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Category > Engineering Posted 17 May 2017 My Price 7.00

One method of passive solar heating is to stack gallons

1. In order to cool 1 ton of water at 20°C in an insulated tank, a person pours 80 kg of ice at 258C into the water. Determine (a) the final equilibrium temperature in the tank and (b) the exergy destroyed during this process. The melting temperature and the heat of fusion of ice at atmospheric pressure are 0°C and 333.7 kJ/kg, respectively. Take T0 = 20°C.

2. One method of passive solar heating is to stack gallons of liquid water inside the buildings and expose them to the sun. The solar energy stored in the water during the day is released at night to the room air, providing some heating. Consider a house that is maintained at 22°C and whose heating is assisted by a 350-L water storage system. If the water is heated to 45°C during the day, determine the amount of heating this water will provide to the house at night. Assuming an outside temperature of 5°C, determine the exergy destruction associated with this process.

 

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Alpha Geek
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Status NEW Posted 17 May 2017 10:05 AM My Price 7.00

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Attachments

file 1495015328-Answer.docx preview (211 words )
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