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.
1. True
2. False
3. False
4. True
5. True
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a. true b. false