What are the efficiency requirements for the Energy Star label to be awarded for an air-to-air heat pump?
What will be an ideal response?
Air- to-air Packaged Units: an EER of 12 or greater, an SEER of 14 or greater, and an HSPF of 8 or greater
For air to air split systems the requirements are an EER of 12.5 or greater, an SEER of 15 or better, and an HSPF of 8.5 or better.
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Assume C and D function independently. For the system to function, either C or D must function.
A system contains two components, C and D, connected in parallel as shown in the diagram.
a. If the probability that C fails is 0.08 and the probability that D fails is 0.12, find the probability that the system functions.
b. If both C and D have probability p of failing, what must the value of p be so that the probability that the system functions is 0.99?
c. If three components are connected in parallel, function independently, and each has probability p of failing, what must the value of p be so that the probability that the system functions is 0.99?
d. If components function independently, and each component has probability 0.5 of failing, what is the minimum number of components that must be connected in parallel so that the probability that the system functions is at least 0.99?
The agriscience skill ____________________ is a record of skills developed by a student and the level of competence in each area
Fill in the blank(s) with the appropriate word(s).During copulation, the egg secretes a chemical that attracts the sperm toward the egg
Indicate whether the statement is true or false
Which of the following are fundamental SI units?
a. seconds, meters, liters b. seconds, meters, grams c. Newton, seconds, kilograms d. seconds, kilograms, Kelvins e. hours, meters, Watts