9.6.- 传播热量

热力学定律处理的是能量传递和热与功之间的相互作用,但只是在平衡系统中。因此,它们可以让我们确定初始和最终状态,但对预测和量化中间过程没有用。传热提供了确定这些过程的方法。

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传热方式有三种。

  • 传导:在固体介质中发生的温度梯度的作用,使热量从温度较高的区域向温度较低的区域传递。单位时间内传导的热量与温度梯度乘以面积 A 成正比。
  • 对流:当流体与固体表面接触时,流体的颗粒与固体之间发生交换。有两个对流过程。
  • 自由对流:驱动力来自于流体颗粒间的密度差。与固体接触的颗粒改变了温度和密度,从而引起向上流动。
  • 强制对流:驱动力来自外部,使流体在表面移动。
  • 辐射:在没有介质的情况下,由于构成这些表面的原子或分子的电子构型发生变化,在不同温度下的两个表面之间通过辐射进行净热传递。辐射放出的热量由 Stefan-Boltzmann 定律给出。

阻止热量的传递是不可能的,但可以作用于传递的速度。研究传热的重要意义在于确定材料或配置,根据一定的参数优化热交换速率。

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相关资料

传播热量 设备

Showing 1-30 of 46 item(s)
COMPUTER CONTROLLED HEAT TRANSFER SERIES - TSTCC
  • TSTCC
Available
9.6.- 传播热量

TSTCC

热传递研究系列,由计算机(PC)控制

The Computer Controlled Heat Transfer Series, "TSTCC," has been designed by EDIBON to study and compare different types of heat transfer on a small scale. It allows a wide range of heat transfer demonstrations and study the factors affecting and...
LINEAR HEAT CONDUCTION MODULE FOR TSTCC - TXC/CL
Available
9.6.- 传播热量

TXC/CL

线性热传导设备(用于TSTCC)

配件 TSTCC
TXC/CL. Linear Heat Conduction Unit for TSTCC: study of the principles of linear heat conduction and to allow the measurement of the conductivity of different solid conductors and insulators.Bench-top unit to study the principles of linear heat...
RADIAL HEAT CONDUCTION MODULE FOR TSTCC - TXC/CR
Available
9.6.- 传播热量

TXC/CR

径向热传导设备(用于TSTCC)

配件 TSTCC
TXC/CR. Radial Heat Conduction Unit for TSTCC: study of the principles of radial heat conduction and to allow the measurement of conductivity on a solid brass disc.Bench-top unit to study the principles of radial heat conduction, and to allow the...
RADIATION HEAT TRANSFER MODULE FOR TSTCC - TXC/RC
Available
9.6.- 传播热量

TXC/RC

辐射传热设备(用于TSTCC)

配件 TSTCC
TXC/RC. Radiation Heat Transfer Unit for TSTCC: study of the principles of heat transfer and exchange by radiation.Bench-top unit designed to demonstrate the laws of radiant heat transfer and radiant heat exchange.
EXTENDED SURFACE HEAT TRANSFER MODULE FOR TSTCC - TXC/SE
Available
9.6.- 传播热量

TXC/SE

扩展表面传热设备(用于TSTCC)

配件 TSTCC
TXC/SE. Extended Surface Heat Transfer Unit for TSTCC: study of temperature profiles and heat transfer characteristics on an extended surface. It studies the effects of adding fins to a body to extend its surface to achieve a change in the cooling...
UNSTEADY STATE HEAT TRANSFER MODULE FOR TSTCC - TXC/EI
Available
9.6.- 传播热量

TXC/EI

非稳态传热设备(用于TSTCC)

配件 TSTCC
TXC/EI. Unsteady State Heat Transfer Unit for TSTCC: study of heat transfer in the non-stationary state Study of transient conduction with convection.Bench-top unit designed to allow practices and exercises to be performed in unsteady state heat...
THERMAL CONDUCTIVITY OF LIQUID AND GAS MODULE FOR TSTCC - TXC/LG
Available
9.6.- 传播热量

TXC/LG

液体和气体热导率设备(用于TSTCC)

配件 TSTCC
TXC/LG. Thermal Conductivity of Liquids and Gases Unit for TSTCC: study of the thermal conductivity of any gas or liquid compatible with building materials.This unit has been designed to enable students to easily determine the thermal conductivity...
THREE AXES HEAT TRANSFER MODULE FOR TSTCC - TXC/TE
Available
9.6.- 传播热量

TXC/TE

三轴传热设备(用于TSTCC)

配件 TSTCC
TXC/TE. Three Axes Heat Transfer Unit for TSTCC: study of heat transfer by studying the direction in the three axes.Bench-top unit designed to carry out heat transfer experiments and exercises studying the direction in three axes.
CERAMIC HEAT TRANSFER MODULE FOR TSTCC - TXC/TC
Available
9.6.- 传播热量

TXC/TC

用于TSTCC的陶瓷传热设备

配件 TSTCC
TXC/TC. Ceramic Heat Transfer Unit for TSTCC: study of the heat transfer of different ceramic materials.Bench-top unit designed to study of the heat transfer of different ceramic materials.
INSULATING MATERIAL HEAT TRANSFER MODULE FOR TSTCC - TXC/TI
Available
9.6.- 传播热量

TXC/TI

用于TSTCC的绝缘材料传热设备

配件 TSTCC
TXC/TI. Insulating Material Heat Transfer Unit for TSTCC: study of the resistance to thermal conduction of different thermal insulation materials.Bench-top unit to study the thermal conduction resistance of different thermal insulating materials.
HEAT TRANSFER SERIES - TSTCB
  • TSTCB
Available
9.6.- 传播热量

TSTCB

热传递研究系列

The Heat Transfer Series, "TSTCB," has been designed by EDIBON to study and compare different types of heat transfer on a small scale. It allows a wide range of heat transfer demonstrations and study the factors affecting and problems associated...
LINEAR HEAT CONDUCTION MODULE FOR TSTCB - TXC/CLB
Available
9.6.- 传播热量

TXC/CLB

线性热传导设备(用于TSTCB)

配件 TSTCB
TXC/CLB. Linear Heat Conduction Unit for TSTCB: study of the principles of linear heat conduction and to allow the measurement of the conductivity of different solid conductors and insulators.Bench-top unit to study the principles of linear heat...
RADIAL HEAT CONDUCTION MODULE FOR TSTCB - TXC/CRB
Available
9.6.- 传播热量

TXC/CRB

径向热传导设备(用于TSTCB)

配件 TSTCB
TXC/CRB. Radial Heat Conduction Unit for TSTCB: study of the principles of radial heat conduction and to allow the measurement of conductivity on a solid brass disc.Bench-top unit to study the principles of radial heat conduction, and to allow the...
RADIATION HEAT TRANSFER MODULE FOR TSTCB - TXC/RCB
Available
9.6.- 传播热量

TXC/RCB

辐射传热设备(用于TSTCB)

配件 TSTCB
TXC/RCB. Radiation Heat Transfer Unit for TSTCB: study of the principles of heat transfer and exchange by radiation.Bench-top unit designed to demonstrate the laws of radiant heat transfer and radiant heat exchange.It basically consists of two...
EXTENDED SURFACE HEAT TRANSFER MODULE FOR TSTCB - TXC/SEB
Available
9.6.- 传播热量

TXC/SEB

扩展表面传热设备(用于TSTCB)

配件 TSTCB
TXC/SEB. Extended Surface Heat Transfer Unit for TSTCB: study of temperature profiles and heat transfer characteristics on an extended surface. It studies the effects of adding fins to a body to extend its surface to achieve a change in the...
UNSTEADY STATE HEAT TRANSFER MODULE FOR TSTCB - TXC/EIB
Available
9.6.- 传播热量

TXC/EIB

非稳态传热设备(用于TSTCB)

配件 TSTCB
TXC/EIB. Unsteady State Heat Transfer Unit for TSTCB: study of heat transfer in the non-stationary state Study of transient conduction with convection.Bench-top unit designed to allow practices and exercises to be performed in unsteady state heat...
THERMAL CONDUCTIVITY OF LIQUID AND GAS MODULE FOR TSTCB - TXC/LGB
Available
9.6.- 传播热量

TXC/LGB

液体和气体热导率设备(用于TSTCB)

配件 TSTCB
TXC/LGB. Thermal Conductivity of Liquid and Gas Unit for TSTCB: study of the thermal conductivity of any gas or liquid compatible with building materials.This unit has been designed to enable students to easily determine the thermal conductivity...
THREE AXES HEAT TRANSFER MODULE FOR TSTCB - TXC/TEB
Available
9.6.- 传播热量

TXC/TEB

三轴传热设备(用于TSTCB)

配件 TSTCB
TXC/TEB. Three Axes Heat Transfer Unit for TSTCB: study of heat transfer by studying the direction in the three axes.Bench-top unit designed to carry out heat transfer experiments and exercises studying the direction in three axes.
CERAMIC HEAT TRANSFER MODULE FOR TSTCB - TXC/TCB
Available
9.6.- 传播热量

TXC/TCB

用于TSTCB的陶瓷传热设备

配件 TSTCB
TXC/TCB. Ceramic Heat Transfer Unit for TSTCB: study of the heat transfer of different ceramic materials.Bench-top unit designed to study of the heat transfer of different ceramic materials.
INSULATING MATERIAL HEAT TRANSFER MODULE FOR TSTCB - TXC/TIB
Available
9.6.- 传播热量

TXC/TIB

用于TSTCB的绝缘材料传热设备

配件 TSTCB
TXC/TIB. Insulating Material Heat Transfer Unit for TSTCB: study of the resistance to thermal conduction of different thermal insulation materials.Bench-top unit to study the thermal conduction resistance of different thermal insulating materials.
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