ACFM actual cubic feet per

ACFM = Actual cubic feet per minute D = Fan diameter, feet... 

The actual volumetric flowrate, usually in acfm (actual cubic feet per minute), is the volumetric flowrate based on actual operating conditions (temperature and pressure of the system). The standard volumetric flowrate, usually in scfm (standard cubic... 

An incinerator is burning a hazardous waste slurry using 50% excess air. The stack gas at 800°F has a flowrate of 10,000 acfm (actual cubic feet per minute) with a particulate mass flow of 20gr/min and a water content of 10% by volume. The maximum allowed outlet loading for particulates is 0.08 gr/dscf (grains per dry... 

In this example, one must first note that at the recommended level of I7D (0.4), a small amount of extra air (45 ACFM — actual cubic feet per minute) must be supplied to maintain the overall superficial gas velocity at the recommended level of 150ft/min. At L7D values above 0.4, the value of 1500 ACFM is too great to provide a superficial gas velocity of only 150 ft/ min because the calculated adsorber diameter is too small. 

The SCREEN model uses free format to read the numerical input data, with the exception of the exit velocity/flow rate option. The default choice for this input is stack gas exit velocity, which SCREEN will read as free format. However, if the user precedes the input with the characters VF= in columns 1-3, then SCREEN will interpret the input as flow rate in actual cubic feet per minute (ACFM). Alternatively, if the user inputs the characters VM= in columns 1-3, then SCREEN will interpret the... 

The air pollution control solutions that are available to control these emissions are normally dictated by the volume of air that is to be processed. The volume of air flow, measured in cubic feet per minute, is designated as ACFM for Actual Cubic Feet per Minute of SCFM where "S" stands for standard cubic feet per minute, at 70°F, sea level, and one atmosphere. 

Engineering Considerations To effect the good engineering design of an activated carbon adsorption system, it is first necessary to obtain information on the following the actual cubic feet per minute (ACFM) of air to be processed by the adsorber, the temperature of gas stream, the material(s) to be absorbed, the concentration of the material to be adsorbed, and if the intended application is air pollution control such as odor control - then the odor threshold of the material to be adsorbed. In addition, data is needed on the presence of other constituents in the gas stream, and whether or not solvent recovery is economical. 

Acfm means actual cubic feet per minute. It is the volume of gas flowing, and the value is not dependent on density. 

According to the vendor, the capital costs for the treatment system include a 200-actual cubic-feet-per-minute (ACFM) vacuum pump, two transfer pumps, a carbon steel knockout pot, and associated instrumentation and piping. Operation and maintenance costs for the system include estimates for additional granular activated carbon (GAC) units, liquid- and vapor-phase analysis, weekly monitoring, electricity, and routine maintenance. These costs vary, depending on the monitoring requirements, contaminant concentrations, and other variables (D13124Y, p. 492). 

Centrifugal compressors must operate on a curve, just like centrifugal pumps. A typical curve is shown in Fig. 28.3. The horizontal axis is actual cubic feet per minute (ACFM). This is analogous to GPM, used on the horizontal (x) axis of centrifugal pump curves. The vertical axis is H (poly tropic feet of head). This is analogous to the feet of head used on the vertical (y) axis of the centrifugal pump curve. 

Inlet waste gas flow rate, actual cubic feet per minute (acfm) 12,500... 

The ability of SCF to remove contaminants is directly related to the number of volume exchanges of SCF within the cleaning chamber and the amount of contaminant. Previous experiments in removal of damping fluid indicated that it would take approximately 3-4 hours at 3500 psi and 185°F with a flow of 1.0 Actual Cubic Feet per Minute (ACFM) to clean fill stand hardware. This was performed in the small (2.4 liter) chamber. Since the volume of the new chamber (14.9 liter) was much greater than the previous chamber, it was anticipated that... 

The equipment size factor for a fan is the actual cubic feet per minute, ACFM, entering the fan. Fans are usually driven by an electric motor with either a direct drive or a belt. Base... 

The base cost curves in Figure 16.7 for a CE cost index of 394 are given by the following equations, with Q in actual cubic feet per minute (ACFM) of gas entering the fan. 

The calculated quantity of trichloroethylene emitted from the cleaning chamber every 20 minutes is about 0.0936 pounds, which is an average rate of 0.281 pounds per hour, 1.06 actual cubic feet of trichloroethylene vapor per minute (ACFM), or 16.6 gallons of condensed liquid trichloroethylene per month. To reduce this volumetric flow of pure trichloroethylene vapor to a concentration of 10 ppm in air one would need an air flow of about 340 actual cubic feet (ACF), or about 16 times the volume of the work chamber. That s only a tiny flow rate of vapor (170ACFM = 340 ACF/... 

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