Hvac metering devices - Study guides, Class notes & Summaries

HVAC Exam Questions with All Correct A The refrigerant in a condenser in a refrigeration system . - Answer-rejects heat The condenser in a refrigeration system . - Answer-Answer: All of the above A normally operating water-cooled condenser is operating with a 10°F differential between water in and water out. If scale forms on the water tubes and the entering water is 85°F, which of the following is possible? - Answer-d. Both a and b are correct. a. The outlet water temperatur...

HVAC: EPA 608 Certification Study Guide Questions and Answers, latest updated 2023 Are there drop-in replacements for R-12 systems? Why or why not? No because the new refrigerants are incompatible with the oils and lubricants used in R-12 systems. What type of oil is used in R-134a and what oils will it mix with? Ester based oils and they do not mix with other oils What type of lubricant is used with HCFCs? Alkylbenzene lubricant What is difference b/w ternary blend a az...

1. The component used to switch the heat pump unit between the heating and cooling modes of operation is the ____. a. four-way valve b. bi-valve c. two-way valve d. switching valve ANSWER: a POINTS: 1 REFERENCES: Reverse-Cycle Refrigeration QUESTION TYPE: Multiple Choice HAS VARIABLES: False DATE CREATED: 3/12/2015 12:23 PM DATE MODIFIED: 12/19/2015 6:31 PM 2. An air-to-air heat pump ____ heat from the outside air and deposits it in the conditioned space. a...

HVAC: EPA 608 Certification Study Guide, Top Exam Questions and answers, rated A Are there drop-in replacements for R-12 systems? Why or why not? - -No because the new refrigerants are incompatible with the oils and lubricants used in R-12 systems. What type of oil is used in R-134a and what oils will it mix with? - -Ester based oils and they do not mix with other oils What type of lubricant is used with HCFCs? - -Alkylbenzene lubricant What is difference b/w ternary blend a azeotr...

©THEBRIGHT EXAM STUDY SOLUTIONS 8/27/2024 12:01 PM HVAC: EPA 608 Certification Study Guide 100% Verified. Are there drop-in replacements for R-12 systems? Why or why not? - answerNo because the new refrigerants are incompatible with the oils and lubricants used in R-12 systems. What type of oil is used in R-134a and what oils will it mix with? - answerEster based oils and they do not mix with other oils What type of lubricant is used with HCFCs? - answerAlkylbenzene lubricant What is di...

HVAC Study Sheet Exam Questions and Complete Solutions What will happen when a steam turbine idles at its critical speed limit? - Answer: The turbine will vibrate violently What happens to the steam as it goes through each stage of the turbine? - Answer: Steam pressure drops What is the purpose of the steam ejectors or a surface condenser? - Answer: To create a vacuum on the condenser for the steam exhaust. What is the purpose of the Gland Steam Seal? - Answer: To create positive...

HVAC Exam Questions with All Correct Answers The refrigerant in a condenser in a refrigeration system . - Answer-rejects heat The condenser in a refrigeration system . - Answer-Answer: All of the above A normally operating water-cooled condenser is operating with a 10°F differential between water in and water out. If scale forms on the water tubes and the entering water is 85°F, which of the following is possible? - Answer-d. Both a and b are correct. a. The outlet water temper...

Which of the following is not the product of incomplete combustion: - ANSWER-Oxides of nitrogen An oil trap is required at the base of the discharge line of the vertical riser is _____ or above - ANSWER-8 feet A diode allows current to flow in one direction: - ANSWER-True 1 Watt = _____ Btu - ANSWER-3.41 Current in a closed circuit is limited by which of the following: - ANSWER-resistance An oil separator is located in the _____: - ANSWER-Discharge line ______ is the heat that ...

HVAC METERING DEVICES EXAM 2023 ...

HVAC EPA 608 Certification Study Guide 1. Are there drop-in substitutes for R-12 systems? If so, why or why not? - ️ No, there are no drop-in replacements for R-12 systems because the new refrigerants are incompatible with the oils and lubricants used in those systems. 2. What type of oil is used with R-134a, and how does it interact with other oils? - ️ R-134a systems use ester-based oils, which do not mix with other types of oils. 3. What lubricant is utilized with HCFCs? - ️ HCF...