Find the exergy destruction in the braking process

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Reference no: EM131233646

1. If the air conditioner in the previous problem is turned off, how fast does the house heat up in K/s?

2. A disk brake of 2 kg steel and 1 kg brake pads is at 20?C. The brakes are now stopping a car, so they dissipate energy by friction and heat up to T₂ = 200?C. Assume the brake pads have specific heat of 0.6 kJ/kg-K. After this process, the disk and pads now slowly cool to the ambient, 20?C=T₃. Find the exergy destruction in the braking process (1 to 2) and in the cooling process (2 to 3).

Reference no: EM131233646

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