Q5: Imagine that you do not want the CO2concentration to exceed 766 ppm. What is theminimum ventilation rate that is required for ahouse of 4 people? Assume the house has 3bedrooms, a total volume of 11,105m^3 with 3mceilings, the outdoor CO2 concentration is 400ppm and CO2 is produced at a rate of .005 L/SCO2/person. Assume 100% outdoor air with norecirculation. Report answer in L/s and round tothe nearest integer. Determining Whole-Building Ventilation Rates for Residential BuildingsWhole-building ventilation replaces an amount of stale, indoor air with ventilation from the outdoors. It isintended to dilute indoor pollutants and provide acceptable air quality. ASHRAE Standard 62.2, Ventilation andAcceptable Air Quality in Low-Rise Residential Buildings, defines the roles and minimum requirements formechanical systems, natural ventilation systems, and building envelopes intended to provide acceptableindoor air quality (IAQ) in residential buildings. We will use the following formula from ASHRAE Standard 62.2to calculate the total required ventilation rate:Q = 0.15Afloor + 3.5 (Núr + 1)Where:Q is the total required ventilation rate (L/s)A floor is the dwelling-unit floor area (m2)Nbrisnumofedrooms (not toless than 1)Once we know the ventilation rate in a space of a given volume, we can also calculate the steady-state CO2concentration using the following formula:GNKCinCout +Where:Cin is the indoor steady state concentration of C02, expressed as parts per million, or ppm(dimensionless)Cout is the outdoor concentration of CO2 that is in the fresh air from outdoors, expressed as parts permillion, or ppm (dimensionless)G is the generation rate of CO2 per occupant (L/s of CO2/ person)N is the number of occupants (people)O is the total ventilation rate (L/s)K is a constant to introduce units of ppm (K is equal to 1,000,000)

Cin=Cout+GNKQ Cin= 766 ppm Cout= 400 ppm G= 0.005 N= 4 people K=1000000

Q5: Imagine that you do not want the CO2 concentration to exceed 766 ppm. What is the minimum ventilation rate that is required for a house of 4 people? Assume the house has 3 bedrooms, a total volume of 11,105m^3 with 3m ceilings, the outdoor CO2 concentration is 400 ppm and CO2 is produced at a rate of .005 L/sCO2/ person. Assume 100% outdoor air with no recirculation. Report answer in L/s and round to the nearest integer.

Q5: Imagine that you do not want the CO2 concentration to exceed 766 ppm. What is the minimum ventilation rate that is required for a house of 4 people? Assume the house has 3 bedrooms, a total volume of 11,105m^3 with 3m ceilings, the outdoor CO2 concentration is 400 ppm and CO2 is produced at a rate of .005 L/sCO2/ person. Assume 100% outdoor air with no recirculation. Report answer in L/s and round to the nearest integer.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: A 50-L electrical radiator containing heating oil is placed in a 50-m³ room. Both the room and the…

A: Heater is kept on approximately 41 minutes Thankyou! Feel free to ask if you have any…

Q: Problem 8 Water enters the tubes of a cold plate at 65°C with an average velocity of 50 ft/min and…

Q: Calculate the amount of heat loss due to ventilation needed in the flats if they are occupied by…

A: Given, Specific heat capacity 1 KJ/m3/°C 3 people each person needing 5litres of fresh air per…

Q: The air coming out of the distillery has 60% relative humidity. How much water will you need to…

A: Consider the given data The air coming out of the distillery has 60% relative humidity 0.69g/kg…

Q: Problem 3 Refrigerant-134a enters a diffuser steadily as saturated vapor 500 kPa with a velocity of…

Q: Calculate the values of critical height and critical velocity for water flowing through a…

A: Given: Width of channel, b = 7 m Flow rate, Q = 21 m3/sec

Q: 18. Air with a density of p = 1.2 kg/m³ flows in an inclined ventilation duct having a cross-…

Q: The noise level from a source outside a building is 75 dB(A). The wall material has an overall…

A: Given, L = 75 dB(A) Aw = 39.5 m2 Ao = 0.5 m2

Q: Provide a reasonable design for a 99,4% efficient ESP treating 30,000 m3/mm of gas, The dust has a…

A: The given data is shown below: Efficiency=99.4 %Discharge=30,000 m3/minResistivity=7.1×1010 ohm-cm

Q: Assume an inside room temperature of 70°F and an attic air temperature of 15°F, with an exposed area…

A: Given- Tin=70°FT∘=15°FExposed Area=885 ft2Resisitance of inside attic film R1=…

Q: 2. A line was measured using a 50 m tape and was recorded as 746.22 m. when the average temperature…

A: The length of line measured = 746.22mThe standard length of tape at 20°C, l1 =50mThe average…

Q: What is the pressure drop due to the Bernoulli Effect as water goes into a 3.00-cm-diameter nozzle…

A: Solution:- From Bernoulli equation, we know: P1+12ρv12 =P2+12ρv22 where, P1, P2 are the pressures…

Q: A filter press with an effective filtering area between 350m^2 operates constantly maintaining a…

A: The objective of the question is to calculate the filtration velocity at a given time (t=120m) for a…

Q: estimate the NO source strength of the heater

Q: Esumate the vapor pressure, all pressure, relative humidity, and all density at a height of 1800 in…

A: The height of the atmosphere = 1500 mThe total pressure = 100 kPaThe air temperature = 28°CThe dew…

Q: Civil Engineering Consider two other houses with 200 [m?] of foundation area and 1000 [m'] volume.…

A: Steady concentration: When a chemical is administered constantly or frequently, the amount soaked up…

Q: Q6: Consider a 3 bedroom apartment with 3 roommates. The apartment has a volume of 11,742 m^3 with 3…

Q: Problem 7 Liquid water at 200 kPa and 25°C is heated in a chamber by mixing it with superheated…

A: Step 1:Step 2:

Q: 8. The national ambient air quality standard for sulfur dioxide is 80 ug m-³. Assuming an amount of…

A: Given National ambient air quality standard for sulfur dioxide = 80 ×10-3 mg/m3 Amount of air…

Concept explainers

Thermal Processes

Some of the key areas where thermal processes find their application are:

Question

Q5: Imagine that you do not want the CO2
concentration to exceed 766 ppm. What is the
minimum ventilation rate that is required for a
house of 4 people? Assume the house has 3
bedrooms, a total volume of 11,105m^3 with 3m
ceilings, the outdoor CO2 concentration is 400
ppm and CO2 is produced at a rate of .005 L/SCO2/
person. Assume 100% outdoor air with no
recirculation. Report answer in L/s and round to
the nearest integer.

Determining Whole-Building Ventilation Rates for Residential Buildings
Whole-building ventilation replaces an amount of stale, indoor air with ventilation from the outdoors. It is
intended to dilute indoor pollutants and provide acceptable air quality. ASHRAE Standard 62.2, Ventilation and
Acceptable Air Quality in Low-Rise Residential Buildings, defines the roles and minimum requirements for
mechanical systems, natural ventilation systems, and building envelopes intended to provide acceptable
indoor air quality (IAQ) in residential buildings. We will use the following formula from ASHRAE Standard 62.2
to calculate the total required ventilation rate:
Q = 0.15Afloor + 3.5 (Núr + 1)
Where:
Q is the total required ventilation rate (L/s)
A floor is the dwelling-unit floor area (m2)
Nbris
num
of
edrooms (not to
less than 1)
Once we know the ventilation rate in a space of a given volume, we can also calculate the steady-state CO2
concentration using the following formula:
GNK
Cin
Cout +
Where:
Cin is the indoor steady state concentration of C02, expressed as parts per million, or ppm
(dimensionless)
Cout is the outdoor concentration of CO2 that is in the fresh air from outdoors, expressed as parts per
million, or ppm (dimensionless)
G is the generation rate of CO2 per occupant (L/s of CO2/ person)
N is the number of occupants (people)
O is the total ventilation rate (L/s)
K is a constant to introduce units of ppm (K is equal to 1,000,000)

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

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, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

Q4/ Determine the heat transfer rate for the following parallel-flow heat exchanger specification Cold flow enters at 40-C, Cc= 20,000 W/K. Hot water enters at 150 -C, Ch= 10,000 W/K A-30/m², U-500 W/m². k.
Aluminum is a poor material to reinforce concrete with, especially as opposed to steel. There are five primary reasons why; Cost, strength, and stiffness are the first three. Please name the fourth and fifth reasons and then please explain in detail what would occur if these two were done.
Explain the HVAC system with the most suitable energy medium for usage in Architectural constraints of Commercial buildings. Illustrate with your own mathematical example of Temperature scale.
Q3: Calculate the steady-state CO2 concentration of a single family home with 3 bedrooms, 3 people, a total area of 114m^2. Assume an outdoor concentration of CO2 of 400 ppm and that each of the house’s occupants produce .005 L/s of CO2/person. Assume 100% outside air with no recirculating. Assume that the ventilation rate is 23 L/s. Report your answer in ppm and round to the nearest integer.
For a given HVAC water piping system, a pressure of 67 ft of head is required to produce 44 GPM water flow. How much pressure in ft will be required to flow 64 GPM?
14. Bench scale aeration test was performed on a sample of water evaluated for air stripping to remove VOCs. The target VOC is present in the water sample before aeration at 890 µg/L. The test data is given in the below table. Determine the order of the reaction. Show your work. Elapsed time of aeration (s) 15 30 45 65 90 120 Target VOC Effluent concentration (µg/L) 397 191 104 53 12 3