Mechanical codes limit the amount of refrigerant a system can contain if it is located in an occupied space. Because VRF systems are connected to one large refrigerant network that would release the entire charge in case of a leak, some codes limit refrigerant 410A charge to ________ pounds per 1,000 cubic feet of space
A) 25 B) 50 C) 30 D) 15
A
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A device that uses electromagnetic induction to transfer electrical energy from one circuit to another is a(n) _____.
a. coil b. inductor c. transformer d. capacitor
Given the traverse shown in Figure P7–11, place the following items in the table:
Bearing of each property line (course) ? Distance of each course ? Cosine of each bearing angle ? Sine of each bearing angle ? Latitude of each course ? Departure of each course What will be an ideal response?
The side opposite the 90-degree angle of a right triangle is the _____.
a. opposite side b. adjacent side c. hypotenuse d. Pythagorean side
Feng Seawater Desalination Systems has estabÂlished a capital investment limit of $800,000 for next year for projects that target improved recovery of highly brackish groundwater. All projects have a 4?year life and the MARR is 10% per year. (a) Select any or all of the projects. (b) Project Z is a favorite of Mr. Feng. Determine the minimum NCF necessary to make Z the economically best project. (c) Use a spreadsheet to answer the two parts above.
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