Calculate the heat transfer rate through a 1.1m2 window with U = 1.14 (W/m^2??) . The indoor and outdoor temperatures are 20? and -12?, respectively. Compare the results of this exercise with the results of Problem 11.51. How much energy will be saved if three windows with U = 4.5 1.14 (W/m^2??) are replaced with three windows with U = 1.14 1.14 (W/m^2??) for a home in a location with annual degree days of 6200?
What will be an ideal response?
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UNDERSTANDING PROCESS EQUIPMENT
Annual Fuel Utilization Efficiency, AFUE, is:
A) Calculated by operating the furnace for one hour at the manufacturer's design condition. B) The efficiency of the furnace for an entire heating season. C) The cost of operating the furnace for an entire heating season. D) Calculated by comparing a customer's gas bill to the calculated heat loss of their house.
After replacing a blown fuse in a unit disconnect, the technician should:
A) Check the resistance of every system component. B) Check the frequency and phase angle of the voltage at the unit with the unit operating. C) Swap some wires around to see if it helps. D) Check the system amp draw and compare it to the data plate rating.
What is the primary numbering system in digital applications?
A) hexadecimal B) binary C) decimal D) octal