A straight-condensing 10,500 kW turbine has a guaranteed steam rate of 6 kg/kW.hr when exhausting at 5.0 kPa. Exhaust steam enters the condenser at 90% quality, and it is estimated that fouling will decrease the overall coefficient by 30% during operation. Cooling water is available at 20 ℃, and for design purposes, 1 ½ in OD 17 BWG Brass tubes (thickness = 0.070 in, k=65 BTU/hrftF°.) are specified with 12 C° rise in cooling water, which circulates at 6 ft/s. Inside and outside film coefficients are hi=970 and ho=1478 BTU/hrft2F°. Design a condenser for this turbine, considering tube and boundary resistance as flat surfaces and neglecting any crossflow factor. Determine: a) Effective overall coefficient of heat transfer b) Volume flow rate of cooling water

A straight-condensing 10,500 kW turbine has a guaranteed steam rate of 6 kg/kW.hr when exhausting at 5.0 kPa. Exhaust steam enters the condenser at 90% quality, and it is estimated that fouling will decrease the overall coefficient by 30% during operation. Cooling water is available at 20 ℃, and for design purposes, 1 ½ in OD 17 BWG Brass tubes (thickness = 0.070 in, k=65 BTU/hrftF°.) are specified with 12 C° rise in cooling water, which circulates at 6 ft/s. Inside and outside film coefficients are hi=970 and ho=1478 BTU/hrft2F°. Design a condenser for this turbine, considering tube and boundary resistance as flat surfaces and neglecting any crossflow factor. Determine: a) Effective overall coefficient of heat transfer b) Volume flow rate of cooling water

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter22: Condensers

Section: Chapter Questions

Problem 7RQ: When a standard-efficiency air-cooled condenser is used, the condensing refrigerant will normally be...

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