To assure that the equipment could work at both stable and efficient condition,these coils are held by the vacuum vessel thermal shield and crystat thermal shield that operate at 80K to pretent the radiant heat from the vacuum vessel and crystat and the conductive heat from the supports.

For the five kinds of hollow spherical corundum particles at a bed temperature of 950 ℃ and the fluidization number,U/Umf,in the range 1.1 to 4.0,the contributions to the overall heat coefficient from the surface temperature-averaged conductive heat transfer coefficient,the radiative heat transfer coefficient and the convective heat transfer coefficient are 57%～43%,37%～51% and 5%～3%,respectively.

The information from the temperature field at depths of the Yangbajing Geothermal Field offers a conductive heat flow value ranging from 83 to 108 mW/m2, whereas the measurements in the Laduogang and Yangyingxiang geothermal areas result in gaining conductive-convective heat flux data of 185mW/m2 and 194mW/m2, respectively.

Meso- to Neo-Proterozoic and Peleozoic carbonaterocks on the Cangxian uplift are capable of yielding 60-300 m3/h of 50-100℃ water from the wellsranging in depth between 1000 and 4000 m. Conductive heat flow of 64.48-124.35 mW/m2 from the deepcrust is responsible for these anomalous geothermal resources.

Neglecting conductive heat transfer, it is shown that for the model in question in the plane of the complex potential not only are the problems linear but the decoupling of the thermal and hydrodynamic problems is also allowed.

A self-similar solution describing the heat and mass transfer processes associated with radiative-conductive heat exchange between the walls of a plane channel and evaporation from one of the walls is obtained.

Calculation of channel flow with wall evaporation induced by radiative-conductive heat transfer

Below, a flow model and a method of calculating the flow in a narrow plane channel of finite length in the presence of evaporation or sublimation on one wall induced by radiative-conductive heat transfer from the other hot wall are proposed.

These flows are due to the effect of the heat-release source, the propagation of perturbations induced by elements of the rigid wall, and the dynamics of conductive heat transfer in the solid material.

Despite the lacking in observed conductive heat flows, an attempt has been made to divide the upper crust with depth up-to 10 km of the whole Xizang Plateau into superthermal, thermal and the normal states according to the hydrothermal manifestations omnipresent there and their quite different characteristics. The superthermal zone is present between the Himalayas and the Kangdese-Nyainqentanglha. This is the Himalayan Geothermal Belt. The thermal zone is located in the southern part of the Zangbei (Northern...

Despite the lacking in observed conductive heat flows, an attempt has been made to divide the upper crust with depth up-to 10 km of the whole Xizang Plateau into superthermal, thermal and the normal states according to the hydrothermal manifestations omnipresent there and their quite different characteristics. The superthermal zone is present between the Himalayas and the Kangdese-Nyainqentanglha. This is the Himalayan Geothermal Belt. The thermal zone is located in the southern part of the Zangbei (Northern Tibet) Plateau, while the northern part of this plateau is in the normal zone. Althougth a volcanic eruption occurred in the northern margin of the latter zone at 27 Oct. 1951, the chemistry of its lava suggests that it did not originate from intracrustal melting and the upper crust of the northern part of Zangbei Plateau might not be hot.

The crustal temperature distribution and conductive heat flows of the Himalayan region were estimated by non-linear finite element method.There are different crustal temperature structures in the Himalayan region. The temperature contour lines on the south of the Himalayan mountain range are relatively even and the conductive heat flows are less than 1.5 HFU, whereas on the north, the distribution of contour lines are clearly concentrated from the earth surface to 20 km depth. However, the contour...

The crustal temperature distribution and conductive heat flows of the Himalayan region were estimated by non-linear finite element method.There are different crustal temperature structures in the Himalayan region. The temperature contour lines on the south of the Himalayan mountain range are relatively even and the conductive heat flows are less than 1.5 HFU, whereas on the north, the distribution of contour lines are clearly concentrated from the earth surface to 20 km depth. However, the contour lines below 20 km are circularly distributed. The conductive heat flows on the north of Himalayan mountain range are from 1.5 HFU to 2.1 HFU.Based upon the analysis of the distribution of the temperature contour lines, a possible partial melting area has been drawn in the southern part of Xizang plateau and the result of this analysis ha,s been compared with those obtained from other geological and geophysical data.

In tnis paper an analytical method is proposed to predict the distribu-tion of the rate of entropy generation per unit volume in the boundary layer by means of the simultaneous solution of continuity, momentum, energy and entropy differential equations. Air is taken as an example to investigate the effects of the local Reynolds number, the Eckert number and the ratio of characteristic temperature difference to wall temperature on the distribution of the entropy generation in laminar boundary layer along a flat...

In tnis paper an analytical method is proposed to predict the distribu-tion of the rate of entropy generation per unit volume in the boundary layer by means of the simultaneous solution of continuity, momentum, energy and entropy differential equations. Air is taken as an example to investigate the effects of the local Reynolds number, the Eckert number and the ratio of characteristic temperature difference to wall temperature on the distribution of the entropy generation in laminar boundary layer along a flat plate. In addition, the rules that govern the change of entropy generation by conductive heat transfer and viscous dissipation are also discussed in this paper.This paper may offer some aids to understand the mechanism and the distribution of entropy generation as well as to overcome the irreversibility so as to provide menas for fully-utilizing the energy in the process of convective heat transfer.