A dryer is to deliver 1000 kg/hr of cassava with 2% moisture and 20% moisture in the feed. Determine the mass of air required if change in humidity ratio is 0.0165.
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A dryer is to deliver 1000 kg/hr of cassava with 2% moisture and 20% moisture in the feed. Determine the mass of air required if change in humidity ratio is 0.0165.
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- Pls. Answer thank you! The moisture removed from a material is 200 lb/hr and change of humidity ratio in dryer is 0.015. Determine the fan capacity if specific volume of air entering is 38 ft3/lb.Hi please show working? Thankyou ! An air conditioner cools humid air Temperature 1 =25 celcius Temperature 2 = 10 celcius Relative humidity 1 = 70% Determine the final relative humidity (2) and calculate: 1) the energy removed 2) the water mass extracted from the airAir enters a humidifier at 20.25 C and 30% RH. The air is at a constant pressure of 101.325 kPa. If the air leaves the humidifier at 80% RH, what is: The exit dry-bulb temperature of the air in C The saturation effectiveness in % of the humidifier
- 2. A spray drier is used to dry skim milk to a final moisture content of 5.00%. The air entering the drier is 110°C, is heated from ambient air at 26.0°C and 80.0% RH. The flow rate of hot air entering the dryer is 1000 m³ dry air/min. The skim milk enters the dryer at 45.0°C with 55.0% moisture content and the exit temperature is 55.0°C. The specific heat of product solids is 2.00 kJ/kg dry solid-°C. The heated air leaves the system at 5.00°C above the product temperature. Determine: a. the %RH of air leaving the dryer; and b. the production rate of the moist product leaving the dryer. (Note: Obtain necessary properties of air using the psychrometric chart given to you; All moisture content is on wet basis)Exercise 17.5 Air is being drawn over the cold surface of the cooling coil of an air conditioning unit. If 10 m/min enters the air conditioner, calculate the mass flow rate of the condensed moisture, given that the air enters at 20°C and 70% relative humid- ity and exits at 12°C dry bulb temperature and 90% relative humidity. Calcu- late the refrigeration capacity of the coil in W and Btu/h. Solution Step 1 Draw the process diagram: ma ma W; H. Hwhich humidity would have a lower terminal velocity, 5% 0r 80%?
- Air at a dry ball temperature of 90 danC and 4% RH is passed over the cooling coil so that the air dry bulb temperature becomes 45˚C. how much heat is released from the air in the process? = (Kj / kg)Define absolute humidity and relative humidity. When an air conditioner is operated insummer, lots of water needs to be drained out from it. Briefly explain this situation inrelation to psychrometry.The air, supplied at the rate of 249.57 gal per second to refrigerated coil, has a saturation humidity of 280 grains water per lb dry air and 13.5% RH. The estimated water flow rate of air entering the refrigerated coil in lb/min is A. 2.32B. 4.71C. 6.25D. 10.31
- PLEASE DO NOT USE PSYCHROMETRIC CHART. THANK YOU In the diagram below inlet air is drawn over a pool of liquid water in a steady-state, steady-flow isobaric process. Evaporation on the pool resultsin saturated air at the exit. The pool of liquid water is assumed to be at the same temperature as the exitair. Discharge fans at the exit provide a volumetric flow rate of 800,000 ft3/min. Problem #2: Assume that the R134a chiller is turned off such that Qout = 0, but the evaporative coolersystem continues to operate. Determine:a) The exit temperature, T2 (°F)b) The mass flow rate dry air through the system (lbm/sec).c) The rate of liquid water resupply required for continuous operation (lbm/hour).How can I calculate the pressure 2 of a vapor compression refrigeration system, if in state one my pressure is 0.101. How can I calculate the increase in pressure in state 2? the system is located in a zone at 24C with a humidity of 90%. My refrigerant to use is 134aA dryer is to deliver 1,000 kg/h of palay with final moisture content of 10%. The initial moisture content in the feed is 15% at atmospheric condition with 30 oC dry bulb and 20 oC wet bulb. The dryer is maintained at 45oC while the relative humidity of the hot humid air from the dryer is 80%. If the steam pressure supplied to the heater is 2 MPa, determine the following: a.) Palay supplied to the dryer in kg/h. b.) Temperature of the hot humid air from the dryer in oC. c.) Air supplied to dryer in cu m/h. d.) Heat supplied by the heater in k W. e.) Steam supplied to heater in kg/h.