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Why can regenerative bricks absorb more heat?

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Why can regenerative bricks absorb more heat?

Date of release:2019-03-13 Author: Click:

What is the specific heat capacity of regenerative brick?


What is the specific heat capacity of regenerative brick? Specific heat capacity is the heat absorbed or released by a unit mass object when it changes the unit temperature.


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This is Baidu Encyclopedia's explanation, but how to popularize it, for example, you increase the calorie once, and an egg is another calorie. Specific heat capacity is used to specify these. Specific heat capacity is abbreviated as specific heat, expressed in C, Q as heat and specific heat, which can be simply understood as "comparative heat".


Completely speaking, the specific heat of different substances with the same mass and the same temperature will be greater if they absorb more heat, 4200 chars will be absorbed when the temperature of 1 kilogram of water rises by 1 degree Celsius, 390 chars will be absorbed when the temperature of 1 kilogram of copper rises by 1 degree Celsius. Obviously, the specific heat of water is larger than that of copper. Conversely, we can compare which substance emits more heat when it is exothermic.






What is the specific heat capacity of regenerative brick?






Characteristics of magnesia-chrome bricks






Specific heat, like density, hardness and color, is a characteristic or attribute of matter and is inherent in matter.






Although formula C = Q/m t can be used to calculate the specific heat of substances, it can not be considered that the specific heat of substances is proportional to Q and inversely proportional to m and t. Because specific heat is a property of substances, it does not change with the change of external conditions. It is only related to the type of substances and the state of substances. It can be used to identify substances. The specific heat capacity of most substances is different, except for a few, such as kerosene. The specific heat capacity is the same as that of ice. The specific heat of the same substance is the same in the same state. Specific heat has nothing to do with the mass of the object, the change of temperature and the amount of heat absorbed (or released), but the specific heat of the material will change with the change of state.




When an object with a mass of M absorbs (or emits) heat Q in a certain process and the temperature rises (or decreases) T, then Q/T is called the heat capacity of the object in this process (referred to as heat capacity for short), which is expressed in C, i.e. C=Q/T. The specific heat capacity C = C/m = Q/m T is obtained by dividing heat capacity by mass. For the heat capacity and specific heat capacity of small processes, there are C=dQ/dT and c=1/m*dQ/dT, respectively. Therefore, in the finite process from T1 to T2, the heat Q=(T2, T1) CdT = m(T2, T1) CdT is absorbed (or released).


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