MEP exam 1 study guide
VAV - answer variable air volume
VFD - answer Variable frequency drive
VSD - answer Variable speed drive
60 htz - answer frequency in the US
50 htz - answer frequency for most of South America
mechanical - answer the largest scope in construction building
diffusor - answer filters air into your building
normal air conditions - answer75 degrees with 50% humidity
exothermic - answerreleases heat
how many BTU do you release while working in the field - answer1500 BTU
watts - answerj/s
diesil - answerNOx
PM10 - answerparticulate matter
providing comfort - answeradding or subtracting energy
dew point - answertemperature when the water condenses
when we are cold, the ability to hold moisture is? - answerlow
condensation - answerby product of cooling
3 main modes - answer1)conduction
2)convection
3)radiation
convection - answerenerfy transfer through fluid motion
Ex) blowing on hot soup to cool it down, exchanging energy
, conduction - answeris the process by which energy is transmitted through collisions
between neighboring molecules
ex) fiberglass insulation, frying pan heated up by a stove
radiation - answeremission or transmission of energy in the form of waves through
space or through material medium
wet bulb globe temperature - answerused to estimate the effect of temperature,
humidity, wind speed (wind chill), and visible and infrared radiation (usually sunlight) on
humans; determine appropriate exposure levels to high temperature
WBGT - answer.7Tw+.2Tg+.1Td
Tw - answerNatural wet-bulb temperature (combined with dry-bulb temperature
indicates humidity)
Tg - answerGlobe thermometer temperature (measured with a globe thermometer, also
known as a black globe thermometer)
Td - answerDry-bulb temperature (actual air temperature)
Hair hygrometer - answerInstrument used to measure relative humidity, based on the
fact that human hair stretches as humidity increases.
conduction - answerDirect contact
sensible cooling formula - answer
R value - answerresistance to heat transfer, the higher the R value, the lower the U
value
R20 - answertypical houses
R30 - answertypical attic
U value - answerU=1/R, if .3 value for Uthen 3 value for R
good R value - answer.3
What is the R value for U? - answer3
how do you avoid conduction - answerinsulation
overall heat transfer for a window - answer.3
VAV - answer variable air volume
VFD - answer Variable frequency drive
VSD - answer Variable speed drive
60 htz - answer frequency in the US
50 htz - answer frequency for most of South America
mechanical - answer the largest scope in construction building
diffusor - answer filters air into your building
normal air conditions - answer75 degrees with 50% humidity
exothermic - answerreleases heat
how many BTU do you release while working in the field - answer1500 BTU
watts - answerj/s
diesil - answerNOx
PM10 - answerparticulate matter
providing comfort - answeradding or subtracting energy
dew point - answertemperature when the water condenses
when we are cold, the ability to hold moisture is? - answerlow
condensation - answerby product of cooling
3 main modes - answer1)conduction
2)convection
3)radiation
convection - answerenerfy transfer through fluid motion
Ex) blowing on hot soup to cool it down, exchanging energy
, conduction - answeris the process by which energy is transmitted through collisions
between neighboring molecules
ex) fiberglass insulation, frying pan heated up by a stove
radiation - answeremission or transmission of energy in the form of waves through
space or through material medium
wet bulb globe temperature - answerused to estimate the effect of temperature,
humidity, wind speed (wind chill), and visible and infrared radiation (usually sunlight) on
humans; determine appropriate exposure levels to high temperature
WBGT - answer.7Tw+.2Tg+.1Td
Tw - answerNatural wet-bulb temperature (combined with dry-bulb temperature
indicates humidity)
Tg - answerGlobe thermometer temperature (measured with a globe thermometer, also
known as a black globe thermometer)
Td - answerDry-bulb temperature (actual air temperature)
Hair hygrometer - answerInstrument used to measure relative humidity, based on the
fact that human hair stretches as humidity increases.
conduction - answerDirect contact
sensible cooling formula - answer
R value - answerresistance to heat transfer, the higher the R value, the lower the U
value
R20 - answertypical houses
R30 - answertypical attic
U value - answerU=1/R, if .3 value for Uthen 3 value for R
good R value - answer.3
What is the R value for U? - answer3
how do you avoid conduction - answerinsulation
overall heat transfer for a window - answer.3
