|
|
| Neoprene
|
|
Oil-resistant synthetic rubber product that is used to make coverings where resistance to petroleum products is needed. |
| Nesting
|
|
A method of reroofing with new asphalt shingles over old shingles in which the top edge of the new shingles is butted against the bottom edge of the existing shingle tab. |
| Net
|
|
(1) An amount that remains after a calculation where deductions are taken. (2) Commonly used to refer to profit from a venture after all expenses are deducted. |
| Net (lower) heating value (nhv)
|
|
The potential energy available in a fuel as received, taking into account the energy loss in evaporating and superheating the water in the fuel. Equal to the higher heating value minus 1050W where W is the weight of the water formed from the hydrogen in the fuel, and 1050 is the latent heat of vaporization of water, in BTU, at 77 degrees Fahrenheit. |
| Net cash flow
|
|
Income from investment property after expenses (principal, interest, taxes and insurance) are deducted. |
| Net energy efficiency production (or balance)
|
|
The amount of useful energy produced by a system less the amount of energy required to produce the fuel. |
| Net floor area
|
|
Usable floor area after deducting stairs, walls, and similar features. |
| Net free vent area
|
|
The area permitting unrestricted air flow. |
| Net generation
|
|
Equal to gross generation less electricity consumption of a power plant. |
| Net income
|
|
The amount remaining when expenses are deducted from gross income. |
|
|
|
|
|
