Verhalten der Kohlesteinisolierung bei vertikaler Versuchsanordnung
Verhalten der Kohlesteinisolierung bei vertikaler Versuchsanordnung
Further investigations an the Kohlestein insulation have been carried out. The test section was mounted in vertical position. The insulation consists of five carbon rings. During the First experiments in the HD-channel the gaps between the rings caused increased hegt fluxes due to axial pressure gra...
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Personal Name(s): | Bröckerhoff, P. (Corresponding author) |
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Contributing Institute: |
Publikationen vor 2000; PRE-2000; Retrocat |
Imprint: |
Jülich
Kernforschungsanlage Jülich, Zentralbiliothek, Verlag
1980
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Physical Description: |
49 p. |
Document Type: |
Report Book |
Research Program: |
Addenda |
Series Title: |
Berichte der Kernforschungsanlage Jülich
1659 |
Link: |
OpenAccess |
Publikationsportal JuSER |
Further investigations an the Kohlestein insulation have been carried out. The test section was mounted in vertical position. The insulation consists of five carbon rings. During the First experiments in the HD-channel the gaps between the rings caused increased hegt fluxes due to axial pressure gradients and unsymmetrical temperature distributions along the pressure tube. Therefore all the gaps have been sealed. Thus, lower thermal fluxes and more uniform temperatures have been achieved. lt was the aim of this research to test the insulation subjected to higher hot gas temperatures. During the experiments in the HD-channel a maximum temperature of only 400 °C could be reached. An electrical heater, which was subdivided along the height, was used to get higher surface temperatures. Thus, the condition of nearly constant wall temperatures could be fulfilled. A maximum temperature of 570 °C was reached using helium as coolant. The maximum air temperatures were restricted to 300 °C because of corrosion. The maximum pressure was 40 bars. The temperature distributions within the third ring and along the pressure tube were uniform. The thermal fluxes and effective thermal conductivities were almost undependent upon the pressure. The results show that further improvements cannot be expected. |