therm (EC)
type: Concept
definition: Unit of heat energy in commercial use, within the EU defined: 1 thm (EC) = 100 000 BtuIT.
in scheme: unit-of-measure
notation: N71
dimension vector: L2 M1 T-2
rec20 quantity: heat, quantity of heat, energy, thermodynamic energy, enthalpy, Helmholtz function, Helmholtz free energy
rec20 sector: Heat
unit symbol: thm (EC)

British thermal unit (international table) per second foot degree Rankine
type: Concept
in scheme: unit-of-measure
notation: A22
conversion multiplier: 6230.644798937007
dimension vector: L1 M1 Θ-1 T-3
rec20 quantity: thermal conductivity
rec20 sector: Heat
ucum code: [Btu_IT].s-1.[ft_i]-1.[degR]-1
unit symbol: BtuIT/(s·ft·°R)

British thermal unit (international table) per degree Fahrenheit
type: Concept
definition: Unit of the heat capacity according to the Imperial system of units.
in scheme: unit-of-measure
notation: N60
conversion multiplier: 1899.100535
dimension vector: L2 M1 Θ-1 T-2
rec20 quantity: heat capacity, entropy
rec20 sector: Heat
ucum code: [Btu_IT].[degF]-1
unit symbol: BtuIT/ºF

joule
type: Concept
in scheme: unit-of-measure
notation: JOU
conversion multiplier: 1.0
dimension vector: L2 M1 T-2
rec20 quantity: active energy
rec20 quantity: reaction energy
rec20 quantity: energy imparted, mean energy imparted
rec20 quantity: work function
rec20 quantity: radiant energy
rec20 quantity: Hartree energy
rec20 quantity: work, energy, potential energy, kinetic energy
rec20 quantity: level width, alpha disintegration energy
rec20 quantity: heat, quantity of heat, energy, thermodynamic energy, enthalpy, Helmholtz function, Helmholtz free energy
rec20 sector: Solid State Physics
rec20 sector: Nuclear Reactions and Ionizing Radiations
rec20 sector: Mechanics
rec20 sector: Light and Related Electromagnetic Radiations
rec20 sector: Heat
rec20 sector: Electricity and Magnetism
rec20 sector: Atomic and Nuclear Physics
ucum code: J
unit symbol: J

calorie (international table) per second centimetre kelvin
type: Concept
deprecated: true
in scheme: unit-of-measure
notation: D71
conversion multiplier: 418.68
dimension vector: L1 M1 Θ-1 T-3
rec20 quantity: thermal conductivity
rec20 sector: Heat
ucum code: cal_IT.s-1.cm-1.K-1
unit symbol: calIT/(s·cm·K)

British thermal unit (thermochemical) foot per hour square foot degree Fahrenheit
type: Concept
in scheme: unit-of-measure
notation: J46
conversion multiplier: 1.73
dimension vector: L1 M1 Θ-1 T-3
rec20 quantity: thermal conductivity
rec20 sector: Heat
ucum code: [Btu_th].[ft_i].h-1.[ft_i]-2.[degF]-1
unit symbol: Btuth·ft/(h·ft²·°F)

calorie (international table) per gram kelvin
type: Concept
deprecated: true
in scheme: unit-of-measure
notation: D76
conversion multiplier: 4186.8
dimension vector: L2 Θ-1 T-2
rec20 quantity: specific heat capacity at: - constant pressure, -constant volume,- saturation
rec20 sector: Heat
ucum code: cal_IT.g-1.K-1
unit symbol: calIT/(g·K)

calorie (thermochemical) per second centimetre kelvin
type: Concept
deprecated: true
in scheme: unit-of-measure
notation: D38
conversion multiplier: 418.4
dimension vector: L1 M1 Θ-1 T-3
rec20 quantity: thermal conductivity
rec20 sector: Heat
ucum code: cal_th.s-1.cm-1.K-1
unit symbol: calth/(s·cm·K)

British thermal unit (thermochemical) inch per hour square foot degree Fahrenheit
type: Concept
in scheme: unit-of-measure
notation: J48
conversion multiplier: 0.144131434
dimension vector: L1 M1 Θ-1 T-3
rec20 quantity: thermal conductivity
rec20 sector: Heat
ucum code: [Btu_th].[in_i].[ft_i]-2.h-1.[degF]-1
unit symbol: Btuth·in/(h·ft²·°F)

British thermal unit (international table) foot per hour square foot degree Fahrenheit
type: Concept
in scheme: unit-of-measure
notation: J40
conversion multiplier: 1.730734666
dimension vector: L1 M1 Θ-1 T-3
rec20 quantity: thermal conductivity
rec20 sector: Heat
ucum code: [Btu_IT].[ft_i].[ft_i]-2.h-1.[degF]-1
unit symbol: BtuIT·ft/(h·ft²·°F)

calorie (thermochemical) per centimetre second degree Celsius
type: Concept
in scheme: unit-of-measure
notation: J78
conversion multiplier: 418.4
dimension vector: L1 M1 Θ-1 T-3
rec20 quantity: thermal conductivity
rec20 sector: Heat
ucum code: cal_th.cm-1.s-1.Cel-1
unit symbol: calth/(cm·s·°C)

15 °C calorie
type: Concept
deprecated: true
in scheme: unit-of-measure
notation: A1
conversion multiplier: 4.1855
dimension vector: L2 M1 T-2
rec20 quantity: heat, quantity of heat, energy, thermodynamic energy, enthalpy, Helmholtz function, Helmholtz free energy
rec20 sector: Heat
ucum code: cal_[15]
unit symbol: cal₁₅

square metre per second
type: Concept
definition: Synonym: metre squared per second (square metres/second US)
in scheme: unit-of-measure
notation: S4
conversion multiplier: 1.0
dimension vector: L2 T-1
rec20 quantity: thermal diffusivity
rec20 quantity: diffusion coefficient, diffusion coefficient for neutron number density
rec20 quantity: kinematic viscosity
rec20 quantity: diffusion coefficient
rec20 quantity: thermal diffusion coefficient
rec20 sector: Nuclear Reactions and Ionizing Radiations
rec20 sector: Heat
rec20 sector: Mechanics
rec20 sector: Physical Chemistry and Molecular Physics
ucum code: m2.s-1
unit symbol: m²/s

degree Fahrenheit hour square foot per British thermal unit (international table)
type: Concept
in scheme: unit-of-measure
notation: J22
conversion multiplier: 0.17611018368230585
dimension vector: M-1 Θ1 T3
rec20 quantity: thermal insulance, coefficient of thermal insulation
rec20 sector: Heat
ucum code: [degF].h-1.[ft_i]-2.[Btu_IT]-1
unit symbol: °F·h·ft²/BtuIT

calorie (thermochemical) per gram kelvin
type: Concept
deprecated: true
in scheme: unit-of-measure
notation: D37
conversion multiplier: 4184.0
dimension vector: L2 Θ-1 T-2
rec20 quantity: specific heat capacity at: - constant pressure, -constant volume,- saturation
rec20 sector: Heat
ucum code: cal_th.g-1.K-1
unit symbol: calth/(g·K)

degree Fahrenheit second per British thermal unit (international table)
type: Concept
definition: Non SI-conforming unit of the thermal resistance according to the Imperial system of units.
in scheme: unit-of-measure
notation: N86
conversion multiplier: 0.0005265650668407318
dimension vector: L-2 M-1 Θ1 T3
rec20 quantity: thermal resistance
rec20 sector: Heat
ucum code: [degF].s.[Btu_IT]-1
unit symbol: ºF/(BtuIT/s)

Thermal capacity & conductivity units
type: Collection
definition: Units of measure grouped by quantity kind: thermal capacity & conductivity.
member: kilojoule per kilogram kelvin
member: British thermal unit (international table) per degree Rankine
member: kelvin metre per watt
member: degree Fahrenheit hour square foot per British thermal unit (international table)
member: calorie (international table) per gram kelvin
member: therm (U.S.)
member: British thermal unit (mean)
member: British thermal unit (international table) per second foot degree Rankine
member: degree Fahrenheit second per British thermal unit (thermochemical)
member: kilocalorie (thermochemical)
member: square metre kelvin per watt
member: degree Fahrenheit hour square foot per British thermal unit (international table) inch
member: British thermal unit (59 ºF)
member: kilowatt per metre kelvin
member: square metre hour degree Celsius per kilocalorie (international table)
member: clo
member: kilowatt per metre degree Celsius
member: degree Fahrenheit hour per British thermal unit (international table)
member: British thermal unit (thermochemical) inch per second square foot degree Fahrenheit
member: metre per degree Celcius metre
member: British thermal unit (international table) per pound degree Fahrenheit
member: calorie (20 ºC)
member: joule
member: calorie (international table) per second centimetre kelvin
member: calorie (international table)
member: British thermal unit (international table) per pound degree Rankine
member: kelvin per watt
member: joule per kelvin
member: kilojoule per kelvin
member: 15 °C calorie
member: British thermal unit (thermochemical) per pound degree Fahrenheit
member: watt second
member: quad (1015 BtuIT)
member: British thermal unit (thermochemical) inch per hour square foot degree Fahrenheit
member: calorie (thermochemical) per second centimetre kelvin
member: watt per metre kelvin
member: kilocalorie (mean)
member: joule per kilogram kelvin
member: calorie (international table) per gram degree Celsius
member: degree Fahrenheit second per British thermal unit (international table)
member: square foot per second
member: British thermal unit (international table)
member: calorie (thermochemical) per centimetre second degree Celsius
member: degree Fahrenheit hour per British thermal unit (thermochemical)
member: calorie (mean)
member: watt per kelvin
member: British thermal unit (thermochemical) per degree Rankine
member: degree Fahrenheit hour square foot per British thermal unit (thermochemical) inch
member: kilocalorie (international table)
member: British thermal unit (thermochemical) per degree Fahrenheit
member: kilocalorie (international table) per gram kelvin
member: British thermal unit (thermochemical) foot per hour square foot degree Fahrenheit
member: calorie (thermochemical) per gram kelvin
member: one
member: British thermal unit (international table) foot per hour square foot degree Fahrenheit
member: calorie (thermochemical) per gram degree Celsius
member: millimetre per kelvin
member: British thermal unit (international table) inch per hour square foot degree Fahrenheit
member: degree Fahrenheit hour square foot per British thermal unit (thermochemical)
member: British thermal unit (thermochemical) per pound degree Rankine
member: millimetre per degree Celcius metre
member: kilocalorie (international table) per hour metre degree Celsius
member: watt per metre degree Celsius
member: therm (EC)
member: British thermal unit (39 ºF)
member: British thermal unit (international table) per degree Fahrenheit
member: British thermal unit (international table) inch per second square foot degree Fahrenheit
member: square metre per second
member: British thermal unit (60 ºF)
member: joule per mole kelvin

square metre hour degree Celsius per kilocalorie (international table)
type: Concept
in scheme: unit-of-measure
notation: L14
conversion multiplier: 0.859845
dimension vector: M-1 Θ1 T3
rec20 quantity: thermal insulance, coefficient of thermal insulation
rec20 sector: Heat
ucum code: m2.h.Cel/kcal_IT
unit symbol: m²·h·°C/kcal

British thermal unit (thermochemical) per degree Rankine
type: Concept
definition: Unit of the heat capacity according to the Imperial system of units.
in scheme: unit-of-measure
notation: N63
conversion multiplier: 1897.8304761
dimension vector: L2 M1 Θ-1 T-2
rec20 quantity: heat capacity, entropy
rec20 sector: Heat
ucum code: [Btu_th].[degR]-1
unit symbol: Btuth/ºR

British thermal unit (international table) inch per hour square foot degree Fahrenheit
type: Concept
in scheme: unit-of-measure
notation: J41
conversion multiplier: 0.144227889
dimension vector: L1 M1 Θ-1 T-3
rec20 quantity: thermal conductivity
rec20 sector: Heat
ucum code: [Btu_IT].[in_i].h-1.[ft_i]-2.[degF]-1
unit symbol: BtuIT·in/(h·ft²·°F)

watt per metre degree Celsius
type: Concept
definition: Derived SI unit watt divided by the product of the SI base unit metre and the unit for temperature degree Celsius.
in scheme: unit-of-measure
notation: N80
conversion multiplier: 1.0
dimension vector: L1 M1 Θ-1 T-3
rec20 quantity: thermal conductivity
rec20 sector: Heat
ucum code: W.m-1.Cel-1
unit symbol: W/(m·°C)

kelvin metre per watt
type: Concept
in scheme: unit-of-measure
notation: H35
conversion multiplier: 1.0
dimension vector: L-1 M-1 Θ1 T3
rec20 quantity: thermal resistance
rec20 sector: Heat
ucum code: m.K.W-1
unit symbol: K·m/W

therm (U.S.)
type: Concept
definition: Unit of heat energy in commercial use.
in scheme: unit-of-measure
notation: N72
conversion multiplier: 105480400.0
dimension vector: L2 M1 T-2
rec20 quantity: heat, quantity of heat, energy, thermodynamic energy, enthalpy, Helmholtz function, Helmholtz free energy
rec20 sector: Heat
ucum code: 100000.[Btu_59]
unit symbol: thm (US)

watt per kelvin
type: Concept
in scheme: unit-of-measure
notation: D52
conversion multiplier: 1.0
dimension vector: L2 M1 Θ-1 T-3
rec20 quantity: thermal conductance
rec20 sector: Heat
ucum code: W.K-1
unit symbol: W/K

joule per kilogram kelvin
type: Concept
in scheme: unit-of-measure
notation: B11
conversion multiplier: 1.0
dimension vector: L2 Θ-1 T-2
rec20 quantity: specific heat capacity at: - constant pressure, -constant volume,- saturation
rec20 sector: Heat
ucum code: J.kg-1.K-1
unit symbol: J/(kg·K)

kilojoule per kelvin
type: Concept
in scheme: unit-of-measure
notation: B41
conversion multiplier: 1000.0
dimension vector: L2 M1 Θ-1 T-2
rec20 quantity: heat capacity, entropy
rec20 sector: Heat
ucum code: kJ.K-1
unit symbol: kJ/K

British thermal unit (thermochemical) per pound degree Rankine
type: Concept
definition: Unit of the heat capacity (British thermal unit according to the international table according to the Rankine degree) according to the Imperial system of units divided by the unit avoirdupois pound according to the avoirdupois system of units.
in scheme: unit-of-measure
notation: N64
conversion multiplier: 4184.000000044092
dimension vector: L2 Θ-1 T-2
rec20 quantity: heat capacity, entropy
rec20 sector: Heat
ucum code: [Btu_th].[lb_av]-1.[degR]-1
unit symbol: (Btuth/°R)/lb

British thermal unit (international table) per pound degree Rankine
type: Concept
in scheme: unit-of-measure
notation: A21
conversion multiplier: 426.9
dimension vector: L1 Θ-1
rec20 quantity: specific heat capacity at: - constant pressure, -constant volume,- saturation
rec20 sector: Heat
ucum code: [Btu_IT].[lbf_av]-1.[degR]-1
unit symbol: Btu/IT(lb·°R)

square metre kelvin per watt
type: Concept
in scheme: unit-of-measure
notation: D19
conversion multiplier: 1.0
dimension vector: M-1 Θ1 T3
rec20 quantity: thermal insulance, coefficient of thermal insulation
rec20 sector: Heat
ucum code: m2.K.W-1
unit symbol: m²·K/W

square foot per second
type: Concept
definition: Synonym: foot squared per second
in scheme: unit-of-measure
notation: S3
conversion multiplier: 0.09290304
dimension vector: L2 T-1
rec20 quantity: kinematic viscosity
rec20 quantity: thermal diffusivity
rec20 sector: Mechanics
rec20 sector: Heat
ucum code: [sft_i].s-1
unit symbol: ft²/s

calorie (thermochemical) per gram degree Celsius
type: Concept
in scheme: unit-of-measure
notation: J79
conversion multiplier: 4184.0
dimension vector: L2 Θ-1 T-2
rec20 quantity: heat capacity, entropy
rec20 sector: Heat
ucum code: cal_th.g-1.Cel-1
unit symbol: calth/(g·°C)

British thermal unit (60 ºF)
type: Concept
definition: Unit of head energy according to the Imperial system of units at a reference temperature of 60 °F.
in scheme: unit-of-measure
notation: N68
dimension vector: L2 M1 T-2
rec20 quantity: heat, quantity of heat, energy, thermodynamic energy, enthalpy, Helmholtz function, Helmholtz free energy
rec20 sector: Heat
unit symbol: Btu (60 ºF)

joule per mole kelvin
type: Concept
in scheme: unit-of-measure
notation: B16
conversion multiplier: 1.0
dimension vector: N-1 L2 M1 Θ-1 T-2
rec20 quantity: molar heat capacity, molar entropy, molar gas constant
rec20 sector: Physical Chemistry and Molecular Physics
ucum code: J.mol-1.K-1
unit symbol: J/(mol·K)

millimetre per kelvin
type: Concept
in scheme: unit-of-measure
notation: F53
conversion multiplier: 0.001
dimension vector: L1 Θ-1
rec20 quantity: thermal diffusivity
rec20 sector: Heat
ucum code: mm.K-1
unit symbol: mm/K

clo
type: Concept
in scheme: unit-of-measure
notation: J83
conversion multiplier: 0.155
dimension vector: M-1 Θ1 T3
rec20 quantity: thermal insulance, coefficient of thermal insulation
rec20 sector: Heat
unit symbol: clo

British thermal unit (international table) per degree Rankine
type: Concept
definition: Unit of the heat capacity according to the Imperial system of units.
in scheme: unit-of-measure
notation: N62
conversion multiplier: 1899.100535
dimension vector: L2 M1 Θ-1 T-2
rec20 quantity: heat capacity, entropy
rec20 sector: Heat
ucum code: [Btu_IT].[degR]-1
unit symbol: BtuIT/ºR

British thermal unit (39 ºF)
type: Concept
definition: Unit of heat energy according to the Imperial system of units in a reference temperature of 39 °F.
in scheme: unit-of-measure
notation: N66
dimension vector: L2 M1 T-2
rec20 quantity: heat, quantity of heat, energy, thermodynamic energy, enthalpy, Helmholtz function, Helmholtz free energy
rec20 sector: Heat
unit symbol: Btu (39 ºF)

British thermal unit (mean)
type: Concept
in scheme: unit-of-measure
notation: J39
conversion multiplier: 1055.05585262
dimension vector: L2 M1 T-2
rec20 quantity: heat, quantity of heat, energy, thermodynamic energy, enthalpy, Helmholtz function, Helmholtz free energy
rec20 sector: Heat
ucum code: [Btu_m]
unit symbol: Btu

kilocalorie (international table) per hour metre degree Celsius
type: Concept
in scheme: unit-of-measure
notation: K52
conversion multiplier: 1.163
dimension vector: L1 M1 Θ-1 T-3
rec20 quantity: thermal conductivity
rec20 sector: Heat
ucum code: kcal_IT.h-1.m-1.Cel-1
unit symbol: kcal/(m·h·°C)

quad (1015 BtuIT)
type: Concept
definition: Unit of heat energy according to the imperial system of units.
in scheme: unit-of-measure
notation: N70
conversion multiplier: 1.055e+18
dimension vector: L2 M1 T-2
rec20 quantity: heat, quantity of heat, energy, thermodynamic energy, enthalpy, Helmholtz function, Helmholtz free energy
rec20 sector: Heat
unit symbol: quad

British thermal unit (59 ºF)
type: Concept
definition: Unit of heat energy according to the Imperial system of units in a reference temperature of 59 °F.
in scheme: unit-of-measure
notation: N67
dimension vector: L2 M1 T-2
rec20 quantity: heat, quantity of heat, energy, thermodynamic energy, enthalpy, Helmholtz function, Helmholtz free energy
rec20 sector: Heat
unit symbol: Btu (59 ºF)

British thermal unit (international table) inch per second square foot degree Fahrenheit
type: Concept
in scheme: unit-of-measure
notation: J42
conversion multiplier: 519.220399911
dimension vector: L1 M1 Θ-1 T-3
rec20 quantity: thermal conductivity
rec20 sector: Heat
ucum code: [Btu_IT].[in_i].s-1.[ft_i]-2.[degF]-1
unit symbol: BtuIT·in/(s·ft²·°F)

kilocalorie (international table)
type: Concept
in scheme: unit-of-measure
notation: E14
conversion multiplier: 4186.8
dimension vector: L2 M1 T-2
rec20 quantity: heat, quantity of heat, energy, thermodynamic energy, enthalpy, Helmholtz function, Helmholtz free energy
rec20 sector: Heat
ucum code: kcal_IT
unit symbol: kcalIT

watt second
type: Concept
in scheme: unit-of-measure
notation: J55
conversion multiplier: 1.0
dimension vector: L2 M1 T-2
rec20 quantity: heat, quantity of heat, energy, thermodynamic energy, enthalpy, Helmholtz function, Helmholtz free energy
rec20 sector: Heat
ucum code: W.s
unit symbol: W·s

one
type: Concept
definition: Synonym: unit
in scheme: unit-of-measure
notation: C62
conversion multiplier: 1.0
dimension vector: 1
rec20 quantity: proton number
rec20 quantity: relative permittivity
rec20 quantity: Schmidt number
rec20 quantity: refractive index
rec20 quantity: orbital angular momentum quantum number
rec20 quantity: charge number of ion
rec20 quantity: fine structure constant
rec20 quantity: mole fraction of B, mole ratio of solute B
rec20 quantity: absolute activity
rec20 quantity: Fourier number
rec20 quantity: Reynolds number
rec20 quantity: standard absolute activity of B (in a liquid or a solid mixture)
rec20 quantity: thermal diffusion ratio, thermal diffusion factor
rec20 quantity: emissivity, spectral emissivity, emissivity at a specified wavelength, directional spectral emissivity
rec20 quantity: hyperfine structure quantum number
rec20 quantity: order of reflexion
rec20 quantity: Fourier number for mass transfer
rec20 quantity: multiplication factor, infinite medium multiplication factor, effective multiplication factor
rec20 quantity: magnetic susceptibility
rec20 quantity: Cowling number
rec20 quantity: magnetic Reynolds number
rec20 quantity: Knudsen number
rec20 quantity: poisson ratio, poisson number
rec20 quantity: Stanton number
rec20 quantity: degree of dissociation
rec20 quantity: electric susceptibility
rec20 quantity: internal conversion factor
rec20 quantity: proton number, atomic number
rec20 quantity: standard equilibrium constant
rec20 quantity: spin angular momentum quantum number
rec20 quantity: neutron number
rec20 quantity: Prandtl number
rec20 quantity: neutron yield per fission, neutron yield per absorption
rec20 quantity: Weber number
rec20 quantity: Rayleigh number
rec20 quantity: Grüneisen parameter
rec20 quantity: spectral absorption factor, spectral absorptance, spectral reflectionfactor,spectral reflectance, spectral transmission factor, spectral transmittance, spectral radiance factor
rec20 quantity: coupling coefficient, leakage coefficient
rec20 quantity: g-factor of atom or electron, g-factor of nucleus
rec20 quantity: resonance escape probability
rec20 quantity: Grashof number
rec20 quantity: optical density
rec20 quantity: transport number of ion B, current fraction of ion B
rec20 quantity: Lewis number
rec20 quantity: short-range order parameter, long-range order parameter
rec20 quantity: friction factor, coefficient of friction
rec20 quantity: Strouhal number
rec20 quantity: Peclet number
rec20 quantity: packing fraction, binding fraction
rec20 quantity: relative mass excess, relative mass defect
rec20 quantity: nucleon number, mass number
rec20 quantity: activity of solvent A, relative activity of solvent A (especially in a dilute solution), osmotic coefficient of the solvent A (especially in a dilute solution), standard absolute activity of solvent A (especially in a dilute solution)
rec20 quantity: relative density, relative mass density
rec20 quantity: microcanonical partition function, canonical partition function, grand-canonical partition function, grand partition function, molecular partition function, partition function of a molecule
rec20 quantity: Alfven number
rec20 quantity: stoichiometric number of B
rec20 quantity: activity coefficient of solute B (especially in a dilute solution),standard absolute activity of solute B (especially in a dilute solution)
rec20 quantity: nuclear spin quantum number
rec20 quantity: standard absolute activity of B (in a gaseous mixture)
rec20 quantity: Nusselt number for mass transfer
rec20 quantity: Nusselt number
rec20 quantity: ratio of the specific heat capacities, ratio of the massic heat capacity, isentropic exponent
rec20 quantity: Hartmann number
rec20 quantity: reactivity
rec20 quantity: principle quantum number
rec20 quantity: magnetic quantum number
rec20 quantity: activity coefficient of B (in a liquid as a solid mixture)
rec20 quantity: Debye-Walle factor
rec20 quantity: number of turns in a winding, number of phases, number of pairs of poles
rec20 quantity: fast fission factor
rec20 quantity: non leakage probability
rec20 quantity: luminous efficiency, spectral luminous efficiency,luminous efficiency at a specified wavelength
rec20 quantity: Froude number

calorie (international table) per gram degree Celsius
type: Concept
in scheme: unit-of-measure
notation: J76
conversion multiplier: 4186.8
dimension vector: L2 Θ-1 T-2
rec20 quantity: heat capacity, entropy
rec20 sector: Heat
ucum code: cal_IT.g-1.Cel-1
unit symbol: calIT/(g·°C)

British thermal unit (thermochemical) inch per second square foot degree Fahrenheit
type: Concept
in scheme: unit-of-measure
notation: J49
rec20 quantity: thermal conductivity
rec20 sector: Heat
unit symbol: Btuth·in/(s·ft²·°F)

degree Fahrenheit hour per British thermal unit (international table)
type: Concept
definition: Non SI-conforming unit of the thermal resistance according to the Imperial system of units.
in scheme: unit-of-measure
notation: N84
conversion multiplier: 1.8956342406266347
dimension vector: L-2 M-1 Θ1 T3
rec20 quantity: thermal resistance
rec20 sector: Heat
ucum code: [degF].h.[Btu_IT]-1
unit symbol: ºF/(BtuIT/h)

British thermal unit (international table) per pound degree Fahrenheit
type: Concept
in scheme: unit-of-measure
notation: J43
conversion multiplier: 426.93476489409767
dimension vector: L1 Θ-1
rec20 quantity: heat capacity, entropy
rec20 sector: Heat
ucum code: [Btu_IT].[lbf_av]-1.[degF]-1
unit symbol: BtuIT/(lb·°F)

degree Fahrenheit hour square foot per British thermal unit (international table) inch
type: Concept
definition: Unit of specific thermal resistance according to the Imperial system of units.
in scheme: unit-of-measure
notation: N88
conversion multiplier: 6.933471798515979
dimension vector: L-1 M-1 Θ1 T3
rec20 quantity: thermal resistance
rec20 sector: Heat
ucum code: [degF].h.[ft_i]2.[Btu_IT]-1.[in_i]-1
unit symbol: ºF·h·ft²/(BtuIT·in)

degree Fahrenheit second per British thermal unit (thermochemical)
type: Concept
definition: Non SI-conforming unit of the thermal resistance according to the Imperial system of units.
in scheme: unit-of-measure
notation: N87
conversion multiplier: 0.000526917452635168
dimension vector: L-2 M-1 Θ1 T3
rec20 quantity: thermal resistance
rec20 sector: Heat
ucum code: [degF].s.[Btu_th]-1
unit symbol: ºF/(Btuth/s)

British thermal unit (thermochemical) per pound degree Fahrenheit
type: Concept
in scheme: unit-of-measure
notation: J50
conversion multiplier: 4184.000000044092
dimension vector: L2 Θ-1 T-2
rec20 quantity: heat capacity, entropy
rec20 sector: Heat
ucum code: [Btu_th].[lb_av]-1.[degF]-1
unit symbol: Btuth/(lb·°F)

calorie (mean)
type: Concept
in scheme: unit-of-measure
notation: J75
conversion multiplier: 4.19
dimension vector: L2 M1 T-2
rec20 quantity: heat, quantity of heat, energy, thermodynamic energy, enthalpy, Helmholtz function, Helmholtz free energy
rec20 sector: Heat
ucum code: cal_m
unit symbol: cal

degree Fahrenheit hour square foot per British thermal unit (thermochemical) inch
type: Concept
definition: Unit of specific thermal resistance according to the Imperial system of units.
in scheme: unit-of-measure
notation: N89
conversion multiplier: 6.938111789130206
dimension vector: L-1 M-1 Θ1 T3
rec20 quantity: thermal resistance
rec20 sector: Heat
ucum code: [degF].h.[ft_i]2.[Btu_th]-1.[in_i]-1
unit symbol: ºF·h·ft²/(Btuth·in)

degree Fahrenheit hour square foot per British thermal unit (thermochemical)
type: Concept
in scheme: unit-of-measure
notation: J19
conversion multiplier: 0.17622803944390722
dimension vector: M-1 Θ1 T3
rec20 quantity: thermal insulance, coefficient of thermal insulation
rec20 sector: Heat
ucum code: [degF].h-1.[ft_i]-2.[Btu_th]-1
unit symbol: °F·h·ft²/Btuth

kilojoule per kilogram kelvin
type: Concept
in scheme: unit-of-measure
notation: B43
conversion multiplier: 1000.0
dimension vector: L2 Θ-1 T-2
rec20 quantity: specific heat capacity at: - constant pressure, -constant volume,- saturation
rec20 sector: Heat
ucum code: kJ.(kg.K)-1
unit symbol: kJ/(kg·K)

kilocalorie (international table) per gram kelvin
type: Concept
definition: Unit of the mass-related heat capacity as quotient 1000-fold of the calorie (international table) divided by the product of the 0,001-fold of the SI base units kilogram and kelvin.
in scheme: unit-of-measure
notation: N65
conversion multiplier: 4186800.0
dimension vector: L2 Θ-1 T-2
rec20 quantity: heat capacity, entropy
rec20 sector: Heat
ucum code: kcal_IT.g-1.K-1
unit symbol: (kcalIT/K)/g

British thermal unit (thermochemical) per degree Fahrenheit
type: Concept
definition: Unit of the heat capacity according to the Imperial system of units.
in scheme: unit-of-measure
notation: N61
conversion multiplier: 1897.8304761
dimension vector: L2 M1 Θ-1 T-2
rec20 quantity: heat capacity, entropy
rec20 sector: Heat
ucum code: [Btu_th].[degF]-1
unit symbol: Btuth/ºF

degree Fahrenheit hour per British thermal unit (thermochemical)
type: Concept
definition: Non SI-conforming unit of the thermal resistance according to the Imperial system of units.
in scheme: unit-of-measure
notation: N85
conversion multiplier: 1.8969028294866048
dimension vector: L-2 M-1 Θ1 T3
rec20 quantity: thermal resistance
rec20 sector: Heat
ucum code: [degF].h.[Btu_th]-1
unit symbol: ºF/(Btuth/h)

watt per metre kelvin
type: Concept
in scheme: unit-of-measure
notation: D53
conversion multiplier: 1.0
dimension vector: L1 M1 Θ-1 T-3
rec20 quantity: thermal conductivity
rec20 sector: Heat
ucum code: W.m-1.K-1
unit symbol: W/(m·K)

British thermal unit (international table)
type: Concept
in scheme: unit-of-measure
notation: BTU
conversion multiplier: 1055.05585262
dimension vector: L2 M1 T-2
rec20 quantity: heat, quantity of heat, energy, thermodynamic energy, enthalpy, Helmholtz function, Helmholtz free energy
rec20 sector: Heat
ucum code: [Btu_IT]
unit symbol: BtuIT

kilocalorie (thermochemical)
type: Concept
in scheme: unit-of-measure
notation: K53
conversion multiplier: 4184.0
dimension vector: L2 M1 T-2
rec20 quantity: heat, quantity of heat, energy, thermodynamic energy, enthalpy, Helmholtz function, Helmholtz free energy
rec20 sector: Heat
ucum code: kcal
unit symbol: kcalth

joule per kelvin
type: Concept
in scheme: unit-of-measure
notation: JE
conversion multiplier: 1.0
dimension vector: L2 M1 Θ-1 T-2
rec20 quantity: heat capacity, entropy
rec20 quantity: massieu function, planck function
rec20 quantity: Boltzmann constant
rec20 sector: Physical Chemistry and Molecular Physics
rec20 sector: Heat
ucum code: J.K-1
unit symbol: J/K

kilocalorie (mean)
type: Concept
in scheme: unit-of-measure
notation: K51
conversion multiplier: 4190.0
dimension vector: L2 M1 T-2
rec20 quantity: heat, quantity of heat, energy, thermodynamic energy, enthalpy, Helmholtz function, Helmholtz free energy
rec20 sector: Heat
ucum code: kcal_m
unit symbol: kcal

kelvin per watt
type: Concept
in scheme: unit-of-measure
notation: B21
conversion multiplier: 1.0
dimension vector: L-2 M-1 Θ1 T3
rec20 quantity: thermal resistance
rec20 sector: Heat
ucum code: K.W-1
unit symbol: K/W

millimetre per degree Celcius metre
type: Concept
in scheme: unit-of-measure
notation: E97
conversion multiplier: 0.001
dimension vector: Θ-1
rec20 quantity: thermal diffusivity
rec20 sector: Heat
ucum code: mm.Cel-1.m-1
unit symbol: mm/(°C·m)

kilowatt per metre degree Celsius
type: Concept
definition: 1000-fold of the derived SI unit watt divided by the product of the SI base unit metre and the unit for temperature degree Celsius.
in scheme: unit-of-measure
notation: N82
conversion multiplier: 1000.0
dimension vector: L1 M1 Θ-1 T-3
rec20 quantity: thermal conductivity
rec20 sector: Heat
ucum code: kW.m-1.Cel-1
unit symbol: kW/(m·°C)

calorie (international table)
type: Concept
deprecated: true
in scheme: unit-of-measure
notation: D70
conversion multiplier: 4.1868
dimension vector: L2 M1 T-2
rec20 quantity: heat, quantity of heat, energy, thermodynamic energy, enthalpy, Helmholtz function, Helmholtz free energy
rec20 sector: Heat
ucum code: cal_IT
unit symbol: calIT

metre per degree Celcius metre
type: Concept
definition: SI base unit metre divided by the product of the unit degree Celsius and the SI base unit metre.
in scheme: unit-of-measure
notation: N83
conversion multiplier: 1.0
dimension vector: Θ-1
rec20 quantity: thermal diffusivity
rec20 sector: Heat
ucum code: m.Cel-1.m-1
unit symbol: m/(°C·m)

calorie (20 ºC)
type: Concept
definition: Unit for quantity of heat, which is to be required for 1 g air free water at a constant pressure from 101,325 kPa, to warm up the pressure of standard atmosphere at sea level, from 19,5 °C on 20,5 °C.
in scheme: unit-of-measure
notation: N69
dimension vector: L2 M1 T-2
rec20 quantity: heat, quantity of heat, energy, thermodynamic energy, enthalpy, Helmholtz function, Helmholtz free energy
rec20 sector: Heat
unit symbol: cal₂₀

kilowatt per metre kelvin
type: Concept
definition: 1000-fold of the derived SI unit watt divided by the product of the SI base unit metre and the SI base unit kelvin.
in scheme: unit-of-measure
notation: N81
conversion multiplier: 1000.0
dimension vector: L1 M1 Θ-1 T-3
rec20 quantity: thermal conductivity
rec20 sector: Heat
ucum code: kW.m-1.K-1
unit symbol: kW/(m·K)