Answered: What happens when the temperature of…

What happens when the temperature of air with 80% relative humidity at 15°C is raised to 20°C The saturation water vapor pressure is 1.71 kPa at 15°C and 2.34 kPa at 20°C.

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 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: 2. An air-conditioning system is to take in outdoor air at 10 C and 30 percent relative humidity at…

A: Given Data State 1: 10°C, 30% RH State 2:22°C State 3:25°C, 60% RH P=100 kPa

Q: Air at 5 °C and 80% relative humidity that flows at a rate of 2 kg/ s is mixed with 4 kg/ s of air…

A: Write the formula for relative humidity to calculate the pressure of air at 5oC. ϕ1=Pv1Pvs1 Here, ϕ1…

Q: the total enthalpy of 18 kg of steam at 9000 kpa is 42 409.224 kj . Determine the dryness fraction…

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

Q: Consider 200 m3 of an air/water vapor mixture at 35°C and 70% relative humidity. Represent the…

Q: A room 6m x 4m x 4m is occupied by an air water vapor mixture at a dry bulb temperature of 38°C. The…

Q: Air flow at 5 kg/min, 25C and 75% relative humidity is cooled to 20C at 1 atmospheric pressure, the…

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

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

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 amount of water carried by air in a cooling tower is 15 lb/min. The change in humidity ratio in…

Q: Air is to be conditioned to have a final humidity ratio of 0.0194. If 50 cu. meter/min of this…

A: a) Schematic diagram for heating and humidification process This is a heating and humidification…

Q: How do you find the enthalpy, hf and hg of saturated water at a pressure of 175 kPa? What is it?

A: From thermodynamics steam table saturated water pressure table at pressure (P)=175KPa…

Q: Q1/ From Humidity chart calculate: a- The initial absolute humidity and relative humidity. b- The…

Q: Two airstreams are steadily mixed adiabatically. The first stream enters with a temperature of 32 °C…

Q: A room contains a water-vapor mixture at a total pressure of 101 kPa. If the partial pressure of…

Q: The dryness fraction of dry saturated steam is equal 1 From 0 to 1 O O

Q: 1- Saturated air leaving the cooling section of an A. C system at 14 C° at a ráte of 5o m'/min is…

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

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: A 1-m³ rigid tank contains air at 35°C and 125 kPa at a relative humidity of 45%. Determine the…

A: (a) The partial pressure of dry air is 122.467 kPa. (b) The enthalpy per unit mass is 68.185 kJ/kg…

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

A: An air-conditioning system operates at a total pressure of 1 atm Air enters the heating section at…

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

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

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: One m3/s of air at 12°C and 50% RH is heated and humidified using saturated steam at 100 °C to a…

A: (a) Write the given data in the problem. V˙=1 m3/s td1=12°C td2=38°CRH1=50%RH2=50% Here, V˙…

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: Air at 15 ° C and 25 percent humidity is to be heated in two stages with intermediate saturation…

A: Given: inlet condition, T1 = 15°C μ=25 % outlet condition, T2 = 45°C…

Q: 3. to a temperature of 34°C, then liquid water is sprayed into it and cooled to a temperature of…

A: Psychrometry: It is the branch of science in which the properties of moist air & dry air are…

Q: Q2: Answer one of the following: A- Saturated air leaving the cooling section of an A. C system at…

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: Atmospheric air at a temperature of 10°C and relative humidity of 0.30 is first heated aperature of…

A: Psychrometry: It is the science which deals with properties of moist & dry air. All the…

Q: An air-conditioning system is to take in outdoor air at 10 C and 30 percent relative humidity at a…

Q: Consider two rooms that are identical except that one is maintained at 25°C and 40 percent relative…

A: Given data the temperature in room 1 (T1) = 25oC the relative humidity in room 1 (ϕ1) = 40 % the…

Q: What is the enthalpy of the air-vapor mixture at 70% RH and 33°C when the barometric pressure is 101…

A: Given data:

Q: What is the relative humidity when the temperature is 30 degrees centigrade (celcius) and the water…

A: Givendry bulb temperature T=30oCspecific humidity s=14g/kg=0.014 kg/kg

Q: Without using the psychrometric chart, determine the humidity ratio and relative humidity of an…

Q: As the Airstream is cooled and dehumidified, the relative humidity____ and the absolute humidity___

Q: For an air-water system at a given moisture content, the temperature decreases as the humidity…

Question

What happens when the temperature of air with 80% relative humidity at 15°C is raised to 20°C The saturation water vapor pressure is 1.71 kPa at 15°C and 2.34 kPa at 20°C.

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

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

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
What happens when the temperature of air with 40% relative humidity at 30°C is lowered to 18°C? The saturation water vapor pressure is 4.25 kPa at 30°C and 2.07 kPa at 18°C
If the air temperature is 85°F, what is the water vapor pressure corresponding to a relative humidity of 55 percent and at 55°F with 25 percent relative humidity.
If the percent humidity of air (30 °C, total pressure 150 kPa) is 45 % and the saturation pressure of water vapor at that temperature is 6 kPa, the percent relative humidity and the absolute humidity of air are
"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?
If the partial pressure of water is 3Mpa and the corresponding saturated pressure is 3.5 Mpa, determine its relative humidity and water activity.
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
How do you find the enthalpy, hf and hg of saturated water at a pressure of 175 kPa? What is it?
Two humid airstreams are adiabatically mixed at 1 atm pressure to form a third stream. The first stream has a temperature of 100°F, a relative humidity of 90 percent, and a volume flow rate of 3 ft3/s, while the second stream has a temperature of 50°F, a relative humidity of 30 percent, and a volume flow rate of 1 ft3/s. Calculate the third stream’s temperature and relative humidity. Use data from the psychrometric chart. The third stream’s temperature is _________°F. The relative humidity is___________ %.
How much heat and moisture must be added to 8 cubic meter per minute of air at 17 C dry bulb and 35% relative humidity to raise it to 40 C and 45% relative humidity? Show the psychometric chart diagram on your paper.
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)?
absolute humidity at atmospheric pressure at 27 °C is 0.015 kg water / kg dry air. Specify:a. water vapor partial pressure (kpa)b. relative humidity (%)c. dew point temperature (° C)