Effectiveness for counterflow heat exchanger

NTU Capacity rate ratio, Cmin/Cmax

0

0.25

0.50

0.75

1.00

0

0

0

0

0

0

0.25

0.221

0.216

0.209

0.205

0.200

0.50

0.393

0.378

0.362

0.347

0.333

0.75

0.528

0.502

0.476

0.452

0.429

1.00

0.632

0.598

0.565

0.532

0.500

1.25

0.713

0.674

0.635

0.598

0.556

1.50

0.777

0.735

0.691

0.645

0.600

1.75

0.826

0.784

0.737

0.687

0.636

2.00

0.865

0.823

0.774

0.722

0.667

2.50

0.918

0.880

0.832

0.776

0.714

3.00

0.950

0.919

0.874

0.817

0.750

3.50

0.970

0.945

0.905

0.848

0.778

4.00

0.982

0.962

0.927

0.873

0.800

4.50

0.989

0.974

0.944

0.893

0.818

5.00

0.993

0.982

0.957

0.909

0.833

¥

1

1

1

1

1