Q1. The cooling water from the condenser of a power plant enters a wet coolingtower at (35° C) at a rate of 85 kg/s. The water is cooled to 28°C in the coolingtower by air that enters the tower at 1 atm, 23°C, and 40 percent relative humidityand leaves at 30°C and 80 percent relative humidity. Neglecting the power input tothe fan, determine (a) the volume flow rate of air into the cooling tower and (b) themass flow rate of the required makeup water.(c) the mass flow rate of the waterthat leaves the wet cooling tower. (d) the water that leaves the cooling tower is lessthan the inlet water. Discuss this issue. (e) in your opinion if the relative humidityof the air that inters the cooling tower is less than 40 percent would this increase ordecrease the value of the make up water.Q2. The schematic of a single-flash geothermal power plant with state numbers isgiven below. Geothermal resource exists as saturated liquid at (260.5) °C. Thegeothermal liquid is withdrawn from the production well at a rate of 222 kg/s, andis flashed to a pressure of 550 kPa by an essentially isenthalpic flashing processwhere the resulting vapor is separated from the liquid in a separator and directed tothe turbine which is working ideally. The steam leaves the turbine at 10 kPa with amoisture content of 13 percent and enters the condenser where it is condensed androuted to a reinjection well along with the liquid coming off the separator. Drawthe T.S diagram and Determine (a) the mass flow rate of steam through the turbine,(b) the power output of the turbine. (c) the thermal efficiency of the cycle(d) why the efficiency is so low and, in your opinion, how can we rise theefficiency.

Q1. The cooling water from the condenser of a power plant enters a wet cooling tower at (35° C) at a rate of 85 kg/s. The water is cooled to 28°C in the cooling tower by air that enters the tower at 1 atm, 23°C, and 40 percent relative humidity and leaves at 30°C and 80 percent relative humidity. Neglecting the power input to the fan, determine (a) the volume flow rate of air into the cooling tower and (b) the mass flow rate of the required makeup water.(c) the mass flow rate of the water that leaves the wet cooling tower. (d) the water that leaves the cooling tower is less than the inlet water. Discuss this issue. (e) in your opinion if the relative humidity of the air that inters the cooling tower is less than 40 percent would this increase or decrease the value of the make up water.

Q1. The cooling water from the condenser of a power plant enters a wet cooling tower at (35° C) at a rate of 85 kg/s. The water is cooled to 28°C in the cooling tower by air that enters the tower at 1 atm, 23°C, and 40 percent relative humidity and leaves at 30°C and 80 percent relative humidity. Neglecting the power input to the fan, determine (a) the volume flow rate of air into the cooling tower and (b) the mass flow rate of the required makeup water.(c) the mass flow rate of the water that leaves the wet cooling tower. (d) the water that leaves the cooling tower is less than the inlet water. Discuss this issue. (e) in your opinion if the relative humidity of the air that inters the cooling tower is less than 40 percent would this increase or decrease the value of the make up water.

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: Air initially at 101.325 kPa, 30°C db and 40% relative humidity undergoes an adiabatic saturation…

A: The increase in the water content of the moist air is m.water = 0.246 kg/s.

Q: A summer air conditioning system (schematic shown below) consisting of a cooling coil and a reheat…

Q: Water needed to be cooled from 38°C to 33°C in a cooling tower with water flowrate of 110 kg/s.…

A: Given Mass flow rate, m = 110 kg/s Inlet temperature of water, T1 = 38oC…

Q: Moist air initially at 101 kPa, 30°C db, 30% relative humidity undergoes a sensible cooling process…

Q: An air conditioning unit supplies cold air to a room at 22°C dry bulb and 70% relative humidity.…

Q: ow much heat and moisture must be added to 8 cubic meter per minute of air at 17 C dry bulb and 35%…

A: To Find : heat and moisture must be added Given : The volumetric flow rate of air is The dry bulb…

Q: If superheated humid air is cooled at 1 atm, the system follows a horizontal path to the left on the…

A: All the air conditioning processes can be easily drawn on the psychrometric chart. On the x-axis of…

Q: A steam turbine operates with 5 kg / s of steam from 4 MPa and 500 degrees Celsius to 50 kPa. If the…

A: Given:mass flow rate, m˙= 5 kg/sPressure, P1=4 MPaTemperature, T1= 500o Cfinal pressure, P2=50…

Q: An industrial dehumidifier accepts 50 kmol/hour of moist air with a dewpoint of 20 degrees Celsius.…

A: From psychrometric chart we have :Inlet air humidity, Y1 = 0.015 Kg water /Kg dry airOutlet air…

Q: In an air conditioning system, the inside and outside conditions are dry bulb temperature 24°C,…

Q: A stream of outdoor air is mixed with a stream of return air in an air conditioning system that…

A: Given data as per questionBarometric pressure=101.325 kPaFor Outdoor air, stream 1For return air ,…

Q: A- Answer the following: 1- How does humidity affect human comfort? 2- Consider the adiabatic mixing…

A: “Since you have posted multiple questions, we will provide the solution only to the first question…

Q: The cooling water entering the factory has a temperature of 28 C and when it leaves 45 C. This used…

A: A cooling tower is a type of heat exchanger in which air and water are brought into direct…

Q: The air in a room (20.7°C and 30% humidity) with a volume of 96.6 m3 must be replaced every 5…

Q: Two streams of air, (A: Absolute humidity = 24 g water/ kg dry air; RH= 60% and B: T db =19 °C & RH…

Q: In an air conditioning system, the inside and outside conditions are dry bulb temperature 24°C,…

A: Given: Inside condition tdbi=24oC Relative humidity(ϕi)=50% Outside Condition tdb0=35oCtwbt=22oC…

Q: Air enters a natural draught cooling tower at 1.013 bar and 13 °C and relative humidity 50%. Water…

A: Given:

Q: A summer air conditioning system, consisting of a cooling coil and a reheat coil, supplies air to a…

A: Dry bulb, due point, and wet bulb temperature: Dry bulb temperature is a normal temperature…

Q: An air conditioning plant supplies air to a room at a rate of 1.26 kg/s, the supply air being made…

A: (a)(b)Using point O and point I enthalpy values,Enthalpy at point m (mixing point ) Also, W at point…

Q: Two air streams at standard atmosphere are mixed adiabatically with the first air stream at 15°C db,…

A: To find: The dry bulb temperature of the mixed air flow. Given: The dry bulb temperature of first…

Q: In a simple heating process, air enters a duct at a temperature of 10℃, and a relative humidity of…

A: Air conditioning: It is process in which air gets heated or cooled to maintain its properties to…

Q: ir enters a cooling section at 97 kPa, 35°C, and 30 percent relative humidity m'/min, where it is…

Q: An auditorium seating 1800 people in three consecutive sitting for 6 hours, is to be maintained at…

A: An auditorium seating 1800 people in three consecutive sitting for 6 hours, is to be maintained at…

Q: During an air- conditioning process, 1000 ft/ min of conditioned air at 70°F and 35% relative…

Q: Q: 7200 mhr of moist air at 40°C DBT, 22 °C WBT and 95 kpa barometric pressure, flows through on an…

A: DBT1= 40οC,WBT1= 22οC, Patm= 95KPa, DBT2 = 28οC, WBT2= 22οCPv1= Psi-patma(DBT1-WBT1) =7.385 -…

Q: In an air conditioning system, the inside and outside conditions are dry bulb temperature 24°C,…

Q: For summer air conditioner application of a room; The sensible heat gain of the room is 13kW, the…

A: Given:The sensible heat gain of the room, Q˙s=13 kWThe latent heat gain of the room, Q˙L=3 kWDesign…

Q: carefully. Don't miss any calculations. The recycled duct air in a centralized air conditioning…

A: The recycled duct air in a centralized air conditioning system takes in air at a rate of 60 m3/min…

Q: A refrigerant of a certain thermodynamic cycle at a point during the evaporation process where its…

A: Given data:

Question

Q1. The cooling water from the condenser of a power plant enters a wet cooling
tower at (35° C) at a rate of 85 kg/s. The water is cooled to 28°C in the cooling
tower by air that enters the tower at 1 atm, 23°C, and 40 percent relative humidity
and leaves at 30°C and 80 percent relative humidity. Neglecting the power input to
the fan, determine (a) the volume flow rate of air into the cooling tower and (b) the
mass flow rate of the required makeup water.(c) the mass flow rate of the water
that leaves the wet cooling tower. (d) the water that leaves the cooling tower is less
than the inlet water. Discuss this issue. (e) in your opinion if the relative humidity
of the air that inters the cooling tower is less than 40 percent would this increase or
decrease the value of the make up water.
Q2. The schematic of a single-flash geothermal power plant with state numbers is
given below. Geothermal resource exists as saturated liquid at (260.5) °C. The
geothermal liquid is withdrawn from the production well at a rate of 222 kg/s, and
is flashed to a pressure of 550 kPa by an essentially isenthalpic flashing process
where the resulting vapor is separated from the liquid in a separator and directed to
the turbine which is working ideally. The steam leaves the turbine at 10 kPa with a
moisture content of 13 percent and enters the condenser where it is condensed and
routed to a reinjection well along with the liquid coming off the separator. Draw
the T.S diagram and Determine (a) the mass flow rate of steam through the turbine,
(b) the power output of the turbine. (c) the thermal efficiency of the cycle
(d) why the efficiency is so low and, in your opinion, how can we rise the
efficiency.

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

Step 2

Step 3

Step 4

Step 5

Step 6

Step 7

Trending now

This is a popular solution!

Step by step

Solved in 7 steps with 1 images

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

Q 6: The air in a room has a pressure of 101.3 kPa and a dry bulb temperature of 24°C, with a wet bulb temperature of 17°C. Using the psychrometric chart determine the humidity ratio, the enthalpy, the relative humidity, the dew point temperature, and the specific volume of the humid air. (Ans : 0.0094 kgv/kgda, 47.6 kJ/kgda, 50%, 12.9°C, 0.854 m/kgda) 3
Outdoor air at 35°C dry-bulb and 19°C dewpoint temperatures are to be mixed with room air at 26°C dry-bulb temperature and specific humidity of 0.0105 kgv/kga. The mass of outdoor air is one-third of the mass of the mixture. Find the following properties of the mixed air: Dry-bulb temperature Specific humidity Enthalpy Relative humidity Dewpoint temperature Specific volume
Please answer and will surely give an upvote. Thank you. 8. 1.5 m3/s of moist air at a state of 28℃ DB, 21℃ WB, and 101.325 kPa flows across a cooler coil and leaves at 12.5℃ DB and 0.0083 kg/kg d.a. Determine the following: a. The apparatus dew-point temperature in ℃ using the Psychrometric chart. b. The By-Pass factor in percentile (%) c. The cooling load of the process in kilowatts (kW)
Air enters a humidifier at 34.25°C and 30% RH. If the air leaves the humidifier at 70% RH. Determine: The exit dry-bulb temperature of the air in °C.The saturation effectiveness in %.
In an air conditioning system 30 emm of fresh out door air is introduced at 43°C DBT and 30% RH. The remaining air is recirculated from the room maintained at 25°C DBT and 50% RH. The bypass factor of cooling coil is 0.15 and apparatus dew point Is 11.8°C, RSH 100 kW and RLH 15 kW. Determine: (1) Humidity ratios for outdoor and Room conditions. (2) OASH & OALH (3) ERSH and ERLH (iv) Supply air temperature (v) Supply air volume flow rate using ERSH (vi) Temperature at inlet to cooling coil by assuming density of niside and outside air sanie Given that saturation pressures of water at 25°C and 43C are 3.1693 KP and 8.6459 KPa respectively. Show the process on psychrometric chart standard atmospheric pressure=1.01325 bar.
Please assist with this Thermodynamics question. It's urgent.Thanks in advance
How much heat and moisture must be added to 4 cubic meter per minute of air at 13 C dry bulb and 31% relative humidity to raise it to 36 C and 41% relative humidity? Show the psychometric chart diagram on your paper.
The reading taken in a room from sling psychrometer gave a dry and wet bulb temperature of 25°C and 19.7°C respectively. Using psychrometric equation and psychrometric chart, determine: a. specific humidity b. relative humidity c. dew point temperature d. specific volume e. enthalpy
"For an air-water system at a given moisture content, the temperature decreases as the humidity increases."Is this statement true or false? Shouldn't it be relative humidity?