subject
Engineering, 13.03.2020 05:52 maren17

The US environmental protection agency standard for coating beverage cans allows 0.29, 0.46 and 0.89 kilograms of VOC emission per liter of solids deposited for the two kinds of outside coating and one kind of inside coating in a standard two-piece beverage can. The coatings consist of solid polymers, plus pigments, dissolved in VOC solvents. The solids fraction, by weight of the paints and varnishes varies from about 20 percent to about 40 percent.

a. If we assume that the 0.29 kg/L restriction applies to a paint with 40 percent solids, what fraction fo the solvent VOC must be captured fo destroyed to meet this standard? (Assume that both solids and solvent have a density of 1 g/cm3)
b. VOC regulations in LA restrict the solvent emission from painting to 0.25 kg/L of solids. If you are a manufacturer of paints for outdoor use in LA, what are your possible ways of complying with this regulation?

ansver
Answers: 2

Another question on Engineering

question
Engineering, 04.07.2019 19:10
What is creep? what is stress relaxation?
Answers: 1
question
Engineering, 04.07.2019 19:10
Tom is having a problem with his washing machine. he notices that the machine vibrates violently at a frequency of 1500 rpm due to an unknown rotating unbalance. the machine is mounted on 4 springs each having a stiffness of 10 kn/m. tom wishes to add an undamped vibration absorber attached by a spring under the machine the machine working frequency ranges between 800 rpm to 2000 rpm and its total mass while loaded is assumed to be 80 kg a) what should be the mass of the absorber added to the machine so that the natural frequency falls outside the working range? b) after a first trial of an absorber using a mass of 35 kg, the amplitude of the oscillation was found to be 10 cm. what is the value of the rotating unbalance? c) using me-3.5 kg.m, find the optimal absorber (by minimizing its mass). what would be the amplitude of the oscillation of the absorber?
Answers: 3
question
Engineering, 04.07.2019 19:10
Starting wih an energy balance on a rectangular volume element, derive the one- dimensional transient heat conduction equation for a plane wall with constant thermal conductivity and no heat generation.
Answers: 1
question
Engineering, 04.07.2019 19:10
A)-explain briefly the importance of standards in engineering design. b)- what is patent? c)-explain the relationship between these standards: b.s. and b.s.en d)- in engineering design concepts, types of loads and how they act are important factors. explain.
Answers: 3
You know the right answer?
The US environmental protection agency standard for coating beverage cans allows 0.29, 0.46 and 0.89...
Questions
question
Mathematics, 08.06.2021 21:20
question
History, 08.06.2021 21:20