What is name for grandmother in German?
1 answer:
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Answer:
Explanation:
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Answer:
The amount of money saved is $22,075.2
Explanation:
The solar voltaic energy in Phoenix, S = 6,720 Wh/m²/day
The area on the roof available for solar panels, A = 500 m²
The percentage of the energy received by the solar panels converted into electricity, η = 15% = 0.15
The cost of electricity, C = $0.12/kWh
The number of days in a year, t = 365 days
Therefore, the maximum area covered by the solar panel = A = 500 m²
The total solar photovoltaic energy received by the solar panels, 'E', in a year is given as follows;
E = S × A × t
By plugging in the values of the variables, we get;
E = 6,720 Wh/m²/day × 500 m² × 365 days = 1,226,400,000 Wh
The electrical energy generated, = η × E
∴ = 0.15 × 1,226,400,000 Wh = 183960000 Wh = 183,960 kWh
The amount of money saved = The cost of electricity generated = C ×
C × = $0.12/kWh × 183,960 kWh = $22,075.2
∴ The amount of money saved = C × = $22,075.2
Answer:
4.8°C
Explanation:
The rate of heat transfer through the wall is given by:
Assumptions:
1) the system is at equilibrium
2) the heat transfer from foam side to interface and interface to block side is equal. There is no heat retention at any point
3) the external surface of the wall (concrete block side) is large enough that all heat is dissipated and there is no increase in temperature of the air on that side
temperature at the interface
Solving for will give the temperature at the interface: