RefrigerationCâu 74 / 110
The saturation temperature corresponding to a measured pressure is found using what?
a.The unit nameplate
b.A duct calculator
c.A pressure-temperature (PT) chart or app for the specific refrigerant
d.The electrical schematic
Giải thích
A pressure-temperature chart lists the saturation temperature for each pressure of a given refrigerant. Technicians use it to calculate superheat and subcooling from gauge readings. Each refrigerant has its own PT relationship, so the correct chart must be used.
Luyện miễn phí toàn bộ 110 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- A refrigerant metering device such as a fixed orifice or TXV creates what effect on the refrigerant?
- Which category of refrigerants is being phased down under regulations due to high global warming potential?
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- When comparing the two sides of an operating system, the discharge line is normally which relative to the suction line?
- A reciprocating compressor changes the refrigerant state by doing what?
- High condenser (head) pressure with normal charge is most often caused by what?
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