You must design a dust plant. If the grizzly area for which the plant is designed for is 2 x 3 m in size, how many dry filter bags would you require to adequately filter the air and re-introduce it into the fresh air? Filter bag air velocity is 0.1 m/s and the grizzly area air velocity is 0.5 m/s.
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- Using the data of Problem 6.1 design a shaker baghouae to filter 2000 m3/min of air that contains 1.50 g/m3 of limestone dust Assume that the cleaning time for one compartment is 3.0 minutes and that the available ∆Pm is 2000 Pa, In your design, specify the filtering velocity, the number of compartments, the cloth area per compartment, and the filtration time tf.ANSWER this, please.With the formula derived and the conditions applied in problem statement # 1, calculate for the heavier liquidoverflow leg, the diameter, and the volume of the tank in separating liquid B from liquid A having densities of 1278kg/m3 and 794 kg/m3, respectively. The volumetric flow rate of the mixture entering the tank is 30 m3/hr and the viscosity of the lighter liquid (continuous phase) is the same as the viscosity of water @ 35oC. Volume of heavier liquid is twice the volume of the lighter liquid and having a tank diameter to height as 1:2 ratio. Assume for 10% from the tank volume allotted for the vapor space having a pressure of 50 kPa. REFERENCE: (problem 1) Derive a formula to calculate for the height, ZC of the heavier liquid overflow leg in a continuous vertical cylindrical decanter. The pressure at the discharge point of the heavier liquid is given as 90% of the pressure on top of the fluid mixture. Express the height of the heavier liquid as ZB and the…The moisture removed from a material is 200 lb/hr and change of humidity ratio of air in the dryer is 105 grains/lbmd.a. Determine the fan capacity in cfm if specific volume of air entering is 38 ft3 /lb.
- need some help with this one. The water vapor pressure of ambient air is 19 mmHg, and the wind speed is 1.7 m/s. Calculate the maximum evaporative heat loss (Emax in watts). (Assume skin temperature is 35°C; vapor pressure at 35°C is 42 mmHg., and a standard worker) -53 O 232 O 232 O 30 O -30 O 53B- A continuous separating tank is to be designed to follow after a water washing plant for liquid oil. Estimate the necessary area for the tank if the oil, on leaving the washer is in the form of small spherical particles 5.1 * 105 m diameter, the feed concentration is 4 Kg water to 1 Kg oil, and the leaving water is effectively oil free. The mass rate of feed of solids is 200 Kg/h. Viscosity of water = 0.7*10³ N.s/m². Density of water = 1000 Kg/m³. Pol 894kg/m²A thin liquid film of ammonia (NH3), which has formed on the inner surface of a tube of diame D= 10 mm and length L = 1 m, is removed by passing dry air through the tube at a flow rate m = 3 x 104 kg/s. The tube and the air are at 25°C. a) Calculate the velocity, the Reynolds number Rep and Sherwood's number Sc. b) What is the average mass transfer coefficient hm? (Hint: Use Table 14-13)
- Calculate the height of chimney required in a boiler in which natural draught is 25 mm of water. The flue gases are at temperature of 600K , atmospheric air temperature is 25 C and 15 kg air per kg of fuel is required in boiler.Example 9-2: Determining particle removal efficiency in cyclones An air stream with flow rate of 7 m/s is passed through a cyclone of standard proportions. The diameter d the cyclone is 2.0 m, and the air temperature is 77'C. (a) Determine the removal efficiency for a particle with a density of 1.5 g/cm and diameter of 10 um. (b) Determine the collection efficiency based on the above if a bank of 64 cyclones with diameters of 24 cm are used instead of the single large unit.How is a lubricant drop be broken into finer droplets of a mist ?a. By increasing its kinetic energy by vibrating it at high frequencyb. By placing the drop into a zone of low pressure which is less than the internal pressure of the drop,generated by a venturi.c. By evaporating the drop into molecular form by reducing its pressure.d. By placing the drop into a highly turbulent zone such that a number of air jets blown onto it shearsit into fine droplets of a mist.
- A chromatographer fed up with waiting 36 minutes to accomplish a separation requiring 8000 plates, packs a new column to reduce separation time. She slashed the particle diameter by a factor of 3. She adjusted the flow rate to work at the same reduced velocity as before ( the h versus v curves for the two columns are the same) and chooses a column length to get the same number of plates. Comparing the new column to the old, by what factor will the following parameters change: a) plate height b) column length c) flow velocity d) pressure drop e) separation time? What is the new separation time?• Water evaporates from the surface of a pond and the vapour diffuses through the stagnant film of air of thickness 3 mm. Water temperature is 23°C and the air temperature is 27°C. Relative humidity of air is 65%. Average diffusivity is 0.2595 cm²/s. What is the average flux of evaporation? Antoine equation constants A=13.8573 B=5160.2What are the differences between evaporation and transpiration?