complete solution pls 20. Using the fundamental equations of moist air processes, determine the relative humidity ofmoist air at dry bulb temperature of 280C and 240C wet bulb temperature.Answer:relative humidity %21. Using the fundamental equations of moist air processes, determine the specific volume ofmoist air at dry bulb temperature of 30oC and 250C wet bulb temperature.Answer:specific volume m3/ kg d.a.22. Using the fundamental equations of moist air processes, calculate the enthalpy of moist air atdry bulb temperature of 800F and 700F wet bulb temperature.Answer:Lenthalpy Btu/lb d.a.

We are suppose to solve only one question. Please post other question as a separate question.

Answered: 20. Using the fundamental equations of…

20. Using the fundamental equations of moist air processes, determine the relative humidity of moist air at dry bulb temperature of 280C and 240C wet bulb temperature. Answer: relative humidity %

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter35: Comfort And Psychrometrics

Section: Chapter Questions

Problem 3RQ: Lower room temperatures can be offset in winter by A. lowering the relative humidity. B. being very...

See similar textbooks

Related questions

Q: Air at a dry bulb temperature of 20oC and relative humidity of 80% is to be heated and humidified to…

Q: Calculate the humidity ratio, enthalpy, and spe- cific volume for saturated air at 30°F (-1°C) and…

A: Air conditioning is the process in which air is prepared by using controlling ventilation,…

Q: For Questions 6 and 7 The dry-bulb temperature and wet-bulb temperature of a sample of air are 23°C…

Q: Air enters an air conditioning system at 78 kPa, 28°C, and relative humidity 31% at a rate of 4.2…

Q: 1. Moist air exits at a condition of 100 F dry-bulb temperature, 65 F thermodynamic wet bulb…

A: Note: As per our guidelines we are supposed to answer only the first 3 sub-parts. Kindly repost…

Q: Using a psychometric diagram, describe the heating and humidification process from the following…

Q: 1. Water at 30 °C flows into a cooling tower at the rate of 1.15 kg per kg air. Air enters the tower…

Q: Question 2 Two airstreams are steadily mixed adiabatically. The first stream enters with a…

Q: Air enters an evaporative cooler at 1 atm, 36 °C and 20 % relative humidity at a rate of 10 m³/min…

Q: Moist air at 32∘Cdb and relative humidity of 60% enter a refrigeration system with a flow rate of 90…

A: Given Data State 1: 32∘C db and relative humidity of 60% State 2: Saturated air ,15∘Cdb

Q: The temperature of the air-vapor mixture is at 30.5°C and it has a relative humidity of 50% when the…

Q: During an air-conditioning process, 910 ft3 /min of conditioned air at 64 F and 33 percent relative…

A: Giveninlet temp T1=64Fϕ1=33%

Q: Using the psychrometric charts (no need to attach the chart) solve this question: The air in a room…

A: Given: P = 1 atm T = 32 oC RH = 20% Using Psychrometric Chart we have to find the following…

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: Moist air at 35 °C and 70% relative humidity, passing through an evaporator of a refrigeration…

A: It is given that the air at a dry bulb temperature of 35 degrees passes over a refrigeration system.…

Q: 1 atrn, determine the specific humidity, the relative humidity, and dry bulb temperature and volume…

A: Given: T1=20°Cv1=70 m3/minφ=100%T2=35°Cv2=30 m3/minφ=50%P1= 1 atmTo determine:Specific hmidity of…

Q: At 1 atm, 27°C, and 50% relative humidity, atmospheric air from the inside of a car enters the…

Q: f. A single-family detached residence of moderate construction has a total sensible load of 53,300…

A: Given: The sensible load, QL = 53,300 Btu/hr The humidity ratio, w = 0.021 lb of vapour/lb of dry…

Q: 1. A tank contains 21 kg of dry air and 0.3 kg of water vapor at 30°C and 100 kPa total pressure.…

Q: . On a summer day, the pressure is 1 atm, the temperature is 32°C, and the relative humidity is 95…

A: Given Data P=1atm T1=32C Relative humidity, RH=0.95 From the charts, h1=106.5KJ/kg Humidity ratio,…

Q: 5. On a summer day, the pressure is 1 atm, the temperature is 32°C, and the relative humidity is 95…

Q: What are the dew point temperature, specific volume, enthalpy and absolute humidity of air at 30°C…

Q: An air-conditioning system operates at a total pressure of one atmosphere and consists of a heating…

Q: On a summer day, the pressure is 1 atm, the temperature is 32°C, and the relative humidity is 95…

Q: 4. An air-conditioning system operates at a total pressure of 1 atm and consists of a heating…

A: An air conditioner takes the warm air from a room, extracts its heat with the help of refrigerant…

Q: Q1. The cooling water from the condenser of a power plant enters a wet cooling tower at (35° C) at a…

A: 1.

Q: air flowing at 2 kg / s has a dry bulb temperature of 55˚C and a wet bulb temperature of 25˚C, mix…

A: m1˙=2kgsecDBT1=55°C ,WBT1=25°Cm˙2=3 kgsec DBT2=25°Cφ=50%Consevation of mass m˙1+m˙2=m˙3…

Q: what is the relationship and formula of relative humidity and temperature?

A: to define relationship and formula of relative humidity and temperature

Q: During an air-conditioning process, 900 ft3 /min of conditioned air at 65OF and 30 percent relative…

A: Given data: T1=65°Fϕ1=30%T2=80°Fϕ2=90% Need to determine the temperature, the specific humidity and…

Q: 5. On a summer day, the pressure is 1 atm, the temperature is 32°C, and the relative humidity is 95…

A: Solution is given below.

Q: Two humid airstreams are adiabatically mixed at 1 atm pressure to form a third stream. The first…

A: Refer “psychometric chart at 1 atm total pressure”, for a dry bulb temperature of 100 degree…

Q: Consider a room that contains air at 1 atm, 35°C, and 40 percent relative humidity. Using the…

Q: NOTE: This is a multi-part question, Once an answer is submitted, you will be unable to return to…

Q: Calculate (a) the specific volume, (b) Enthalpl, and (e) the absolute humidity of the air at 45 ° C…

Q: 2. Air flowing at 2 kg / s has a dry ball temperature of 60 ° C and a wet bulb temperature of 30 °…

A: For air 1, ma1=2kg/s=0.162m3/sva1=0.162m3/sTdb=60°CTwb=30°C for air stream 2,…

Q: Air enters a cooling tower at a rate of 1100 cubic meters per minute, at 15°C and 65% relative…

A: According to the problem, air enters the tower at 65% relative humidity at 15oC, and leaves the…

Q: An air-water vapor sample has a dew point temperature and a wet bulb temperature of 22°C and 30 °C…

A: The dry-bulb temperature (DBT) is the temperature of air measured by a thermometer freely exposed to…

Q: If moist air has a saturation humidity ratio of 0.016872 kg v/kg da at a pressure of 1.2 bar, what…

Q: Which of the following is true for the experiment? a. drag force exerted increases b. sphere never…

A: solution 3 - Correct option is (c)

Q: 14–15 A tank contains 21 kg of dry air and 0.3 kg of water vapor at 30°C and 100 kPa total pressure.…

Q: Question 3 Two humid air streams are adiabatically mixed at 1.5 atm pressure to form a third stream.…

Q: Using the Psychrometric chart, Fig. A-9, determine the relative humidity, the humidity ratio, and…

A: Plot the position of dry bulb temperature and wet bulb temperature on your psychrometric chart.

Q: room contains air at 30 degrees * C and a total pressure of 96.0 kPa with a relative humidity of 75…

A: Given Total pressure P=96 kPa Temperature T=30 degree C Relative humidity at state 1, ɸ(1)=0.75

Q: An air-conditioning system operates at a total pressure of 1 atm and consists of a heating section…

Q: 3. Air enters a window air conditioner at 1 atm, 30 C, and 80 percent relative humidity at a rate of…

A: Solution: Assumptions: Since this is a steady flow process, therefore the mass flow rate of dry…

Q: Consider 2000 ft3 of an air–water vapor mixture at 14.7 lbf/in.2 , 90 F, 70% relative humidity.…

A: given, volume of air= 2000ft3 temp.= 90F relative humidity= 70% to determine,…

Question

complete solution pls

20. Using the fundamental equations of moist air processes, determine the relative humidity of
moist air at dry bulb temperature of 280C and 240C wet bulb temperature.
Answer:
relative humidity %
21. Using the fundamental equations of moist air processes, determine the specific volume of
moist air at dry bulb temperature of 30oC and 250C wet bulb temperature.
Answer:
specific volume m3/ kg d.a.
22. Using the fundamental equations of moist air processes, calculate the enthalpy of moist air at
dry bulb temperature of 800F and 700F wet bulb temperature.
Answer:
Lenthalpy Btu/lb d.a.

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Similar questions

1. Air at a dry bulb temperature (dbt) of 40 oC and a relative humidity of 30% is heated to a dbt of 80 oC. Using psychrometric chart to determine: a. The change in moisture content per kg of dry air. b. The change in enthalpy from the initial unheated air to heated air.
Pls. Answer..thank you! An air-conditioning system operates at a total pressure of 1 atm and consists of a heating section and an evaporative cooler. Air enters the heating section at 15OC and 55 percent relative humidity at a rate of 30 m3 /min, and it leaves the evaporative cooler at 25OC and 45 percent relatively humidity. Determine the TOR.
1. An air-conditioned space is maintained at 25 °C and 50% relative humidity. The outside conditions are 40 °C DBT and 25 °C WBT. The space has a sensible heat gain of 24.5 kW. The conditioned air is supplied to the space as saturated air at 10 °C. The equipment consists of an air washer such that the air entering to it comprises 25% outside air and the remainder being recirculated room air. Calculate: - A. The volume flow rate supplied to the space. B. The latent heat gain to the space. C. The cooling load of the air washer.
From air at 35°C and relative humidity 65%, 5 gram and temperture of air after removing water vapour is 25°C DBT. The relative humidity at 25°C (in %) of water vapour per kg of air is removed is t (°C) P (bar) Vs 35 0.05625 25 0.03118
a. Outside air, initially at 55oF db and 40oF wb, at the rate of 500 cfm is heated and humidified to 85oF and 60% relative humidity. Calculate (a) the heat transfer rate and (b) the amount of moisture added to the air stream.Answers: a. _______heat transfer rate Btu/min b. _______moisture added lb/min b. Moist outside air at 100oF db and 75oF wb is cooled to 70oF db and 50% relative humidity. The volume flow of air is 2500 cfm, and the condensate leaves at 72oF. Calculate (a) the heat transfer rate and (b) the amount of moisture removed.Answers: a. _________heat transfer rate Btu/min (10 points) b._________ moisture removed lb/min
What is the maxmium specific humidity of air at -30C is ________________and the maximum specific humdity of air at -10 C is _______________; therefore, the difference in maximum specific humidity between -30C and -10C is _____________. The maximum specific humidity of air at 30 C is ________________ and the maximum specific humidity of air at 10 C is ____________; therefore, the difference in maximum specific humidity between 30C and 10C is ______________.
Moist air at a dry bulb temperature of 298 K has a relative humidity of 50% when the barometric pressure is 101.4 Kpa. Determine : (use equation not chart) a. The partial pressure of vapor b. The partial pressure of air c. The dew point temperature d. The specific humidity e. The specific volume f. The enthalphy
Using a psychometric diagram, describe the heating and humidification process from the following data. Initially the air was at dry bulb temperature (DBT) 35 ° C and RH 35%. air preheated to DBT 85 ° C. The heated air is then flowed through a humidifier to increase the RH to 25%. for this process, count, a. change in absolute humidity of air from initial to final conditions = ..... (kg water / kg air) b. change in air enthalpy from initial to final conditions = ..... (kj / kg air)
In an air conditioning system, return air at 24°C dry-bulb temperature and 40% relative humidity is mixed with outdoor ambient air at 30°C dry-bulb temperature and 70% relative humidity. The dry air mass flow rate of outdoor air is 20% of the supply air mass flow rate to the space. The pressure is constant at 101.3 kPa.-Calculate the dry-bulb temperature of the supply air in °C.-The humidity ratio of the supply air.-The enthalpy of supply air in kJ/kg.
Calculate the specific humidity if the relative humidity is50% and the capacity of the air (saturation specifichumidity) is 30g/kg. answer choices can be: 15 g/kg0.15 g/kg0.60 g/kg60 g/kg
JUST NEED QUESTION 2 NOT 1 1. Air at a dry bulb temperature (dbt) of 40 oC and a relative humidity of 30% is heated to a dbt of 80 oC. Using psychrometric chart to determine: a. The change in moisture content per kg of dry air. b. The change in enthalpy from the initial unheated air to heated air. 2. The previous heated air is then conveyed through a humidifier to raise its relative humidity to 25%. Using psychrometric chart to determine: a. The change in moisture content per kg of dry air. b. The change in enthalpy from the heated air to final humidified air. Hint: the humidifier changes the humidity ratio without changing dry bulb temperature.
Pls. answer this ..Thank you! Two airstreams are mixed steadily and adiabatically. The first stream enters at 37 C and 32 percent relative humidity at a rate of 16 m3 /min, while the second stream enters at 13 C and 92 percent relative humidity at a rate of 25 m3 /min. Assuming that the mixing process occurs at a pressure of 1 atm, determine the specific humidity, the relative humidity, the dry-bulb temperature, and the volume flow rate of the mixture.