is high specific heat capacity?
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Specific heat is defined by the amount of heat needed to raise the temperature of 1 gram of a substance 1 degree Celsius (°C). Water has a high specific heat capacity which we'll refer to as simply "heat capacity", meaning it takes more energy to increase the temperature of water compared to other substances.
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Heating cord Higher power densities and temperatures, ranging from tapes with a maximum of 305° up to very-high-temperature tapes rated for up to 1400°F (760°C).
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Reliable thermodynamic properties of refrigerants such as pressure, temperature, specific volume, enthalpy and entropy, are required for refrigeration equipment selection and design.
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The heat capacity of a substance is the amount of heat required to raise the temperature of a defined amount of pure substances by one degree (Celsius or Kelvin). The calorie was defined so that the heat capacity of water was equal to one.
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The heat capacity and the specific heat are related by C=cm or c=C/m. The mass m, specific heat c, change in temperature ΔT, and heat added (or subtracted) Q are related by the equation: Q=mcΔT. Values of specific heat are dependent on the properties and phase of a given substance.
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Physical properties can be extensive or intensive. ... Intensive properties, in contrast, do not depend on the amount of the substance; they include color, melting point, boiling point, electrical conductivity, and physical state at a given temperature.
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['density – 7.13 g/cm³;', 'color – bluish-white;', 'melting point – 420 °C;', 'elasticity and malleability increase when heated to approximately 100 °C;', 'boiling point of 906 °C;', 'at temperatures above 200 °C, loses its elasticity and becomes a grey powder;', 'high heat capacity and heat conductivity;', 'good conductor.']
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c]low conductivity,hogh melting point. d]low resistivity,high melting point. e]high resistivity,high melting point. The heating element must have high-melting point so that it can withstand for high temperature and even a little raise in temperature will not damage the heating element of the heater.
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Amongst metals, lead has the highest specific gravity, that is, it has the highest density in comparison to water at any specific temperature. This is closely followed by the metal gold when it comes to the specific gravity.
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Thermal conductivity is the ability to transfer heat while the specific heat is the ability to hold a particular amount of heat. All conductors have relatively low specific heat capacity but for nonconductors have some high value for specific heat capacity.
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The specific heat capacity of ice is 2.108 kJ/kgK, or 2.108 J/gK. So to heat 100g of ice by 20.2K takes 2.108*100*20.2 J = 4,258.16 J. The specific heat of melting of ice is 334 J/g, so melting 100g of ice will take 33,400 J.
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Density is simply a ratio between the mass of a sample and it's volume. Specific Heat is a measure of how much thermal energy is required to raise the temperature one degree Celsius of one gram of the material. There is no correlation between the two quantities.
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The specific heat represents the amount of energy required to raise 1 kg of substance by 1oC (or 1 K), and can be thought of as the ability to absorb heat. The SI units of specific heats are J/kgK (kJ/kgoC). Water has a large specific heat of 4.19 kJ/kgoC compared to many other fluids and materials.
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How efficiently heat is transferred depends on the specific heat capacity of the material. The specific heat capacity c is the amount of energy it takes to raise the temperature of one kg of material by 1 degree Kelvin or Celsius. c = ΔQ/(mΔT).
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In GCV( Gross calorific Value) it is asumed that moisture & other elements present in coal(besides coal) can be used for generation of Heat and hence ' gross'. While in UHV( useful heat value) it is assumed that those elements cant produce heat and so are eleminated for the purpose of heat calculation.
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The specific heat capacity of a material is the energy required to raise one kilogram (kg) of the material by one degree Celsius (°C). The specific heat capacity of water is 4,200 joules per kilogram per degree Celsius (J/kg°C). This means that it takes 4,200 J to raise the temperature of 1 kg of water by 1°C.
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The most common heat sink materials are aluminium alloys. Aluminium alloy 1050 has one of the higher thermal conductivity values at 229 W/m•K but is mechanically soft. Aluminium alloys 6060 (low stress), 6061, and 6063 are commonly used, with thermal conductivity values of 166 and 201 W/m•K, respectively.