Heat pump A has a SEER rating of 16 and an HSPF rating of 7 Heat pump B has a SEER rating of 14 and an HSPF rating of 9. Which heat pump heats more efficiently?
A) Heat pump A
B) Heat pump B
C) They are about the same heating efficiency by the time both the SEER and HSPF are considered
D) Neither the SEER nor the HSPF can determine which heat pump heats more efficiently
B
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Describe how a typical distillation column works.
What will be an ideal response?
The ____________________ pattern is often used for flat position welds on butt, tee, and outside corner joints, and for buildup or surfacing applications.
Fill in the blank(s) with the appropriate word(s).
John Muir helped create:
A) Sierra Club B) National parks C) An ethic of protecting and conserving nature D) All of the above
In practice, Vab is used as the measure of temperature, which is introduced to the circuit through a temperature sensor modeled by the voltage source VS2 in series with RS .
Figure P3.23 represents a temperature measurement system, where temperature T is linearly related to the voltage source VS2 by a transduction constant k. Use nodal analysis to determine the temperature.
VS2 = kT k = 10 V/?C
VS1 = 24V RS = R1 = 12 k?
R2 = 3 k? R3 = 10 k?
R4 = 24 k? Vab = ?2.524 V
