Butterfly shutters and sliding sleeves are examples of _________________________ and are used on atmospheric type gas burners.
Fill in the blank(s) with the appropriate word(s).
primary air adjusters
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A wind turbine with a rotor diameter of 40 m produces 90 kW of electrical power when the wind speed is 8 m? s?1. The density of air impinging on the turbine is 1.2 kg? m?3. What fraction of the kinetic energy of the wind impinging on the turbine is converted to electrical energy?
What will be an ideal response?
A rigid, nonconducting tank with a volume of 4 
is divided into two unequal parts by a thin membrane. One side of the membrane, representing 1/3 of the tank, contains nitrogen gas at 6 bar and 100°C, and the other side, representing 2/3 of the tank, is evacuated. The membrane ruptures and the gas fills the tank.
(a) What is the final temperature of the gas? How much work is done? Is the process reversible?
(b) Describe a reversible process by which the gas can be returned to its initial state. How much work is done?
Assume nitrogen is an ideal gas for which 
and 
Along with pollutants, what gas must be monitored within a greenhouse and why?
What will be an ideal response?
What is hydroponics?
What will be an ideal response?