Heat Exchanger Sizing & Rating

Size the required area with LMTD or rate an existing exchanger with epsilon-NTU.

Flow arrangement

UA [W/K] Overall coefficient × area.

Hot stream C_h = ṁ·c_p [W/K]

Hot inlet T_h,in [°C]

Cold stream C_c = ṁ·c_p [W/K]

Cold inlet T_c,in [°C]

Flow arrangement

Duty q [kW]

Overall U [W/(m²·K)]

Hot in T_h,in [°C]

Hot out T_h,out [°C]

Cold in T_c,in [°C]

Cold out T_c,out [°C]

Standard textbook relations for coursework and preliminary design. Verify results for professional work.

Grow with Dr. Shikha

Dr. Shikha A. Ebrahim is an Associate Professor, researcher, inventor, mentor, and speaker helping students, researchers, educators, and institutions grow from curiosity to rigorous, ethical excellence.

LinkedIn Google Scholar shikha.ebrahim@ku.edu.kw

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