A water cooling system takes cold air to cool water from 82°C to 72°C. The mass flow rate and specific heat of water is 0.4 kg/s and 4.18 kJ/kg°C. During typical operation cycles, air enters at 20°C and exits at 60°C. The cooling system is actually a concentric tube counter-flow heat exchanger with effective heat transfer surface area of 2.8 m². What is the overall heat transfer coefficient of the heat exchanger?

A water cooling system takes cold air to cool water from 82°C to 72°C. The mass flow rate and specific heat of water is 0.4 kg/s and 4.18 kJ/kg°C. During typical operation cycles, air enters at 20°C and exits at 60°C. The cooling system is actually a concentric tube counter-flow heat exchanger with effective heat transfer surface area of 2.8 m². What is the overall heat transfer coefficient of the heat exchanger?

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

Chapter44: Geothermal Heat Pumps

Section: Chapter Questions

Problem 1RQ: Geothermal heat pumps, or water-source heat pumps, are classified as either _____loop or _____loop...

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A water cooling system takes cold air to cool water from 82°C to 72°C. The mass flow rate and specific heat of water is 0.4 kg/s and 4.18 kJ/kg°C. During typical operation cycles, air enters at 20°C and exits at 60°C. The cooling system is actually a concentric tube counter-flow heat exchanger with effective heat transfer surface area of 2.8 m². What is the overall heat transfer coefficient of the heat exchanger? 171.22 W/m²K к
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