What type of oil delivery system is recommended when the vacuum required for lifting the oil from the tank to the furnace is 16 in Hg?
A) A two-pipe oil delivery system with a single-stage oil pump
B) A single-pipe oil delivery system with a single-stage pump
C) A two-pipe oil delivery system with a two-stage oil pump
D) A single-pipe oil delivery system with a two-stage oil pump
C
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If a pipe bracket is 3.756” wide, how wide is it in meters? Round the answer to the nearest thousandths.
The service consultant is attempting to determine the capacity for tomorrow. Calculated is: 50 target hours for Friday LESS 10 left over hours = 40 hours capacity for Friday less 39 hours already sold = +1 hour left over. The 1 hour left over represents:
A. Over capacity B. Under capacity C. Breakeven D. None of the above
Diversion ____________________ are cut into the area surrounding livestock facilities to prevent runoff with waste materials from getting into streams
Fill in the blank(s) with correct word
Answer the following statement(s) true (T) or false (F)
1. If properly designed, a closed-loop hydronic system should rid itself of most air within a few days of initial start-up. 2. The oxygen that causes corrosion is the same oxygen that forms water molecules. 3. Circulators transfer maximum head energy to incompressible fluids (e.g., liquids). A mixture of water and air is an example of an incompressible fluid. 4. Air has much lower specific heat and density than water. 5. Circulators with internal spring-load check valves installed in vertical piping with upward flow are especially susceptible to air pockets.