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Suction Temperature:
42 F (5.6 C) = 37 psig (255 kPa) saturated refrigerant pressure (HFC-134a)
Condensing Temperature:
98 F (36.7 C) = 120 psig (1827 kPa) saturated refrigerant pressure (HFC-134a)
Maximum Load ∆T2:
54 – 44 = 10° F (12.2 – 6.7 = 5.5° C)
Maximum Load ∆P2:
120 – 37 = 83 psid (827 – 255 = 572 kPad)
To avoid unnecessary surge prevention, add about 10 psid (70 kPad) to ∆P2 from these
conditions:
∆T2 = 10° F (5.5° C)
∆P2 = 93 psid (642 kPad)