Below data was obtained from an experimental activity for a parallel pipe heat exchanger. Arrangement: counterflow (cold fluid in annular and hot fluid in tube). Mass flow rate: - Hot fluid: 1.03 kg/s - Cold fluid: 0.91 kg/s Temperatures: - Hot fluid inlet (Th.1): 80.5 +/- 10% °C - Hot fluid outlet (Th2): 64.0 +/- 10% °C - Cold fluid inlet (Tc1): 20.0 +/- 10% °c - Cold fluid outlet (Tc2): 41.0 +/- 10% °C Assume c, constant and equal to 4.2 kJ/kg-K. 1. State assumptions (at least 9 unique ones) and include references. 2. What is the log mean temperature difference in °C? 3. What is the heat transfer rate on the cold side in kW? Heat added or lost on cold side? 4. What is the heat transfer rate on the hot side in kW? Heat added or lost on hot side? 5. What is the effectiveness of the heat exchanger for the given conditions? 6. Calculate the propagation of uncertaintv in kW for part 3 (heat transfer rate on the cold side) a (heat transfer rate on the hot side).
Below data was obtained from an experimental activity for a parallel pipe heat exchanger. Arrangement: counterflow (cold fluid in annular and hot fluid in tube). Mass flow rate: - Hot fluid: 1.03 kg/s - Cold fluid: 0.91 kg/s Temperatures: - Hot fluid inlet (Th.1): 80.5 +/- 10% °C - Hot fluid outlet (Th2): 64.0 +/- 10% °C - Cold fluid inlet (Tc1): 20.0 +/- 10% °c - Cold fluid outlet (Tc2): 41.0 +/- 10% °C Assume c, constant and equal to 4.2 kJ/kg-K. 1. State assumptions (at least 9 unique ones) and include references. 2. What is the log mean temperature difference in °C? 3. What is the heat transfer rate on the cold side in kW? Heat added or lost on cold side? 4. What is the heat transfer rate on the hot side in kW? Heat added or lost on hot side? 5. What is the effectiveness of the heat exchanger for the given conditions? 6. Calculate the propagation of uncertaintv in kW for part 3 (heat transfer rate on the cold side) a (heat transfer rate on the hot side).
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:Below data was obtained from an experimental activity for a parallel pipe heat exchanger.
Arrangement:
counterflow (cold fluid in annular and hot fluid in tube).
Mass flow rate:
- Hot fluid: 1.03 kg/s
- Cold fluid: 0.91 kg/s
Temperatures:
- Hot fluid inlet (Th.1): 80.5 +/- 10% °C
- Hot fluid outlet (Th2): 64.0 +/- 10% °C
- Cold fluid inlet (Te1): 20.0 +/- 10% °C
- Cold fluid outlet (Tc2): 41.0 +/- 10% °C
Assume cp constant and equal to 4.2 kJ/kg-K.
1. State assumptions (at least 9 unique ones) and include references.
2. What is the log mean temperature difference in °C?
3. What is the heat transfer rate on the cold side in kW? Heat added or lost on cold side?
4. What is the heat transfer rate on the hot side in kW? Heat added or lost on hot side?
5. What is the effectiveness of the heat exchanger for the given conditions?
6. Calculate the propagation of uncertaintv in kW for part 3 (heat transfer rate on the cold side) and part 4
(heat transfer rate on the hot side).
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