Which refriger - Study guides, Class notes & Summaries

ODP TEST QUESTIONS WITH VERIFIED ANSWERS A Chlorofluorocarbon (CFC) refrigerant consists of what elements? 2. What causes a CFC molecule to breakdown when it reaches the atmos- phere? 3. Ozone molecules consist of how many oxygen atoms? 4. The venting of which group of refriger- ants is a concern because it has GWP but not ODP? 5. Does the ozone layer work to increase or decrease the amount of ultraviolet ra- diation at the earth's surface? 6. Circle the refrigerant that causes th...

Technicians who perform sealed system service on small appliances must have; Type I or Universal certification. A small appliance is defined by EPA as; Appliances manufactured, charged, and hermetically sealed in a factory with 5 Lbs or less of refrigerant Type I Certification is required for; persons handling refrigerant during maintenance, service, or repair of small appliances If regulations change after the technician becomes certified; The technician is responsibility for com...

EPA 608 Core Test Sample Questions with Correct Answers As of what date did it become unlawful to release Class 1 and Class II refrigerants to the atmosphere? a. July 1, 1992 b. July 1, 1993 c. November 14, 1994 d. January 1, 1996 - Correct Answer a. July 1, 1992 What is the ozone layer and why is it important to us on Earth? a. Thin layer of R-22 in the atmosphere that filters UV. b. Protective shield for Earth from the sun's harmful ultraviolent (UV) rays in the stratosphere layer...

  1. A nurse is evaluating a newly licensed nurse who is administering a vitamin K injection to a new- born. Which of the following actions by the newly licensed nurse indicates understanding of the teach- ing? (SATA) a. Applies gentle pressure at the site after injection b. Aspirates the syringe for blood return after needle insertion c. Selects the dorsogluteal site to administer the injec- tion d. Inserts the needle at a 45° angle - IM should be 90 e. Cleans the injection site wit...

1. The efficiency of the refrigerant cycle is affected by the operation of the condenser. of the following, a more efficient centrifugal compressor operation results from Answer: Lowering the condensing pressure 2. The heat removed from the refrigerant in a condenser is Answer: Sensible and Latent Heat 3. The refrigerant unit that you have been assigned to is being taken out of service for a major repair. You have been assigned to withdraw refrigerant for storage in suitable containers. Accord...

Which of the following best describes the refrigerant recovery process from an R-123 system? - ANSWER Start with liquid removal and then switch over to vapor recovery. Under ASHRAE Standard 34, R-134a is classified as; - ANSWER A1 When charging a low-pressure system, refrigerant should be introduced to the system as a vapor to raise the system's saturation temperature to a minimum of; - ANSWER 36 Degrees In a low-pressure chiller, air and other non-condensables collect at the; - ANSWER...

Which of the following best describes the refrigerant recovery process from an R-123 system? - ANSWER Start with liquid removal and then switch over to vapor recovery. Under ASHRAE Standard 34, R-134a is classified as; - ANSWER A1 When charging a low-pressure system, refrigerant should be introduced to the system as a vapor to raise the system's saturation temperature to a minimum of; - ANSWER 36 Degrees In a low-pressure chiller, air and other non-condensables collect at the; - ANSWER...

CFC TYPE 1 Questions and Answers 2023 What is an example of a CFC refrigerant? R-12 What compounds have the highest ozone depletion potential? CFCs CFC refrigerants contain: Chlorine, Fluorine, Carbon Ozone above the earth consist of: Molecules containing 3 oxygen atoms What atom of CFC molecule causes depletion of the ozone? Chlorine What type problem is ozone depletion in the stratosphere? Global What is being done to stop damage to the ozone? ...

Which of the following best describes the refrigerant recovery process from an R-123 system? - ANSWER Start with liquid removal and then switch over to vapor recovery. Under ASHRAE Standard 34, R-134a is classified as; - ANSWER A1 When charging a low-pressure system, refrigerant should be introduced to the system as a vapor to raise the system's saturation temperature to a minimum of; - ANSWER 36 Degrees In a low-pressure chiller, air and other non-condensables collect at the; - ANSWER...

EPA 608 Core Test Sample Questions As of what date did it become unlawful to release Class 1 and Class II refrigerants to the atmosphere? a. July 1, 1992 b. July 1, 1993 c. November 14, 1994 d. January 1, 1996 - CORRECT ANSWER-a. July 1, 1992 What is the ozone layer and why is it important to us on Earth? a. Thin layer of R-22 in the atmosphere that filters UV. b. Protective shield for Earth from the sun's harmful ultraviolent (UV) rays in the stratosphere layer that extends about 6 t...