Definitions
Hydronic Heating - a system of heating via the forced circulation of liquids or vapors through a set of pipes
Radiant Heat - heating a space by means of radiation from heat transfer fluid piped through pipes.
Radiator - anything that radiates , low mass heating, high mass heating, base board fins, air over heating coils, etc.
High Mass Heat Transfer - transfer of heat via the forced circulation of liquids through pipes through a high mass radiator, typically concrete.
Low Mass Heat Transfer - transfer of heat via the forced circulation of liquids through pipes through a low mass radiator, typically wood.
Btu or British thermal unit - the required energy needed to heat one pound of water (.12 US gallon) one degree Fahrenheit.
Open Boiler - a open to the atmosphere non pressurized boiler for hydronic heating systems
Outdoor Hot Water Furnace - typically an Open Boiler or Atmospheric Boiler used for hydronic heating systems
Atmospheric Boiler - an Open Boiler or Outdoor Hot Water Furnace
On Demand Boiler - a low volume boiler which heats the heat transfer fluid as it passes through the boiler
Closed Boiler System - A closed to the atmosphere pressurized boiler for hydronic or steam heating.
DHWT - Domestic Hot Water Tank
Side Arm Heat Exchanger - a heat exchanger which is mounted to the side of a conventional DHWT with the heat transfer fluid isolated from the the domestic water by the heat exchanger.
Plate To Plate Heat Exchanger - a heat exchanger which fluid pass through from two sources each fluid isolated from the other by heat exchanger plates
Pex Pipe - cross-linked polyethylene pipe
PEX-Al-PEX - is the acronym for PEX-Aluminum-PEX, which refers to the alternating layers of cross-linked polyethylene and aluminum used in the manufacturing process of the pipe.
Poly B Pipe - older grey non cross linked polyethylene pipe which is no longer manufactured as it has a life expectancy off only less then 100 years and as short as 20 years if used with heat transfer fluid that hotter then 120 degrees Fahrenheit
Ethylene Glycol - toxic heat transfer fluid
Propylene Glycol - non toxic heat transfer fluid
LP - Abbreviation for Liquid Propane
NG - Abbreviation for Natural Gas
Mcf - Thousand cubic Feet
ccf - Hundred cubic Feet
kW - kilowatt (1000 Watts) = 3413 Btu
kWh - kilowatt hour
Hydronic Heating - a system of heating via the forced circulation of liquids or vapors through a set of pipes
Radiant Heat - heating a space by means of radiation from heat transfer fluid piped through pipes.
Radiator - anything that radiates , low mass heating, high mass heating, base board fins, air over heating coils, etc.
High Mass Heat Transfer - transfer of heat via the forced circulation of liquids through pipes through a high mass radiator, typically concrete.
Low Mass Heat Transfer - transfer of heat via the forced circulation of liquids through pipes through a low mass radiator, typically wood.
Btu or British thermal unit - the required energy needed to heat one pound of water (.12 US gallon) one degree Fahrenheit.
Open Boiler - a open to the atmosphere non pressurized boiler for hydronic heating systems
Outdoor Hot Water Furnace - typically an Open Boiler or Atmospheric Boiler used for hydronic heating systems
Atmospheric Boiler - an Open Boiler or Outdoor Hot Water Furnace
On Demand Boiler - a low volume boiler which heats the heat transfer fluid as it passes through the boiler
Closed Boiler System - A closed to the atmosphere pressurized boiler for hydronic or steam heating.
DHWT - Domestic Hot Water Tank
Side Arm Heat Exchanger - a heat exchanger which is mounted to the side of a conventional DHWT with the heat transfer fluid isolated from the the domestic water by the heat exchanger.
Plate To Plate Heat Exchanger - a heat exchanger which fluid pass through from two sources each fluid isolated from the other by heat exchanger plates
Pex Pipe - cross-linked polyethylene pipe
PEX-Al-PEX - is the acronym for PEX-Aluminum-PEX, which refers to the alternating layers of cross-linked polyethylene and aluminum used in the manufacturing process of the pipe.
Poly B Pipe - older grey non cross linked polyethylene pipe which is no longer manufactured as it has a life expectancy off only less then 100 years and as short as 20 years if used with heat transfer fluid that hotter then 120 degrees Fahrenheit
Ethylene Glycol - toxic heat transfer fluid
Propylene Glycol - non toxic heat transfer fluid
LP - Abbreviation for Liquid Propane
NG - Abbreviation for Natural Gas
Mcf - Thousand cubic Feet
ccf - Hundred cubic Feet
kW - kilowatt (1000 Watts) = 3413 Btu
kWh - kilowatt hour
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Last modified: 10/19/24