l water flowing at 14 kg.s¹ entering at 18 monia with a mass flow rate of 18 kg.s-¹ perature and pressure of -12°C and 650 L pectively. The heat exchanger is to use th he liquid form, so no evaporation can be kPa absolute ania Qu essure
l water flowing at 14 kg.s¹ entering at 18 monia with a mass flow rate of 18 kg.s-¹ perature and pressure of -12°C and 650 L pectively. The heat exchanger is to use th he liquid form, so no evaporation can be kPa absolute ania Qu essure
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Heat Exchangers
Heat exchangers are the types of equipment that are primarily employed to transfer the thermal energy from one fluid to another, provided that one of the fluids should be at a higher thermal energy content than the other fluid.
Heat Exchanger
The heat exchanger is a combination of two words ''Heat'' and ''Exchanger''. It is a mechanical device that is used to exchange heat energy between two fluids.
Question
Transcribed Image Text:2. A single-shell, four-tube-pass heat exchanger is used to
cool water flowing at 14 kg.s¹¹ entering at 18°C using
ammonia with a mass flow rate of 18 kg.s¹ and an entry
temperature and pressure of -12°C and 650 kPa, absolute,
respectively. The heat exchanger is to use the ammonia
in the liquid form, so no evaporation can be allowed. At
620 kPa, absolute pressure, ammonia evaporates at
10.5°C. The overall heat transfer coefficient of the heat
exchanger is 568 W.m²2 and the heat transfer surface area
is 75 m². Determine the outlet temperatures of the hot
and cold streams. Identify whether the heat exchanger,
operating under the conditions shown, satisfies the
requirement that the ammonia remains liquid throughout
the process.
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