What ventilation rate is needed to maintain formaldehyde

Reference no: EM13300587

Indoor air quality is an under appreciated health hazardous. The air quality in a building can be modeled as a CSTR. Suppose that the carpet in a new office building releases formaldehyde at a rate of 10 micrograms per hour. The building has a floor area of 72 square feet. What ventilation rate (in cubic meters per hour) is needed to maintain a formaldehyde concentration of 0.1 parts per billion. (The density of air at room temp. is roughly 1.2 kg/m^3.) Be careful about the concentration units in the problem. You need to estimate one quantity to solve.

Reference no: EM13300587

Questions Cloud

Explain all molecules will have longer retention times : On a more polar column, nonpolar compounds will have shorter retention times. b) On a more polar column, all molecules will have longer retention times

Calculate the expected rates of return for the market and s : Calculate the expected rates of return for the market and Stock S.

Evaluate the maximum speed of the mass : A mass-spring system oscillates on a horizontal frictionless surface with an amplitude of 3.41 cm. If the spring constant is 264 N/m, Determine the maximum speed of the mass

Determine what is steady state effluent concentration of si : Water flows into and out of a 5 liter tank at a rate of 1 L/min. Within the tank, the mineral apatite is dissolving at a rate of 3x10^-10 moles of Si per m^2 per sec. If the tank contains 10g of the apatite with a specific surface area of 2 m^2/g,

What ventilation rate is needed to maintain formaldehyde : Indoor air quality is an under appreciated health hazardous. The air quality in a building can be modeled as a CSTR. Suppose that the carpet in a new office building releases formaldehyde at a rate of 10 micrograms per hour.

What happens to the present value factor as discount rate : What happens to the present value factor as our discount rate or interest rate increases for a given time period?

Define what is the ph of the solution after of naoh : A 20.0-mL sample of 0.25 M HNO3 is titrated with 0.15 M Na OH. What is the pH of the solution after 30.0 mL of NaOH have been added to the acid

Calculate the angular acceleration of the pulley : A string is wrapped around a pulley of radius 3.60cm , and a weight hangs from the other end. calculate the angular acceleration of the pulley

What is the current yield on the following bond : What is the "current yield" on the following bond?

User Account

All Pages