CN204903433U - Testing arrangement of reflection thermal barrier coating material equivalence thermal resistance - Google Patents
Testing arrangement of reflection thermal barrier coating material equivalence thermal resistance Download PDFInfo
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- CN204903433U CN204903433U CN201520492222.XU CN201520492222U CN204903433U CN 204903433 U CN204903433 U CN 204903433U CN 201520492222 U CN201520492222 U CN 201520492222U CN 204903433 U CN204903433 U CN 204903433U
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Abstract
The utility model discloses a testing arrangement of reflection thermal barrier coating material equivalence thermal resistance utilizes hot case experimental, and the light and heat that sends through the infrared heating lamp is simulated the sunlight and is shone the temperature measurement, passes test the power consumption of different hot casees, the economize on electricity rate of the hot case of analysis reflection thermal barrier coating material to calculate the equivalent thermal resistance value that obtains reflection thermal barrier coating material. The utility model discloses an used problem that the method is too loaded down with trivial details of present calculation reflection thermal barrier coating material equivalence thermal resistance has been solved to the device, can be used to the calculation of building energy conservation field reflection thermal barrier coating material equivalence thermal resistance value and the aassessment of energy -conserving effect, also can promote the test of other wall bodies energy -conservation materials of this area according to actual conditions.
Description
Technical field
The utility model relates to a kind of heat resistance test apparatus, particularly relates to a kind of proving installation of reflective heat-insulation paint equivalent thermal resistance.
Background technology
Along with the promotion and application of architectural reflective heat-insulation paint, China has put into effect a series of relevant criterion.In September, 2008, house and town and country construction portion have issued building industry industry standard " architectural reflective heat-insulation paint " (JG/T235-2008), this standard mainly defines the heat-proof quality index of 4 products, be mainly the decay of sunshine reflectance, hemispherical emissivity, the heat insulation temperature difference and the heat insulation temperature difference, and introduce the method that the heat insulation temperature difference tested by its hot case.But heat insulation temperature difference index has higher requirements to analog light source, the wavelength of analog light source should as far as possible in visible region and near-infrared region that wavelength is 0.4 ~ 2.5 μm, and moulded dimension difference can affect the heat insulation temperature difference.Therefore effective energy-saving effect evaluation index can not be extended to." reflective heat-insulation paint for building " (GB/T25261-2010) proposes the concept of reflective heat-insulation paint equivalent thermal resistance, but it only provides the computing method of reflective heat-insulation paint in informative annex, the method needs to call annual meteorological data storehouse, various places, uses more inconvenient.The convenient effective reflective heat-insulation paint equivalent thermal resistance method of testing of complete set is not also provided in current specification.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, provides a kind of proving installation of reflective heat-insulation paint equivalent thermal resistance, to realize the equivalent thermal resistance of convenient effective acquisition reflective heat-insulation paint.
The proving installation of reflective heat-insulation paint equivalent thermal resistance of the present utility model, comprise the casing that four grades are large, 6 walls of each casing are the plasterboard of same thickness, wherein a casing is reference thermal case CKX casing, second cabinet wall 6 evenly scribbles the reflective heat-insulation paint of same thickness, for coating hot case TKY casing, the extruded sheet of same thickness is posted in 3rd cabinet exterior 6 face, for extruded sheet hot case JSB casing, the styrofoam of same thickness is posted in 4th cabinet exterior 6 face, is styrofoam hot case JBB casing; Every casing inner bottom part center is provided with a heat lamp, a temperature controller and an Intelligent electric power quantity metering instrument is equipped with outside every casing, temperature controller is connected with heat lamp in case, the sensor probe of temperature controller is arranged in corresponding casing apart from case top 1/3 ~ 1/2 place, the power consumption of the heat lamp in Intelligent electric power quantity metering instrument monitoring case, and these data are transferred to computer, all gaps on four casings all seal with glass cement.
The method of above-mentioned device to test reflective heat-insulation paint equivalent thermal resistance, comprises the steps:
1) power consumption test: temperature controller temperature in four casings is set to 36 DEG C, keep casing internal-external temperature difference more than 10 DEG C, the electricity consumption situation of the corresponding heat lamp of Intelligent electric power quantity metering instrument record, obtains the power consumption curve of heat lamp in four casings;
2) calculate power saving rate stationary value: with CKX case for reference, obtained the power saving rate curve of other three casings by the power consumption curve of heat lamp in four casings, computing formula is as follows:
Wherein, w is the power saving rate of casing t, and Q is the power consumption of this casing t, Q
cKXfor the power consumption of CKX casing t;
To the power saving rate curve of TKY, JBB, JSB tri-casings respectively matching obtain its corresponding power saving rate stationary value A, B, C;
3) casing thermal resistance is calculated: calculate CKX casing plasterboard used, JBB casing styrofoam used, the thermal resistance R1 of JSB casing extruded sheet used, R2, R3, computing formula is: R=d/ λ, and wherein d is respective material thickness, and λ is the coefficient of heat conductivity of respective material; Calculate CKX casing, JBB casing, the thermal resistance r1 of JSB casing, r2 and r3, r1=R1, r2=R2+R1, r3=R3+R1;
4) coating equivalent thermal resistance is calculated: to (0, r1), (B, r2), (C, r3) three points do matching, when correlativity is greater than 0.9, and the relation function of the casing thermal resistances such as acquisition and power saving rate stationary value, method of interpolation is adopted to be obtained the thermal resistance value r4 of this casing by the power saving rate stationary value A of TKY casing, deduct the thermal resistance R1 of plasterboard, obtain the equivalent thermal resistance r of reflective heat-insulation paint, r=r4-R1.
The beneficial effects of the utility model:
This device carrys out simulated solar irradiation by the light and heat that heat lamp sends and irradiates casing, obtain the power consumption of different hot case, the power saving rate of the hot case of analytical calculation reflective heat-insulation paint, the equivalent thermal resistance value of reflective heat-insulation paint can be calculated, method of the present utility model is simple and feasible, and the energy-saving effect of energy Efficient Characterization reflective heat-insulation paint, solve the problem that current computational reflect insulating moulding coating equivalent thermal resistance method used is too loaded down with trivial details, can be used for the reckoning of building energy saving field reflective heat-insulation paint equivalent thermal resistance value and the assessment of energy-saving effect, also can be generalized in the test of other body of wall energy-saving materials of this area according to actual conditions.
Accompanying drawing explanation
Fig. 1 is apparatus structure schematic diagram of the present utility model.
In figure, 1 is casing, and 2 is the sensor probe of temperature controller, and 3 is temperature controller, and 4 is Intelligent electric power quantity metering instrument, and 5 is heat lamp, and 6 is computer.
Fig. 2 is the power consumption curve of four casings.
Fig. 3 is the power saving rate curve of TKY casing, JSB casing and JBB casing.
Fig. 4, Fig. 5, Fig. 6 are respectively fitting result and the power saving rate curve comparison diagram of TKY casing, JSB casing and JBB casing.
Fig. 7 is the relation matched curve of power saving rate and thermal resistance value.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
This example reflective heat-insulation paint density used is 37kg/m
3, sunshine reflectance is 0.84, and hemispherical emissivity is 0.84.
With reference to Fig. 1, the proving installation of reflective heat-insulation paint equivalent thermal resistance of the present utility model, comprise the casing 1 that four grades are large, box house is of a size of 900mm × 900mm × 900mm, 6 walls of each casing are the plasterboard of thickness 12mm, wherein a casing is reference thermal case CKX casing, second cabinet wall 6 evenly scribbles the reflective heat-insulation paint of thickness 0.5mm, for coating hot case TKY casing, the extruded sheet of thickness 25mm is posted in 3rd cabinet exterior 6 face, for extruded sheet hot case JSB casing, the styrofoam of thickness 20mm is posted in 4th cabinet exterior 6 face, for styrofoam hot case JBB casing, every casing 1 inner bottom part center is provided with the heat lamp 5 that a power is 150W, a temperature controller 3(model menredE51.716 is equipped with outside every casing) and an Intelligent electric power quantity metering instrument 4(S350 type), temperature controller 3 is connected with heat lamp in case 5, the sensor probe 2 of temperature controller is arranged in corresponding casing apart from 300mm place, case top, can automatically regulate the opening of heat lamp 5 with the temperature set in maintaining heat case by temperature controller 3, Intelligent electric power quantity metering instrument 4 monitors the power consumption of the heat lamp 5 in case, and these data are transferred to computer 6, all gaps on four casings all seal with glass cement.
1) during electricity consumption energy consumption testing, in casing, temperature controller temperature is set to 36 DEG C, 1, installed vertical air-conditioning in test room, and for balancing indoor temperature, test room window window blind is pulled on, and avoids extraneous solar radiation on testing the impact caused as far as possible.The design temperature indoor at this duration of test (summer) is 26 DEG C, namely keeps the hot case internal-external temperature difference of more than 10 DEG C.Electricity measuring instrument records an electricity consumption situation every 1min, experimental test 36 hours.
Each hot case electricity consumption energy consumption as shown in Figure 2, can find out in the test process of whole 36 hours, due to the irradiation of heating lamp, the power consumption of 4 hot casees almost linearly rises, and only in hot case, infrared lamp stops power consumption in the time period of heating to be in plateau.Relatively 4 hot casees, in whole test process, power consumption is CKX, JBB, TKY, JSB from high to low successively, to the test 36h moment, the power consumption of CKX, JBB, TKY, JSB is respectively 3.70,2.66,1.84, the hot case of 1.51kWh, TKY(reflective heat-insulation paint) power consumption between JBB (the hot case of 20mm polyphenyl plate heat preserving) and JSB(25mm extruded sheet heat preservation hot case) between.
2) being the time dependent situation of more each hot case electricity rate directly perceived, take CKX as reference, by following computing formula:
Wherein, w is the power saving rate of casing t, and Q is the power consumption of this casing t, Q
cKXfor the power consumption of CKX casing t; Calculate the power saving rate change curve in time obtaining all the other each casings, as shown in Figure 3.
For selecting the power saving rate of heat producing box plateau, making process of fitting treatment respectively with the power saving rate curve of origin8.6 to TKY, JSB, JBB tri-casings, for ensureing the reliability of fitting result and True Data comparing result, not doing filtering process.Fitting result tests Data Comparison respectively as Figure 4-Figure 6 with true.
As can be seen from fitting result, the power saving rate of three casings
w tKY , W jSB , W jBB all with test duration t exponentially functional form:
Three's goodness of fit is respectively 0.949, and 0.908,0.948; Sum of square of deviations is respectively 2.73E-4,1.13E-4,1.42E-4.Fitting precision is higher, and error is less, and match value and experiment True Data relatively, observe exponential function known, along with the accumulation of test duration, and power saving rate
w tKY , W jSB , W jBB 46.05% is respectively, 59.16%, 31.49% when reaching stationary value.
3) coefficient of heat conductivity due to three kinds of materials (extruded sheet, styrofoam, plasterboard) is known, therefore can calculate and obtain its corresponding thermal resistance, as shown in table 1.
The thickness of table 1 three kinds of materials and thermal resistance
Therefore, the thermal resistance value that CKX, JSB, JBB tri-casings are corresponding and power saving rate can list in table 2:
The power saving rate of table 2 three casings and thermal resistance
| Hot case numbering | JSB | JBB | CKX |
| Power saving rate (%) | 59.16 | 31.49 | 0 |
| Thermal resistance (equivalent thermal resistance) (m 2） | 0.869 | 0.512 | 0.036 |
Note: thermal resistance (equivalent thermal resistance) be each casing thermal resistance, i.e. plasterboard thermal resistance and respective material thermal resistance sum herein.
4) CKX, JSB, the thermal resistance value that JBB tri-hot casees are corresponding and power saving rate known, thermal resistance value and power saving rate are all the quantizating index of material thermal and insulating performance, because the hot case power saving rate of TKY records, attempt by method of interpolation, utilize the correlativity of thermal resistance value and power saving rate, calculate the equivalent thermal resistance value of this reflective heat-insulation paint.Be specially:
Three points that the power saving rate corresponding to CKX, JSB, JBB tri-casings and thermal resistance value are formed carry out matching, and obtain matched curve as shown in Figure 7, related coefficient is 0.996, and method of interpolation is suitable for.The relation function of power saving rate x and thermal resistance y can be obtained, y=0.0141x+0.0462, then can by this reflective heat-insulation paint equivalent thermal resistance value of interpolation calculation.
The thermal resistance of TKY casing is 0.0141 × 46.05+0.0462=0.696m
2k/W, therefore the equivalent thermal resistance of reflective heat-insulation paint is 0.696-0.036=0.66m
2k/W.
Claims (4)
1. the proving installation of a reflective heat-insulation paint equivalent thermal resistance, it is characterized in that, comprise the casing (1) that four grades are large, 6 walls of each casing are the plasterboard of same thickness, wherein a casing is reference thermal case CKX casing, second cabinet wall 6 evenly scribbles the reflective heat-insulation paint of same thickness, for coating hot case TKY casing, the extruded sheet of same thickness is posted in 3rd cabinet exterior 6 face, for extruded sheet hot case JSB casing, the styrofoam of same thickness is posted in 4th cabinet exterior 6 face, is styrofoam hot case JBB casing; Every casing (1) inner bottom part center is provided with a heat lamp (5), a temperature controller (3) and an Intelligent electric power quantity metering instrument (4) is equipped with outside every casing (1), temperature controller (3) is connected with heat lamp in case (5), the sensor probe (2) of temperature controller is arranged in corresponding casing apart from case top 1/3 ~ 1/2 place, the power consumption of the heat lamp (5) in Intelligent electric power quantity metering instrument (4) monitoring case, and these data are transferred to computer (6), all gaps on four casings all seal with glass cement.
2. the proving installation of reflective heat-insulation paint equivalent thermal resistance according to claim 1, is characterized in that, four described casings, each casing is of a size of 900mm × 900mm × 900mm.
3. the proving installation of reflective heat-insulation paint equivalent thermal resistance according to claim 1, is characterized in that, the described power being placed in the heat lamp in every casing is 150W.
4. the proving installation of reflective heat-insulation paint equivalent thermal resistance according to claim 1, is characterized in that, described plasterboard thickness is 12mm, and reflective heat-insulation paint thickness is 0.5mm, and extruded sheet thickness is 25mm, and styrofoam thickness is 20mm.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964999A (en) * | 2015-07-08 | 2015-10-07 | 浙江大学 | Device and method for testing equivalent thermal resistance of reflective thermal insulation coating material |
| CN109187629A (en) * | 2018-09-04 | 2019-01-11 | 成都市科创节能材料有限公司 | A kind of equivalent thermal resistance and thermal coefficient detection method of insulating mold coating for building |
| CN109298013A (en) * | 2018-11-01 | 2019-02-01 | 中国建材检验认证集团股份有限公司 | A kind of building thermal insulation material equivalent thermal resistance measuring system and measurement method |
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2015
- 2015-07-08 CN CN201520492222.XU patent/CN204903433U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964999A (en) * | 2015-07-08 | 2015-10-07 | 浙江大学 | Device and method for testing equivalent thermal resistance of reflective thermal insulation coating material |
| CN109187629A (en) * | 2018-09-04 | 2019-01-11 | 成都市科创节能材料有限公司 | A kind of equivalent thermal resistance and thermal coefficient detection method of insulating mold coating for building |
| CN109298013A (en) * | 2018-11-01 | 2019-02-01 | 中国建材检验认证集团股份有限公司 | A kind of building thermal insulation material equivalent thermal resistance measuring system and measurement method |
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