Weight rating

Light-duty (2,700- -3,900 kggross vehicle weight rating) trucks ... 

Test weight = (gross vehicle weight rating + crub weight)/2. 

The Reynolds number of the condensate film (falling film) is 4r/ I, where F is the weight rate of flow (loading rate) of condensate per unit perimeter kg/(s m) [lb/(h ft)]. The thickness of the condensate film for Reynolds number less than 2100 is (SflF/p g). ... 

The practical working equation for weight rate of discharge, adoptea by the ASME Research Committee on Fluid Meters for use with either gases or liquids, is... 

A measure of self-compensation, with respect to weight rate of flow, for fluid-density changes can be introduced through the use of a float with a density twice that of the fluid being metered, in which case an increase of 10 percent in p will produce a decrease of only 0.5 percent in w for the same reading. The extent of immunity to changes in fluid viscosity depends upon the shape of the float. 

Kj= thermal conductivity of gas film surrounding the droplet, Btu/(h ft )(°F ft), evaluated at the average between diyer gas and drop temperature V = volume of diyer chamber, rP At = temperature driving force (under terminal conditions described above), °F D, = maximum drop diameter, ft to, = weight rate of liquid flow, Ib/h p, = density of hquid, Ib/ft ... 

NORMAL LIQUID FROM Weight Rate, kg/h Density, kg/m ... 

L = total heated or cooled length of heat transfer path, ft w = weight rate of fluid flow per tube, Ib/hr p, = viscosity of fluid, lb/ (hr) (ft)... 

If a compressor is rated as having a volumetric flow capability of q. (scfm) and is to be used at surface location of 6,000 ft, then the compressor still has the capability of its rated volumetric flow rate, but it is now written as q. (actual cfm). Thus the actual weight rate of flow through the compressor w(lb/min), will be (see Table 3-28)... 

From Equation 4-130 the weight rate of flow through the system is... 

F = (H+ cosor) (wVe/g) + (Pe-P0)Ae where oc = half of the divergence angle of the nozzle, w - weight rate of proplnt flow, g = acceleration of gravity, Ve = exit flow velocity, Pe = nozzle exit pressure, PQ = external atm pressure, and Ae = cross section at nozzle exit plane. An effective exhaust velocity is defined by... 

The specific impulse is the thrust per unit weight rate of flow and so,... 

Parameter assessed Risk Value Weighting Rating... 

Table 20-24 compares properties of commonly used polyethersulfone (PES) or regenerated cellulose membranes. Membrane selection is based on experience with vendors, molecular weight rating for high... 

In optimization using a modular process simulator, certain restrictions apply on the choice of decision variables. For example, if the location of column feeds, draws, and heat exchangers are selected as decision variables, the rate or heat duty cannot also be selected. For an isothermal flash both the temperatures and pressure may be optimized, but for an adiabatic flash, on the other hand, the temperature is calculated in a module and only the pressure can be optimized. You also have to take care that the decision (optimization) variables in one unit are not varied by another unit. In some instances, you can make alternative specifications of the decision variables that result in the same optimal solution, but require substantially different computation time. For example, the simplest specification for a splitter would be a molar rate or ratio. A specification of the weight rate of a component in an exit flow stream from the splitter increases the computation time but yields the same solution. 

In these equations, C is the humidifier solids concentration in ppm, Q is the total air-conditioned flow rate in CFM, F is the total, single path penetration efficiency of the air-handling equipment, p is the density of water (= Igm/cm ), GPM is the humidifier flow rate in gallons per minute, N is the number of humidifier nozzles or heads, W is the weight rate in pounds per hour emitted by each humidifier unit, and x, as above in Equation 3, is the humidifier on-time fraction. 

Applied Pressure P / sq. in. from weight rate to volume rate thru specific gravity at test temperature... 

Hydraulic horsepower is obtained by multiplying the weight rate of flow by the head difference across the pump and converting to horsepower. For example, HHP = (gpm)(psi)/1714 = (gpm)(sp gr)(ft)/3960. 

Figure 18.5. Entrainment from sieve trays in the units mols liquid entrained/mol of liquid downflow LM, is the weight rate of flow of liquid and VMv is the weight rate of flow of vapor. The flooding correlation is Figure 13.32(b). [Fair and Matthews, Pet. Refiner 37(4), 153 (195S)].

The product x m is equal to W /M/ where W/ is the weight rate of fuel flow and Mj is the molecular weight. The concentrations may be expressed as the mole fraction times the molar density or... 

The equation for generalized fluidization, Eq. (3.5), can be rewritten in terms more adapted to the practitioner—that is, solids and fluid at their respective weight rates, S and L, added to the fluidized leacher/washer having a cross-sectional area of A ... 

The significance of eqn. (19) is understood more easily by dividing both numerator and denominator of the right-hand side by (Vsoi + V8Ur). Comparison with eqn. (18) then shows that the appropriate rate in the presence of a catalyst is the sum of the volume-weighted rates in the two phases (i.e. in the bulk solution and in the surface layer). Similarly, the appropriate overall concentration has become the sum of the volume-weighted overall concentrations. This is equal to the global concentration of the system as a whole, (c0)sy8. 

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