Geothermal heat pumps use the ____________________ or ____________________ as a heat source or a heat sink.
Fill in the blank(s) with the appropriate word(s).
Earth, Earth's water
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____ inspection is used to locate minute surface cracks and porosity.
A. Visual B. Magnetic particle C. Penetrant D. Radiographic
The compounds A and B form non-ideal solutions in the liquid phase. At 50 ?C, a mixture of A and B has an EXCESS molar enthalpy as given below:
The heat capacities of the liquids are modeled as constant. Both are equal to CP=50 J/mol-K.
In a steady-state, constant pressure process, 1000 mol/min of pure A at 25 ?C is mixed with 500 mol/min of pure B at 35 ?C. The mixture then enters a heat exchanger in which the mixture is heated to 50 ?C.
A. Determine the rate at which heat is added to the heat exchanger.
B. If we are using a reference state in which the molar enthalpy, ?H, of pure A and pure B are both 0 at a temperature of 25 ?C, then what is the partial molal enthalpy, ¯H, of compound A in the mixture that is leaving the heat exchanger?
The camshaft controls the rate at which the engine breathes.
Answer the following statement true (T) or false (F)
The secondary lamellae are:
a. Small, round orbs c. Thick, flat plates b. Large, round orbs d. Thin, flat plates