GB1313200A - Heat flow meter - Google Patents
Heat flow meterInfo
- Publication number
- GB1313200A GB1313200A GB1313200DA GB1313200A GB 1313200 A GB1313200 A GB 1313200A GB 1313200D A GB1313200D A GB 1313200DA GB 1313200 A GB1313200 A GB 1313200A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heat flow
- plate
- thermocouple
- junctions
- resistance plate
- 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.)
- Expired
Links
- 239000010410 layer Substances 0.000 abstract 6
- 239000010445 mica Substances 0.000 abstract 3
- 229910052618 mica group Inorganic materials 0.000 abstract 3
- 230000005855 radiation Effects 0.000 abstract 3
- 239000010453 quartz Substances 0.000 abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 229910000809 Alumel Inorganic materials 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 229910001006 Constantan Inorganic materials 0.000 abstract 1
- 229910004298 SiO 2 Inorganic materials 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 229910001179 chromel Inorganic materials 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000011241 protective layer Substances 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 238000007738 vacuum evaporation Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/10—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
- G01J5/12—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors using thermoelectric elements, e.g. thermocouples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K17/00—Measuring quantity of heat
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
1313200 Thermoelectric devices SHOWA DENKO KK 30 Dec 1970 61844/70 Heading H1K A heat flow meter comprising a thermal resistance plate provided with a differential thermocouple to measure the temperature difference between its faces and hence the heat flow, is provided with a covering portion comprising a thermally conductive layer for equalizing the heat flow through the resistance plate and a thermal radiation controlling layer. In a first embodiment, Figs. 2 and 4, the basic meter portion A comprises a thermal resistance plate of mica or quartz or of anodized Ta or A1 and a differential thermocouple comprising strips 2, 2a of constantan joined by a connector 4 of the same material, and strips 3, 3a of Cu providing junctions 9, 9a, the strips being applied by vacuum evaporation. The surfaces of the meter portion A are provided with covers C comprising plate 5 of mica or quartz carrying layers 6 of Ag, Cu or Al to equalize the heat flow across the area of the device, radiation control layers 7, e.g. of carbon, and protective layers 8 of SiO or SiO 2 . The cover C may be omitted from one side of the device if measuring conditions permit. The assembly may be mounted in a dished casing and retained by a threaded ring, Fig. 6 (not shown). In a second embodiment, Fig .7 (not shown), a plurality of thermocouple junctions are provided on both faces of the resistance plate and are interconnected to form a differential assembly. A single thermometer element is mounted at the centre of the plate so that the actual temperature can be measured. In a further embodiment, Figs. 8 and 9 (not shown), " Alumel " (Registered Trade Mark)- Chromel thermocouple are arranged on both sides of a thermal resistance plate so that the junctions are spaced from the surfaces of the plate. Thin electrically insulating covers are provided which define two cells within which air layers having a high thermal resistance are trapped so that the thermocouple junctions experience a greater temperature differential than if the surrounding spaces were filled with mica. The colour of the radiation controlling layer may be selected to correspond to that of the surface on which the device is mounted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB6184470 | 1970-12-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1313200A true GB1313200A (en) | 1973-04-11 |
Family
ID=10487538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1313200D Expired GB1313200A (en) | 1970-12-30 | 1970-12-30 | Heat flow meter |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1313200A (en) |
-
1970
- 1970-12-30 GB GB1313200D patent/GB1313200A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |