= 1.0 Btu/lbm-°F) of a diesel engine from 190°F to 140°F, using air (c = 0.245 Btu/lbm F) with an inlet 11-80E A single-pass crossflow heat exchanger is used to cool jacket water (cp temperature of 90°F. Both airflow and water flow are unmixed. If the water and air mass flow rates are 92,000 lbm/h and 400,000 lbm/h, respectively, determine the log mean temperature difference for this heat exchanger. FIGURE P11-80E Air flow (иктіхеd) Water flow (апmixed)

Question
= 1.0 Btu/lbm-°F) of a diesel engine from 190°F to 140°F, using air (c = 0.245 Btu/lbm F) with an inlet
11-80E A single-pass crossflow heat exchanger is used to cool jacket water (cp
temperature of 90°F. Both airflow and water flow are unmixed. If the water and air mass flow rates are 92,000 lbm/h and 400,000 lbm/h, respectively, determine the log mean temperature
difference for this heat exchanger.
FIGURE P11-80E
Air flow
(иктіхеd)
Water flow
(апmixed)

Image Transcription

= 1.0 Btu/lbm-°F) of a diesel engine from 190°F to 140°F, using air (c = 0.245 Btu/lbm F) with an inlet 11-80E A single-pass crossflow heat exchanger is used to cool jacket water (cp temperature of 90°F. Both airflow and water flow are unmixed. If the water and air mass flow rates are 92,000 lbm/h and 400,000 lbm/h, respectively, determine the log mean temperature difference for this heat exchanger. FIGURE P11-80E Air flow (иктіхеd) Water flow (апmixed)

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