CN102788814A - Method for measuring thermal response speed in hot-summer and cold-winter areas - Google Patents
Method for measuring thermal response speed in hot-summer and cold-winter areas Download PDFInfo
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- CN102788814A CN102788814A CN2012103009687A CN201210300968A CN102788814A CN 102788814 A CN102788814 A CN 102788814A CN 2012103009687 A CN2012103009687 A CN 2012103009687A CN 201210300968 A CN201210300968 A CN 201210300968A CN 102788814 A CN102788814 A CN 102788814A
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Abstract
The invention discloses a method for measuring thermal response speed in hot-summer and cold-winter areas. A measuring device implementing the method comprises a protection box, measuring boxes, a cold water unit, fan coils, electric heaters and thermal insulation systems. The measuring boxes are disposed in the protection box. The method includes calibration steps: a first operation condition is a natural ventilation condition, surface temperature of the two measuring boxes keeps consistent to indoor air temperature in the natural ventilation state; and a second operation condition is an air-conditioning condition, the outer thermal insulation system and the inner thermal insulation system are mounted on the two measuring boxes used for comparison measurement respectively, an air-conditioning measuring and controlling system is started, temperatures in the measuring boxes and the protection box keep at set temperature, temperature difference of each measuring point is kept within 0.5 DEG C, inner surface wind speed of the measuring boxes is controlled to be smaller than 0.3 m/s, and response speeds of the inner surface temperatures of the inner thermal insulation system and the outer thermal insulation system of the two measuring boxes and air temperatures in the measuring boxes to the set temperature are compared.
Description
Technical field
The present invention relates to the building energy conservation technical field of measurement and test, particularly a kind of Xia Redong cryogenic region thermal response velocity test method.
Background technology
The large percentage that load of wall body accounts in the Xia Redong cryogenic region building air conditioning load reduces the key that load of wall body becomes building energy conservation.Construction wall heat preserving mode commonly used at present has multiple modes such as outer insulation, middle insulation, interior insulation and self-heat conserving.Under unsteady state condition; Because the difference of different heat preserving modes on the hot rerum natura of indoor material; The hot dynamic perfromance of building enclosure is changed; Indoor temperature-responsive is very different during will causing air-conditioning, and for adopting air conditioning mode building at intermittence, it is extremely important that the selection of heat preserving mode just seems.
In addition, the method for operation of building air conditioning equipment also has very big influence for thermal response speed.Mostly Xia Redong cryogenic region building air conditioning equipment is distributing or partly centralized, adopts the in the majority of batch (-type) operation of air conditioner pattern.
Exploration suits in the important meaning of this regional reasonable building heat preserving mode tool; But the described thermal response velocity test method that does not also have a kind of maturation in the prior art; Can experimentize comparative analysis intermittently under the air conditioning mode; Under the situation of other term harmonization, the difference of outer insulation and heat preservation system inside internal surface temperature and indoor air temperature response design temperature speed.
Summary of the invention
The purpose of this invention is to provide a kind of Xia Redong cryogenic region thermal response velocity test method, in order to the test problem of the thermal response speed that solves building heat insulation system.
Technical scheme of the present invention is; A kind of Xia Redong cryogenic region thermal response velocity test method; Be used to test Xia Redong cryogenic region building heat insulation system and be issued to the response speed of the reaction time of design temperature in the air-conditioning effect with different heat-insulation system internal surface temperatures of comparative analysis and indoor air temperature; This method of testing is based on a kind of proving installation of special use, this proving installation be placed on one can the rotating disk of 360 degree rotations on, said proving installation includes protection cabinet, test casing, handpiece Water Chilling Units, computer platform, switch board, fan coil, electric heater and heat-insulation system; Said heat-insulation system is installed on the daylighting face of said test casing; Said test casing is placed in the described protection cabinet, and described fan coil and electric heater are used to regulate the temperature in the test casing, comprise 2 test casings in the described protection cabinet; Described method of testing comprises demarcating steps
Described demarcating steps is demarcated described test casing according to 2 kinds of operating modes,
The 1st kind of operating mode is the natural ventilation operating mode, promptly closes air-conditioning system, and 2 test casings internal surface temperature and indoor air temperature under the natural ventilation state are consistent,
The 2nd kind of operating mode is air conditioning condition; 2 test casings of contrast test are installed outer heat preservation system and heat preservation system inside respectively; Start the air-conditioning TT&C system, guarantee to test the interior temperature of casing and protection cabinet and remain on design temperature, each measurement point temperature difference is in 0.5 ℃; The interior of control test simultaneously wind speed is less than 0.3m/s
Described method of testing also comprises testing procedure, relatively the internal surface temperature of the heat preservation system inside outer heat preservation system of 2 test casings and the response speed of the interior air themperature of test casing to design temperature.
The present invention is based on specific proving installation a kind of method of testing of thermal response speed of Xia Redong cryogenic region building heat insulation system of maturation is provided.
Description of drawings
Fig. 1 is a proving installation structure vertical view in the embodiment of the invention.
Fig. 2 is a proving installation structure vertical view in the embodiment of the invention.
Fig. 3 is that the air-conditioning of proving installation in the embodiment of the invention is formed synoptic diagram.
Wherein, 1---handpiece Water Chilling Units, 2---computer platform, 3---switch board, 4---fan coil, 5---electric heater, 6---the test casing, 7---protection cabinet, 8---windowpane, 9---moving horizontally door, 10---airduct.
Fig. 4 is the thermal response velometer of the heating condition of utilization method of testing of the present invention.
Fig. 5 is the thermal response velometer of the cooling condition of utilization method of testing of the present invention.
Fig. 6 is the thermal response velometer of the back of the refrigeration earlier heating cycle of utilization method of testing of the present invention.
Embodiment
As illustrated in fig. 1 and 2, device of the present invention can be positioned at the roof of buildings, does not have buildings to block sunshine near this building, can both shine test board from being raised to the sunset sunshine day.Whole test board is positioned on the rotating disk, and rotating disk can 360 ° of rotations by driven by motor, and in the test process, test board can be followed the tracks of the sun makes test specimen all the time over against the sun.Test board is made up of two test casings, protection cabinet, the cold water unit of a typhoon, measurement and an opertaing device and other utility appliance.Test board System planes figure and realistic picture are as follows; Wherein among the System planes figure 1 be handpiece Water Chilling Units, 2 for computer console, 3 for switch board, 4 for fan coil, 5 for electric heater, 6 for test casing, 7 for a kind of for heat-insulation system of protection cabinet, 8, can be windowpane.
Protection cabinet mainly is used for test casing and environment are isolated, thereby reduces the heat transfer of test casing and environment.Tank material is selected heat-insulating property polyurethane preferably for use.Testing the hole that casing antetheca and end face leave two 1.5m * 1.5m respectively, be used for vertical plane heat-insulation system and roof heat insulation system testing.Test period, protection cabinet and test box temperature remain on design temperature jointly, can be known to remove by heat transfer theory the heat-insulation system one side is installed, and all the other each faces of test casing are very little with extraneous heat transfer capacity.
Two test casing length sizes are 2m.Their tank material and thickness are identical with protection cabinet.Antetheca and end face also leave two holes the same with protection cabinet.Be separately installed with a typhoon coiler unit and an electric heater in each test casing, fan coil units is used for taking away the heat in the room, and electric heater is used for the heat in the balance room.In order to make measurement result more accurate, post two heat flow meters at each wall of test casing and measure trace heat transfer simultaneously through wall.
The wind-cooled cold-water unit is positioned at a jiao of test board, and the unit refrigerating capacity is 20kW.As shown in Figure 3; Move under the different weather condition for satisfying test, the wind-cooled cold-water unit is selected the compressor of two parallel connections for use, only needs operation one compressor generally speaking; To get heat more and when temperature can not be controlled at setting value in the casing, two compressors moved simultaneously when solar radiation.The wind-cooled cold-water unit is equally applicable to the operation of test in winter, only needs operation fan coil units and electric heater earlier, and the circulating water temperature of handpiece Water Chilling Units is brought up to more than 8 ℃, and unit just can move automatically.Because test is carried out in the process, return water temperature remains unchanged basically, so unit can not shut down because of low-temperature protection.
Test board is mainly measured metered quantity and precision thereof like table 1, shown in 2.
Main measurement instrument of table 1 test board and quantity thereof
| RTD | Thermopair | Electromagnetic flowmeter | Heat flow meter | Actinometer | The three phase electrical parameters general measuring instrument | Power transducer | |
| Protection cabinet | 1 | 3 | 0 | 0 | 0 | 0 | 0 |
| Test casing 1 | 3 | 9 | 1 | 12 | 3 | 1 | 1 |
| |
3 | 9 | 1 | 12 | 3 | 1 | 1 |
Table 2 test board is mainly measured accuracy of instrument
| RTD | Thermopair | Electromagnetic flowmeter | Heat flow meter | Actinometer | The three phase electrical parameters general measuring instrument | Power transducer | |
| Measuring error | 0.1℃ | 0.1℃ | 0.5% | 5% | 1% | 1% | 0.5% |
The precision of three phase electrical parameters general measuring instrument is meant the error when electric flux is accumulated to 1kWh.
Wherein all place a RTD in protection cabinet and each test casing and be used for the measure case temperature; Then temperature signal is passed to controller; Controller is controlled the solid-state relay break-make through comparing and measuring temperature value and set temperature value, thereby control electric heater start-stop reaches the purpose of stablizing room temperature.Two other RTD is used to measure the import and export water temperature of fan coil in each test casing.On test casing fan coil inlet ductwork, electromagnetic flowmeter survey discharge is installed simultaneously.Choose 9 different test points at each test box house and place thermopair, be used for guaranteeing that in the process of carrying out of test the box house temperature is even.Since relatively low to the requirement of protection cabinet temperature homogeneity, guarantee that temperature is even in the protection cabinet so only place 3 thermopairs.For improving the precision of test, each test cabinet wall posts the trace heat transfer that 12 heat flow meters are used to measure test casing and protection cabinet and environment altogether.Three phase electrical parameters general measuring instrument and power transducer are measured the power of power consumption of electrical heating accumulative total and blower fan respectively.In addition, outdoor a whole set of Portable Automatic Weather Station of also placing is used to measure outdoor temperature humidity, wind speed, wind direction, surface level intensity of solar radiation, surface level sun scattered radiation intensity.Can calculate vertical plane sun scattered radiation intensity through surface level sun scattered radiation strength test data.
Experimental testing station is based on the response speed that test arrives different heat-insulation system internal surface temperatures of design temperature time comparative analysis and indoor air temperature.For each test casing, under airtight situation, the design temperature in the casing can be guaranteed to be achieved by following thermal balance equation:
Q
s＝Q
fc-Q
f-Q
e-Q
wall-Q
window-Q
l （1）
In the formula, Q
FcBe fan coil heat exchange quantity, W; Q
fBe power of fan, W; Q
eBe electrical heating amount, W; Q
WallBe wall heat transfer amount, W; Q
WindowFor the test casing passes through the heat transfer capacity of windowpane to environment, W; Q
lBe each wall leaking heat, W.
Q
fc＝cρL(t
o-t
i) （2）
C is a specific heat of water in the formula, J/ (kgK); ρ is the density of water, kg/m
3L is the flow of water, m
3/ s; (t
o-t
i) be the fan coil Inlet and outlet water temperature difference, K.
Q in the formula
iBe heat flow density, W/m
2A
iBe single wall area, m
2
Q
bw＝UF(t
e-t
r) （4）
U is the heat transfer coefficient of heat-insulation system in the formula, W/ (m
2K); F is the hole area, m
2(t
e-t
r) be the test box internal-external temperature difference, K.
The basic skills of test is a method of comparative analysis: earlier the test casing was demarcated by two kinds of operating modes before on-test; First kind is the natural ventilation operating mode; Promptly close air-conditioning system; The situation of change of two casings temperature and hot-fluid in the state of nature nowel mainly makes before air-conditioning is opened, and internal surface temperature and indoor air temperatures in two casings are consistent.Second kind is air conditioning condition, mainly is that the contrast test case is installed outer heat preservation system and heat preservation system inside respectively.Start TT&C system then, make test carry out guaranteeing to test in the process casing and remain on design temperature with the interior temperature of protection cabinet, the each point thermocouple measurement temperature difference is in 0.5 ℃.Control heat-insulation system inside surface wind speed simultaneously less than 0.3m/s.State compares the response speed of the interior air themperature of two test box heat preservation system inside internal surface temperatures and case to design temperature down at the scene.
Two kinds of heat-preserving wall modes are adopted in experiment, are respectively interior insulation: adobe brick+30mmEPS; Outer insulation: 30mmEPS+ adobe brick.In the experimentation, opened refrigeration mode when daytime, outdoor temperature was higher, indoor temperature is set 22 ℃, and open heating mode when outdoor temperature is low night, and indoor temperature is set at 30 ℃.Required test parameter is the embedded heat-preserving wall surfaces externally and internally temperature of each casing in the two experiment casings in the experiment, air themperature and outside air temperature in the two tanks.Experiment purpose is for two kinds of heat-preserving walls of comparison, and heat-preserving wall internal surface temperature and indoor air temperature are to the response of design temperature when test refrigeration, heating mode.Test result is following.
Shown in Figure 4 is heating condition: design temperature is 30 ℃ in the casing, 19.8 ℃ of outdoor air medial temperatures.Heat time heating time 17:30-8:00.Can find out from the heat-preserving wall internal surface temperature, initial heat-up stage, interior insulation internal surface temperature heating rate is obviously greater than the external heat insulating wall internal surface temperature, and after nearly 90 minutes, interior insulation internal surface temperature is stable.Reach consistent through outer insulation after nearly 12 hours fluctuation with interior insulation internal surface temperature temperature.
Shown in Figure 5 is cooling condition: 10:30-16:30 is a refrigeration mode, and indoor temperature is set at 22 ℃, and the outdoor air medial temperature is 29 ℃.Before the refrigeration, the two tanks temperature is along with the temperature of air heats up and raises, and during the refrigeration beginning, inside heat insulation wall body internal surface temperature rate of temperature fall is obviously greater than external heat insulating wall internal surface temperature speed, and through nearly 6 hours, it is consistent that both temperature reach.
Shown in Figure 6 is that refrigeration back heating cycle: 13:40-17:00 is a refrigeration mode earlier, and air-conditioner temperature is set at 22 ℃, and the outdoor air medial temperature is 27 ℃; 17:00 is later on a heating mode, and air-conditioner temperature is set at 30 ℃, and the outdoor air medial temperature is 18 ℃.Two kinds of patterns of refrigeration heating cycle are successively opened, and experimental result shows that inside heat insulation wall body internal surface temperature heating rate is all obviously greater than the external heat insulating wall internal surface temperature under two kinds of patterns.
Claims (1)
1. Yi Zhong Xia Redong cryogenic region thermal response velocity test method; Be used to test Xia Redong cryogenic region building heat insulation system and be issued to the response speed of the reaction time of design temperature in the air-conditioning effect with different heat-insulation system internal surface temperatures of comparative analysis and indoor air temperature; This method of testing is based on a kind of proving installation of special use; This proving installation is placed on one can 360 on the rotating disk of degree rotation, and said proving installation includes protection cabinet, test casing, handpiece Water Chilling Units, computer platform, switch board, fan coil, electric heater and heat-insulation system, and said heat-insulation system is installed on the daylighting face of said test casing; Said test casing is placed in the described protection cabinet; Described fan coil and electric heater are used to regulate the temperature in the test casing, it is characterized in that, comprise 2 test casings in the described protection cabinet; Described method of testing comprises demarcating steps
Described demarcating steps is demarcated described test casing according to 2 kinds of operating modes,
The 1st kind of operating mode is the natural ventilation operating mode, promptly closes air-conditioning system, and 2 test casings internal surface temperature and indoor air temperature under the natural ventilation state are consistent,
The 2nd kind of operating mode is air conditioning condition; 2 test casings of contrast test are installed outer heat preservation system and heat preservation system inside respectively; Start the air-conditioning TT&C system, guarantee to test the interior temperature of casing and protection cabinet and remain on design temperature, each measurement point temperature difference is in 0.5 ℃; The interior of control test simultaneously wind speed is less than 0.3m/s
Described method of testing also comprises testing procedure, relatively the internal surface temperature of the heat preservation system inside outer heat preservation system of 2 test casings and the response speed of the interior air themperature of test casing to design temperature.
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| CN201210300968.7A CN102788814B (en) | 2012-08-22 | 2012-08-22 | Method for measuring thermal response speed in hot-summer and cold-winter areas |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634814A (en) * | 2015-02-09 | 2015-05-20 | 东北石油大学 | Indoor heat environment experiment device with phase-change material curtain wall on one side and application method of indoor heat environment experiment device |
| CN108152327A (en) * | 2018-01-09 | 2018-06-12 | 应芝娣 | A kind of control method of external window of building thermal insulation performance detection device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101598689A (en) * | 2008-06-03 | 2009-12-09 | 上海莘阳建筑节能科技开发有限公司 | The thermal response testing tool of ground heat exchanger heat-transfer performance is buried in rapid reaction |
| CN102012699A (en) * | 2010-11-05 | 2011-04-13 | 东南大学 | Thermal response remote test device of low-grade heat source of earth source heat pump |
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2012
- 2012-08-22 CN CN201210300968.7A patent/CN102788814B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101598689A (en) * | 2008-06-03 | 2009-12-09 | 上海莘阳建筑节能科技开发有限公司 | The thermal response testing tool of ground heat exchanger heat-transfer performance is buried in rapid reaction |
| CN102012699A (en) * | 2010-11-05 | 2011-04-13 | 东南大学 | Thermal response remote test device of low-grade heat source of earth source heat pump |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634814A (en) * | 2015-02-09 | 2015-05-20 | 东北石油大学 | Indoor heat environment experiment device with phase-change material curtain wall on one side and application method of indoor heat environment experiment device |
| CN104634814B (en) * | 2015-02-09 | 2017-03-01 | 东北石油大学 | Side carries indoor thermal environment experimental provision and the using method of phase-change material curtain wall |
| CN108152327A (en) * | 2018-01-09 | 2018-06-12 | 应芝娣 | A kind of control method of external window of building thermal insulation performance detection device |
| CN108152327B (en) * | 2018-01-09 | 2018-12-28 | 应芝娣 | A kind of control method of external window of building thermal insulation performance detection device |
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Granted publication date: 20140924 |