« previous next »

Author Question: New residential air conditioning systems now primarily use: A) HFC-134a. B) CFC-12. C) HFC-410A. ... (Read 110 times)

yoooooman

  • Hero Member
  • *****
  • Posts: 557
on: Jul 26, 2018
New residential air conditioning systems now primarily use:
 
  A) HFC-134a. B) CFC-12. C) HFC-410A. D) HCFC-22.

Question 2

The standard industry number designation for each refrigerant is assigned by:
 
  A) RSES - Refrigeration Service Engineer's Society.
  B) ASHRAE - American Society of Heating Refrigeration and Air Conditioning Engineers.
  C) NIST - National Institute for Standards and Testing.
  D) AHRI - Air Conditioning Heating and Refrigeration Institute.


BUTTHOL369

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Jul 26, 2018
Answer to Question 1

C

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

Did you know?

Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

Did you know?

Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

Root Systems of Eudicots and Monocots Root Systems of Eudicots and Monocots
Sickle cell anemia. The clinical manifestations of sickle cell anemia result from pathologic changes Sickle cell anemia. The clinical manifestations of sickle cell anemia result from pathologic changes
Effects of the sympathetic and parasympathetic nervous systems Effects of the sympathetic and parasympathetic nervous systems
Pavlov’s Salivary Conditioning Experiment (2 of 2) Pavlov’s Salivary Conditioning Experiment (2 of 2)
Large-scale circulation systems produce global climate patterns Large-scale circulation systems produce global climate patterns
All human organ systems and their functions (Part 1) All human organ systems and their functions (Part 1)
Video: Activation Energy - Valence Electrons

For a complete list of videos, visit our video library