counting efficiency (DE) relates the amount of radiation emitted by a radioactive source to the amount measured in the detector. The DE can be used to calculate the counting rate expected in a detector when the source strength is known or to calculate the source strength by measuring the counting rate in the detector.

Powder Selection

2013-10-16 · The formula for the powder selection index, or "quickness," can be written as: 20 + 77.5 / sqrt( RC * SD ) Here, a result of 100 represents the burning rate of 4350, as measured in a laboratory test, and higher numbers represent faster powders, with 4227 being a 180.

Boiler Efficiency: Introduction and Methods of Calculation

In actual practice, two methods are commonly used to find out boiler efficiency, namely direct method and indirect method of efficiency calculation. Direct efficiency. This method calculates boiler efficiency by using the basic efficiency formula-η=(Energy output)/(Energy input) X 100. In order to calculate boiler efficiency by this method, we ...

Calculating the Cost of Powder Coating | Products Finishing

2017-8-1 · Powder cost per pound = \$3.50. A pound of powder with a specific gravity of 1.0 at 100-percent utilization will cover 192.3 ft. 2 at a thickness of 1 mil. That is the starting point for calculating the powder …

Motor Calculations

2006-8-31 · At each point selected for calculation, the efficiency of the motor is the mechanical power output divided by the electrical power input. Once again, a sample table for motor 1624E009S is shown in Table 1. and a sample curve in Graph 1. Maximum efficiency occurs at about 10% of the motor stall torque. Table 1. TORQUE SPEED CURRENT POWER EFFICIENCY

Diffraction: Powder Method

2018-1-31 · Powder Diffraction File (PDF) 1962, the d-I''s, formulas, and PDF numbers were first keyboarded for a computer-readable database. 1969 -- the Joint Committee on Powder Diffraction Standards (JCPDS) was formed as a non-profit corporation to oversee the database By 1971 the Powder Diffraction File (PDF) contained 21 sets of data with about 21,500

Pump Sizing and Selection Made Easy

2018-1-1 · Pump Selection, Example 2. An additional pump selection problem is shown Example 2. For this example, consider a discharge line that is 50 ft schedule 40, 4-in. diameter, with two gate valves, 12 elbows, 1 expander (2–4 in.), a …

xample of Vacuum calculation

2018-3-27 · Selection of the mounting elements The size of the vacuumhose should match the suction padswhich are used. Forthe selection of the suitable tube dimensions see recommendationsunder Technical Data. Example: Forexampe, fromthe table with Technical Data we choose a TRN 8/6 hose in polyammide. Selection of vacuum hoses Calculation of the …

How should I calculate the transformation efficiency ...

FAQ: How should I calculate the transformation efficiency (C2992)? Transformation efficiency is defined as the number of colony forming units (cfu) which would be produced by transforming 1 µg of plasmid into a given volume of competent cells. The term is somewhat misleading in that 1 µg of plasmid is rarely actually transformed.

Standard Deviation Calculator

Standard deviation in statistics, typically denoted by σ, is a measure of variation or dispersion (refers to a distribution''s extent of stretching or squeezing) between values in a set of data. The lower the standard deviation, the closer the data points tend to be to the mean (or expected value), μ. Conversely, a higher standard deviation ...

How do I calculate encapsulation efficiency?

The encapsulation efficiency is calculated by several methods but the most reliable is BCA, if it''s about a protein so, this method gives you a concentration of protein in NPs. EE%= (Measurement ...

What is the most efficient concentration of G418 for ...

Normally, puromycin selection occurs quickly 2-3 days because your arrest translation which is much stronger effect than another kind of selection such as hygromycin B or G418 (neo).

PREMIUM EFFICIENCY MOTOR SELECTION AND …

2017-6-3 · PREMIUM EFFICIENCY MOTOR SELECTION AND APPLICATION GUIDE | i ACKNOWLEDGMENTS The Premium Efficiency Motor Selection and Application Guide and its companion publication, Continuous Energy Improvement in Motor-Driven Systems, have been developed by the U.S. Department of Energy (DOE) Office of Energy Efficiency and …

Powder Selection

Powder Selection - kwk

HVAC Right-Sizing Part 1: Calculating Loads

2013-12-9 · Building Energy Efficient Homes forAmerica (BeeHa) Building America Retrofit Alliance (BARA) ... calculation due to changing solar heat gains at various times of the day. ... Equipment selection and sizing 3. Duct and register sizing. We Just Covered Step 1 of 3.

Efficiency Ratios Formula | Step by Step Calculations

2021-9-24 · Explanation of Efficiency Ratios Formula #1 – Asset Turnover Ratio. In order to calculate the asset turnover ratio, the following steps should be undertaken: Step 1: Calculate the sales. Step 2: Calculate average total assets Total Assets Total Assets is the sum of a company''s current and noncurrent assets. Total assets also equals to the sum ...

Sintering in the Powder Metallurgy Process

Sintering in the Powder Metallurgy Process. Sintering is a heat treatment applied to a powder compact in order to impart strength and integrity. The temperature used for sintering is below the melting point of the major constituent of the Powder Metallurgy material. After compaction, neighbouring powder particles are held together by cold welds ...

High-efficiency selection of aptamers for bovine ...

2019-12-1 · The aptamer against bovine lactoferrin exhibits high-affinity and -specificity, and achieves BLF detection in milk powder. • The ssCE mode demonstrated high-efficiency selection with K d reaching at 0.19±0.04 µM by two rounds, similar to CZE mode. The comprehensive affinity analyses was performed regarding primer region, single base mutation, and molecular …

Basics of X-Ray Powder Diffraction

2012-4-18 · Our powder diffractometers typically use the Bragg-Brentano geometry. ωωω 2θ22θθ2θ • The incident angle, ω, is defined between the X-ray source and the sample. • The diffraction angle, 2θ, is defined between the incident beam and the detector. • The incident angle ω is always ½ of the detector angle 2θ .

Sintering in the Powder Metallurgy Process

Sintering in the Powder Metallurgy Process. Sintering is a heat treatment applied to a powder compact in order to impart strength and integrity. The temperature used for sintering is below the melting point of the major constituent of the Powder Metallurgy material. After compaction, neighbouring powder …

Motor Efficiency, Selection and Management

2017-3-24 · and selection of the right equipment, including eficient motors and, where appropriate, drives. To ensure that motor-driven systems continue to perform optimally over time, it is critical to develop and maintain a motor management plan.

Testing Methods & Standards for Measuring Powder …

Example calculation: Powder X has specific gravity of 1.6 Dry film thickness required is 2.0 mils Transfer efficiency of 60% (0.60) Cost of the powder is \$5.00/lb Actual Coverage Rate = 192.3/1.6/2.0 × 0.60 = 36.05 ft 2 /lb Cost per square foot = \$5.00/36.05 = \$0.14 per square foot of coverage by Powder X.

Dust Collection Systems: 10 Common ...

2019-4-17 · Here is a loading calculation example for a collector that is capturing 2 lb of dust/hr. This collection system provides 1000 CFM of air volume: 2 lb/hr * 7000 grains/lb = 14,000 grains/hr. 1000 CFM * 60 min/hr = 60,000 cu ft/hr. (14,000 grains/hr) / 60,000 cu ft/hr = 0.23 grains/cu ft. Overloading filters decreases system efficiency …

Basic Calculation of a Buck Converter''s Power Stage …

2015-8-17 · Inductor Selection η= efficiency of the converter, e.g., estimated 90% The efficiency is added to the duty cycle calculation, because the converter also has to deliver the energy dissipated. This calculation gives a more realistic duty cycle than just the formula without the efficiency factor.

Powder metallurgy – basics & applications

2021-8-27 · Powder metallurgy – basics & applications Powder metallurgy – science of producing metal powders and making finished /semifinished objects from mixed or alloyed powders with or without the addition of nonmetallic constituents Steps in powder metallurgy:Powder production, Compaction, Sintering, & Secondary operations Powder production:

How to Calculate Production Capacity of a Factory?

2018-9-10 · Answer: The line efficiency that we used here comes from the past data of the line performance. Line efficiency calculation method is shown in this post. SAM is the standard time of the style. Standard time will remain the same for a product. Garment SAM will not change whether the line work at 50% efficiency level or 80% efficiency.

How to Calculate Production Capacity of a Factory?

2018-9-10 · Answer: Good question. In the production capacity calculation formula, we are using product SAM to calculate the daily production capacity. Therefore, if you are adding finishing operation SAM, manual work (like marking, ironing) …

Basic Calculation of a Boost Converter''s Power Stage …

2014-1-8 · Basic Calculation of a Boost Converter''s Power Stage ... η= efficiency of the converter, e.g. estimated 80% ... 3 Inductor Selection Often data sheets give a range of recommended inductor values. If this is the case, it is recommended to choose an inductor from this range. The higher the inductor value, the higher is the maximum output

1. ENERGY PERFORMANCE ASSESSMENT OF BOILERS

2017-9-8 · 1.6.3 Boiler Efficiency by Direct Method: Calculation and Example Test Data and Calculation Water consumption and coal consumption were measured in a coal-fired boiler at hourly inter-vals. Weighed quantities of coal were fed to …