1. Moist air exits at a condition of 100 F dry-bulb temperature, 65 F thermodynamic wet bulb temperature, and 14.696 psia pressure. Determine(a) the humidity ratio, (b) enthalpy, c()dew-point temperature,

1. Moist air exits at a condition of 100 F dry-bulb temperature, 65 F thermodynamic wet bulb temperature, and 14.696 psia pressure. Determine(a) the humidity ratio, (b) enthalpy, c()dew-point temperature,

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: a. Outside air, initially at 55oF db and 40oF wb, at the rate of 500 cfm is heated and humidified to…

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

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

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

Q: In an air-conditioning unit 3.5 m3/s air at 27°C dry-bulb temperature, 21°C wet-bulb temperature,…

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: Two airstreams are mixed steadily and adiabatically. The first stream enters at 35OC and 30 percent…

Q: Cooling and dehumidification : 120 m3 of air per minute at 35°C DBT and 50% relative humidity is…

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: 13-27 Air at 105 kPa, 15°C, and 50 percent relative humidity flows in a 25-cm-diameter duct at a…

Q: (a) the temperature and relative humidity of the air when it leaves the heating section, (b) the…

A: Given: T1=150C humidity=55% V1=30 m^3/min T3=25oC humidity3=45% To determine: (a) the temperature…

Q: Air flowing at 2 kg / 5 has a dry ball temperature of 46 ° C and a wet bulb temperature of 25 ° C,…

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: Saturated air at 13 °C and 1 atm enters the heating section of an air-conditioning system at a rate…

A: Given: Inlet temperature (T1)=13°CMass flow rate (m)=0.5kg/sOutlet temperature (T2)=30°C

Q: air-water vapor mixture has a relative humidity of 40% and an enthalpy of 50 kJ/kg. What is the…

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: The dry-bulb temperature and wet-bulb temperature of a sample of air are 23°C and 18°C,…

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

A: Given: P1=78kPaT1=28°Cφ1=31%V˙1=4.2m3/min

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

Q: Using the psychrometric chart, for atmospheric air at 1 atm. Dry-bulb Temperature = 23 degrees C…

A: Given Dry bulb temperature, DBT = 23oC Relative humidity RH = 50 % Find Wet bulb temperature,…

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

A: following is the answer to the above question- given data- dry-bulb temperature = 30 deg C relative…

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: Home Work (1): Moist air at a state of 60°C dry-bulb, 32.1°C wet-bulb (sling) and 101.325 kPa…

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

Q: A 12 m' tank contains saturated air at 33°C, 100 kPa. Determine; (i) the mass of dry air; (ii) the…

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

Q: In an air-conditioning unit 3.5 m3/s air at 27°C dry-bulb temperature, 21°C wet-bulb temperature,…

Q: Moist air flowing at 2 kg/s and a dry bulb temperature of 50 C and wet bulb temperature of 30C…

A: state (1) dry bulb temperature (DBT) = 50°C wet bulb temperature (WBT) = 30°C moist air flow = ma1…

Q: ir enters a heating section at 95 kPa, 10°C, and 30 percent relative humidity at a rate of 6.2…

Q: A stream of warm air with a dry-bulb temperature of 36OC and a wet-bulb temperature of 30OC is mixed…

A: Given data dry-bulb temperature (DBT) = 36OC wet-bulb temperature(WBT) = 30OC Mass flow rate of warm…

Q: If the specific humidity of an environment is 20 g / kg and the dry bulb temperature is 31oC,…

A: Specific humidity of air, ω=20 g/kg Dry bulb temperature of air, Tdbt=31oC

Q: which of the following properties is NOT true about moist air at standard condition which is at a…

A: Atm. pressure, P=1.01325barDry bulb temperature, t=34°CHumidity ratio, w=10gw/kg daw=0.01kg/kg of…

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

Q: Air enters a heating section at 95kPa, 10°C and 30% relative humidity. The air flow rate is 6…

A: Given:T1=95kPaP1=10°C∅1=30%V.1=6m3/minT2=25°C To find:- a) Heat addition rate b) Relative humidity…

Question

100%

Science that deals with the amount of energy transferred from one equilibrium state to another equilibrium state.

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

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Similar questions

6. Assuming dry- and wet-bulb temperatures of 75 and 63°F, respectively, and using the psychrometric tables of Appendix B, determine (a) dewpoint temperature, (b) relative humidity, (e) saturation vapor pressure, and (d) actual vapor pressure.
In an air sample with a dry-bulb temperature of 28°C and a wet-bulb temperature of 22°C what is the (relative humidity)?
Example 2: Moist air at 35C db, and specific volume 0.89 m3/kg. Determine: - Enthalpy h, Specific humidity .
Air enters a heating section at 95 kPa, 10°C, and 30 percent relative humidity at a rate of 6.2 m3/min, and it leaves at 25 C Use data from the tables. Determine the rate of heat transfer in the heating section The rate of heat transfer is [ kJ/min
If moist air has a saturation humidity ratio of 0.016872 kg v/kg da at a pressure of 1.2 bar, what is the dew point temperature at this state? Note: ta- twb = tap for saturated air. Express your answer in °C.
Using the standard tables (Appendix C, Tables C-1 and C-2), determine the relative humidity and dew-point temperature if the dry-bulb thermometer reads 22°C and the wet-bulb thermometer reads 16°C. How would the relative humidity and dew point change if the wet-bulb reading were 19°C?
Moist air at 35 °C and 70% relative humidity, passing through an evaporator of a refrigeration system and cooling to 20 °C. What is the relative humidity of cooled air?
As the Airstream is cooled and dehumidified, the relative humidity____ and the absolute humidity___ A. Increases , Increases B. Decreases, Decreases C. Increases, decreases D. Decreases, Increases
An air-conditioning system operates at a total pressure of one atmosphere and consists of a heating section and an evaporative cooler. Air enters the heating section at 10 °C and 70 percent relative humidity at a rate of 30 m3/min, and it leaves the evaporative cooler at 20 °C and 60 percent relative humidity. Use this information to answer the following question. Choose the nearest value given in (a) – (e).The rate of water added to air in the evaporative cooler (kg/min) is (a) 0.12 (b) 0.67 (c) 13 (d) 37 (e) 67
In an air-conditioning unit 3.5 m3/s of air at 27 °C dry-bulb temperature, 50 percent relative humidity, and standard atmospheric pressure enters the unit. The leaving condition of the air is 13 °C dry-bulb temperature and 90 percent relative humidity. calculate the enthalpy(H1 and H2).
Atmospheric air at 760 mm Hg is at 22°C dry bulb temperature and 20°C wet bulb temperature. Using the psychrometric chart, determine: Relative humidity. Humidity ratio. Dew-point temperature. Enthalpy of air per kg dry air. Volume of moist air/kg dry air.
In your own words, answer the following questions: 1. What is the dew-point temperature? 2. How does the air motion in the vicinity of the human body affect human comfort? 3. What is the difference between dry air and atmospheric air? 4. Describe the difference between mass fraction and mole fraction