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heat capacity

The amount of heat energy that is required to to raise the average temperature of a mass, usually expressed in Joules per Kelvin (J K−1). See also British thermal unit, calorie, specific ...

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World Encyclopedia

Reference type:
Subject Reference
Current Version:
2004
Subject:
Encyclopedias
Length:
28 words

... capacity ( thermal capacity ) Ratio of the heat supplied to an object to the rise in its temperature. It is measured in joules/kelvin. See also specific heat ...

heat capacity

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A Dictionary of Mechanical Engineering (2 ed.)

Reference type:
Subject Reference
Current Version:
2019

...heat capacity ( C ) (Unit J/K) The energy required to raise the temperature of a body by 1K without change of phase . Heat capacity is an extensive thermodynamic property dependent on temperature and pressure. See also molar heat capacity ; specific heat...

heat capacity

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A Dictionary of Chemical Engineering

Reference type:
Subject Reference
Current Version:
2014

...heat capacity (Symbol C) The amount of heat Q transferred to a substance resulting in a change in temperature ΔT as C = Q / Δ T . The SI units are J K −1 . ...

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A Dictionary of Chemistry (8 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Science and technology, Chemistry
Length:
193 words

... capacity ( thermal capacity ) The ratio of the heat supplied to an object or specimen to its consequent rise in temperature. The specific heat capacity is the ratio of the heat supplied to unit mass of a substance to its consequent rise in temperature. The molar heat capacity is the ratio of the heat supplied to unit amount of a substance to its consequent rise in temperature. In practice, heat capacity ( C ) is measured in joules per kelvin, specific heat capacity ( c ) in J K −1 kg −1 , and molar heat capacity ( C m ) in J K −1 mol −1 . For a gas,...

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A Dictionary of Physics (8 ed.)

Reference type:
Subject Reference
Current Version:
2019
Subject:
Science and technology, Physics
Length:
193 words

...heat capacity ( thermal capacity ) The ratio of the heat supplied to an object or specimen to its consequent rise in temperature. The specific heat capacity is the ratio of the heat supplied to unit mass of a substance to its consequent rise in temperature. The molar heat capacity is the ratio of the heat supplied to unit amount of a substance to its consequent rise in temperature. In practice, heat capacity ( C ) is measured in joules per kelvin, specific heat capacity ( c ) in J K −1 kg −1 , and molar heat capacity ( C m ) in J K −1 mol −1 . For a...

heat capacity

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A Dictionary of Geology and Earth Sciences (5 ed.)

Reference type:
Subject Reference
Current Version:
2020

... capacity The energy required to raise the temperature of a given mass of material by one degree...

heat capacity

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Oxford Dictionary of Biochemistry and Molecular Biology (2 ed.)

Reference type:
Subject Reference
Current Version:
2008
Subject:
Science and technology, Life Sciences
Length:
75 words

... capacity symbol: C ; the amount of heat required to raise the temperature of a body or a system by 1 kelvin; it is usually measured in joules per kelvin. The heat capacity at constant pressure , C p , is given by: C p = ∂ H /∂ T ) p J K −1 and the heat capacity at constant volume , C v , is given by: C v = (∂ U /∂T) v J K −1 where H is the enthalpy, U the internal energy, and T the thermodynamic...

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A Dictionary of Energy Science

Reference type:
Subject Reference
Current Version:
2017

...heat capacity The amount of heat required to raise the temperature of a material or object by one degree; typical units are joules (or calories) per degree kelvin; 1 calorie ≈ 4.2...

heat capacity

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A Dictionary of Environment and Conservation (3 ed.)

Reference type:
Subject Reference
Current Version:
2017

... capacity ( thermal capacity ) The amount of heat energy that is required to raise the temperature of a substance, usually expressed in Joules per Kelvin (J K −1 ). It is measured in respect of a unit mass of the substance, when it is known as the specific heat capacity, or to a unit amount of the substance, when it is known as the molar heat capacity. See also British thermal unit ; calorie ; specific heat...

specific heat capacity

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The Oxford Dictionary of Sports Science & Medicine (3 ed.)

Reference type:
Subject Reference
Current Version:
2007

...heat capacity The quantity of heat required to raise the temperature of unit mass of substance by one degree. It is measured in joules per kilogram...

specific heat capacity

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World Encyclopedia

Reference type:
Subject Reference
Current Version:
2004
Subject:
Encyclopedias
Length:
28 words

...heat capacity Heat necessary to raise the temperature of one kilogram (1kg) of a substance by one kelvin (1°C). It is measured in J/kgK (J equals...

heat-capacity rate

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A Dictionary of Mechanical Engineering (2 ed.)

Reference type:
Subject Reference
Current Version:
2019

...heat-capacity rate ( c ) (Unit W/K) For fluid flow in a duct with mass flow rate ṁ , the product ṁC where C is the specific-heat capacity, at constant pressure ( C P ) in the case of a...

specific heat capacity

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A Dictionary of Construction, Surveying and Civil Engineering (2 ed.)

Reference type:
Subject Reference
Current Version:
2020

...heat capacity ( specific heat ) The amount of heat in joules that is required to raise the temperature of one kg of a material by one degree kelvin. Measured in...

specific heat capacity

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A Dictionary of Chemical Engineering

Reference type:
Subject Reference
Current Version:
2014

...specific heat capacity (Symbol c p , c v ) The amount of heat required to raise the temperature of one kilogram of a substance by a temperature of one degree K. The SI units are J kg −1 K −1 . The molar heat capacity is based on molar mass for which the SI units are J mol −1 K −1 . ...

heat-capacity ratio

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A Dictionary of Mechanical Engineering (2 ed.)

Reference type:
Subject Reference
Current Version:
2019

...heat-capacity ratio ( c* ) 1. A non-dimensional parameter that arises in the analysis of heat exchanger s, defined as the ratio c MIN /c MAX where c MIN is the heat-capacity rate c for the fluid with the smaller value of c and c MAX the value for the fluid with the larger value of c . Different flow rates and specific-heat values give rise to different values for c . 2. See specific heat...

molar heat capacity

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A Dictionary of Mechanical Engineering (2 ed.)

Reference type:
Subject Reference
Current Version:
2019

...molar heat capacity ( molecular heat capacity , C ̃ ‎ ) (Unit J/kmol.K or J/kmol.°C) The energy required to raise the temperature of one kmol of a substance by one degree kelvin without change of phase . For practical purposes, a liquid or a solid is generally regarded as having a single specific heat, whereas for a gas the energy required depends upon how the energy-transfer process is executed and two values are defined: the molar heat capacity at constant volume ( C ̃ ‎ V ) and the molar heat capacity at constant pressure ( C ̃ ‎ P ). The...

specific heat capacity

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Oxford Dictionary of Biochemistry and Molecular Biology (2 ed.)

Reference type:
Subject Reference
Current Version:
2008
Subject:
Science and technology, Life Sciences
Length:
39 words

...heat capacity symbol: c p (at constant pressure) or c v (at constant volume); the quantity of heat required to raise the temperature of unit mass of a substance by one degree. It is expressed (usually) in J K −1 kg −1...

molar heat capacity

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A Dictionary of Chemical Engineering

Reference type:
Subject Reference
Current Version:
2014

...molar heat capacity (Symbol c m ) The amount of heat required to raise the temperature of one mole of a substance through 1 K. The SI units are J mol −1 K −1 . ...

heat capacity

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The New Oxford Dictionary for Scientific Writers and Editors (2 ed.)

Reference type:
Subject Reference
Current Version:
2009

... capacity Symbol: C p (at constant pressure, ital. subscript) or C V (at constant volume, ital. subscript) A physical quantity, d Q /d T , where d T is the temperature increase resulting from the addition of a small quantity of heat d Q . The *SI unit is usually the joule per kelvin. The molar heat capacity , symbol C m , is heat capacity divided by *amount of substance . The SI unit is normally J/(mol K). The specific heat capacity , symbol c p , c V , or C sat (at saturation), is heat capacity divided by mass. The SI unit is normally...

heat capacity

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Oxford Dictionary of English (3 ed.)

Reference type:
English Dictionary
Current Version:
2015
Subject:
English Dictionaries and Thesauri
Length:
14 words

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