Core (Universal)第 6 / 240 题
A supplier tells a technician that R-410A has an ODP of zero but a high GWP. What does GWP measure?
a.How much the gas depletes stratospheric ozone
b.How much a gas contributes to global warming relative to CO2
c.The percentage of water vapor in the refrigerant
d.The working pressure of the refrigerant in a condenser
解析
GWP means Global Warming Potential, which compares how much heat a gas traps in the atmosphere relative to carbon dioxide (CO2 = 1). R-410A has zero ODP because it contains no chlorine, but its high GWP is why HFCs are now being phased down under the AIM Act. GWP is not a measure of ozone depletion, working pressure, or water content.
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