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Two ideal Carnot heat engines have the same efficiency.One operates between 5.0 × 102 K and 3.0 × 102 K,and the other between 4.0 × 102 K and some lower temperature.What is the lower temperature?
Green Roofs
Rooftops covered with vegetation and soil or a growing medium, installed over a waterproof membrane, to improve building insulation, reduce urban heat islands, and create habitats.
Geothermal Heat Pumps
Systems that use the stable underground temperature to provide heating, cooling, and hot water for buildings.
Geothermal Exchange
The process of using the Earth's constant underground temperature to heat and cool buildings.
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