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. 2022 Aug 2;8(8):e10144. doi: 10.1016/j.heliyon.2022.e10144

Table 5.

U factor variation of refrigerants for the two cities.

Refrigerant
R290
R600a
City Min U (kW/m2.k) Max U (kW/m2.k) Min U (kW/m2.k) Max U (kW/m2.k)
Tehran 1.82 2.41 1.6 2.025
Bandar Abbas 1.8 2.34 1.58 1.98