SE7708165L - VARIETY METH DEVICE - Google Patents
VARIETY METH DEVICEInfo
- Publication number
- SE7708165L SE7708165L SE7708165A SE7708165A SE7708165L SE 7708165 L SE7708165 L SE 7708165L SE 7708165 A SE7708165 A SE 7708165A SE 7708165 A SE7708165 A SE 7708165A SE 7708165 L SE7708165 L SE 7708165L
- Authority
- SE
- Sweden
- Prior art keywords
- heat
- sensors
- comparators
- saw
- logic element
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K19/00—Testing or calibrating calorimeters
-
- 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
- G01K17/06—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device
- G01K17/08—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device based upon measurement of temperature difference or of a temperature
- G01K17/10—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device based upon measurement of temperature difference or of a temperature between an inlet and an outlet point, combined with measurement of rate of flow of the medium if such, by integration during a certain time-interval
- G01K17/12—Indicating product of flow and temperature difference directly or temperature
- G01K17/16—Indicating product of flow and temperature difference directly or temperature using electrical or magnetic means for both measurements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Measuring Volume Flow (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
This measures the quantity of heat dissipated by a fluid to a heat exchanger. It has a flow meter, one heat sensor each in the feed and return sides of the water circulation in the heat exchanger, a saw-tooth voltage generator (40), comparators (32, 33), and a counting clock generator (50). The heat sensors, which are constructed as linear measuring shunts (5, 9), are fed respectively from a constant-current source (17, 23), it being possible to switch the inputs (30, 31) of the comparators (32, 33) jointly to calibration resistors (22, 28). A logic element is driven in accordance with the difference between the voltages transmitted by the heat sensors and the saw-tooth voltage. In one circuit state of the logic element, the voltage pulses of the counting clock generator (50) are fed for display to a counting mechanism (47), the constancy of the currents through the heat sensors being guaranteed for the duration of a measurement period by being automatically calibrated at adjustable intervals by means of a control loop (50, 52, 55, 58). This device renders it possible to determine precisely a quantity of heat dissipated, e.g. in district heating, or a quantity of heat absorbed by a consumer. <IMAGE>
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE7622365 | 1976-07-15 | ||
DE7640480 | 1976-12-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
SE7708165L true SE7708165L (en) | 1978-01-16 |
Family
ID=25947823
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7708165A SE7708165L (en) | 1976-07-15 | 1977-07-14 | VARIETY METH DEVICE |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH618511A5 (en) |
FR (1) | FR2393286A1 (en) |
SE (1) | SE7708165L (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2441840A1 (en) * | 1978-11-14 | 1980-06-13 | Vicha | Tester for heat output of geothermal bore hole - involves contact with fluid whose cooling power is known, and uses U=shaped pipe in reservoir of refrigerant |
CH662884A5 (en) * | 1984-01-26 | 1987-10-30 | Ballmoos Ag Von | HEAT METER. |
CN102620863B (en) * | 2012-03-20 | 2014-07-16 | 杨焕诚 | Constant temperature difference measurement and control method and device for automatic displacement type heat meter |
WO2019157249A1 (en) * | 2018-02-08 | 2019-08-15 | Ih Ip Holdings Limited | Calibration methods for calorimeter |
WO2019157248A1 (en) * | 2018-02-08 | 2019-08-15 | Ih Ip Holdings Limited | Calibration methods for calorimeter |
CN108680286B (en) * | 2018-07-04 | 2019-12-10 | 杭州盘古自动化系统有限公司 | High-resolution heat flow signal measuring system used under high-magnetic environment wide-temperature area |
-
1977
- 1977-06-08 FR FR7717797A patent/FR2393286A1/en active Granted
- 1977-07-13 CH CH866177A patent/CH618511A5/en not_active IP Right Cessation
- 1977-07-14 SE SE7708165A patent/SE7708165L/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
FR2393286B3 (en) | 1980-04-04 |
CH618511A5 (en) | 1980-07-31 |
FR2393286A1 (en) | 1978-12-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |
Ref document number: 7708165-1 |