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HVAC EPA CORE EXAM WITH GUARANTEED ACCURATE ANSWERS
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HVAC EPA CORE EXAM HVAC EPA CORE EXAM WITH GUARANTEED ACCURATE ANSWERS An ozone molecule consists of - Accurate Answer3 oxygen atoms Depletion of Ozone in the stratosphere causes: - Accurate Answer1. Crop loss 2. Increase in eye disease 3. Skin cancer 4. Reduced marine life 5. Defore...

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  • July 24, 2024
  • 6
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

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  • HVAC EPA CORE
  • HVAC EPA CORE

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HVAC EPA CORE EXAM HVAC EPA CORE EXAM WITH GUARANTEED ACCURATE ANSWERS
An ozone molecule consists of - Accurate Answer ✅✅3 oxygen atoms
Depletion of Ozone in the stratosphere causes: - Accurate Answer ✅✅1. Crop loss
2. Increase in eye disease
3. Skin cancer
4. Reduced marine life
5. Deforestation
6. Increased ground level ozone
When released into the atmosphere deplete the Ozone layer - Accurate Answer ✅✅CFC and HFC
What happens when a chlorine atom meets with an Ozone molecule? - Accurate Answer ✅✅it takes 1 oxygen atom away from the Ozone, forming Chlorine Monoxide
___ chlorine atom can destroy ________ ozone molecules - Accurate Answer ✅✅one chlorine; 100,000 Ozone molecules the chlorine in CFC's will neither dissolve in water nor - Accurate Answer ✅✅break down into compounds that dissolve in water
measurement of CFC's and HCFC's ability to destroy ozone is - Accurate Answer ✅✅Ozone Depletion Potential
the compound gauge (blue) and the high pressure gauge (red) are connected to the manifold - Accurate Answer✅✅the manifold is connected by hoses to access ports to measure system pressures
EPA regulations require that hoses be equipped with - Accurate Answer ✅✅low loss fittings that will minimize refrigerant loss when hoses are disconnected
(1) the metering device causes a reduction in pressure, and therefore.. - Accurate Answer ✅✅a reduction in saturation temperature
(2) Heat is absorbed in the evaporator and causes the refrigerator to - Accurate Answer ✅✅boil from liquid to vapor
(3)at the outlet of the evaporator, the refrigerant is now a - Accurate Answer ✅✅low temperature, low pressure vapor
(4) refrigerant vapor travels to the inlet of the compressor, the refrigerant vapor is then - Accurate Answer✅✅compressed and moves the condenser
(5) as the refrigerant expels heat, - Accurate Answer ✅✅the refrigerant condenses to a liquid
A system that uses a thermostatic expansion valve is usually equipped with a(n) ________, which would be located in the liquid line directly following the condenser - Accurate Answer ✅✅receiver
a system that uses a capillary tube or fixed bore metering device is usually equipped with a(n) ________,
which would be located in the suction line directly following the evaporator - Accurate Answer✅✅accumulator

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