Adjusting method and system for keeping room temperature constant

Abstract

The invention relates to the technical field of heat supply adjustment, in particular to an adjustment method and system for keeping the room temperature constant, and the system comprises a building information collector, a room temperature sensor, a heat adjustment actuator, a temperature control device, an outdoor environment information collection unit and a heat supply control platform. The room temperature sensor is arranged in a heat supply user room and used for collecting the room temperature in the heat supply user room and sending the room temperature to the building information collector. The temperature control device is arranged in a heat supply user room and used for setting the set temperature in the heat supply user room and sending the set temperature to the building information collector. The building information collector is used for receiving the room temperature and the set temperature of each heat supply user; the room temperature and the set temperature of each heat supply user and the position orientation information of each heat supply user are sent to a heat supply control platform; the heat supply building comprises a plurality of heat supply users; the outdoor environment information acquisition unit is used for acquiring outdoor environment information; the outdoor environment information comprises outdoor temperature, illumination intensity and wind direction and wind speed.

Description

Technical Field

[0001] The present invention relates to the technical field of heating regulation, and in particular to a regulation method and system for maintaining a constant room temperature. Background Art

[0002] Affected by thermal inertia, conductivity and outdoor natural factors, the existing heating regulation system cannot meet its requirements, that is, it consumes more heat and wastes energy, and also causes user dissatisfaction.

[0003] In view of this, we propose a method and system for maintaining a constant room temperature. Summary of the invention

[0004] The object of the present invention is to provide a method and system for maintaining a constant room temperature, so as to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A method for maintaining a constant room temperature, comprising the steps of: calculating the heat consumption when the room temperature of a heating user is maintained at a set temperature, obtaining a change value of a target temperature, wherein the target temperature includes one or more of the temperature of the target object and the ambient temperature of the environment in which the target object is located; installing a temperature controller indoors, inputting the target temperature into the temperature controller, memorizing the target temperature, and maintaining the indoor temperature between the target temperature and the outdoor temperature through a temperature control device;

[0007] Step 2: The heat consumption includes the heat consumption of the enclosure structure; the enclosure structure includes the external walls and ground of the heating user;

[0008] Step three: provide corresponding heating amount according to the sum of heat consumption of all heating users, adjust the temperature of the gas or liquid output by the temperature-adjustable device according to the change value of the target temperature, so that the temperature of the target object is maintained in a constant range, and the temperature of the target object is obtained from an infrared radiation temperature device or from a temperature sensor provided on the target object; wherein the infrared radiation temperature device is used to detect the temperature of the target object.

[0009] Step 4: The ambient temperature is obtained from a temperature sensor disposed at a designated position, where the designated position is a preset position that can cause a change in the ambient temperature.

[0010] Preferably, the heat transfer coefficient K of the enclosure structure is calculated by any of the following formulas:

[0011] Among them, is the heat transfer resistance of the enclosure structure, is the heat transfer coefficient of the inner surface of the enclosure structure, is the heat transfer coefficient of the outer surface of the enclosure structure, are the heat transfer resistances of the inner and outer surfaces of the enclosure structure respectively, is the thickness of each layer of material of the enclosure structure, is the thermal conductivity of each layer of material of the enclosure structure, and is the heat transfer resistance of the enclosure structure itself.

[0012] Among them, the heat consumption also includes the heat consumption of cold air penetration:

[0013] Q2=0.28Cpρwn·L(tn-twn)

[0014] Among them, Cp is the constant pressure specific heat capacity of air, ρwn is the air density at the calculated outdoor temperature of heating, and L is the amount of infiltrated cold air.

[0015] The method of inputting the target temperature into the temperature controller comprises the following steps:

[0016] Displaying the target temperature adjustment area on the touch screen of the central temperature controller;

[0017] receiving a sliding touch operation at any position in the adjustment area;

[0018] The set value of the target temperature is adjusted according to the displacement size of the sliding touch operation so that the target temperature reaches the set value. When the set value is reached and the sliding operation is stopped for a period of time, the touch screen displays a target temperature confirmation dialog box, which displays whether the target temperature needs to be set to the value. If yes is selected, the central control temperature controller sets the value as the target temperature value. If no is selected or there is no touch action in the temperature adjustment area for a period of time, the value is not used as the target temperature value.

[0019] A regulating system for maintaining a constant room temperature, comprising a building information collector, a room temperature sensor, a heat regulating actuator, a temperature control device, an outdoor environment information collection unit and a heating control platform;

[0020] The room temperature sensor is installed in the indoor heating user to collect the room temperature of the heating user and send it to the building information collector;

[0021] The temperature control device is installed in the indoor room of the heating user, and is used to set the set temperature in the indoor room of the heating user and send it to the building information collector;

[0022] The building information collector is used to receive the room temperature and set temperature of each heating user; and send the room temperature, set temperature and location information of each heating user to the heating control platform; the heating building includes multiple heating users;

[0023] An outdoor environment information collection unit is used to collect outdoor environment information; the outdoor environment information includes outdoor temperature, light intensity, and wind direction and speed;

[0024] The heating control platform is used to obtain the user heating adjustment amount and the building heating adjustment amount of each heating user through the room temperature adjustment method according to the room temperature of each heating user, the set temperature of each heating user, the location orientation information of each heating user and the outdoor environment information, and send them to the building information collector and the heat exchange station control unit respectively; the building heating adjustment amount is the sum of the user heating adjustment amounts of all heating users in the heating building;

[0025] The heat exchange station control unit is used to adjust the heat supply of the heat network to the heating building according to the building heating adjustment amount;

[0026] Preferably, the building information collector is arranged in a heating building and pre-stores location and orientation information of each heating user.

[0027] Preferably, the building information collector is also used to adjust the opening of each user's heat regulation actuator according to the user's heat regulation amount, and then adjust the heat supply of the heating network to the corresponding heating user so that the room temperature of the corresponding heating user reaches the set temperature.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The method and system for maintaining a constant room temperature processes user information and outdoor weather information through a calculation model, and the processed information is converted into instructions and transmitted to the user actuator to adjust the user's heat consumption. The heat consumption of a single user is calculated by a model algorithm for simple, fine and repeated calculations, and the heat consumption of all users in the building is combined to determine the total heat consumption and heat consumption pattern of the building, and to find the heat consumption pattern of a single user; outdoor aerial remote sensing measurement technology is added to measure the heat dissipation of different users in different buildings, and the calculation results of the model algorithm are compared to determine the heat dissipation and heat dissipation speed of a single user in each period under different indoor and outdoor environmental factors. The thermal inertia and conductivity are accurately solved, and the heat supply of the heating network to the building and users is adjusted in advance to keep the indoor temperature constant. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The present invention is a schematic structural diagram of a regulating system for maintaining a constant room temperature.

[0031] In the figure: 1. Building information collector; 2. Room temperature sensor; 3. Heat regulation actuator; 4. Temperature control device; 5. Outdoor environment information collection unit; 6. Heating control platform. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example 1

[0034] See also Figure 1 As shown, a technical solution provided by the present invention is:

[0035] A method and system for maintaining a constant room temperature, comprising the following steps:

[0036] Step 1: Calculate the heat consumption when the room temperature of the heating user is kept at the set temperature, and obtain the change value of the target temperature, wherein the target temperature includes one or more of the temperature of the target object and the ambient temperature of the environment where the target object is located; install a temperature controller indoors, input the target temperature into the temperature controller, and the controller memorizes the target temperature, and maintains the indoor temperature between the target temperature and the outdoor temperature through the temperature control device;

[0037] Step 2: The heat consumption includes the heat consumption of the enclosure structure; the enclosure structure includes the external walls and ground of the heating user;

[0038] Step 3: providing corresponding heating amount according to the sum of the heat consumption of all heating users, adjusting the temperature of the gas or liquid output by the temperature-adjustable device according to the change value of the target temperature, so that the temperature of the target object is kept in a constant range, and the temperature of the target object is obtained from an infrared radiation temperature device, or from a temperature sensor provided on the target object; wherein the infrared radiation temperature device is used to detect the temperature of the target object;

[0039] Step 4: The ambient temperature is obtained from a temperature sensor disposed at a designated position, where the designated position is a preset position that can cause a change in the ambient temperature.

[0040] Furthermore, the heat consumption of the enclosure structure is calculated by the following formula:

[0041] Q1=KF(tn-twn)a

[0042] Among them, K is the heat transfer coefficient of the enclosure structure, F is the heat transfer area of ​​the enclosure structure, tn is the set temperature of the heating user, twn is the outdoor calculated temperature, and a is the temperature difference correction coefficient of the enclosure structure.

[0043] Furthermore, the heat transfer coefficient K of the enclosure structure is calculated by any of the following formulas:

[0044] Among them, is the heat transfer resistance of the enclosure structure, is the heat transfer coefficient of the inner surface of the enclosure structure, is the heat transfer coefficient of the outer surface of the enclosure structure, are the heat transfer resistances of the inner and outer surfaces of the enclosure structure respectively, is the thickness of each layer of material of the enclosure structure, is the thermal conductivity of each layer of material of the enclosure structure, and is the heat transfer resistance of the enclosure structure itself.

[0045] Among them, the heat consumption also includes the heat consumption of cold air penetration:

[0046] Q2=0.28Cpρwn·L(tn-twn)

[0047] Among them, Cp is the constant pressure specific heat capacity of air, ρwn is the air density at the calculated outdoor temperature of heating, and L is the amount of infiltrated cold air.

[0048] The method of inputting the target temperature into the temperature controller comprises the following steps:

[0049] Displaying the target temperature adjustment area on the touch screen of the central temperature controller;

[0050] receiving a sliding touch operation at any position in the adjustment area;

[0051] The set value of the target temperature is adjusted according to the displacement size of the sliding touch operation so that the target temperature reaches the set value. When the set value is reached and the sliding operation is stopped for a period of time, the touch screen displays a target temperature confirmation dialog box, which displays whether the target temperature needs to be set to the value. If yes is selected, the central control temperature controller sets the value as the target temperature value. If no is selected or there is no touch action in the temperature adjustment area for a period of time, the value is not used as the target temperature value.

[0052] A regulating system for maintaining a constant room temperature, comprising a building information collector 1, a room temperature sensor 2, a heat regulating actuator 3, a temperature control device 4, an outdoor environment information collection unit 5 and a heating control platform 6;

[0053] The room temperature sensor 2 is arranged in the indoor room of the heating user, and is used to collect the room temperature in the indoor room of the heating user and send it to the building information collector 1;

[0054] The temperature control device 4 is arranged in the indoor room of the heating user, and is used to set the set temperature in the indoor room of the heating user and send it to the building information collector 1;

[0055] The building information collector 1 is used to receive the room temperature and set temperature of each heating user; and send the room temperature, set temperature and position information of each heating user to the heating control platform 6; the heating building includes multiple heating users;

[0056] The outdoor environment information collection unit 5 is used to collect outdoor environment information; the outdoor environment information includes outdoor temperature, light intensity and wind direction and speed;

[0057] The heating control platform 6 is used to obtain the user heating adjustment amount and the building heating adjustment amount of each heating user through the room temperature adjustment method according to the room temperature of each heating user, the set temperature of each heating user, the location orientation information of each heating user and the outdoor environment information, and send them to the building information collector 1 and the heat exchange station control unit respectively; the building heating adjustment amount is the sum of the user heating adjustment amounts of all heating users in the heating building;

[0058] The heat exchange station control unit is used to adjust the heat supply of the heating network to the heating building according to the building heating adjustment amount.

[0059] Furthermore, the building information collector 1 is arranged in the heating building, and pre-stores the location and orientation information of each heating user.

[0060] Furthermore, the building information collector 1 is also used to adjust the opening of each user's heat regulation actuator 3 according to the user's heat regulation amount of each heating user, and then adjust the heat supply of the heating network to the corresponding heating user so that the room temperature of the corresponding heating user reaches the set temperature.

[0061] Example 2

[0062] The user's room temperature constant temperature intelligent control system consists of the user's indoor temperature collector, heat regulation actuator, information collector, real-time continuous communication facilities, outdoor weather information collector, and intelligent heating digital management and control platform.

[0063] The user side installs a temperature control device, and the user can set the indoor temperature locally, remotely, and at any time according to their own needs; a temperature collector is set according to the indoor structure of the house, and a user information collector is set in the building; a smooth and continuous communication channel is established between the user's indoor temperature sensor, the building information collector and the background, and the temperature, location, orientation and other information of each building, each unit, and each household are transmitted to the smart heating digital management and control platform;

[0064] Small weather stations can be set up in different areas of each city, and public meteorological platform information can be used to collect real-time information such as outdoor temperature, light intensity, wind direction and speed, and transmit it to the smart heating digital management and control platform.

[0065] User heat correction factor algorithm:

[0066] 1. Calculation method 1 for the heat required to keep the user's room temperature constant:

[0067] Q h =W×F×F h ×α×n×l×m×c x

[0068] Where Q h ——The heat required for the user to maintain a constant room temperature

[0069] W——User heat index

[0070] F——User heating area

[0071] F h ——Heating load ratio

[0072] n——wind direction coefficient

[0073] l——wind coefficient

[0074] α——solar radiation correction factor

[0075] m——Fence ventilation coefficient

[0076] cx——building orientation

[0077] 2. Calculation method 2 for the heat required to keep the room temperature constant:

[0078] Q h =W×F×F h ×α×n×l×Y×c x

[0079] Where Q h ——The heat required for the user to maintain a constant room temperature

[0080] W——User heat index

[0081] F——User heating area

[0082] F h ——Heating load ratio

[0083] n——wind direction coefficient

[0084] l——wind coefficient

[0085] α——solar radiation correction factor

[0086] Y——Remote sensing measured coefficient

[0087] cx——building orientation

[0088] 2. Calculate the thermal index W of the residential building based on the average indoor temperature sent back by the user, the output heat of the building heat meter, and the real-time outdoor temperature;

[0089] Heat index calculation formula: The heating index is obtained by the actual heat consumption

[0090] W=Q / F / [(t n -t w ) / (tn -t wn )]

[0091] W——actual thermal index

[0092] Q——Actual heat consumption

[0093] F——Heating area

[0094] tn——Calculated temperature of heating room

[0095] twn——heating outdoor calculated temperature

[0096] tw——actual outdoor temperature

[0097] The heat transfer coefficient K value can be calculated using the following formula:

[0098]

[0099]

[0100]

[0101] In the formula

[0102] K——heat transfer coefficient of the enclosure structure, W / (㎡·℃);

[0103] R o ——Thermal transfer resistance of the enclosure structure, m2·℃ / W;

[0104] α n , α w ——Heat transfer coefficient of the inner and outer surfaces of the enclosure structure, W / (㎡·℃);

[0105] R n , R w ——Thermal transfer resistance of inner and outer surfaces of enclosure structure, m2·℃ / w;

[0106] δ i ——Thickness of each layer of the enclosure structure, m;

[0107] λ i ——Thermal conductivity of each layer of the enclosure structure material, W / (㎡·℃);

[0108] R j ——Thermal resistance of the enclosure structure (including single-layer or multi-layer structural material layers and enclosed air interlayers), m2·℃ / W.

[0109] To ensure that the indoor temperature is maintained at a certain level, the room has various ways to gain and lose heat. When the heat loss of the house is greater than the heat gain, in order to maintain the indoor temperature at the required temperature, the heat supply needs to be increased to ensure the indoor temperature is constant. The heat supplied to the house changes with the heat gain and loss of the house. The heat gain and loss of the house is related to the outdoor weather, the house fence, and the building orientation;

[0110] Calculation formula: The actual heat consumption is obtained through the temperature coefficient A

[0111] When calculating the basic heat consumption of the external envelope structure in direct contact with the atmosphere, the formula used is Q = KF (t-twn) (outdoor wall). However, the outside of the envelope structure of the heated room is sometimes not outdoors, but separated by an unheated room or space. At this time, the heat transfer through the envelope structure should be Q = KF (t-th) (wall of the unheated house), where th is the temperature of the non-heated room when the heat transfer reaches equilibrium. Since the temperature th of the non-heated room is difficult to determine, for the convenience of calculation, (t-twn)A can be used instead of (t-twn) for calculation in the project. The a value is called the temperature difference correction coefficient of the envelope structure. When the envelope structure is stably transferring heat, the basic heat consumption calculation formula is:

[0112] Q=KF(t-twn)A

[0113] Where Q is the basic heat consumption (actual heat consumption) of the enclosure structure, W;

[0114] K——heat transfer coefficient of the enclosure structure, W / (m2·℃);

[0115] S——heat transfer area of ​​the enclosure structure, m2; same as the previous heating area symbol, changed to S;

[0116] T——Calculated temperature in heating room, ℃;

[0117] twn——calculated outdoor temperature for heating, ℃;

[0118] A——Temperature difference correction coefficient of the enclosing structure.

[0119] First, calculate the average heat transfer resistance Rpj of the enclosure structure

[0120]

[0121] In the formula

[0122] R pj ——Average heat transfer resistance, m2·℃ / W;

[0123] F——total heat transfer area in the direction perpendicular to the heat flow, m2;

[0124] F i——The heat transfer area divided by the parallel heat flow direction, m2;

[0125] R i ——Corresponding to the heat transfer area F i Total thermal resistance on the surface, m2·℃ / W;

[0126] R n , R w ——Thermal transfer resistance of inner and outer surfaces, m2·℃ / W;

[0127] ——Average heat transfer resistance correction factor.

[0128] The comprehensive correction coefficient of cold air penetration pressure difference (fence ventilation coefficient) is calculated as follows:

[0129] m=C r +ΔC t (n tb +C)C h

[0130] Where C r ——Thermal pressure coefficient.

[0131] ΔC t ——Wind pressure difference coefficient. When it is impossible to measure the data, ΔC can be used. t =0.7;

[0132] n——Direction correction coefficient (wind direction coefficient) of the amount of infiltrated cold air under the action of pure wind pressure, see Figure 1 ;

[0133] C——Ratio of effective thermal pressure difference acting on doors and windows to effective wind pressure difference;

[0134] C h ——Altitude correction factor, calculated as follows:

[0135] C h =0.3h 0.4

[0136] In the formula, h is the center line elevation of calculated doors and windows (when h is less than 10m, the wind speed is V0, and the amount of cold air infiltrating remains unchanged, so when h is less than 10m, it should be calculated according to the reference height h=10m), m.

[0137] The ratio of effective thermal pressure difference to effective wind pressure difference is calculated as follows:

[0138]

[0139] In the formula

[0140] h z——Under the action of pure thermal pressure, the elevation of the neutral surface of the building, m, can be taken as half of the total height of the building;

[0141] t′ n ——Calculated temperature of the shaft that generates thermal pressure in the building, ℃.

[0142] For the infiltration air volume of multi-story buildings, when there is no relevant data, it can be calculated according to the following approximate formula: The first infiltration air volume algorithm

[0143] L=L′ o ln

[0144] Where L′ o ——The amount of air that penetrates into each meter of gap under different types of doors and windows and different wind speeds, m 3 / (m·h), can be adopted according to the local winter outdoor average wind speed experimental data;

[0145] L——Calculated length of door and window gaps, m;

[0146] N——Direction correction factor of infiltration air volume, see Figure 1 When calculating the amount of cold air infiltration, all directions should be calculated, but the actual infiltration amount in each direction is different, so it is necessary to multiply it by a direction correction coefficient for the infiltration air amount.

[0147] In engineering design, the number of room ventilation is also used to estimate the heat consumption of cold air infiltration in a room. When there is no relevant data, the second infiltration air volume algorithm is

[0148] It can be calculated as follows:

[0149] L=kV

[0150] Where V is the volume of the room, m 3 ;

[0151] K——Ventilation frequency, times / h.

[0152] Then substitute L to calculate the heat consumption of cold air penetration Q2.

[0153] Determination of minimum heat transfer resistance In engineering design, the minimum heat transfer resistance of the enclosure structure should be determined as follows:

[0154]

[0155] Where R0·min——minimum heat transfer resistance of the enclosure structure, m2·℃ / W;

[0156] Δty——the allowable temperature difference between the calculated temperature tn in the heating room and the inner surface temperature τn of the enclosure structure, ℃

[0157] tw——Calculated outdoor temperature of the enclosure structure in winter, ℃

[0158] is a stable heat transfer formula. In fact, as the outdoor temperature fluctuates, the temperature of the inner surface of the enclosure structure also fluctuates. For enclosure structures with different thermal inertia, the greater the thermal inertia of the enclosure structure, the smaller the fluctuation of its inner surface temperature under the same outdoor temperature fluctuation. The thermal inertia index D value of a flat wall enclosure structure composed of homogeneous multilayer materials can be calculated as follows:

[0159]

[0160] Where R i ——Thermal resistance of each layer of material, m2·℃ / W;

[0161] S i ——The heat storage coefficient of each layer of material, W / (㎡·℃).

[0162] Basic heat transfer formulas for area heat transfer calculation method

[0163]

[0164] Where Q is the total heat load between households, W;

[0165] K—heat transfer coefficient of floor slab and partition wall between households, W / (m2·℃);

[0166] F—area of ​​floor or partition between households, m2;

[0167] Δt—temperature difference between households for heat load calculation, ℃;

[0168] N—Probability coefficient of heat transfer between floors and partitions. When there is a floor or partition where heat transfer may occur, N is 0.8;

[0169] When there are two floors or partition walls where heat transfer may occur, or one floor and one partition wall, N is taken as 0.7;

[0170] When there are two floors and a partition wall where heat transfer may occur, or two partition walls and a floor, N is taken as 0.6;

[0171] When there are two floors and two partition walls where heat transfer may occur, N is taken as 0.5.

[0172] Calculation formula of volumetric heat index calculation method, calculation formula of volumetric heat index calculation method

[0173] In the formula

[0174] Q——total heat load between households, W;

[0175] α——Room temperature correction coefficient, generally 3.3;

[0176] qn——room heating volume heat index coefficient, W / (m3·℃);

[0177] V——room axis volume, m3;

[0178] Δt——temperature difference between households for heat load calculation, °C, which should be 8 °C when calculated by volume heat transfer;

[0179] N——Probability coefficient of simultaneous heat transfer between floor slabs and partition walls between households (same value as method 1);

[0180] M——Correction coefficient of the number of floor slabs and partition walls between households:

[0181] When there is a floor or partition wall where heat transfer may occur, M is 0.25; when there are two floors or partition walls where heat transfer may occur, or one floor and one partition wall, M is 0.5; when there are two floors and one partition wall where heat transfer may occur, or two partition walls and one floor, M is 0.75; when there are two floors and two partition walls where heat transfer may occur, M is 1. In fact, the above calculation formula can be simplified as: when there is one floor or partition wall where heat transfer may occur, Q = 2.64V;

[0182] When there are two floors or partition walls where heat transfer may occur, or one floor and one partition wall, Q = 4.62V; when there are two floors and one partition wall where heat transfer may occur, or two partition walls and one floor, Q = 5.94V; when there are two floors and two partition walls where heat transfer may occur, Q = 6.6V.

[0183] The heat transfer calculation methods used in the above regulations are exactly the same. They all calculate the heat transfer amount according to the actual temperature difference that may occur, and then consider the probability of simultaneous occurrence. It’s just that the heat transfer temperature difference and probability selected by each regulation are different. Relatively speaking, the "Design Code for Metered Heating of Central Heating Residential Buildings" has more detailed provisions on the selection of probability. From a theoretical point of view, the heat transfer temperature difference of neighboring households is the value obtained by thermal balance calculation under stable heat transfer conditions, assuming that the surrounding rooms are heated normally and the typical room is not heated. The temperature difference of unheated rooms is affected by both the temperature of the surrounding rooms and the outdoor temperature. Therefore, the heat transfer temperature difference of neighboring households in different regions will be different. In fact, even when the outdoor temperature is the same, the heat transfer temperature difference of neighboring households is different due to the energy-saving conditions of each building and the enclosure conditions of the building units. Moreover, the amount of heat transfer of neighboring households is proportional to the temperature difference of neighboring households. What is the appropriate temperature difference in the calculation? It must be verified through design trials of more projects and operation adjustments to obtain a relatively reliable simplified calculation method. Example of calculation of heating design heat load

[0184] As shown in the figure, this is the floor plan of an office building. Try to calculate the heating design heat load of the 101 office on the first floor.

[0185] Known conditions:

[0186] The calculated outdoor temperature for heating is Twn=-5℃; the outdoor wind speed in winter is 3.6m / s.

[0187] Calculated indoor temperature: office tn=18℃, corridor is not heated.

[0188] Enclosure structure:

[0189] External wall: a brick wall, with the outer surface plastered with cement mortar, and the inner surface plastered with cement mortar and white lime, both with a thickness of 20mm.

[0190] External windows: Single-layer steel windows, C-3: 1500mm×2300mm, sealed with sealing strips.

[0191] Floor height: 3.3m (measured from the upper surface of the ground of this floor to the upper surface of the ground of the upper floor).

[0192] Floor: Non-insulated floor.

[0193] Answer: 1. Basic heat consumption of the enclosure structure Q1

[0194] (1) South exterior wall

[0195] The heat transfer coefficient of the exterior wall is K = 2.08W / (m2·℃), and the temperature difference correction coefficient α = 1.

[0196] Heat transfer area F11 = (3.3 + 0.12) × 3.3 - 1.5 × 2.3 ≈ 7.84 (m2)

[0197] Basic heat consumption of south exterior wall:

[0198] Q11′=αKF11(tn-twn)=1×2.08×7.84×[18-(-5)]≈375.07(W)

[0199] The correction rate for the south direction is -15%, and no wind correction is required, that is, the correction rate is 0%. If the height does not exceed 4m, no height correction is required, that is, the height correction rate is 0%.

[0200] Actual heat consumption of south exterior wall:

[0201] Q11=Q11′(1-15%)=375.07×(1-15%+0%)×(1+0%)=318.81(W)

[0202] ((2)) South window

[0203] South exterior window heat transfer coefficient K = 6.40W / (m2·℃); temperature difference correction coefficient α = 1.0. Heat transfer area F12 = 1.5×2.3 = 3.45 (m2)

[0204] The basic heat consumption is:

[0205] Q12′=αKF12(tn-twn)=1×6.40×3.45×[18-(-5)]≈507.84(W)

[0206] The actual heat consumption of the south exterior window is:

[0207] Q12=Q12′(1-15%)=507.84×(1-15%+0%)×(1+0%)=431.66(W)

[0208] ((3) West exterior wall (calculation method is the same as that of the south exterior wall).

[0209] ((4) North interior wall) North interior wall

[0210] The heat transfer coefficient of the inner wall is K = 1.72W / (m2·℃); the corridor is not heated, and the temperature difference correction coefficient α = 0.7.

[0211] Heat transfer area F14 = (3.3 + 0.12) × 3.3 - 1.2 × 2.6 ≈ 8.17 (m2)

[0212] Basic heat consumption Q14′=αKF14(tn-twn)=0.7×1.72×8.17×(18+5)≈226.24(W)

[0213] The inner enclosure structure does not need to be modified, and the actual heat consumption

[0214] Q14 = Q14' = 226.24 (W)

[0215] ((5) North inner door (calculation method is the same as north inner wall)

[0216] (6) Ground

[0217] The ground is divided into zones such as Figure 1 shown.

[0218] Heat transfer coefficient of the first zone K1 = 0.47W / (m2·℃)

[0219] Heat transfer area F16 = (3.3-0.12) × 2 + (6.6-0.12) × 2 = 19.32 (m2)

[0220] The heat consumption of the first zone is:

[0221] Q16′=αK1F16(tn-twn)=1×0.47×19.32×(18+5)≈208.85(W)

[0222] The second zone heat transfer coefficient K2 = 0.23W / (m2·℃)

[0223] Heat transfer area F26 = (3.3-0.12-2) × (6.6-0.12-2) = 5.29 (m2)

[0224] The heat consumption of the second zone is:

[0225] Q26′=αK1F26(tn-twn)=1×0.23×5.29×[18-(-5)]≈27.97(W)

[0226] The heat transfer heat consumption of the ground is:

[0227] Q16=Q16′+Q26′=208.85+27.97=236.82(W)

[0228] The total heat transfer consumption of the room envelope structure of Room 101 is:

[0229] Q1=318.81+431.66+1007.85+709.95+146.18+236.82=2314.69(W)

[0230] 2. Heat consumption of cold air penetration

[0231] According to the gap method, the south window structure is as follows: Figure 1 As shown, the upper part has a 500-meter-high window glass fixed, and the lower part is two sliding windows with a height of 1800.

[0232] At a wind speed of ν = 3.6 m / s, the amount of cold air that penetrates into the single-layer steel window per meter of gap per hour is 3.38 m3 / (m·h).

[0233] Since the window is sealed with sealing strips, the infiltration amount is reduced to 0.6 times.

[0234] L0′=3.38×0.6=2.028m3 / (m·h)

[0235] According to twn = -5℃, we can get ρwn = 1.4kg / m3; check the orientation correction coefficient in the "Heating and Ventilation Code" and take the south orientation correction coefficient.

[0236] n=1.0.

[0237] The amount of cold air infiltration from the south exterior window is:

[0238] L=L0′·l·n=2.028×8.4×1≈17(m3 / h)

[0239] The heat consumption of cold wind penetration from the south window is:

[0240] Q2=0.28Cpρwn·L(tn-twn)

[0241] =0.28×1×1.4×17×[18-(-5)]

[0242] ≈153.272(W)

[0243] The basic concepts of heat load in heating system design, the calculation formula and method of basic heat consumption of enclosure structure, the calculation method of additional (corrected) heat consumption and cold air infiltration heat consumption of enclosure structure, and the calculation of minimum heat transfer resistance and economic heat transfer resistance of enclosure structure.

[0244] Household orientation location classification:

[0245] Building location

[0246]

[0247] Thermal coefficient grade table

[0248]

[0249]

[0250] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the features of the various dependent claims and herein may be combined in a manner different from that described in the original claims. It should also be understood that the features described in conjunction with the individual embodiments may be used in other embodiments.

Claims

1. A method for maintaining a constant room temperature, characterized in that: The following steps are involved: Step 1: Calculate the heat consumption when the room temperature of the heating user is kept at the set temperature, and obtain the change value of the target temperature, wherein the target temperature includes one or more of the temperature of the target object and the ambient temperature of the environment where the target object is located; install a temperature controller indoors, input the target temperature into the temperature controller, and the controller memorizes the target temperature, and maintains the indoor temperature between the target temperature and the outdoor temperature through the temperature control device; Step 2: The heat consumption includes the heat consumption of the enclosure structure; the enclosure structure includes the external walls and ground of the heating user; Step 3: providing corresponding heating amount according to the sum of the heat consumption of all heating users, adjusting the temperature of the gas or liquid output by the temperature-adjustable device according to the change value of the target temperature, so that the temperature of the target object is kept in a constant range, and the temperature of the target object is obtained from an infrared radiation temperature device, or from a temperature sensor provided on the target object; wherein the infrared radiation temperature device is used to detect the temperature of the target object; Step 4: The ambient temperature is obtained from a temperature sensor disposed at a designated position, where the designated position is a preset position that can cause a change in the ambient temperature.

2. The method for maintaining a constant room temperature according to claim 1, characterized in that: The heat consumption of the enclosure structure is calculated by the following formula: Q1=KF(tn-twn)a Among them, K is the heat transfer coefficient of the enclosure structure, F is the heat transfer area of ​​the enclosure structure, tn is the set temperature of the heating user, twn is the outdoor calculated temperature, and a is the temperature difference correction coefficient of the enclosure structure.

3. The method for maintaining a constant room temperature according to claim 1, characterized in that: The heat transfer coefficient K of the enclosure structure is calculated by any of the following formulas: Among them, R o is the heat transfer resistance of the enclosure structure, α n is the heat transfer coefficient of the inner surface of the enclosure structure, α w is the heat transfer coefficient of the outer surface of the enclosure structure, R n , R w are the heat transfer resistance of the inner and outer surfaces of the enclosure structure, δ i is the thickness of each layer of the enclosure structure, λ i is the thermal conductivity of each layer of the building envelope, R j is the heat transfer resistance of the enclosure structure.

4. The method for maintaining a constant room temperature according to claim 1, characterized in that: The heat consumption also includes the heat consumption of cold air penetration: Q2=0.28Cpρwn·L(tn-twn) Among them, Cp is the constant pressure specific heat capacity of air, ρwn is the air density at the calculated outdoor temperature of heating, and L is the amount of infiltrated cold air.

5. The method for maintaining a constant room temperature according to claim 1, characterized in that: The method for inputting a target temperature in a temperature controller comprises the following steps: Displaying the target temperature adjustment area on the touch screen of the central temperature controller; receiving a sliding touch operation at any position in the adjustment area; The set value of the target temperature is adjusted according to the displacement size of the sliding touch operation so that the target temperature reaches the set value. When the set value is reached and the sliding operation is stopped for a period of time, the touch screen displays a target temperature confirmation dialog box, which displays whether the target temperature needs to be set to the value. If yes is selected, the central control temperature controller sets the value as the target temperature value. If no is selected or there is no touch action in the temperature adjustment area for a period of time, the value is not used as the target temperature value.

6. A regulating system for maintaining a constant room temperature, characterized in that: It comprises a building information collector (1), a room temperature sensor (2), a heat regulation actuator (3), a temperature control device (4), an outdoor environment information collection unit (5) and a heating control platform (6); The room temperature sensor (2) is arranged in the indoor room of the heating user, and is used to collect the room temperature in the indoor room of the heating user and send it to the building information collector (1); The temperature control device (4) is arranged in the indoor room of the heating user, and is used to set the set temperature in the indoor room of the heating user and send it to the building information collector (1); The building information collector (1) is used to receive the room temperature and set temperature of each heating user; and send the room temperature, set temperature and location information of each heating user to the heating control platform (6); the heating building includes multiple heating users; An outdoor environment information collection unit (5) is used to collect outdoor environment information; the outdoor environment information includes outdoor temperature, light intensity, and wind direction and speed; The heating control platform (6) is used to obtain the user heating adjustment amount and the building heating adjustment amount of each heating user through a room temperature adjustment method according to the room temperature of each heating user, the set temperature of each heating user, the location orientation information of each heating user and the outdoor environment information, and send them to the building information collector (1) and the heat exchange station control unit respectively; the building heating adjustment amount is the sum of the user heating adjustment amounts of all heating users in the heating building; The heat exchange station control unit is used to adjust the heat supply of the heating network to the heating building according to the building heating adjustment amount.

7. The regulating system for maintaining a constant room temperature according to claim 6, characterized in that: The building information collector 1 is arranged in a heating building and pre-stores the location and orientation information of each heating user.

8. The regulating system for maintaining a constant room temperature according to claim 6, characterized in that: The building information collector 1 is also used to adjust the opening of each user's heat regulation actuator 3 according to the user's heat regulation amount, and then adjust the heat supply of the heating network to the corresponding heating user so that the room temperature of the corresponding heating user reaches the set temperature.

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