forms of heat transfer. conduction convection
DESCRIPTION
CONDUCTIONTRANSCRIPT
FORMSOF
HEATTRANSFER
CONDUCTION
CONVECTION
RADIATION
EVAPORATION
MEAN RADIANT TEMPERATURE
AIR TEMPERATURE AND MEAN RADIANT TEMPERATURE
AIR TEMPERATURE AND RELATIVE HUMIDITY
AIR MOTION
Relative Humidity: Relative humidity is a relationship between the amount of water vapor in a given mass of air in comparison to the maximum amount of moisture it could hold at that temperature.
Let’s look at an example:
If a liter of air contains 10 grams of water vapor and it could hold a maximum of 100 grams of water vapor at its present temperature, the relative humidity would be 10/100 time 100 or 10%.
As the temperature rises, the maximum amount of water vapor which can be held by a parcel of air will increase. Therefore if you were to raise the the temperature of this air, the relative humidity would drop.
PSYCHOMETRIC CHART
COOLING THE BODY
ADIABATIC HEATING / EVAPORATIVE COOLING
Dewpoint
If the air is gradually cooled while maintaining the moisture content constant, the
relative humidity will rise until it reaches 100%. This temperature, at which the
moisture content in the air will saturate the air, is called the dew point . If the air is cooled further, some of the moisture will condense.
COMPRESSIVE REFRIGERATION
COOLING PROCESS
COMPRESSOR -CONDENSER - EVAPORATOR
COOLING CYCLE
COMPRESSIVE REFRIGERATION SCHEMATIC
HEAT PUMP
BUILDINGSYSTEM
FORCED AIR SYSTEM
FORCED AIR HEATING
FORCED AIR DISTRIBUTION
DISTRIBUTION PATTERNS
RADIAL AND PERIMETER DISTRIBUTION SYSTEMS
RADIALPERIMETER
FURNACE LOCATIONS
HYDRONIC HEATING
RADIATORS
HOT WATER – ONE PIPE SYSTEM
HOT WATER – TWO PIPE SYSTEM
ELECTRIC HEATING
RADIANT HEATING
