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Author Question: How does the presence of 7 to 9 percent CO2 in flue gas reflect heating unit performance? A) It ... (Read 112 times)

neverstopbelieb

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on: Jul 24, 2018
How does the presence of 7 to 9 percent CO2 in flue gas reflect heating unit performance?
 
  A) It indicates a possible gas leak. B) It indicates a lack of efficiency.
  C) It indicates that the unit is running efficiently. D) It indicates the level of CO2 is neutral.

Question 2

A graphical representation of air properties is:
 
  A) An enthalpy chart. B) A temperature-pressure chart.
  C) A pressure-temperature chart. D) A psychrometric chart.


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helenmarkerine

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Reply #1 on: Jul 24, 2018
Answer to Question 1

C

Answer to Question 2

D


neverstopbelieb

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Reply 2 on: Jul 24, 2018
Excellent

okolip

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Reply 3 on: Yesterday
Wow, this really help

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