UT's Civil and Environmental Engineering department is considering the purchase of an ice machine. Samantha Allen, business manager extraordinaire, wants help in evalulating the purchase. She knows that the inside of the machine is -14 °C and the outside temperature is 30 °C, The initial temperature of the water is 17 °C, and the coefficient of performance is 31% of the ideal. Electrical energy costs $0.11 /kW-hr. The specific heat of ice is 0.5cal/g-°C.
UT's Civil and Environmental Engineering department is considering the purchase of an ice machine. Samantha Allen, business manager extraordinaire, wants help in evalulating the purchase. She knows that the inside of the machine is -14 °C and the outside temperature is 30 °C, The initial temperature of the water is 17 °C, and the coefficient of performance is 31% of the ideal. Electrical energy costs $0.11 /kW-hr. The specific heat of ice is 0.5cal/g-°C.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:UT's Civil and Environmental Engineering department is considering the purchase of an ice machine. Samantha Allen, business manager
extraordinaire, wants help in evalulating the purchase. She knows that the inside of the machine is -14 °C and the outside temperature is 30 °C,
The initial temperature of the water is 17 °C, and the coefficient of performance is 31% of the ideal. Electrical energy costs $0.11 /kW-hr. The
specific heat of ice is 0.5cal/g-°C.

Transcribed Image Text:Part
Description
Answer
IsIswer
Status
" Try 1 - your answer of 0.065 is not correct.
What is the cost ($) of electricity to make
• WARNING: 2 SF given, 3 SF expected.
A.
0.065
|4 five-pound bags of ice?
# tries: 1 Show Details
If the motor that drives the compressor
38.55 mm
" Try 1 - your answer of 38.55 is not correct.
consumes 930 W of electricity, how long
• Missing units
В.
Format Check
does it take to make 4 bags of ice?
Unit mismatch
|(include units with answer)
# tries: 1 Show Details
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