ELEM.PRIN.OF CHEMICAL PROC.-W/ACCESS
4th Edition
ISBN: 9781119330745
Author: FELDER
Publisher: WILEY
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Textbook Question
Chapter 5, Problem 5.90P
A fuel cell is an electrochemical device that reacts hydrogen with oxygen from the air to produce water and DC electricity. A proposed application is replacement of the gasoline-fueled internal combustion engine in an automobile with a 100 kW fuel cell.
You are on a summer internship with a gas supplier planning to transport hydrogen to service stations for use in cars powered by fuel cells. The hydrogen is to be transported in tube trailers, each of which has 10 tubes of length 10.5 m and diameter 0.56 m. Hydrogen in the tubes at 2600 psig and an average temperature of 298 K is discharged at service stations to a ?nal pressure of 55 psig. Refueling each fuel-cell-powered automobile is estimated to require 4.0 kg of hydrogen.
(a) You and your of?ce-mate—an intern from a different university—have been asked to estimate the number of automobiles that can be refueled by one tube-trailer load of hydrogen. He does a very quick calculation and comes up with a value of 95 cars. Speculate how he did it and provide support for your speculation. What was his mistake?
(b) Do the calculation using the SRK equation of state. Instead of using Eqs. 5.3−11 and 5.3-13 for the parameter a, use the following correlation developed speci?cally for hydrogens:23
(c) Do the calculation using the law of corresponding states.
(d) In which of the three estimates would you have the greatest con?dence, and why?
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Chapter 5 Solutions
ELEM.PRIN.OF CHEMICAL PROC.-W/ACCESS
Ch. 5 - A liquid mixture containing 40.0 wt% n-octane and...Ch. 5 - Prob. 5.2PCh. 5 - Prob. 5.3PCh. 5 - Prob. 5.4PCh. 5 - Prob. 5.5PCh. 5 - Prob. 5.6PCh. 5 - Prob. 5.7PCh. 5 - Prob. 5.8PCh. 5 - Prob. 5.9PCh. 5 - Prob. 5.10P
Ch. 5 - Prob. 5.11PCh. 5 - Prob. 5.12PCh. 5 - Prob. 5.13PCh. 5 - Prob. 5.14PCh. 5 - Prob. 5.15PCh. 5 - Prob. 5.16PCh. 5 - Prob. 5.17PCh. 5 - Prob. 5.18PCh. 5 - Prob. 5.19PCh. 5 - A device has been designed to measure the flow...Ch. 5 - Prob. 5.21PCh. 5 - Prob. 5.22PCh. 5 - Spray drying is a process in which a liquid...Ch. 5 - Prob. 5.24PCh. 5 - Lewis12 describes the hazards of breathing air...Ch. 5 - A stream of air at 35°C and a gauge pressure of...Ch. 5 - Prob. 5.27PCh. 5 - In froth ?otation, air is bubbled through an...Ch. 5 - Prob. 5.29PCh. 5 - Prob. 5.30PCh. 5 - Bread is typically made by ?rst dissolving...Ch. 5 - Prob. 5.32PCh. 5 - Prob. 5.33PCh. 5 - Prob. 5.34PCh. 5 - Prob. 5.35PCh. 5 - Prob. 5.36PCh. 5 - Prob. 5.37PCh. 5 - Prob. 5.38PCh. 5 - Prob. 5.39PCh. 5 - A spray-drying operation similar to that described...Ch. 5 - Prob. 5.41PCh. 5 - Fermentation is a biochemical process in which a...Ch. 5 - Prob. 5.43PCh. 5 - Prob. 5.44PCh. 5 - Ethane at 25°C and 1.1 atm (abs) flowing at a rate...Ch. 5 - The ?ow of air to a gas-?red boiler furnace is...Ch. 5 - Prob. 5.47PCh. 5 - The oxidation of nitric oxide NO+12O2NO2 takes...Ch. 5 - Prob. 5.49PCh. 5 - 5.50.19 In chemical vapor deposition (CVD), a...Ch. 5 - A gas turbine power plant receives a shipment of...Ch. 5 - Prob. 5.52PCh. 5 - 5.53.20 Chemicals are stored in a laboratory with...Ch. 5 - Prob. 5.54PCh. 5 - Prob. 5.55PCh. 5 - A stream of ho dry nitrogen flows through a...Ch. 5 - Prob. 5.57PCh. 5 - You have purchased a gas cylinder that is supposed...Ch. 5 - The current global reliance on fossil fuels for...Ch. 5 - Two humid gas streams are combined in a heated...Ch. 5 - Most of the concrete used in the construction of...Ch. 5 - The ultimate analysis of a No. 4 fuel oil is 86.47...Ch. 5 - A stream of liquid n-pentane flows at a rate of...Ch. 5 - Alka-Seltzer( is an over-the-counter medicine used...Ch. 5 - Hydrogen sul?de has the distinctive unpleasant...Ch. 5 - The quantity of sulfuric acid used globally places...Ch. 5 - A small power plant produces 500 MW of electricity...Ch. 5 - You have been assigned the task of measuring the...Ch. 5 - Prob. 5.69PCh. 5 - Methanol is synthesized from carbon monoxide and...Ch. 5 - Prob. 5.71PCh. 5 - Prob. 5.72PCh. 5 - Steam reforming is an important technology for...Ch. 5 - A ?owchart of a methanol synthesis process is...Ch. 5 - The measured volumetric flow rate of ethane at...Ch. 5 - Prob. 5.76PCh. 5 - Methanol is to be delivered to a process unit at a...Ch. 5 - Prob. 5.78PCh. 5 - Prob. 5.79PCh. 5 - Prob. 5.80PCh. 5 - Prob. 5.81PCh. 5 - Prob. 5.82PCh. 5 - Prob. 5.83PCh. 5 - Prob. 5.84PCh. 5 - Prob. 5.85PCh. 5 - Prob. 5.86PCh. 5 - Prob. 5.87PCh. 5 - Prob. 5.88PCh. 5 - Prob. 5.89PCh. 5 - A fuel cell is an electrochemical device that...Ch. 5 - In a metered-dose inhaler (MDI), such as those...Ch. 5 - Prob. 5.92PCh. 5 - Prob. 5.93PCh. 5 - Approximately 150 SCFM (standard cubic feet per...Ch. 5 - Prob. 5.95PCh. 5 - Prob. 5.96PCh. 5 - Prob. 5.97PCh. 5 - The product gas from a coal gasification plant...Ch. 5 - Prob. 5.99PCh. 5 - Prob. 5.100PCh. 5 - A gas mixture consisting of 15.0 mole% methane....Ch. 5 - A system has been devised to store acetonitrile...Ch. 5 - Prob. 5.103PCh. 5 - Prob. 5.104P
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