What is hcfcs - Study guides, Class notes & Summaries

Where is the stratosphere? - 10 to 30 miles Where is ozone located? - stratosphere What does an ozone molecule consist of? - 3 oxygen atoms The ozone layer protects us from... - ultraviolet radiation The ozone layer helps to maintain... - stable earth temperatures Depletion of ozone causes... - crop loss, eye disease, skin cancer, reduced marine life, deforestation, increased ground level ozone. What type of refrigerants, when released into the atmosphere, cause ozone depletion...

What characteristic or characteristics of CFCs make them more likely than other chlorine compounds to reach the stratosphere? - CORRECT ANSWER Dont disolve iin water Each chlorine atom in the stratosphere can destroy how many ozone molecules? - CORRECT ANSWER 100,000 ozone molecules Which refrigerant contains a CFC? R500, R12, R113 or R11? - CORRECT ANSWER Theyre all CFC's HYDROCHLORIC FLORICCARBON (HCFC) refrigerant contain? - CORRECT ANSWER Hydrogen, chlorine, ...

Removing refrigerant in any condition from a system and storing it in an external container without necessarily testing or processing it in any way defines A) Recycling B) Recovering C) Reclaiming D) Restoring - B) Recovering One should NEVER heat a refrigerant storage or recovery tank with an open flame because: A) it can result in venting refrigerant to the atmosphere B) the tank may explode, causing serious injury to people nearby C) refrigerant in the tank may decompose, f...

what is CFCs? - answer-Chlorofluorocarbons (Chlorine, Fluorine, and carbon) What is HCFCs? - answer-Hydrochlorofluorocarbons (hydrogen, chlorine, fluorine, and carbon) What is ASHRAEs? - answer-The American Society of Heating Refrigerating and Airconditioning Engineers. A global professional association seeking to advance heating, ventilation, airconditioning and refrigeration systems. What is the greatest effect in the stratosphere? - answer-The greatest effect ...

HVAC: EPA 608 Certification Study Guide || 100 Questions|| Accurate 100%Are there drop-in replacements for R-12 systems? Why or why not? - ANSWER 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? - ANSWER Ester based oils and they do not mix with other oils What type of lubricant is used with HCFCs? - ANSWER Alkylbenzene lubricant What is difference b/w ternary blend a az...

EPA 608 Certification Exam Questions and answers Ozone depletion is caused by _ in HCFC refrigerants - ANSWERS Chlorine CFCs and HCFCs _ making them capable of reaching the stratospheric ozone - ANSWERS do not dissolve in water or easily break down in the atmosphere How many ozone molecules are destroyed by one chlorine atom - ANSWERS 100,000 ozone molecules The stratospheric ozone layer protects us from _ - ANSWERS ultraviolet radiation from the sun Which health effect increases fro...

As of what date did it become unlawful to release Class 1 and Class II refrigerants to the atmosphere? July 1, 1992. What is the ozone layer and why is it important to us on Earth? Protective shield for Earth from the sun's harmful ultraviolent (UV) rays in the stratosphere layer that extends about 6 to 30 miles above earth. The atom found in CFC and HCFC refrigerants that destroys ozone in the stratosphere is? Chlorine. What is an ozone molecule made of? Three oxygen a...

Lose their EPA certification, be fined, be required to appear in Federal court. Refrigeration technicians who violate the Clean Air Act can: - recovery and recycling. After 1995, any supplies of CFC refrigerants to service existing units in the USA can only come from: - the same system or other systems owned by the same person without restriction. Refrigerant that is recovered can be returned to: - has been chemically analyzed and the refrigerant meets the ARI-700 standar...

EPA 608 universal Exam/ 151 Questions with Correct Solutions/ . Terms like: 1. Which refrigerant is an HCFC-Answer: R-123, R-124, R-22 2. What statement is true about an azeotropic refrigerant mixture-Answer: It is a mixture that acts like a single-component refrigerant over its entire range. 3. Chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) have which of the following in common-Answer: It is a mixture that acts like a single-component refrigerant over its entire range.

What is the Ozone Layer? What is the difference between ozone in the stratosphere and on the ground level? Ozone in the stratosphere between 7 and 28 miles above earth. On the ground level ozone is a harmful pollutant, in the stratosphere it is a protective shield. What is ODP? Ozone Depletion Potential It is the ability of a substance to destroy ozone in the stratosphere What is GWP? Global Warming Potential. The GWP of a refrigerant is its global warming impact rel...