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)

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)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Related questions

Q: A vapour compression refrigeration plant using R12 has saturation temperatures in the evaporator and…

Q: 5) Outdoor air enters an air-conditioning system at 10°C and 70% RH at a steady rate of 35 m³/min,…

Q: Chesterfield currently uses 11,400 m³/d (average flow) of water which is drawn from a storage…

A: Given data: Average flow per day = 11400 m3 Minimum flow during winter = 0.25 x Average flow Peak…

Q: The following properties for Freon-12 were obtained. At -22 °C b (superheat) = 353 KJ/kg ha = 343…

A: The refrigeration effect is the amount of heat that is required to extract from the storage space in…

Q: Consider an ideal Hampson-Linde cycle in which no heat is lost to the environment. Use the data in…

A: The Linde-Hampson cycle, is a type of refrigeration cycle that allows gases to reach very low…

Q: A heat exchanger is used to heat air. The air enters at 300 K with a flow rate of 5 kg/s. The air is…

A: Given: Inlet temperature of air T1=300KMass flow rate of air m1=5kg/sPressure of steam…

Q: How does the air flow rate (controlled by the orifice differential pressure) affect the make up…

A: This is due to the process of evaporation. Even in the controlled atmosphere a small amount of water…

Q: Air with a density of 0.45 kg⁄m3 enters an experimental jet engine at rate of 180 m/s. The inlet…

A: This problem is related to fluid mechanics. Fluid mechanics is the subject of mechanical engineering…

Q: ese refrigerants (insert number) with their properties listed below. (1) R-12 (2) R -134A (3)…

A: (1) R-12..............On its way out due to high GWP (2) R -134A................Banned by Montreal…

Q: Steam is used to pre-heat an air stream before it is fed into a combustion chamber. Steam enters the…

Q: How do the different zones of gas turbine combustor affect the formation of pollutants?

A: To find: The generation of pollutants is influenced by the various zones in gas turbine combustor.

Q: Air at a dry ball temperature of 90 danC and 4% RH is passed over the cooling coil so that the air…

A: Given data as per the question Dry bulb temperature of air =900 c Relative humidity =4% dry bulb…

Concept explainers

Strengthening of Alloys

Strengthening of the alloys is required as metals become weak due to various lattice defects, metal bonding phenomena. The strength of the metals is not enough for any mechanical work. The internal dislocations of any metals arise due to forming processes. Due to the movement of these dislocations, the metals are plastically deformed.

Question

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)

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

A gas turbine unit consists of a compressor, turbine and combustion chamber The compressor and turbine are mechanically coupled. The pressure ratio of the unit is 5.5:1 over a temperature range of 20°C to 810°C. If the isentropic efficiency of the compressor and turbine is 85% and the calorific value of the fuel is 42.5MJ/kg. Calculate: (a). the air-fuel ratio (b). the thermal efficiency 35.2
Steam is to be condensed by direct injection of cold water. The steam enters the condenser at the rate of (450 kg/hr) with dryness fraction of (0.9) and pressure (1 bar). The estimated heat losses from the condenser to the surroundings is (8500 kJ/hr). If cold water enters at (15"C) and the mixture of condensate and cooling water is to leave at (95"C). Determine the required flow of cooling water.
Question attached
The LiBr-water absorption cycle shown in the Fig. operates at the following temperatures: generator, 105 C; condenser, 35 C; evaporator, 5 C; and absorber, 30°C. The flow rate of solution delivered by the pump is 0.4 kg/s. (a) What are the mass flow rates of solution returning from the generator to the absorber and of the refrigerant? (b) What are the rates of heat transfer at each of the components, and the COP? High-pressure vapor Solution 105 Generator Heat Pump Monog Heat Condenser Throttling Expansion valve valve Low-pressure vapor Heat Absorber Evaporator Heat
Do not type
Consider the extraction of energy from the tail gases from a nitric acid adsorption tower, such as that described in Chapter 4, Example 4.4. Gas composition, kmol/h: 0₂ N₂ NO NO₂ H₂O 371.5 10,014.7 21.9 Trace saturated at 250°C If the gases leave the tower at 6 atm, 25°C, and are expanded to, say, 1.5 atm, calculate the turbine exit gas temperatures without preheat, and if the gases are preheated to 400°C with the reactor off-gas. Also, estimate the power recovered from the preheated gases.
In air handling unit, the 0.8 kg/s of the outlet air at 40C db, 28C wb mix with 2.4 kg/s of the return air at 24C db, 50% RH. The mixture passes through the water cooling coil have surface temperature ADP = 8C. Assume the contact factor of the cooling coil is 80%. Draw the processes on the psychrometric chart, then find: 1. Cooling coil capacity. 2. Quantity of the removed moisture.
Wet-mixture exhaust from a turbine at 7 kPaa at a rate of 75 kg/s enters a condenser with a total surface area of 2950 m2. The mixture has a moisture content of 10% and leaves the condenser as saturated liquid. The cooling water volumetric flow rate is 4.413 m3 /s and enters at 20 oC. Find the LMTD and overall heat transfer coefficient. NOTE: AT 7 kPaa, tsat = 39 oC, hf = 163.4 kJ/kg, hfg = 2572.5 kJ/kg (four decimal places for final answer)
าา 3.15.) In air conditioning unit, 71,000 cfm at 80'F dry bulb 60% th and standard atmospheric pressure, enter the unit. The air leaves the wait at 57°F dry bulb and 90% relative humidity. Calculate the following a.) Cooling capacity of the air conditioning unit, in Btu/h 6.) rate of water removal from the unit. (.) sensible heat load on the conditioner, in Btu/h di) latent heat load on the conditioning in Blu/h e.) The dew point of the air leaving the conditioner.
no typing please handwright
9. A vapour compression plant is powered by a 2kW motor and circulates R12 at 5kg/min. The R12 leaves the condenser at its saturation temperature with a specific enthalpy of 74.59kJ/kg and leaves the evaporated dry saturated with a specific enthalpy of 187.53kJ/kg. Calculate: (a). the dryness fraction at the evaporator inlet (b). refrigeration effect (c). coefficient of performance
A cooperative located on the outskirts of Lusaka, employs a solar dryer having an effective collector area of 15m² to dry 100kg of fresh fruit initially having a moisture content of 80% (wet basis) to a moisture content of 5% (wet hasis), over a period of 3 days. A fan fitted on the dryer maintains an airflow of 0.6m. Calculate the system drying efficiency and Pick up efficiency of the dryer when it operates under the following climatic conditions: Total daily insolation incident upon collector 5.6kWh/m² per 12-hour-day Ambient air mean daily temperature-25°C Ambient air mean daily relative humidity-70% Mean temperature of the air entering the drying chamber-40°C Air leaves the drying chamber 100% saturated. Take Latent heat of vaporisation of water 2320kJkg Air density 2.28kgw