GB2140259A - Heat flux simulators - Google Patents

Heat flux simulators Download PDF

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Publication number
GB2140259A
GB2140259A GB08314030A GB8314030A GB2140259A GB 2140259 A GB2140259 A GB 2140259A GB 08314030 A GB08314030 A GB 08314030A GB 8314030 A GB8314030 A GB 8314030A GB 2140259 A GB2140259 A GB 2140259A
Authority
GB
United Kingdom
Prior art keywords
heat flux
flux
electrode
electrodes
simulator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB08314030A
Other versions
GB8314030D0 (en
Inventor
Robert George Howell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Priority to GB08314030A priority Critical patent/GB2140259A/en
Publication of GB8314030D0 publication Critical patent/GB8314030D0/en
Publication of GB2140259A publication Critical patent/GB2140259A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C17/00—Monitoring; Testing ; Maintaining
    • G21C17/001—Mechanical simulators
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

The simulator has a uniform external electrode (10) and a shaped internal electrode (11) with insulant (13) between the electrodes. The electrodes are connected in series at an end disc (14). <IMAGE>

Description

SPECIFICATION Heat Flux Simulators This invention relates to heat flux simulators.
It is well known in the nuclear research and development work to use electrical heaters to simulate heat flux that could arise from burning nuclear fuel in the form of long fuel pins. A requirement now exists for a heat flux simulator in which there is provided an axial heat flux step change at a specified location.
This requirement is met in accordance with the invention by forming an electrical heater so as to have an external and internal electrode in which the internal electrode is shaped to the required flux profile.
The invention will now be described further with reference to the accompanying drawing which is a diagrammatic sectional view.
An electrical heater has an external electrode 10 in the form of a uniform "KANTHAL" tube typically of 0.225 mm wali thickness and an Internal electrode 11 of similar material but being solid and having a step 12 so as to generate a stepped flux profile. The electrodes are spaced apart by an insulant 13 and are connected together by a disc 14. Connections 15, 1 6 to the heater are provided at a single end.
The heat flux is derived from both electrodes.
The outer electrode provides a "carrier" flux which is "modulated" by the flux from the inner electrode. Both electrodes contribute significantly to the heat flux.
1. A simulator for the heat flux from nuclear fuel pins comprising an electrical heater having an external and an internal heat generating electrode in which the internal electrode is shaped to give a required flux profile.
2. A simulator as claimed in claim 1 in which the external electrode is uniform tube and the internal electrode is solid, the electrodes being connected together in series and spaced apart by insulant.
3. A simulator as claimed in claim 1 substantially as hereinbefore described with reference to the drawing.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (3)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Heat Flux Simulators This invention relates to heat flux simulators. It is well known in the nuclear research and development work to use electrical heaters to simulate heat flux that could arise from burning nuclear fuel in the form of long fuel pins. A requirement now exists for a heat flux simulator in which there is provided an axial heat flux step change at a specified location. This requirement is met in accordance with the invention by forming an electrical heater so as to have an external and internal electrode in which the internal electrode is shaped to the required flux profile. The invention will now be described further with reference to the accompanying drawing which is a diagrammatic sectional view. An electrical heater has an external electrode 10 in the form of a uniform "KANTHAL" tube typically of 0.225 mm wali thickness and an Internal electrode 11 of similar material but being solid and having a step 12 so as to generate a stepped flux profile. The electrodes are spaced apart by an insulant 13 and are connected together by a disc 14. Connections 15, 1 6 to the heater are provided at a single end. The heat flux is derived from both electrodes. The outer electrode provides a "carrier" flux which is "modulated" by the flux from the inner electrode. Both electrodes contribute significantly to the heat flux. CLAIMS
1. A simulator for the heat flux from nuclear fuel pins comprising an electrical heater having an external and an internal heat generating electrode in which the internal electrode is shaped to give a required flux profile.
2. A simulator as claimed in claim 1 in which the external electrode is uniform tube and the internal electrode is solid, the electrodes being connected together in series and spaced apart by insulant.
3. A simulator as claimed in claim 1 substantially as hereinbefore described with reference to the drawing.
GB08314030A 1983-05-20 1983-05-20 Heat flux simulators Withdrawn GB2140259A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08314030A GB2140259A (en) 1983-05-20 1983-05-20 Heat flux simulators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08314030A GB2140259A (en) 1983-05-20 1983-05-20 Heat flux simulators

Publications (2)

Publication Number Publication Date
GB8314030D0 GB8314030D0 (en) 1983-06-29
GB2140259A true GB2140259A (en) 1984-11-21

Family

ID=10543104

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08314030A Withdrawn GB2140259A (en) 1983-05-20 1983-05-20 Heat flux simulators

Country Status (1)

Country Link
GB (1) GB2140259A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0709858A1 (en) * 1994-10-25 1996-05-01 General Electric Company Apparatus and method for simulating a nuclear fuel rod bundle transient

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107180656B (en) * 2017-05-16 2024-04-09 中广核研究院有限公司 Heating device for simulating dead pipe section phenomenon of nuclear power station

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0709858A1 (en) * 1994-10-25 1996-05-01 General Electric Company Apparatus and method for simulating a nuclear fuel rod bundle transient

Also Published As

Publication number Publication date
GB8314030D0 (en) 1983-06-29

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)