Consider a thermal storage system in which the phase change material (paraffin) is housed in a large container whose bottom, horizontal surface is maintained at Ts = 50°C by warm water delivered from a solar collector.
(a) Neglecting the change in sensible energy of the liquid phase, estimate the amount of paraffin that is melted over a five-hour period beginning with an initial liquid layer at the bottom of the container of thickness si = 10 mm. The paraffin of Problems 8.47 and 9.57 is used as the phase change material and is initially at the phase change temperature, Tmp = 27.4°C. The bottom surface area of the container is A = 2.5 m2.
(b) Compare the amount of energy needed to melt the paraffin to the amount of energy required to increase the temperature of the same amount of liquid from the phase change temperature to the average liquid temperature, (Ts + Tmp)/2.
(c) Neglecting the change in sensible energy of the liquid phase, estimate the amount of paraffin that would melt over a five-hour time period if the hot plate is placed at the top of the container and si = 10 mm.
That is only a recommendation. Im not quite sure what thats asking either. You can answer question without following the recommendation.Fancy Millwork has a factory that ...Aug 15 2021
If an alpha particle experiences an electric force of 0.325 N at a point in space, what electric force would a proton experience at the same point?May 28 2021
t inc distributed land worth $21,000 (basis $18,000) used in its business to its sole shareholder, z corp. The land was subject to a mortgage of $5,000. Assuming that t h...Jul 25 2021
Refer to the trial balance in Problem 3-13A and to the analysis of the change in owner's equity in Problem 3-14A. 2. Prepare a statement of owner's equity for Kohl's Hom...Aug 10 2021
What is the Lewis structure for SF6Jul 06 2021
On August 1, the supplies account balance was $1,025. During August, supplies of $3,110 were purchased, and $1,324 of supplies were on hand as of August 31. Determine sup...Mar 29 2020
A loan is offered with monthly payments and a 8.75 percent APR. Whatâs the loanâs effective annual rate (EAR)? (Do not round intermediate calculations and round your ...Jul 11 2021
Sign Test and Wilcoxon Signed-Ranks Test What is a major advantage of the Wilcoxon signed-ranks test over the sign test when analyzing data consisting of matched pairs?May 31 2021
In a competitive market, the actions of any single buyer or seller will: a)Affect marginal revenue and average revenue but not price.b)Adversely affect the profitability ...Apr 19 2021
Refer back to the beginning of this chapter to the excerpt from a Los Angeles Times article about Reed Slatkin's fraud. The article insinuates that the FBI and IRS's raid...Aug 21 2021