Chance Linarez

List of Analysis

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i. A-1: Energy Leaving Jet and Entering Tank

• 19kW is the amount of energy leaving the water jet nozzle and entering the water tank.

• Assume 20 kW is the required amount of energy the heat exchanger needs to remove from tank water.

ii. A-2: Time Required for Given Water Temperature

• 8 hours to reach 38°C (100°F) (starting at room temperature)

• Water is at 46°C (115°F) after 12 hours

iii. A-3: Analysis of Water Flow Rate Through Heat Exchanger

• Calculated flow rate of water through heat exchanger is 0.319 kg/s.

iv. A-4: Analysis of Output air temperature of Heat Exchanger.

• When the heat exchanger is used in 27 °C air temperature, the air exiting the heat exchanger will be 31°C.

v. A-5: Analysis of Required Surface Area

• The required surface area for the heat exchanger when operating in 27°C air is 2.7m².

vi. A-6: Surface Area of Fins

• The total surface area of all the fins is 1.7m².

vii. A-7: Analysis of Heat Exchanger Unit Weight

• The weight of the entire heat exchanger unit will be around 110 lb.  

viii. A-8: Larger Flow Rate Analysis

• Using a larger flow rate will reduce the heat transfer rate of the heat exchanger to around 12 kW. A larger flow rate will be used when running at night when air temperature is much cooler.

ix. A-9: Stand Bottom Beam Analysis

• The thickness of angle iron required is 3/16 inches.

x. A-10: Upper Limit for Heat Transfer Rate

• Maximum possible heat transfer in this heat exchanger is 33.25 kW.

xi. A-11: Analysis of Heat Exchanger Effectiveness

• The calculated heat exchanger effectiveness is 0.8.

xii. A-12: Analysis of Fin Efficiency and Effectiveness

• Fin efficiency is 30% and fin effectiveness is 2.68.