COSC 325 Houston (Mechanical) Exam Study Guide
Review Complete Questions And Correct detailed
answers well verifaids Graded A+
Enthalpy (h) - ✔✔CORRECT DETAILED ANSWERS WELL
VERIFAID✔✔->>The total heat contained in a substance measured
from a baseline of 32 degrees farenheit
Where is relative humidity found on a psychometric chart? -
✔✔CORRECT DETAILED ANSWERS WELL VERIFAID✔✔->>the
curving lines that run from the bottom left side of the chart up to the
right
forced air system - ✔✔CORRECT DETAILED ANSWERS WELL
VERIFAID✔✔->>fuel heats air, which is blown through ducts and
vents; cool air is returned to the furnace to be reheated
,Three must common types of furnaces - ✔✔CORRECT DETAILED
ANSWERS WELL VERIFAID✔✔-
>>upflow, horizontal, and downflow (counterflow)
Upflow Furnace - ✔✔CORRECT DETAILED ANSWERS WELL
VERIFAID✔✔->>return air is supplied at the bottom of the unit and
the heated air is delivered to the bonnet above the furnace where it is
distributed through ductwork
horizontal flow furnace - ✔✔CORRECT DETAILED ANSWERS WELL
VERIFAID✔✔->>furnace in which
heated air flows horizontally as it leaves the furnace
Downflow Furnace - ✔✔CORRECT DETAILED ANSWERS WELL
VERIFAID✔✔->>furnace is typ. located on first floor and heated air is
pushed down into ductwork located in a crawl space or basement.
Blower - ✔✔CORRECT DETAILED ANSWERS WELL VERIFAID✔✔-
>>pump-like mechanism which generates airflow
blowers used in forced-air systems - ✔✔CORRECT DETAILED
ANSWERS WELL VERIFAID✔✔->>propeller, centrifugal, axial
, propeller blower - ✔✔CORRECT DETAILED ANSWERS WELL
VERIFAID✔✔->>blades mounted on a central bulb
centrifugal blower - ✔✔CORRECT DETAILED ANSWERS WELL
VERIFAID✔✔->>Consists of a scroll, blower wheel, shaft, and inlet
vanes
axial flow blower - ✔✔CORRECT DETAILED ANSWERS WELL
VERIFAID✔✔->>-Consists of a blower wheel that works like turbine
wheel
-Used in medium to high pressure forced air heating systems
Static Pressure - ✔✔CORRECT DETAILED ANSWERS WELL
VERIFAID✔✔->>pressure that acts through weight only with no
motion
heat exchanger - ✔✔CORRECT DETAILED ANSWERS WELL
VERIFAID✔✔->>A device that transfers heat from one substance to
another without allowing substances to mix (think radiator)
Low-efficiency filter - ✔✔CORRECT DETAILED ANSWERS WELL
VERIFAID✔✔->>40% of large particulate matter
Review Complete Questions And Correct detailed
answers well verifaids Graded A+
Enthalpy (h) - ✔✔CORRECT DETAILED ANSWERS WELL
VERIFAID✔✔->>The total heat contained in a substance measured
from a baseline of 32 degrees farenheit
Where is relative humidity found on a psychometric chart? -
✔✔CORRECT DETAILED ANSWERS WELL VERIFAID✔✔->>the
curving lines that run from the bottom left side of the chart up to the
right
forced air system - ✔✔CORRECT DETAILED ANSWERS WELL
VERIFAID✔✔->>fuel heats air, which is blown through ducts and
vents; cool air is returned to the furnace to be reheated
,Three must common types of furnaces - ✔✔CORRECT DETAILED
ANSWERS WELL VERIFAID✔✔-
>>upflow, horizontal, and downflow (counterflow)
Upflow Furnace - ✔✔CORRECT DETAILED ANSWERS WELL
VERIFAID✔✔->>return air is supplied at the bottom of the unit and
the heated air is delivered to the bonnet above the furnace where it is
distributed through ductwork
horizontal flow furnace - ✔✔CORRECT DETAILED ANSWERS WELL
VERIFAID✔✔->>furnace in which
heated air flows horizontally as it leaves the furnace
Downflow Furnace - ✔✔CORRECT DETAILED ANSWERS WELL
VERIFAID✔✔->>furnace is typ. located on first floor and heated air is
pushed down into ductwork located in a crawl space or basement.
Blower - ✔✔CORRECT DETAILED ANSWERS WELL VERIFAID✔✔-
>>pump-like mechanism which generates airflow
blowers used in forced-air systems - ✔✔CORRECT DETAILED
ANSWERS WELL VERIFAID✔✔->>propeller, centrifugal, axial
, propeller blower - ✔✔CORRECT DETAILED ANSWERS WELL
VERIFAID✔✔->>blades mounted on a central bulb
centrifugal blower - ✔✔CORRECT DETAILED ANSWERS WELL
VERIFAID✔✔->>Consists of a scroll, blower wheel, shaft, and inlet
vanes
axial flow blower - ✔✔CORRECT DETAILED ANSWERS WELL
VERIFAID✔✔->>-Consists of a blower wheel that works like turbine
wheel
-Used in medium to high pressure forced air heating systems
Static Pressure - ✔✔CORRECT DETAILED ANSWERS WELL
VERIFAID✔✔->>pressure that acts through weight only with no
motion
heat exchanger - ✔✔CORRECT DETAILED ANSWERS WELL
VERIFAID✔✔->>A device that transfers heat from one substance to
another without allowing substances to mix (think radiator)
Low-efficiency filter - ✔✔CORRECT DETAILED ANSWERS WELL
VERIFAID✔✔->>40% of large particulate matter
