CN104569040A - Device for measuring energy saving performance of energy storage phase change microcapsule - Google Patents
Device for measuring energy saving performance of energy storage phase change microcapsule Download PDFInfo
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- CN104569040A CN104569040A CN201410805817.6A CN201410805817A CN104569040A CN 104569040 A CN104569040 A CN 104569040A CN 201410805817 A CN201410805817 A CN 201410805817A CN 104569040 A CN104569040 A CN 104569040A
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Abstract
The invention discloses a device for measuring the energy saving performance of an energy storage phase change microcapsule. The device comprises an infrared heat lamp, an energy storage microcapsule measuring box, thermocouples, a thermocouple temperature measuring module, a first data connecting wire, an RS232 and RS485 signal conversion module, a second data connecting wire, a USB-to-RS232 converter, a connecting wire between the USB-to-RS232 converter and a computer, the computer, a thermocouple compensation lead and a blank microcapsule measuring box, wherein the thermocouples are arranged in the energy storage microcapsule measuring box and the blank microcapsule measuring box respectively and are connected with the thermocouple temperature measuring module by virtue of the thermocouple compensation lead; the thermocouple temperature measuring module is connected with the RS232 and RS485 signal conversion module by virtue of the first data connecting wire; and the RS232 and RS485 signal conversion module is connected with the USB-to-RS232 converter by virtue of the second data connecting wire. The device disclosed by the invention is simple in structure, is convenient and practical, and is used for well solving the problems of measuring the macroscopic energy saving performance of the energy storage phase change microcapsule and measuring the long-term service stability of the energy storage phase change microcapsule.
Description
Technical field
The present invention relates to energy storage material performance testing device, be specifically related to a kind of energy storage phase-change microcapsule energy-efficient performance measurement mechanism.
Background technology
Ergastic substances can be encapsulated in microcapsules and be transformed into countless small working cell by energy storage phase-change microcapsule, can make it have special nature and purposes, can the field such as widespread use and coating, fire retardant, textile.The working mechanism of energy storage phase-change microcapsule mainly utilizes the phase change material be encapsulated in microcapsules to undergo phase transition in different environments, utilize latent heat of phase change to reach fire-retardant, insulation, the object such as less temperature fluctuation.At present the test of energy storage phase-change microcapsule micro-property aspect is had to the instrument of many precisions, but lack relatively simple and practical for the test of macro property, be convenient to the method for practical operation.When measuring energy-efficient performance on coating for wall surface of energy storage phase-change microcapsule as needed, real process is the coating needing to be coated by a certain size room interior wall containing energy storage phase-change microcapsule, carries out within a certain period of time freezing and heating and carry out contrast experiment with the identical room do not coated containing enteric coating.The consistance that such experiment is not only difficult to control surrounding enviroment condition (can certainly pay huge cost, build metastable surrounding enviroment), also need to consume relatively many microcapsules, this says not to be a kind of very feasible method always for the project still in the experimental study stage simultaneously.
In order to solve the difficulty of encountering in the test of above-mentioned energy storage phase-change microcapsule macro property, the present invention proposes the method that a kind of pair of house is measured simultaneously, the less to greatest extent impact of environmental fluctuating on measuring process, utilize thermometry simultaneously, various data can be obtained easily by USB interface, improve measuring accuracy.
Summary of the invention
The present invention is directed to the difficulty of encountering in the test of above-mentioned energy storage phase-change microcapsule macro property, propose a kind of energy storage phase-change microcapsule energy-efficient performance measurement mechanism.
In the present invention, the glass surface of two identical closets coats phase-change material and blank material respectively, under it is placed in infrared heating lamp symmetrically.Each closet interior installation No. 3 thermopairs totally No. 6 thermopairs are used for measuring tempeature, temperature signal in closet is entered RS485 RS 232 converter with the form of RS485 by A/D modular converter by thermopair, then turns USB wiring by RS232 and be directly connected with the USB interface of computing machine.The A/D modular converter utilizing supplier to provide, obtains the temperature of No. 6 thermopairs, is determined energy-efficient performance and the thermal stability of energy storage phase-change microcapsule by the change of temperature.
The present invention is realized by following technology:
A kind of energy storage phase-change microcapsule energy-efficient performance measurement mechanism, it is characterized in that, described device comprises heat lamp, accumulation energy microcapsule measuring box, thermopair, electric thermo-couple temperature measurement module, the first data connecting line, RS232 and RS485 signal conversion module, the second data connecting line, USB RS 232 converter, connecting line, computer, compensation lead of thermocouple and blank microcapsules measuring box between USB RS 232 converter and computer; Be respectively arranged with more than one pair of thermopair in described accumulation energy microcapsule measuring box and blank microcapsules measuring box, described thermopair is connected with electric thermo-couple temperature measurement module by compensation lead of thermocouple; Described electric thermo-couple temperature measurement module is connected with RS232 and RS485 signal conversion module by the first data connecting line, described RS232 and RS485 signal conversion module is connected with USB RS 232 converter by the second data connecting line, and described USB RS 232 converter is connected with the USB interface of computer; Described heat lamp is just to accumulation energy microcapsule measuring box and blank microcapsules measuring box.In the present invention, utilize except glass surface is coated with material difference during measurement, other all identical accumulation energy microcapsule measuring boxes and blank microcapsules measuring box are measured simultaneously, and eliminating environmental change to greatest extent affects measurement result.
In said apparatus, described accumulation energy microcapsule measuring box is made up of wood plank, aluminium-foil paper heat-preservation cotton, groove and glass plate; Described accumulation energy microcapsule measuring box is double-deck rectangular structure, and internal layer is identical wood plank, and skin is aluminium-foil paper heat-preservation cotton; Left and right, rear three central points of described accumulation energy microcapsule measuring box all have one for installing the aperture of thermopair.
In said apparatus, left and right, rear three faces of perforate are provided with the groove of a transverse direction, and glass plate is inserted in accumulation energy microcapsule measuring box by groove.
In said apparatus, the material of described glass plate is common white glass; The glass plate inserted in accumulation energy microcapsule measuring box contains energy storage phase-change microcapsule.
In said apparatus, described blank microcapsules measuring box is made up of wood plank, aluminium-foil paper heat-preservation cotton, groove and glass plate; Described blank microcapsules measuring box is double-deck rectangular structure, and internal layer is identical wood plank, and skin is aluminium-foil paper heat-preservation cotton; Left and right, rear three central points of described blank microcapsules measuring box all have one for installing the aperture of thermopair.
In said apparatus, left and right, rear three faces of perforate are provided with the groove of a transverse direction, and glass plate is inserted in blank microcapsules measuring box by groove.
In said apparatus, the material of described glass plate is common white glass; Insert the glass plate of blank microcapsules measuring box not containing energy storage phase-change microcapsule.
In said apparatus, measuring box seals with silicon rubber after inserting by glass plate, to prevent hot-air in measuring box from leaking, affects measuring accuracy.
Compared with prior art, advantage of the present invention
(1) utilize two identical measuring boxes, be placed in equably immediately below same thermal source, essentially eliminate the external factor such as environmental turbulence, thermal source variation, measuring box variation itself, on the impact of measurement result.Utilize except glass surface is coated with material difference during measurement, other all identical accumulation energy microcapsule measuring boxes and blank microcapsules measuring box are measured simultaneously, and eliminating environmental change to greatest extent affects measurement result.
(2) utilize the thermopair that the metals such as 0.2-0.4mm copper are made, decrease the caloric receptivity of sensor itself, improve the sensitivity of measurement, and utilize multichannel to measure simultaneously, decrease measurement system error.
(3) measuring box device utilizes groove design, close structure, and install easily simple, good seal performance, improves measuring accuracy.
(4) apparatus of the present invention process measured temperature immediately, greatly facilitate the user of measurement mechanism.
(5) because measuring box adopts double-decker, thus decrease the heat transmission between measuring box itself and environment to greatest extent, improve the accuracy of measurement.
(6) owing to introducing USB RS 232 converter, greatly facilitate the connection of measuring system and computer, can use with on the computer of USB interface easily.
(7) because measuring box volume is relatively little, measuring box can be put under carrying out the state of cooling in refrigerator, the measurement of the energy-efficient performance of energy storage phase-change microcapsule.
(8) because whole measuring system is relatively little, be no matter that consumption or the consumption of electric power of phase-change microcapsule is all relatively less in measuring process.
(9) can repeatedly duplicate measurements, in order to observe the thermal stability of energy storage phase-change microcapsule.
(10) a whole set of measuring system is simple and practical, and cost performance is high.
Accompanying drawing explanation
Fig. 1 is energy storage phase-change microcapsule energy-efficient performance measurement mechanism structural representation of the present invention;
Fig. 2 is the front sectional drawing of accumulation energy microcapsule measuring box or blank microcapsules measuring box;
Fig. 3 be accumulation energy microcapsule measuring box or blank microcapsules measuring box overlook sectional drawing;
Fig. 4 is the front 1-7 road temperature survey figure of heating;
Fig. 5 is fractional energy savings figure before heating;
Fig. 6 is the temperature variations figure on the 2nd tunnel after heating;
Fig. 7 is the temperature variations figure on the 3rd tunnel after heating;
Fig. 8 is the temperature variations figure on the 4th tunnel after heating;
Fig. 9 is the temperature variations figure on the 5th tunnel after heating;
Figure 10 is the temperature variations figure on the 6th tunnel after heating;
Figure 11 is the temperature variations figure on the 7th tunnel after heating;
Figure 12 is for calculating fractional energy savings variation diagram in time after heating.
Wherein, heat lamp 1, accumulation energy microcapsule measuring box 2, thermopair 3, electric thermo-couple temperature measurement module 4, first data connecting line 5, RS232 and RS485 signal conversion module 6, second data connecting line 7, USB RS 232 converter 8, the connecting line 9 between USB RS 232 converter and computer, computer 10, thermocouple wire 11, blank microcapsules measuring box 12.
Embodiment:
Do specifically to describe in detail further to the present invention below in conjunction with specific embodiment, but embodiments of the present invention are not limited thereto, for the technological parameter do not indicated especially, can refer to routine techniques and carry out.
The annexation of apparatus of the present invention is: as Figure 1-3, and described device comprises heat lamp 1, accumulation energy microcapsule measuring box 2, thermopair 3, electric thermo-couple temperature measurement module 4, first data connecting line 5, RS232 and RS485 signal conversion module 6, second data connecting line 7, USB RS 232 converter 8, connecting line 9, computer 10, compensation lead of thermocouple 11 and blank microcapsules measuring box 12 between USB RS 232 converter and computer; Be respectively arranged with more than one pair of thermopair 3 in described accumulation energy microcapsule measuring box 2 and blank microcapsules measuring box 12, described thermopair 3 is connected with electric thermo-couple temperature measurement module 4 by compensation lead of thermocouple 11; Described electric thermo-couple temperature measurement module 4 is connected with RS232 and RS485 signal conversion module 6 by the first data connecting line 5, described RS232 and RS485 signal conversion module 6 is connected with USB RS 232 converter 8 by the second data connecting line 7, and described USB RS 232 converter 8 is connected with the USB interface of computer 10; Described heat lamp 1 is just to accumulation energy microcapsule measuring box 2 and blank microcapsules measuring box 12.Described accumulation energy microcapsule measuring box 2 is made up of wood plank 16, aluminium-foil paper heat-preservation cotton 14, groove 19 and glass plate 15; Described accumulation energy microcapsule measuring box 2 is double-deck rectangular structure, and internal layer is identical wood plank 16, and skin is aluminium-foil paper heat-preservation cotton 14; Left and right, rear three central points of described accumulation energy microcapsule measuring box 2 all have one for installing the aperture 13,17,18 of thermopair.Left and right, rear three faces of perforate are provided with the groove 19 of a transverse direction, and glass plate 15 is inserted in accumulation energy microcapsule measuring box 2 by groove 19.The material of described glass plate is common white glass; The glass plate inserted in accumulation energy microcapsule measuring box 2 contains energy storage phase-change microcapsule.Described blank microcapsules measuring box 12 is made up of wood plank 16, aluminium-foil paper heat-preservation cotton 14, groove 19 and glass plate 16; Described blank microcapsules measuring box 12 is double-deck rectangular structure, and internal layer is identical wood plank 16, and skin is aluminium-foil paper heat-preservation cotton 14; Left and right, rear three central points of described blank microcapsules measuring box 12 all have one for installing the aperture 13,17,18 of thermopair.Left and right, rear three faces of perforate are provided with the groove 19 of a transverse direction, and glass plate 15 is inserted in blank microcapsules measuring box 12 by groove 19.The material of described glass plate is common white glass; Insert the glass plate of blank microcapsules measuring box 12 not containing energy storage phase-change microcapsule.Measuring box seals with silicon rubber after inserting by glass plate, to prevent hot-air in measuring box from leaking, affects measuring accuracy.
In the present invention, temperature signal is transformed into digital signal by electric thermo-couple temperature measurement module 4; First data connecting line 5 is for the data cube computation between electric thermo-couple temperature measurement module 4 and RS232 and RS485 signal conversion module 6; RS232 and RS485 signal conversion module 6 for RS485 signal being converted to RS232 signal, the second data connecting line 7 is used between RS232 and RS485 signal conversion module 6 and USB RS 232 converter 8 data cube computation; USB RS 232 converter 8 is for being directly connected the USB interface of RS232 signal by computer with computer; Computer 10 for send start measuring-signal and receive by change digital signal and show each road electric thermo-couple temperature and self-defined fractional energy savings by display screen.
Accumulation energy microcapsule measuring box 2 and blank microcapsules measuring box 12 internal layer adopt same material (to be generally similar wood plank, thickness is 3-8mm), conventional method is utilized to manufacture two rectangular parallelepiped internal layers, rectangular parallelepiped interior size is 200mm × 80mm × 100mm, wherein the top layer of rectangular parallelepiped is empty, the left side, the right side of rectangular parallelepiped, respectively bores an aperture for installing thermopair below.Rectangular parallelepiped skin aluminium-foil paper heat-preservation cotton 14 is wrapped up, the correspondence position installing thermopair opens aperture, No. six thermopairs through demarcating are arranged in two measuring boxes respectively, note thermopair position completely the same in two measuring boxes, and shut with the aperture of silicon rubber by six installation thermopairs.Cut system two block size and to measure and top layer matches clear glass, its thickness is 2-5mm, and coat the coating containing phase-change microcapsule respectively in the one side of two blocks of glass and (namely only have the outer nexine of microcapsules there is no the blank capsules of phase-change material containing blank sample, also directly can be coated with and coat, add thing without any other) coating, face up scribble coating one, utilize a left side for two measuring boxes, right, the groove at rear three tops, the glass two pieces being scribbled different material inserts a left side for two measuring boxes, right, in the groove at rear three tops, silicon rubber is utilized thoroughly to be shut at all the other measuring box edges.After about 1-2 days, after all silicone rubber for sealing solidifications, check pore-free, the test of microcapsules of storing energy through phase change energy-efficient performance can be carried out.During test, two measuring boxes are placed in 20-40cm immediately below heat lamp, start the Survey Software of independent development, now can observe that the temperature of No. six thermopairs is almost completely the same, show that system measurement data is normal, stop measuring.Open heat lamp, again start measurement, just can find that the electric thermo-couple temperature change scribbled in the measuring box of microcapsules is slow, and the electric thermo-couple temperature change be not coated with in the measuring box of microcapsules is relatively very fast, according to the change of temperature, in conjunction with self-defining fractional energy savings computing formula, just can measure the instant fractional energy savings of energy storage phase-change microcapsule, be determined energy-efficient performance and the thermal stability of energy storage phase-change microcapsule by the change of temperature.
Embodiment 1
First be that 0.2-0.4mm copper and constantan line are some at electronic apparatus market purchasing heat lamp 1, electric thermo-couple temperature measurement module 4, RS232 and RS485 signal conversion module 6, USB RS 232 converter 8, diameter.
The conventional method preparing thermopair is utilized to prepare 10 to the thermopair 3 being about 1 meter.
Electric thermo-couple temperature measurement module 4 supplier provide.
Random choose seven in ten pairs of thermopairs of preparation (is respectively a Lu-g road to being connected on the 0-6 port of electric thermo-couple temperature measurement module 4,0 port numbers corresponding a road thermopair, by that analogy), utilize the method that conventional thermocouples is demarcated, seven pairs of thermopairs are demarcated, the temperature data t that contrast independent development process of measurement records
0with the actual temperature data t recorded with microthermometer
r, utilize the matching of linear fit instrument to obtain following equation:
t
R＝a
0+a
1t
0(1)
Notice that the fitting parameter of seven pairs of thermopairs may have difference, but be generally more or less the same.For fitting parameter a
0, a
1depart from the thermopair (as departing from more than 3%) that seven pairs of thermopair mean value is larger, need to change this to thermopair, with any pair replacement in remaining 3 pairs of thermopairs, and re-start demarcation, till eligible.
According to said apparatus method of attachment.
Select the wood plank of uniform in material, thickness is 5mm, utilizes conventional method to manufacture two rectangular parallelepiped internal layers, see Fig. 2-3, rectangular parallelepiped interior size is 200mm × 80mm × 100mm, and wherein the top layer of rectangular parallelepiped is empty, the left side, the right side of rectangular parallelepiped, respectively bores an aperture for installing thermopair below.Rectangular parallelepiped skin aluminium-foil paper heat-preservation cotton parcel, the correspondence position installing thermopair opens aperture, No. seven thermopairs through demarcating are labeled as a, b, c, d, e, f, g, wherein b, c, d road is arranged in accumulation energy microcapsule measuring box 2, e, f, g road is arranged on blank microcapsules measuring box 12, a road (the 1st tunnel) thermopair and is used for measures ambient temperature (should be noted when opening infrared lamp and avoid heating a road thermopair).Note b, c, d road thermopair and e, f, g road thermopair position completely the same in two measuring boxes, and shut with the aperture of silicon rubber by six installation thermopairs.Cut system two block size and to measure and top layer matches clear glass, its thickness is 3mm, and coat the coating containing phase-change microcapsule respectively in the one side of two blocks of glass and (namely only have the outer nexine of microcapsules there is no the blank capsules of phase-change material containing blank sample, also directly can be coated with and coat, add thing without any other) coating, face up scribble coating one, utilize a left side for two measuring boxes, right, the groove at rear three tops, the glass two pieces being scribbled different material inserts a left side for two measuring boxes, right, in the groove at rear three tops, silicon rubber is utilized thoroughly to be shut at all the other measuring box edges.After 48 hours, after all silicone rubber for sealing solidifications, check pore-free, the test of microcapsules of storing energy through phase change energy-efficient performance can be carried out.During test, two measuring boxes are placed in 30cm immediately below heat lamp, now can observe that the temperature of No. seven thermopairs is almost completely the same, see Fig. 4, show that system measurement data is normal, before heating, fractional energy savings figure is shown in Fig. 5, stops measuring.Open heat lamp, again measure, just can find that the electric thermo-couple temperature change scribbled in the measuring box of microcapsules is slow, and the electric thermo-couple temperature change be not coated with in the measuring box of microcapsules is relatively very fast, according to the change of temperature, see Fig. 6-Figure 11, wherein Fig. 6, Fig. 7, Fig. 8 are placed in blank microcapsules measuring box (12) to be labeled as e, f, g road i.e. the 2nd, the 3rd, the 4th road electric thermo-couple temperature change curve, turn on light after heating, temperature rises very fast; Wherein Fig. 9, Figure 10, Figure 11 are placed in energy storage phase-change microcapsule measuring box 2 to be labeled as b, c, d road i.e. the 5th, the 6th, the 7th road electric thermo-couple temperature change curve, and after heating of turning on light, temperature rises slower.
In conjunction with self-defining fractional energy savings computing formula, just can measure the instant fractional energy savings of energy storage phase-change microcapsule, self-defined fractional energy savings computing formula is as follows:
Wherein β is self-defined fractional energy savings, t
irepresenting through demarcating correction Hou i-th road electric thermo-couple temperature, the results are shown in Figure 12, as shown in Figure 12, when after heating of turning on light, due to t
2, t
3, t
4the velocity ratio t that temperature rises
5, t
6, t
7hurry up, the fractional energy savings β calculating gained according to self-defining formula (2) just increases thereupon, and fractional energy savings is larger, shows that energy storage phase-change microcapsule energy-efficient performance is in actual applications better.
The preparation method of the phase-change microcapsule in above-described embodiment is as follows: adopt interfacial polymerization, take carbamide resin as wall material, n-octadecane phase-change material is core, and core wall mass ratio is 1.95:1, OP-10 selected by emulsifying agent, account for 2.04% of emulsion system mass ratio, emulsification is stirred to turn and is spent for 1000r/min, and temperature of reaction is 60 DEG C, course of reaction 25min, insulation 2 hours after reaction, is undertaken reacted emulsion filtering, washs, dry, to obtain final product.
The above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.All any amendments done within the spirit and principles in the present invention, equivalent to replace and improvement etc., within the protection domain that all should be included in the claims in the present invention.
Claims (8)
1. an energy storage phase-change microcapsule energy-efficient performance measurement mechanism, it is characterized in that, described device comprises heat lamp (1), accumulation energy microcapsule measuring box (2), thermopair (3), electric thermo-couple temperature measurement module (4), the first data connecting line, RS232 and RS485 signal conversion module (6), the second data connecting line (7), USB RS 232 converter (8), connecting line (9), computer (10), compensation lead of thermocouple (11) and blank microcapsules measuring box (12) between USB RS 232 converter and computer; Be respectively arranged with more than one pair of thermopair (3) in described accumulation energy microcapsule measuring box (2) and blank microcapsules measuring box (12), described thermopair (3) is connected with electric thermo-couple temperature measurement module (4) by compensation lead of thermocouple (11); Described electric thermo-couple temperature measurement module (4) is connected with RS232 and RS485 signal conversion module (6) by the first data connecting line (5), described RS232 and RS485 signal conversion module (6) is connected with USB RS 232 converter (8) by the second data connecting line (7), and described USB RS 232 converter (8) is connected with the USB interface of computer (10); Described heat lamp (1) is just to accumulation energy microcapsule measuring box (2) and blank microcapsules measuring box (12).
2. energy storage phase-change microcapsule energy-efficient performance measurement mechanism according to claim 1, is characterized in that, described accumulation energy microcapsule measuring box (2) is made up of wood plank, aluminium-foil paper heat-preservation cotton, groove and glass plate; Described accumulation energy microcapsule measuring box (2) is double-deck rectangular structure, and internal layer is identical wood plank, and skin is aluminium-foil paper heat-preservation cotton; Left and right, rear three central points of described accumulation energy microcapsule measuring box (2) all have one for installing the aperture of thermopair.
3. according to the energy storage phase-change microcapsule energy-efficient performance measurement mechanism described in claim 2, it is characterized in that, left and right, rear three faces of perforate are provided with the groove of a transverse direction, and glass plate is inserted in accumulation energy microcapsule measuring box (2) by groove.
4. energy storage phase-change microcapsule energy-efficient performance measurement mechanism according to claim 3, it is characterized in that, the material of described glass plate is common white glass; The glass plate inserted in accumulation energy microcapsule measuring box (2) contains energy storage phase-change microcapsule.
5. energy storage phase-change microcapsule energy-efficient performance measurement mechanism according to claim 1, is characterized in that, described blank microcapsules measuring box (12) is made up of wood plank, aluminium-foil paper heat-preservation cotton, groove and glass plate; Described blank microcapsules measuring box (12) is double-deck rectangular structure, and internal layer is identical wood plank, and skin is aluminium-foil paper heat-preservation cotton; Left and right, rear three central points of described blank microcapsules measuring box (12) all have one for installing the aperture of thermopair.
6. according to the energy storage phase-change microcapsule energy-efficient performance measurement mechanism described in claim 5, it is characterized in that, left and right, rear three faces of perforate are provided with the groove of a transverse direction, and glass plate is inserted in blank microcapsules measuring box (12) by groove.
7. energy storage phase-change microcapsule energy-efficient performance measurement mechanism according to claim 6, it is characterized in that, the material of described glass plate is common white glass; Insert the glass plate of blank microcapsules measuring box (12) not containing energy storage phase-change microcapsule.
8. energy storage phase-change microcapsule energy-efficient performance measurement mechanism according to claim 4, is characterized in that, measuring box seals with silicon rubber after inserting by glass plate.
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| CN108280040A (en) * | 2018-03-09 | 2018-07-13 | 中天宽带技术有限公司 | A kind of T-type data monitoring device dual port data conversion equipment |
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