CN2828810Y - Cold-heat box type heat=transfer coefficient investigating instrument - Google Patents
Cold-heat box type heat=transfer coefficient investigating instrument Download PDFInfo
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- CN2828810Y CN2828810Y CN 200520001892 CN200520001892U CN2828810Y CN 2828810 Y CN2828810 Y CN 2828810Y CN 200520001892 CN200520001892 CN 200520001892 CN 200520001892 U CN200520001892 U CN 200520001892U CN 2828810 Y CN2828810 Y CN 2828810Y
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- box
- heat
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- hot
- ice chest
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Abstract
The utility model relates to a cold-heat box type detector for heat transfer coefficients, which comprises a heat box, a cold box, a control box, a refrigerating machine and a heater, wherein one side of a measured object is provided with the heat box which provides a one-dimensional heat transfer stable heat source, the other side of the measured object can be provided with the cold box or outdoor natural environment, and temperature sensors are evenly distributed on the inner and the outer sides and the inner and the outer surfaces of the measured object; a heat box heater and a heat-insulating layer are arranged on the inner wall of a box body of the heat box, a temperature sensor probe is in the heat box, and the heat box and the heater are connected with the control box; the refrigerating machine and a heat-insulating layer are arranged on the inner wall of a box body of the cold box, a temperature sensor probe is in the cold box and the cold box is connected with the refrigerating machine. The utility model used for detecting a building cladding heat transfer coefficient solves the problem that building cladding on-site detection can not be carried out at all seasons.
Description
One, technical field
It is the important content of building energy conservation test that building enclosure structure heat transfer coefficient detects, and by the heat transfer capacity of measuring unit's area building enclosure and the air temperature difference inside and outside the hot case, records the heat transfer coefficient of building enclosure.
Two, background technology
Universal with the technology of hot case method test architecture member heat transfer coefficient both at home and abroad at present, but hot case method is applied to not being reported of on-the-spot test enclosure structure heat transfer coefficient.Be used at present the on-the-spot technology that detects of energy saving building both at home and abroad and mainly contain heat flow meter method and infrared thermal imagery method, heat flow meter method on-the-spot test enclosure structure heat transfer coefficient must carry out the coldest month of heating phase, and each heat flow meter test is a point, effectively working area is little, and accuracy of measurement is poor; The infrared thermal imagery method must be under the indoor situation that thermal source arranged the thermal property of test architecture thing, and the result of test is thermal defects, i.e. the defectiveness that the insulation at which position is done can not carry out quantitative measurment to the thermal property of building enclosure.
Three, utility model content
The purpose of this utility model provides a kind of cold-hot box type heat transfer coefficient detecting instrument, needs the problem that solves:
(1) all can carry out the on-the-spot detection of buildings exterior-protected structure throughout the year.
(2) air themperature is asynchronous with indoor air temperature in the hot case, makes the test result error big.
(3) the accurate control of air themperature in the hot case.
(4) antijamming capability of enhancing instrument.
Solution:
(1) adopt ice chest to reduce outdoor test air themperature.
(2) adopt the identical temperature sensors of high precision of error.
(3) temperature control system of hot case adopts PID temperature control regulating system, fuzzy rule computing.Adopt high speed, high-resolution AD reforming unit, as the counting assembly of power consumption
(4) modular structure is adopted in system design, and strong and weak electricity separates.
This cold-hot box type heat transfer coefficient detecting instrument has the function of on-the-spot test enclosure structure heat transfer coefficient, it is characterized in that: at testee one side a hot case that provides one dimensional heat transfer to stablize thermal source is arranged; Can put ice chest or outdoor physical environment at the testee opposite side, the interior outside and the interior appearance of testee are evenly equipped with temperature sensor.
Described hot case, cabinet wall are furnished with hot case well heater and heat-insulation layer, and temperature sensor probe is in hot case, and hot case links to each other with control box with well heater.
Described ice chest cabinet wall is furnished with refrigeration machine and heat-insulation layer, and temperature sensor probe is in ice chest, and ice chest links to each other with refrigeration machine.
Described principle is the supposition one dimensional heat transfer, it is characterized in that: with hot case simulation indoor environment, it is consistent with indoor air temperature to control the interior air themperature of hot case, outdoor for using ice chest simulating chamber external environment or physical environment, indoor temperature and hot the temperature inside the box are higher than temperature in outdoor temperature or the ice chest all the time, make heat all the time from indoor to outdoor transmission.
The thermal resistance of described hot tank wall is greater than 0.5m
2K/W, aperture area is greater than 0.2m
2The thermal resistance of ice chest wall is greater than 0.5m
2K/W, aperture area is greater than 0.3m
2
When outdoor temperature is higher, use ice chest simulating chamber external environment condition, make the interior temperature of ice chest be lower than indoor control temperature.
Described is one dimensional heat transfer principle and detection method and equipment, it is characterized in that: detect principle: be the one dimensional heat transfer principle; Detecting instrument comprises: hot case, ice chest, control box, refrigeration machine, well heater etc.
Hot case method detects the principle that enclosure structure heat transfer coefficient is based on " one dimensional heat transfer ": promptly the tested position of building enclosure has two substantially parallel surfaces, and its length and width are far longer than its thickness, is considered as infinitely great dull and stereotyped.Make under the one dimensional heat transfer environment artificial, the inboard at tested position is with hot case simulation heating building indoor conditions, and makes in the hot case and be consistent with indoor air temperature, and opposite side is outdoor natural conditions or ice chest.Maintaining heat the temperature inside the box is higher than outdoor temperature all the time, the heat that makes tested position always from indoor to outdoor transmission, formed one dimensional heat transfer, when adding heat in the hot case and reach balance with the heat that transmits by tested position, hot case add the heat transfer capacity that heat is exactly tested position.Obtain the heat transfer coefficient value at tested position through computing.
Simultaneously for avoiding interference, make the test data of building enclosure more level off to actual conditions, the data of all collections all can be converted into the Excel form at last, make things convenient for the testing staff by computer measured data to be analyzed.The parts that detector comprises have:
1, hot case: aperture area is greater than 0.2m
2, the outer wall thermal resistance value should be greater than 0.5m
2K/W, heating power is greater than 20W.
2, ice chest: aperture area is greater than 0.3m
2, the outer wall thermal resistance value should be greater than 0.5m
2K/W.
3, refrigeration machine: refrigeration work consumption is greater than 50W.
4, control box: mainly be used for gathering each point temperature, hot case power equivalent and control, computing, storage.
5, temperature sensor: adopt platinum resistance temperature sensor or thermopair.
6, indoor heating controller.
7, well heater.
8, vaulting pole.
9, test software, interface line, switching software.
Cold-hot box type heat transfer coefficient detecting instrument is with the outside various inputs of Single-chip Controlling, output signal, thereof using PID, and digital filtering technique has improved the reliability of system.Testing process need not on duty, preserves the overall process measurement result automatically; Other has communication interface measurement result can be uploaded to computing machine, is convenient to data processing and preservation.
This instrument is applicable to the on-the-spot energy-conservation detection of buildings exterior-protected structure, has realized not being subjected to the on-the-spot enclosure structure heat transfer coefficient of heating time limit system to detect.
Four, description of drawings
Fig. 1 is that the utility model detects principle schematic.
1-building enclosure 1 among the figure; The hot case A of 2-; The 3-well heater; The indoor heating controller of 4-; 5-contains the ice chest water-bath of refrigeration machine; The hot case B of 6-; 7-building enclosure 2; 8-ice chest B; The 9-control box; 10-ice chest A.
T
1-A case outside air temperature, T
2The outdoor wall table of-A case temperature, T
3Air themperature in the-A case case, T
4The indoor wall table of-A case temperature, T
5-indoor air temperature, T
6Air themperature in the-B case case, T
7The indoor wall table of-B case temperature, T
8-B case outside air temperature, T
9The outdoor wall table of-B case temperature.
Five, embodiment
1, selected tested building enclosure is measured tested surface of wall Temperature Distribution with infrared thermometer, and the position of selecting uniformity of temperature profile is as the measured position.Fixed chamber interior wall table temperature sensor.The opening end of hot case is abutted against the measured position, for reaching airtight, should be at the hot case back side with jail, strut top.Confirm airtight.
2, fixed chamber exterior wall table temperature sensor is located at the center of relatively hot case, is close to the wall table, and sensor end is blocked with tinfoil, keeps out of the direct sun; When outdoor temperature is higher, use ice chest simulating chamber external environment condition, make the interior temperature of ice chest be lower than indoor control temperature; Fixed chamber outer air temperature sensor leaves under the shade of wall table 10～20cm, and radiation shield is installed.Fixing room air temperature sensor is located at tested room central authorities, apart from ground 1.5m place, and radiation shield is installed.
3, connect each temperature probe, control box and hot case etc.
4, the relevant position that hot case heating plug is inserted control box
5, heating electric heater in the junction chamber.
6, turn on the power switch, System self-test is operated according to screen display.
7, test automatically.
8, detection is finished with computer acquisition and arrangement.
9, by garbled data, reject underproof data item, can calculate the Coefficient K value of tested building enclosure.
10, preserve data file, generate 2 files, raw data file can not be revised, and another file can carry out data processing with EXCEL.
Claims (2)
1, a kind of cold-hot box type heat transfer coefficient detecting instrument is characterized in that:
It comprises: hot case, ice chest, control box, refrigeration machine, well heater;
At testee one side a hot case that provides one dimensional heat transfer to stablize thermal source is arranged; Can put ice chest or outdoor physical environment at the testee opposite side, the interior outside and the interior appearance of testee are evenly equipped with temperature sensor;
Above-mentioned hot box body inwall is furnished with hot case well heater and heat-insulation layer, and temperature sensor probe is in hot case, and hot case links to each other with control box with well heater;
Above-mentioned ice chest cabinet wall is furnished with refrigeration machine and heat-insulation layer, and temperature sensor probe is in ice chest, and ice chest links to each other with refrigeration machine.
2, cold-hot box type heat transfer coefficient detecting instrument according to claim 1 is characterized in that: the thermal resistance of hot tank wall is greater than 0.5m
2K/W, aperture area is greater than 0.2m
2The thermal resistance of ice chest wall is greater than 0.5m
2K/W, aperture area is greater than 0.3m
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520001892 CN2828810Y (en) | 2005-02-03 | 2005-02-03 | Cold-heat box type heat=transfer coefficient investigating instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520001892 CN2828810Y (en) | 2005-02-03 | 2005-02-03 | Cold-heat box type heat=transfer coefficient investigating instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2828810Y true CN2828810Y (en) | 2006-10-18 |
Family
ID=37080366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520001892 Expired - Fee Related CN2828810Y (en) | 2005-02-03 | 2005-02-03 | Cold-heat box type heat=transfer coefficient investigating instrument |
Country Status (1)
| Country | Link |
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| CN (1) | CN2828810Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2536702A (en) * | 2015-03-26 | 2016-09-28 | Senico Ltd | Determining the U-value of a wall or other construction element |
| CN112433547A (en) * | 2019-05-22 | 2021-03-02 | 河南工业职业技术学院 | Heat dissipation temperature control system for control cabinet |
| WO2021169350A1 (en) * | 2020-02-25 | 2021-09-02 | 贵州中建建筑科研设计院有限公司 | Device and method for dynamically testing thermal performance of building wall |
-
2005
- 2005-02-03 CN CN 200520001892 patent/CN2828810Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2536702A (en) * | 2015-03-26 | 2016-09-28 | Senico Ltd | Determining the U-value of a wall or other construction element |
| CN112433547A (en) * | 2019-05-22 | 2021-03-02 | 河南工业职业技术学院 | Heat dissipation temperature control system for control cabinet |
| CN112433547B (en) * | 2019-05-22 | 2022-02-15 | 石家庄华泰电力工具有限公司 | Heat dissipation temperature control system for control cabinet |
| WO2021169350A1 (en) * | 2020-02-25 | 2021-09-02 | 贵州中建建筑科研设计院有限公司 | Device and method for dynamically testing thermal performance of building wall |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHONGJIAN BUILDING SCIENCE & TECHNOLOGY INST., BE Free format text: FORMER OWNER: ZHONGJIAN BUILDING SCIENCE + TECHNOLOGY INST., BEIJING Effective date: 20070720 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070720 Address after: 100076 Beijing, Nanyuan, Xinhua Road, Fengtai District No. 1 Co-patentee after: CHINA CONSTRUCTION FIRST BUILDING (GROUP) CORPORATION LIMITED Patentee after: Zhongjian Architecture Science-Technology Academy, Beijing Address before: 100076 Beijing, Nanyuan, Xinhua Road, Fengtai District No. 1 Patentee before: Zhongjian Architecture Science-Technology Academy, Beijing |
|
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING ZHONGJIAN ARCHITECTURAL SCIENCE INSTITUTE Free format text: FORMER NAME OR ADDRESS: ZHONGJIAN BUILDING SCIENCE + TECHNOLOGY INST., BEIJING; PATENTEE |
|
| CP01 | Change in the name or title of a patent holder |
Address after: No. 1, Nanyuan, Fengtai District, Beijing, Xinhua Road, China: 100076 Co-patentee after: CHINA CONSTRUCTION FIRST BUILDING (GROUP) CORPORATION LIMITED Patentee after: Beijing Zhongjian Building Science Research Institute Co., Ltd. Address before: No. 1, Nanyuan, Fengtai District, Beijing, Xinhua Road, China: 100076 Co-patentee before: CHINA CONSTRUCTION FIRST BUILDING (GROUP) CORPORATION LIMITED Patentee before: Beijing Institute of construction and science and technology |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061018 Termination date: 20130203 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |