CN105928976B - The incorgruous experimental provision for storing heat release Evolution of Study of The Underground space soil body transverse and longitudinal - Google Patents
The incorgruous experimental provision for storing heat release Evolution of Study of The Underground space soil body transverse and longitudinal Download PDFInfo
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- CN105928976B CN105928976B CN201610387991.2A CN201610387991A CN105928976B CN 105928976 B CN105928976 B CN 105928976B CN 201610387991 A CN201610387991 A CN 201610387991A CN 105928976 B CN105928976 B CN 105928976B
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The present invention relates to a kind of incorgruous experimental provision for storing heat release Evolution of Study of The Underground space soil body transverse and longitudinal, including Outdoor Air Parameters simulator, indoor environment parameter simulation device, the incorgruous heat and mass coupling experiment block of transverse and longitudinal, experimental bench rack, outdoor ringBorder parameter simulation device is made of air thermal environment simulation air hose and spray equipment, and indoor environment parameter simulation device is made of water bath with thermostatic control plate, bath temperature measuring point, water-bath speed measuring point, water pump；The incorgruous heat and mass coupling experiment block of transverse and longitudinal is made of the heat transfer soil body, soil temperature measuring point, soil body relative humidity measuring point, heat flow density measuring point；Heat transfer soil body supporting rack has 5% gradient, and removable integrated support frame lower part sets that there are four land wheels.The device can easily change the flow velocity of water bath with thermostatic control and temperature and outdoor environment cyclically-varying, so that experiment block Soil Parameters change, by dynamic analysis, the long-term heat charge and discharge of the side soil body in underground space building enclosure indoors under outer periodic humiture boundary condition is provided.
Description
Technical field
The present invention relates to a kind of experimental provisions of underground space building thermal environment research, and in particular to a kind of underground space is enclosed
The experiment dress of the side soil body long-term heat charge and discharge research under outer periodic humiture boundary condition indoors in protection structure
It puts.
Background technology
Nowadays, important component of the underground space as modern city, construction area constantly increase, and building function is not
It is disconnected to increase, in the thermal environment of the hypogees such as bookstore, food and drink, subway, all there are problems that the building enclosure side soil body stores heat release.It is known
It has indoor thermal environment following influence：First, having Balanceregulation to Temperature and Relative Humidity of Indoor Air, this effect both influenced
Indoor cooling and heating load and air-conditioning cycle length, and affect the ventilation in non-air-conditioning period and the formation of indoor temperature field；Second is that
The soil body, which stores the more stable wall temperature of the lower periodical fuctuation within a narrow range of law of heat release effect, can form stable radiation heat transfer, and then influence
Human thermal comfort then from comfortable energy-efficient angle, needs the Study of The Underground space building enclosure soil body to store heat release spy for a long time
Property.The present invention be directed to the underground space side soil bodys to store the experimental provision that heat release Evolution studied, the rule shadow for a long time
The thermal comfort of underground space building operation energy consumption and human body is rung.And the correlative study of this respect is rarely reported, and is that this is right
Storage heat release research in the transverse and longitudinal direction of the soil body is particularly important.
Research currently for soil caloic transfer law has very much, on the one hand about subway tunnel country rock soil body accumulation of heat,
Nanjing University Li Xiaozhao is taught and Tongji University has studied subway from the angle of civil engineering and water seepage flow respectively in even wide scholar
Tunnel surrounding heat output and Temperature Distribution；On the other hand for underground space country rock heat-moisture transfer and carry calculation, University Of Chongqing
Fu Xiangzhao is taught and Xi'an University of Architecture and Technology professor Li Angui pays close attention to always for many years using underground power station as the porous of representative
Medium wall is transmitted with room air dynamic heat and moisture to be optimized with air current composition；Professors, the big scholar of period-luminosity and the Zhu such as Yao Yang, Jiang Yi be strong
Professor Baconic to the underground space can and outdoor temperature mechanical periodicity boundary condition under carry calculation carried out it is two-dimentional modeling with
Software programming.Above-mentioned scholar is studied from different perspectives for the temperature field of the underground space soil body and carry calculation, for ground
The development of down space is made that outstanding contribution, but the boundary condition of outside research consideration underground space room or indoor side mostly,
Do not consider that outdoor boundary condition humidity changes yet, that is, only taken into account one-dimensional variation and ignored the wet coupling of heat of two-dimensional directional
It closes.Exothermic cyclically-varying rule is stored for the underground space side soil body also not refer to.And the experimental provision not only allows for
The humidity of the practical underground space influences, and is also added into the heat and mass coupling of two-dimensional directional, farthest reduces the underground space
Truth, adequately Study of The Underground space operating mode provide it is good experiment ensure.Therefore knot is gone along with sb. to guard him in Study of The Underground space
Two-dimentional transverse and longitudinal couples the long-term heat charge and discharge to be formed tool to the side soil body under outer periodic humiture boundary condition indoors in structure
There is certain research significance.
Invention content
The present invention is to provide for a kind of incorgruous experimental provision for storing heat release Evolution of Study of The Underground space soil body transverse and longitudinal, should
Experimental provision overcomes in the storage heat release Evolution research of underground space soil and is difficult to measure soil hot-wet variation in the case of actual measurement
The problem of parameter, compensates for the restriction that numerical simulation is limited to physical modeling and boundary condition setting, and present apparatus operating mode is adjusted
Convenient, experimental data can be obtained simply, dramatically reproduce underground space side soil body outer periodic temperature indoors
Transverse and longitudinal is incorgruous under boundary condition stores exothermic Evolution；The storage of underground space building enclosure can be provided by the Evolution
Exothermic character, can be as underground space load and the important foundation of energy consumption research, and it is cold to analyze prediction room conditioning season
Load provides non-air-conditioning season indoor air temperature wave characteristic, and directive significance is provided for the design of underground space air conditioner load.
To achieve the above object, technical scheme is as follows：
The incorgruous experimental provision for storing heat release Evolution of a kind of Study of The Underground space soil body transverse and longitudinal, including Outdoor Air Parameters
The incorgruous heat and mass coupling experiment block of simulator, indoor environment parameter simulation device, transverse and longitudinal, experimental bench rack, the outdoor environment
Parameter simulation device, indoor environment parameter simulation device are placed in above experimental bench rack, Outdoor Air Parameters simulator and room
The incorgruous heat and mass coupling experiment block of transverse and longitudinal is placed between interior environment parameter simulation device；
The Outdoor Air Parameters simulator by thermal environment simulation air hose, spray equipment, temp probe, moisture probe and
Aerial temperature and humidity switch board forms；Constant temperature and humidity air enters from the import of thermal environment simulation air hose side, successively by frequency conversion wind
Machine, heater, humidifier enter soil and outdoor environment hot and humid area region, then drain into perseverance via thermal environment simulation wind tube outlet
Constant temperature and humidity room exhaust outlet；Equipped with spray equipment in the thermal environment simulation air hose, for precipitation outside simulating chamber；
The indoor environment parameter simulation device by water bath with thermostatic control plate, bath temperature measuring point, water-bath speed measuring point, water pump,
Water bath with thermostatic control switch board forms；Water bath with thermostatic control plate, bath temperature measuring point, water-bath speed measuring point are arranged on the incorgruous wet coupling of heat of nearly transverse and longitudinal
The soil body side of experiment block is closed, water bath with thermostatic control switch board carries out water circulation, water bath with thermostatic control switch board by water pump, for return pipe
The probe and water pump of bath temperature measuring point, water-bath speed measuring point are connected, passes through the analysis fluidised form of each measuring point, regulating thermostatic water-bath
Water flow temperature and flow velocity in plate；
The incorgruous heat and mass coupling experiment block of transverse and longitudinal is surveyed by the heat transfer soil body, the soil temperature for being used to study soil thermal storage characteristic
Point, soil body relative humidity measuring point, heat flow density measuring point, Soil Parameters centralized displaying instrument composition；Conduct heat the soil body top surface setting soil body
Temperature point, soil body relative humidity measuring point, heat flow density measuring point, the soil temperature measuring point, soil body relative humidity measuring point, hot-fluid
The probe of density measuring point connects Soil Parameters centralized displaying instrument by conducting wire, and obtaining soil temperature by soil temperature measuring point is distributed
The variation of soil body sensible heat is embodied, soil moisture content variation is obtained by soil body relative humidity measuring point, is obtained by heat flow density measuring point
Latent heat variation in the soil body；And the variation of soil body sensible heat, soil moisture content variation, the common reaction soil body total amount of heat of latent heat variation with
The variation of time, and then obtain the soil body and store law of heat release；
The experimental bench rack is by air hose supporting rack, heat transfer soil body supporting rack, water bath with thermostatic control supporting rack, removable whole branch
Support is formed, and is flowed out for ease of shower water, and heat transfer soil body supporting rack has 5% gradient, moves integrated support frame lower part
If there are four the land wheels of dismountable moving.
Bath temperature measuring point and water-bath speed measuring point in the water bath with thermostatic control plate are >=9, and in a water bath along perseverance
The long wide direction of tepidarium plate is uniformly distributed, and measuring point interval is up to 0.125m；Point layout is in nearly soil body side；The soil body temperature
Measuring point >=50 are spent, are scattered in five rows along depth direction upper tightly lower sparse in the soil body, measuring point is longitudinally spaced to be up to 0.1m；It is horizontal
Nearly close remote dredge in direction is divided into ten rows, and measuring point lateral separation is up to 0.15m；Soil body relative humidity measuring point >=tetra-, the soil body
Relative humidity measuring point is made of the probe of long 25cm intervals 4cm, and appearance is converted by sensing the current signal between two probes
Moisture content is accumulated to reflect soil moisture；Heat flow density measuring point >=7 piece, wherein, soil body top surface is evenly arranged at least 3 pieces, soil
Body side surface is evenly arranged at least 4 pieces.
By outside air temperature and solar radiation quantity synthesis into outdoor air in the Outdoor Air Parameters simulator
Integrated temperature represents；Rainy day operating mode is simulated using spray equipment；By change the outdoor combined air temperature curve of cyclical fluctuations amplitude and
First phase simulates the underground space of different buried depth；Temperature is all disposed at the thermal environment simulation air duct blow, in wind outlet and pipe
Degree is popped one's head in, moisture probe, and temp probe, moisture probe feed back air supply parameter convenient for regulating and controlling for monitoring at air-supply；Wind outlet temperature
Degree probe, moisture probe determine air thermal discharge curve for calculating air-supply enthalpy difference；And temp probe, moisture probe in pipe,
For reflecting the periodical humiture boundary condition curve residing for the experiment soil body；The wherein air effect time is by soil body side FoIt is similar
Criterion numeral determines.
There are three types of residing heat and moisture transfer operating modes for the underground space tool of the simulation different buried depth：1. entire underground space side wall
On soil maximum temperature values point is with a distance from wall surface, the lateral soil body is influenced significantly by outdoor air parameter fluctuation；It is 2. whole
When a side wall is between characteristic thickness and isothermal layer, the lateral soil body is by outdoor air parameter and underground space room air parameter
Joint effect；3. entire side wall is under isothermal layer, the lateral soil body is only influenced by underground space room air parameter.
The indoor environment parameter simulation device replaces the underground space indoor according to dust suppression by spraying using the flowing of water
Air flows；Water bath with thermostatic control plate is affixed on the fluidised form and temperature when soil body side form plan underground space air skims over wall surface, uses wind speed
Size applies different N come forced convertion and the free convection of classifying to forced convertion and free convectionuMake water bath with thermostatic control
Relevant parameter；The water bath with thermostatic control plate is made of several thin-walled water pipes, and by changing thin-walled water pipe pipe bundle combinations form, simulation is not
Same underground space indoor gas flow direction；Different types of underground is simulated by changing the changing rule of bath temperature
Building；The air side of the water bath with thermostatic control plate is added with insulating layer, for ensureing the stability of temperature in water-bath pipe,
In the incorgruous heat and mass coupling experiment block of the transverse and longitudinal underground space side soil body longitudinal direction depth by required research underground
The characteristic thickness in space, isothermal layer depth obtain；Underground space side soil body lateral distance take the influence limit of indoor temperature away from
From for its lateral distance；And according to F under geometric proportionoCriterion numeral makes experimental period；When heat retention effect pair is eliminated in consideration
During the influence of experimental result, the size in soil body transverse and longitudinal direction is expanded to 1.3 times, makes last soil body shape.
Compared with prior art, the method have the advantages that：
(1) present invention has filled up the underground space soil body laterally heat transmission and the sky of the heat-moisture transfer coupling conditions researching of longitudinal direction
In vain.
(2) at present in test method with device come solar simulating radiation when, can not consider night Surface long wave radiation, and spoke
Injection device differs farther out with actual emanations effect, and outdoor combined air temperature is introduced into experimental provision by the present invention, simplifies outdoor
The simulator of solar radiation, the temperature effect of radiation are more direct；
(3) during current experimental provision Study of The Underground space air flow process, its fluidised form and temperature can not preferably be controlled
Degree, and the present invention provides the new paragons of underground space air side flow process simulation, pass through the phase to water using water bath with thermostatic control
Like simulation, the flow velocity and temperature of air can be preferably adjusted；
(4) it is good to have reproduced ground on the basis of the theory of similarity the present invention overcomes the not exploitativeness during actual measurement
Rule is drilled in storage heat release of the down space side soil body indoors under outer periodic temperature boundary condition
(5) the present invention provides a kind of experiment of the long-term heat charge and discharge of the Study of The Underground space side soil body of simplicity dresses
It puts, while the boundary condition effect for embodying humiture coupling stores the soil body Evolution of exothermic effect.
Description of the drawings
Fig. 1 is the overall structure diagram of the experimental provision of the present invention；
Fig. 2 is the spray equipment schematic diagram of the experimental provision of the present invention；
Fig. 3 is point layout front view in the heat transfer soil body；
Fig. 4 is point layout side view in the heat transfer soil body；
Fig. 5 is water bath with thermostatic control plate and point layout front view；
Fig. 6 is water bath with thermostatic control plate and point layout side view.
Specific embodiment
Below in conjunction with attached drawing and case study on implementation, the present invention is described in detail.
As shown in Figures 1 to 6, the incorgruous experimental provision for storing heat release Evolution of a kind of Study of The Underground space soil body transverse and longitudinal,
The experimental bench is mainly made of four parts, respectively：Outdoor Air Parameters simulator A, indoor environment parameter simulation device B,
The incorgruous heat and mass coupling experiment block C of transverse and longitudinal, experimental bench rack D.
Outdoor Air Parameters simulator A air thermal environment simulation air hose and spray equipment as shown in Figure 1, be made of, master
It to be made of thermal environment simulation air hose 1, spray equipment 2, temp probe 3, moisture probe 4 and Temperature and Humidity Control cabinet 5；Wherein hot ring
Border simulation air hose 1 is mainly made of wind turbine 1-1, heater 1-2, humidifier 1-3；
Spray equipment 2 is as shown in Fig. 2, mainly by humidification nozzle 2-1, flowmeter 2-2, pressure gauge 2-3, shut-off valve 2-4, change
Frequency water pump 2-5, sink 2-6, control cabinet 2-7 compositions；Form Outdoor Air Parameters simulator A.
Indoor environment parameter simulation device B is by water bath with thermostatic control plate 11, bath temperature measuring point 12, water-bath speed measuring point 13, water
Pump 14, water bath with thermostatic control switch board 15 form；
Transverse and longitudinal incorgruous heat and mass coupling experiment block C is mainly by being used to study the heat transfer soil body 6, the soil temperature of soil thermal storage characteristic
Measuring point 7, soil body relative humidity measuring point 8, heat flow density measuring point 9, Soil Parameters centralized displaying instrument 10 form；
Experimental bench rack D is mainly by air hose supporting rack 16-1, heat transfer soil body supporting rack 16-2, water bath with thermostatic control supporting rack 16-
3rd, it moves integrated support frame 16 to form, all device features are both placed on integrated support frame 16；For ease of spray water flow
Go out, heat transfer soil body supporting rack 16-2 has 5% gradient, and 16 lower part of removable integrated support frame sets that there are four land wheels and detachable
It is mobile.
Measuring point such as Fig. 3 of arrangement in the soil, shown in 4：Soil temperature measuring point 7 is no less than 50, and soil body study subject is thick
Spend for 0.5m, length 1.5m, either outside air temperature fluctuation or underground space fluctuations in indoor temperature its to the soil body
Influence reduces with the increase of distance, needs to carry out uneven arrangement, is scattered in the soil body along depth direction upper tightly lower sparse
Five rows, measuring point is longitudinally spaced to be up to 0.1m；Nearly close remote dredge of horizontal direction is divided into ten rows, and measuring point lateral separation is up to 0.15m；
Humidity measuring point 8 should be no less than four, be made of the probe of long 25cm intervals 4cm, by sensing the electric current between two probes
Signal is converted into volumetric moisture content to reflect soil moisture, and to eliminate the interference of each probe signal, moisture probe avoids arranging
On same vertical plane；Heat flow density measuring point 9 is no less than 7 pieces, and soil body top surface is evenly arranged no less than 3 pieces, and soil body side is uniform
No less than 4 pieces of arrangement；Each measuring point is wired on Soil Parameters centralized displaying instrument, and soil body temperature is obtained by temperature point 7
Degree distribution embodies the variation of soil body sensible heat, and soil moisture content variation is obtained by soil body humidity measuring point 8, and liquid-gas phase transition amount can be in the soil body
Embody the latent heat variation in its soil body.Sensible heat, latent heat variation have reacted soil body total amount of heat and have changed with time, and then obtain jointly
The soil body stores law of heat release.
Measuring point such as Fig. 5 of the arrangement in water bath with thermostatic control plate, shown in 6：Bath temperature measuring point 12 is no less than 9, long 3cm, perseverance
Tepidarium plate thickness is 0.1m, and length and width are all 0.5m, are uniformly distributed in a water bath along long wide direction, measuring point interval is up to
0.125m；Point layout is surveyed in the nearly soil body.Water-bath speed measuring point 13 is no less than 9, is uniformly distributed in a water bath along long wide direction,
Measuring point interval is up to 0.125m；Point layout is surveyed in the nearly soil body.Water bath with thermostatic control intrinsic parameter is shown on water bath with thermostatic control switch board.
Outside air temperature is integrated into temperature with solar radiation quantity synthesis into outdoor air in Outdoor Air Parameters simulator A
Degree represents；Rainy day operating mode is simulated using spray equipment；By changing the amplitude and first phase of the outdoor combined air temperature curve of cyclical fluctuations, mould
Intend the underground space of different buried depth；Temp probe is all disposed at 1 air-supply of thermal environment simulation air hose, in wind outlet and pipe
3rd, moisture probe 4, temp probe 3, moisture probe 4 are for monitoring feedback air supply parameter convenient for regulation and control at air-supply；Wind outlet temperature
Probe 3, moisture probe 4 determine air thermal discharge curve for calculating air-supply enthalpy difference；And temp probe 3, moisture probe in pipe
4, for reflecting the periodical humiture boundary condition curve residing for the experiment soil body；The wherein air effect time is by soil body side FoPhase
It is determined like criterion numeral.
Outside air temperature is represented with solar radiation quantity synthesis into outdoor air integrated temperature；It is simulated using spray equipment
Rainy day operating mode；By changing the amplitude and first phase of the outdoor combined air temperature curve of cyclical fluctuations, the underground space of different buried depth is simulated；Wind
Humiture measuring point is imported and exported and be all disposed in managing to pipe, and measuring point feeds back air supply parameter convenient for regulating and controlling for monitoring at air-supply；Go out
Measuring point determines air thermal discharge curve for calculating air-supply enthalpy difference at mouthful；And the humiture measuring point in air hose can reflect experiment
Periodical humiture boundary condition curve residing for the soil body；The wherein air effect time is by soil body side FoDust suppression by spraying determines.
There are three types of heat and moisture transfer operating modes residing for underground space height of side wall：1. entire side wall is in characteristic thickness, (soil is most
Big temperature value point is with a distance from wall surface) on, the lateral soil body is influenced significantly by outdoor air parameter fluctuation under normal circumstances；It is 2. whole
When a side wall is between characteristic thickness and isothermal layer, the lateral soil body is by outdoor air parameter and underground space room under normal circumstances
Interior air parameter joint effect；3. entire side wall is under isothermal layer, the lateral soil body is only by underground space room under normal circumstances
Interior air parameter influences.4. entire side wall, using characteristic thickness as line, a part is located on characteristic thickness under earth's surface, at this time side
It is influenced significantly by outdoor air parameter to the soil body；Another part is located under characteristic thickness, on isothermal layer, the lateral soil body at this time
By outdoor air parameter and underground space room air parameter joint effect.There are laminations.5. entire side wall is with isothermal layer
For line, a part is located on isothermal layer under characteristic thickness, and the lateral soil body is by outdoor air parameter and underground space room at this time
Interior air parameter joint effect；Another part is located under isothermal layer, and the lateral soil body is only by underground space room air parameter at this time
It influences.There are laminations.Across characteristic thickness and isothermal layer, 1. 6. operating mode residing for the lateral soil body combines last entire side wall
3. 2. these three situations.There is also laminations.
The indoor air of the underground space is replaced to flow using the flowing of water according to dust suppression by spraying；Water bath with thermostatic control plate is affixed on
Soil body side form intends the fluidised form and temperature when underground space air skims over wall surface, considers forced convertion and nature by wind speed size
The classification of convection current, i.e., underground space wall inside air is flowed for nature when wind speed is small, underground space wall when wind speed is larger
Wall inside air is forced convertion, and different N is applied respectively for two kinds of situationsuMake the relevant parameter of water bath with thermostatic control；For
Ensure water bath with thermostatic control plate and the uniformity of soil body heat exchange, be specifically to be made of countless thin-walled water pipes, by changing tube bank group
Conjunction form can simulate different underground space indoor gas flow directions according to actual conditions；Change the variation rule of bath temperature
Rule can also be used to simulate different types of hypogee；It, need to be in thermostatted water of course for the stability for ensureing temperature in water-bath pipe
It bathes plate air and surveys and add insulating layer.
Underground space side soil body longitudinal direction depth is obtained by the characteristic thickness of research data, isothermal layer depth；The underground space
Side soil body lateral distance considers that indoor temperature influence belongs to the big soil body of semo-infinite, and the influence critical distance for taking indoor temperature is it
Lateral distance；And according to F under particular geometric ratiooCriterion numeral makes experimental period；Considered to eliminate heat retention by experiment experience
The size in soil body transverse and longitudinal direction is expanded to 1.3 times, makes last soil body shape by influence of the effect to experimental result；
Each section of the present invention carries out operating mode adjusting by respective switch board, and soil side data can be in Soil Parameters centralized displaying instrument
It is read on 10, water bath with thermostatic control intrinsic parameter is shown on water bath with thermostatic control switch board 15.
Ajutage of the present invention, the heat transfer soil body, water bath with thermostatic control plate and water-bath are enclosed with the heat preservation of 3cm thickness for return water pipe surface
Material (such as polystyrene foam plastics).
Before research experiment progress, need to carry out experimental provision thermal balance and mass balance experiment, experimental device for verifying
The correctness of basic research performance.
Embodiment 1：Operating mode when near wall wind speed is smaller
In Fig. 1, constant temperature and humidity air is entered by the wind turbine side of thermal environment simulation air hose 1, successively by frequency conversion fan 1-
1st, heater 1-2, humidifier 1-3 go out into soil and outdoor environment hot and humid area region, then via thermal environment simulation air hose 1
Mouth drains into thermostatic constant wet chamber's exhaust outlet；Thermostatic constant wet chamber's air-conditioning box can ensure simultaneously compared with lower air temperatures and air humidity tune
Section, and heater 1-2 can provide higher air themperature, humidifier 1-3 can further adjusting air humidity, frequency conversion fan 1-
1 regulates and controls air velocity；Shut-off valve 2-4 is opened in spray equipment 2, opens variable frequency pump 2-5, humidification nozzle 2-1 starts to simulate
Outdoor precipitation, flowmeter 2-2 and pressure gauge 2-3 control variable frequency pump 2-5 by feedback, adjust its flow；Water pump 14 is opened,
For water bath with thermostatic control plate 11 by carrying out water circulation for return pipe, water bath with thermostatic control switch board 15 analyzes fluidised form by measuring point, adjusts permanent
Water flow temperature and flow velocity in tepidarium plate 11.
Outdoor combined air temperature calculation formula of the present invention is shown in formula 1.Using Shanghai City natatorium subway station station hall layer as prototype, this
In utilize Fourier modulus numberWherein：FO：Fourier modulus number, nondimensional number；a：Thermal diffusivity, unit m2/s；
τ：The time interval played at the time of thermal agitation until institute's timing is carved, unit s takes place in heat conduction from boundary；δ：Sizing ruler
It is very little, unit m.According to 1：20 geometric dimension determines time scale.Underground space prototype is joined with model geometric size and time
Number correspondence is shown in Table 1, and the wherein practical buried depth of natatorium station hall layer is at 5m, and model can only provide 3m buried depths, then in order to simulate reality
Border natatorium subway station station hall layer operating mode, need to be handled it using formula 2.Underground space wall when near wall wind speed is smaller
Inside air is flowed for nature, according to the Nu Xieerte criterion numeral Nu=0.1 (GrPr under long wall temperature vertical wall free convection
)1/3(Gr Grashof numbers, dimensionless number；Pr Prandtl criterion numbers, dimensionless number.) ensureing that flow velocity is constant,
Temperature difference ratio is made according to geometric proportion.Underground space temperature difference conversion specific with water bath with thermostatic control is corresponding to be shown in Table 2.
1 outdoor combined air temperature calculation formula of formula
In formula：tz：Outdoor combined air temperature, unit DEG C；tair：Outside air temperature；a：Building enclosure outer surface is to sun spoke
The absorptivity penetrated；αout：The convection transfer rate of building enclosure outer surface, unit W/ (㎡ DEG C)；I：Solar radiation overall strength,
Unit W/ ㎡；QL：Building enclosure outer surface and the long-wave radiation heat exchange amount of environment, unit W/ ㎡.
Note：The outdoor combined air temperature uses the parameters such as outside air temperature and solar radiation under concrete condition to be calculated.
The expression formula in temperature field under 2 cyclically-varying boundary condition of formula：
In formula：t0It is surface temperature, unit DEG C；AwIt is the amplitude of ground surface temperature wave；T is the period of ground surface temperature wave,
8760h；Z is stratum depth of soil, unit m；α is temperature diffusivity, unit m2；τ is the time, unit s.
Note：In this case, z values are 2m；
1 underground space prototype of table table corresponding with model geometric size
2 underground space of table and the corresponding table of water bath with thermostatic control temperature difference conversion
Under outdoor environment integrated temperature and relative humidity cyclically-varying, with having for temperature in the underground space and flow velocity
Rule changes, and by the comparative analysis of temperature, humidity, heat flow density data in soil, obtains underground space near wall wind speed
Humiture field variation of the lateral soil body on transverse and longitudinal direction when smaller, and then analyze it and store law of heat release.
According to embodiment 1；Operating mode when wall surface wind speed is larger
Following Operating condition adjustment is carried out according to embodiment 1：
Underground space wall inside air is forced flow when near wall wind speed is larger, in the case of ensureing that the temperature difference is constant, root
According to the Nu Xieerte criterion numerals Nu=0.664Re plunderred outside under tablet operating mode1/2·Pr1/3(Re Reynolds criterion numbers, dimensionless number；Pr
Prandtl criterion number, dimensionless number.) and geometric proportion make flow rate, the underground space is corresponding with the conversion of water bath with thermostatic control flow velocity
It is shown in Table 3.
3 underground space of table and the corresponding table of water bath with thermostatic control flow velocity conversion
Note：In addition to above-mentioned adjustment, other principles and implementation process are same as Example 1.
This experimental provision can also adjust the modes such as underground space type, near wall wind speed, outdoor boundary condition and carry out difference
The experimental program of boundary condition show that the soil body stores heat release Evolution at the top of the underground space, and then comprehensively gives under more multi-state
Go out heat charge and discharge of the soil body in the case where vertical direction is acted on indoor outer periodic humiture boundary condition.
Claims (6)
1. a kind of incorgruous experimental provision for storing heat release Evolution of Study of The Underground space soil body transverse and longitudinal, including Outdoor Air Parameters mould
Intend device（A）, indoor environment parameter simulation device（B）, transverse and longitudinal incorgruous heat and mass coupling experiment block（C）, experimental bench rack（D）,
It is characterized in that：The Outdoor Air Parameters simulator（A）, indoor environment parameter simulation device（B）It is placed in experimental bench rack（D）
Above, Outdoor Air Parameters simulator（A）With indoor environment parameter simulation device（B）Between place the incorgruous heat and mass coupling of transverse and longitudinal
Test block（C）；
The Outdoor Air Parameters simulator（A）By thermal environment simulation air hose（1）, spray equipment（2）, temp probe（3）, it is wet
Degree probe（4）And aerial temperature and humidity switch board（5）Composition；Constant temperature and humidity air is from thermal environment simulation air hose（1）Side import into
Enter, successively by frequency conversion fan（1-1）, heater（1-2）, humidifier（1-3）Into soil and outdoor environment hot and humid area area
Domain, then via thermal environment simulation air hose（1）Outlet drains into thermostatic constant wet chamber's exhaust outlet；The thermal environment simulation air hose（1）It is built-in
There is spray equipment（2）, for precipitation outside simulating chamber；
The indoor environment parameter simulation device（B）By water bath with thermostatic control plate（11）, bath temperature measuring point（12）, water-bath speed measuring point
（13）, water pump（14）, water bath with thermostatic control switch board（15）Composition；Water bath with thermostatic control plate（11）, bath temperature measuring point（12）, water-bath speed
Measuring point（13）It is arranged on the incorgruous heat and mass coupling experiment block of nearly transverse and longitudinal（C）Soil body side, water bath with thermostatic control switch board（15）Pass through water
Pump（14）, for return pipe carry out water circulation, water bath with thermostatic control switch board（15）Connect bath temperature measuring point（12）, water-bath speed survey
Point（13）Probe and water pump（14）, by the analysis fluidised form of each measuring point, the interior water flow temperature of regulating thermostatic water-bath plate (11) and
Flow velocity；
The incorgruous heat and mass coupling experiment block of transverse and longitudinal（C）By the heat transfer soil body for being used to study soil thermal storage characteristic（6）, soil temperature
Measuring point（7）, soil body relative humidity measuring point（8）, heat flow density measuring point（9）, Soil Parameters centralized displaying instrument（10）Composition；Heat transfer soil
Body（6）Top surface sets soil temperature measuring point（7）, soil body relative humidity measuring point（8）, heat flow density measuring point（9）, the soil temperature
Measuring point（7）, soil body relative humidity measuring point（8）, heat flow density measuring point（9）Probe pass through conducting wire connect Soil Parameters centralized displaying
Instrument（10）, pass through soil temperature measuring point（7）Soil temperature distribution is obtained to embody the variation of soil body sensible heat, survey by soil body relative humidity
Point（8）Obtain soil moisture content variation, by heat flow density measuring point（9）Obtain the latent heat variation in the soil body；And soil body sensible heat
Variation, soil moisture content variation, the common reaction soil body total amount of heat of latent heat variation change with time, and then obtain the soil body and store heat release
Rule；
The experimental bench rack（D）By air hose supporting rack（16-1）, heat transfer soil body supporting rack（16-2）, water bath with thermostatic control supporting rack
（16-3）, removable integrated support frame（16）It forms, conduct heat soil body supporting rack（16-2）With 5% gradient, move whole
Supporting rack（16）Lower part sets the land wheel there are four dismountable moving.
2. the incorgruous experimental provision for storing heat release Evolution of Study of The Underground space soil body transverse and longitudinal according to claim 1,
It is characterized in that：The water bath with thermostatic control plate（11）In bath temperature measuring point（12）With water-bath speed measuring point（13）It is >=9, and
In a water bath along water bath with thermostatic control plate（11）Long wide direction be uniformly distributed, measuring point interval is up to 0.125m；Point layout is near
Soil body side；The soil temperature measuring point（7）>=50, five rows are scattered in along depth direction upper tightly lower sparse in the soil body, measuring point is indulged
It is up to 0.1m to interval；Nearly close remote dredge of horizontal direction is divided into ten rows, and measuring point lateral separation is up to 0.15m；The soil body phase
To humidity measuring point（8）>=tetra-, soil body relative humidity measuring point（8）It is made of the probe of long 25cm intervals 4cm, by sensing two
Current signal between probe is converted into volumetric moisture content to reflect soil moisture；The heat flow density measuring point（9）>=7 pieces,
In, at least 3 pieces of the uniform cloth in soil body top surface, soil body side is evenly arranged at least 4 pieces.
3. the incorgruous experimental provision for storing heat release Evolution of Study of The Underground space soil body transverse and longitudinal according to claim 1,
It is characterized in that：The Outdoor Air Parameters simulator（A）It is middle by outside air temperature and solar radiation quantity synthesis into outdoor
Air comprehensive temperature represents；Rainy day operating mode is simulated using spray equipment；By changing shaking for the outdoor combined air temperature curve of cyclical fluctuations
Width and first phase simulate the underground space of different buried depth；The thermal environment simulation air hose（1）At air-supply, wind outlet and pipe in all
It is disposed with temp probe（3）, moisture probe（4）, temp probe at air-supply（3）, moisture probe（4）Air-supply ginseng is fed back for monitoring
Number is convenient for regulation and control；Wind outlet temp probe（3）, moisture probe（4）For calculating enthalpy difference of blowing, air thermal discharge curve is determined；
And the temp probe in pipe（3）, moisture probe（4）, for reflecting that the periodical humiture boundary condition residing for the experiment soil body is bent
Line；The wherein air effect time is by soil body sideDust suppression by spraying determines.
4. the incorgruous experimental provision for storing heat release Evolution of Study of The Underground space soil body transverse and longitudinal according to claim 1,
It is characterized in that：The indoor environment parameter simulation device（B）Underground space room is replaced using the flowing of water according to dust suppression by spraying
Interior air flowing；By water bath with thermostatic control plate（11）It is affixed on fluidised form and temperature when soil body side form plan underground space air skims over wall surface
Degree, with wind speed size come forced convertion and the free convection of classifying, and to forced convertion and free convection using differentIt makes
The relevant parameter of water bath with thermostatic control；The water bath with thermostatic control plate（11）It is made of several thin-walled water pipes, is restrained by changing thin-walled water pipe
Combining form simulates different underground space indoor gas flow directions；Mould is used for by the changing rule for changing bath temperature
Intend different types of hypogee；The water bath with thermostatic control plate（11）Air side added with insulating layer, it is warm in water-bath pipe for ensureing
The stability of degree.
5. the incorgruous experimental provision for storing heat release Evolution of Study of The Underground space soil body transverse and longitudinal according to claim 1,
It is characterized in that：The incorgruous heat and mass coupling experiment block of transverse and longitudinal（C）Middle underground space side soil body longitudinal direction depth is by required research
The characteristic thickness of the underground space, isothermal layer depth obtain；Underground space side soil body lateral distance takes the influence pole of indoor temperature
Range line is from for its lateral distance；And under geometric proportion according toCriterion numeral makes experimental period；When heat retention effect is eliminated in consideration
When coping with the influence of experimental result, the size in soil body transverse and longitudinal direction is expanded to 1.3 times, makes last soil body shape.
6. the incorgruous experimental provision for storing heat release Evolution of Study of The Underground space soil body transverse and longitudinal according to claim 3,
It is characterized in that：There are three types of residing heat and moisture transfer operating modes for the underground space tool of the simulation different buried depth：1. entire underground space side
Wall be in soil maximum temperature values point with a distance from wall surface on, the lateral soil body is influenced significantly by outdoor air parameter fluctuation；②
When entire side wall is between characteristic thickness and isothermal layer, the lateral soil body is joined by outdoor air parameter and underground space room air
Number joint effect；3. entire side wall is under isothermal layer, the lateral soil body is only influenced by underground space room air parameter.
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| JP3958731B2 (en) * | 2003-09-26 | 2007-08-15 | 財団法人日本化学繊維検査協会 | In-garment environment simulation measuring apparatus and evaluation method |
| CN101078699A (en) * | 2007-06-26 | 2007-11-28 | 东南大学 | Detection method for protecting integral heat-insulation property of structure |
| CN102359858A (en) * | 2011-10-27 | 2012-02-22 | 上海理工大学 | Experimental device for simulating non-isothermal coupling process of two airflows in metro environment by aid of liquid |
| CN102507129A (en) * | 2011-10-27 | 2012-06-20 | 上海理工大学 | Experimental device for simulating isothermal coupling process of two airflows under underground railway environment by use of liquid |
| CN104749347A (en) * | 2015-04-10 | 2015-07-01 | 上海理工大学 | Experimental device for researching evolution law of soil temperature and humidity field of subway running tunnel |
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| JP3958731B2 (en) * | 2003-09-26 | 2007-08-15 | 財団法人日本化学繊維検査協会 | In-garment environment simulation measuring apparatus and evaluation method |
| CN101078699A (en) * | 2007-06-26 | 2007-11-28 | 东南大学 | Detection method for protecting integral heat-insulation property of structure |
| CN102359858A (en) * | 2011-10-27 | 2012-02-22 | 上海理工大学 | Experimental device for simulating non-isothermal coupling process of two airflows in metro environment by aid of liquid |
| CN102507129A (en) * | 2011-10-27 | 2012-06-20 | 上海理工大学 | Experimental device for simulating isothermal coupling process of two airflows under underground railway environment by use of liquid |
| CN104749347A (en) * | 2015-04-10 | 2015-07-01 | 上海理工大学 | Experimental device for researching evolution law of soil temperature and humidity field of subway running tunnel |
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