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Bell Gossett
Technical Help
Dictionary of Terms
8200 N. Austin Ave
Morton Grove
IL 60053
USA
Tel 847 966-3700
Fax 847 966-9052
Dictionary of Terms
Select Term
Absolute Humidity
Absolute Pressure
Absolute Temperature
Absolute Zero
Accumulator Tank
Air
Air Change
Air Cleaner
Air Conditioning
Air Infiltration
Air Separation
Air Valve
Approval Agencies
Atmospheric Pressure
Backflow Preventer
Blow Down Valve
Boiler Controls
Boiler Crown
Boiler Feed Pump
Boiler Feed Unit
Boiler Heating Surface
Boiler Horse Power
Boiler Thermal Shock
Boiler-header Drip Connection
British Thermal Unit (BTU)
BSPT
Bucket Trap (Inverted)
Bucket Trap (Open)
Built-Ins
Calorie (Large)
Calorie (Small)
Cavitation
Centigrade
Central Fan System
Check Valve
Chimney Effect
Coefficient of Heat Transmission (Over-all)-U-
Column Radiator
Comfort Air Conditioning
Comfort Line
Comfort Zone (Average)
Compression Tank
Concealed Radiator
Condensate
Condensate Pump
Condensate Return (unit)
Condensate Return Rate
Condensation
Conductance (Thermal)-C-
Conduction (Thermal)
Conductivity (Thermal)-k-
Conductor (Thermal)
Convection
Convector
Convertor
Cooling Leg
Counter-Flow System
Degree-Day
Dew-Point Temperature
Diaphragm Tank
Differential Pressure
Direct Radiator
Direct-lndirect Heating Unit
Direct-return System (hot water)
Domestic Hot Water
Down-Feed One-Pipe Riser (Steam)
Down-feed Steam System
Down-feed Supply Riser
Drip Connection
Dry Fire
Dry Return (Steam)
Dry Saturated Steam
Dry-Bulb Temperature
EDR
Equalizer
Equivalent Direct Radiation (E.D.R.)
Extended Heating Surface
Extended Surface Heating Unit
Fahrenheit
Fan Convector
Fire Tube Boiler
Flash Steam
Float and Thermostatic Trap
Float Switch
Float Trap
Flo-Control Valves
Foaming
Force
Freeze Up
Furnace
Gate Valve
Gauge Glass
Gauge Pressure
Hartford Loop
Head
Head Pressure
Heat
Heat of the Liquid
Heat Pump
Heat Transmission, Coefficient
Heat Unit
Heat, Latent
Heat, Sensible
Heating Medium
Heating Surface
Heating Unit
Horsepower
Hot Water Boiler
Hot Water Heaters
Hot Water Heating System
Humidistat
Humidity
Hydronic System
Indirect Water Heater
Induced Vacuum
Insulation (Thermal)
Latent Heat of Evaporation
Latent Heat of Fusion
Loop Riser
Low Pressure Steam
Low Water Condition in Boilers
Low Water Cutoff
Main Vent Valve
Make-Up Water
Manual Reset
Maximum Differential (MD)
Mechanical Equivalent of Heat
Mechanical Return System
Mil-lnch
Minimum Safe Water Level
Modulating Loads
Monoflo Tees
Net Positive Suction Head (NPSH)
Net Water Expansion Factors Table
No Pressure Return
NPSHR and NPSHA
NPT
One-Pipe Supply Riser (Steam)
One-Pipe System (Hot Water)
One-Pipe System (Steam)
Open Vent
Overfiring
Overhead System
Panel Heating
Panel Radiator
Parallel-Flow System
Pilot Valve
Pitch of Mains
Pressure
Pressure Drop
Pressure Powered Pump
Pressure Reducing Valve
Primary-secondary Pumping
Prime Surface
Priming
Radiant Heating
Radiation
Radiator
Recessed Radiator
Recirculation
Reducing Valve
Re-Evaporation
Refrigeration, Ton of
Relative Humidity
Return Mains
Reverse-Return System (Hot Water)
Safety Factor
Sensible Heat
Skimming
Sparge Tube
Specific Gravity
Specific Heat
Split System
Square Foot of Heating Surface
Static Discharge Head
Static Head
Static Pressure
Static Suction Head
Static Suction Lift
Steam
Steam Boiler
Steam Heating System
Steam Pop Safety Valve (Relief Valve)
Steam Trap
Storage Capacity
Strainer
Superheated Steam
Supply Main
Supply Riser
Supply Valve
Tank Regulator
Temperature Regulator
Thermodisc Trap
Thermostat
Thermostatic Steam Traps
Ton of Refrigeration
Total Heat
Total Pressure
Trap
Tube Bundle
Two-Pipe System (Steam or Water)
Two-pipe Vacuum System
Type of Liquid
Unit Heater
Unit Pressure
Up-feed Steam System
Up-feed Supply Riser
Vacuum Heating System (Steam)
Vacuum Pump Equalizer
Vacuum System
Vapor
Vapor Heating System (Steam)
Vapor Pressure
Velocity Pressure
Vent Valve (Steam)
Vent Valve (Water)
Ventilation
Warm Air Heating System
Water Expansion
Water Hammer
Water horsepower (WHP)
Water Tube Boilers
Wet Bulb Temperature
Wet Return (Steam)
Wet Saturated Steam
Zoning
to get definition.
Radiant Heating
A heating system in which the heating is by radiation only. Sometimes used in a Panel Heating System.