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Determine which of the following 3 material substrates would have the best R-value or lowest thermal conductivity. The purpose is to determine which of the 3 materials would make the best insulator to heat and cold?
The following is given:
Assuming that the outside air temperature was 100 degrees F determine which of the 3 substrates above provides the best/greatest insulation value or resistance to temperature transmission. Explain why and show calculations knowing that:
C = 1/R where C = thermal conductance; and
C = k/thickness (inches) where k = thermal conductivity (Btu-in/ft2-hr-oF)
question 1 a the standard service illuminance for specific work activities is given in lux. what units are used in
Assume that losses cannot be offset against revenues from other operations for tax purposes (i.e., no tax credits in years when the plant makes a loss). Estimate the following:
process principles assignment production of formaldehydeworld formaldehyde production is estimated to be about 8
There are four stable isotopes of iron with mass numbers 54, 56, 57, and 58. There are also two radioactive isotopes: iron-53 and iron- 59. Predict modes of decay for these two isotopes. (See Table 18.2.).
A waste with a concentration of 0.1 gram per liter is to be introduced to a hazardous waste reactor that is to achieve 90% destruction. A reactant
Calculate the grams of H2O that will form on decomposition of 0.10 mole of ammonium nitrate
ECH 3023: Mass Balance around two distillation Columns Using Excel, Derive the simultaneous linear mass balance equations for the system using all the information provided.
Two separate metal blocks of thickness d and 2d are kept at constant temperature T0 at the top anda constant heat flux q0 is provided at the bottom. Draw the steady state temperature profile for eachof the blocks.
Using the mole balance equation only, a relationship between conversion in the reactor and the reactor temperature can be obtained. This relationship is shown in the following figure as a plot of XMB versus reactor temperature.
High-density polyethylene may be chlorinated by inducing the random substitution of chlorine atoms for hydrogen.
Carbon dioxide can be separated from other gases by preferential absorption into an amine solution. The carbon dioxide can be recovered by heating at atmospheric pressure. Suppose pure CO2 vapor is available from such a process at 80°C and 1 bar. Sup..
Cunene is made by alkylation of benzene with propylene over zeolite catalyst. To maximize selectivity to desired products, several beds of catalyst are used inside the same reactor.
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