Q8-LR-1

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Pennsylvania State University *

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102

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Mechanical Engineering

Date

Jan 9, 2024

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6

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3/28/23, 12:15 AM Lesson 8 - Quiz: EGEE 102 (SP23): Energy Conservation for Environmental Protection https://psu.instructure.com/courses/2224925/quizzes/4674330 1/6 Lesson 8 - Quiz Due Apr 1 at 11:59pm Points 25 Questions 12 Available Mar 27 at 12am - Apr 1 at 11:59pm Time Limit 20 Minutes Allowed Attempts 2 Instructions Attempt History Attempt Time Score LATEST Attempt 1 14 minutes 25 out of 25 Answers will be shown after your last attempt Score for this attempt: 25 out of 25 Submitted Mar 28 at 12:14am This attempt took 14 minutes. Remember that once you start the quiz, you cannot stop the timer. If you leave the quiz, the timer keeps running. You must finish in 20 minutes. Feedback for this Quiz (along with your responses and the correct answers) will be made available after the deadline for this Quiz. Take the Quiz Again 2 / 2 pts Question 1 Compared to a house built in the 1960's, a house built today has _____. A lesser R-value A greater R-value About the same R-value
3/28/23, 12:15 AM Lesson 8 - Quiz: EGEE 102 (SP23): Energy Conservation for Environmental Protection https://psu.instructure.com/courses/2224925/quizzes/4674330 2/6 No R-value 2 / 2 pts Question 2 Radiant floor systems heat _____. the entire floor localized spots Some corners of the room 2 / 2 pts Question 3 What type of air system is most commonly used in central heating and cooling systems? Hydronic Electric Resistance Forced Air Duct Radiant baseboard 2 / 2 pts Question 4 There is no reason to ventilate the attic in the summer if it is well insulated.
3/28/23, 12:15 AM Lesson 8 - Quiz: EGEE 102 (SP23): Energy Conservation for Environmental Protection https://psu.instructure.com/courses/2224925/quizzes/4674330 3/6 True False 2 / 2 pts Question 5 When presented with limited space, a hydronic heating system can be installed vertically. True False A GHP can be installed vertically if there is limited space. A hydronic heating system must be installed horizontally underneath the floor to be effective. 2 / 2 pts Question 6 The work (energy) input to a heat pump system is at the _____. Condenser coil Expansion Valve Compressor Compressor Evaporator coil
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3/28/23, 12:15 AM Lesson 8 - Quiz: EGEE 102 (SP23): Energy Conservation for Environmental Protection https://psu.instructure.com/courses/2224925/quizzes/4674330 4/6 2 / 2 pts Question 7 The compressor of a heat pump system ___________ the pressure of the refrigerant, ________ its temperature. increases, lowering increases, raising decreases, lowering decreases, raising The compressor increases the refrigerants pressure, increasing its temperature. 2 / 2 pts Question 8 Which one of the following devices may heat as well as cool a house? A Furnace A Radiator A Heat Pump A Solar Panel 2 / 2 pts Question 9
3/28/23, 12:15 AM Lesson 8 - Quiz: EGEE 102 (SP23): Energy Conservation for Environmental Protection https://psu.instructure.com/courses/2224925/quizzes/4674330 5/6 A heat mover speeds up a natural heating process. True False False, naturally, heat moves from high to low temperature environment. A heat pump goes against nature, moving the heat from a low to a high temperature environment. 2 / 2 pts Question 10 An active system emits more SO directly into the environment than a passive system. 2 True False both the active and passive systems use solar energy, which do not directly emit SO2 energy into the environment. 2 / 2 pts Question 11 Which one of the following is an example of thermal mass? Stone
3/28/23, 12:15 AM Lesson 8 - Quiz: EGEE 102 (SP23): Energy Conservation for Environmental Protection https://psu.instructure.com/courses/2224925/quizzes/4674330 6/6 Straw Styrofoam Wood Stone, water, or concrete can be considered thermal masses. 3 / 3 pts Question 12 A freezer maintains a temperature of 9ºC while the outside temperature is 30ºC. What is the COP of the freezer cooling system? 14.11 Solution: T(hot)/T(hot)-T(cold) (Remember to convert from C to K) o Quiz Score: 25 out of 25
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