An energy-saving system for an embedded pipe wall in prefabricated buildings

Abstract

The present invention discloses an energy-saving system for an embedded pipe wall in prefabricated buildings, which relates to the field of building technology. The system includes: a cold and heat source, a heat preservation water tank, an entrance module, an embedded pipe wall, and a controller. The cold and heat source is used to provide a cold source and a heat source to the heat preservation water tank. An entrance module is provided on each floor of the building. The entrance water supply pipe is connected to the water outlet of the heat preservation water tank, and the entrance water return pipe is connected to the water return port of the heat preservation water tank. The entrance water supply pipe and the entrance water return pipe are respectively connected to the horizontal water supply main pipe and the horizontal water return main pipe on each floor of the building. The embedded pipe wall is used to form the exterior wall of the building. The horizontal water supply main pipe and the horizontal water return main pipe on each floor of the building are respectively connected to the water inlet and the water outlet of the embedded pipe in the embedded pipe wall. The controller is used to receive acquisition signals or send control signals. The present invention can achieve summer cooling and winter heating, can be regulated in zones and the temperature can be adjusted according to needs, and can reduce energy consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of construction, and particularly to an energy-saving system for an embedded pipe wall in a prefabricated building. Background Art

[0002] A prefabricated building refers to a building in which a large amount of on-site work in the traditional construction method is transferred to a factory. Building components and fittings (such as floor slabs, wall panels, stairs, balconies, etc.) are processed and manufactured in the factory and transported to the construction site, where they are assembled and installed on-site through reliable connection methods. Prefabricated buildings mainly include precast prefabricated concrete structures, steel structures, modern timber structures, etc. Because they adopt standardized design, factory production, assembly construction, information management, and intelligent application, they are representatives of modern industrial production methods. The wall structure of a prefabricated building is assembled from precast large-scale internal and external wall panels, floor slabs, roof panels, and other plates, and is the main type of fully prefabricated buildings in industrialized system buildings. Plate buildings can reduce the structural weight, improve labor productivity, expand the usable area of the building, and enhance the earthquake resistance. The inner walls of plate buildings are mostly solid or hollow reinforced concrete slabs, and the outer wall panels are mostly reinforced concrete composite panels with thermal insulation layers, or can also be made of lightweight aggregate concrete, foam concrete, or large-hole concrete to form wall panels with exterior finishes. At present, the existing wall structures of prefabricated buildings only have conventional functions such as heat insulation, sound insulation, and waterproofing. After the building is put into use, the indoor temperature still mainly relies on heating and cooling appliances (such as air conditioners, fans, heaters, etc.) for adjustment, usually using high-grade heat sources such as electric energy and fossil energy, which is not energy-saving and environmentally friendly enough.

[0003] Existing prefabricated wall energy-saving technologies mainly use the reduction of heat transfer coefficient as the main mechanism. By adding lightweight insulation materials to the wall, the thermal resistance is effectively increased and the temperature difference heat transfer is reduced. However, this method has a small heat storage capacity and is difficult to effectively attenuate outdoor temperature waves. Moreover, adding lightweight insulation materials to the load-bearing wall weakens the wall's load-bearing capacity, which is insufficient to support the upper load of the wall. The use of embedded tube enclosure cooling technology is an insulation technology that has been developed in recent years along with the promotion of radiant cooling technology. Fluid pipes are embedded in the building's enclosure structure, such as floor slabs, floors or walls, to form storage and transfer of cold energy inside the concrete building components. Therefore, combining embedded tube walls with prefabricated concrete walls and studying the temperature control technology of prefabricated concrete building exterior walls is of great significance to building energy conservation. Most of the existing embedded pipe wall cooling systems can only solve the problem of high air conditioning load in summer. A large part of the air conditioning load in summer comes from solar radiation energy, but the solar radiation in all directions of the building is uneven. Taking my country as an example, the south-facing wall receives much more solar radiation than the north-facing wall in summer. The traditional system can only regulate the flow rate overall to take away the heat, which will lead to energy waste or insufficient cooling. Most of the existing embedded pipe wall heating systems can only solve the problem of winter heating. There is no integrated solution for summer air conditioning and winter heating, and it cannot achieve zone flow control. Summary of the invention

[0004] In order to overcome the defects in the above-mentioned prior art, the present invention provides an embedded pipe wall energy-saving system for prefabricated buildings, which can achieve summer cooling and winter heating under the condition of reasonable selection of cold and heat sources, and can be controlled by zone and temperature can be adjusted on demand to reduce energy consumption.

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

[0006] An embedded pipe wall energy-saving system for prefabricated buildings, comprising: a cold and hot source, a heat preservation water tank, an entry module, an embedded pipe wall, and a controller;

[0007] The cold and hot sources are used to provide cold and hot sources to the thermal insulation water tank to heat or cool the circulating water in the thermal insulation water tank;

[0008] Each floor of the building is provided with an entry module; the entry module is provided with an entry water supply pipe and an entry water return pipe; the water supply inlet of the entry water supply pipe is connected to the water outlet of the thermal insulation water tank, and the entry water supply pipe is connected to the horizontal water supply main pipe of each floor of the building through a horizontal water supply pipe, so as to transport circulating water to the horizontal water supply main pipe of each floor of the building; the horizontal water return main pipe of each floor of the building is connected to the entry water return pipe through a horizontal water return pipe, and the water return outlet of the entry water return pipe is connected to the water return port of the thermal insulation water tank, so as to return circulating water to the thermal insulation water tank; the entry module is used to control the circulating water input and circulating water output of each floor of the building;

[0009] The embedded pipe wall is used to form the building exterior wall, and a control box and embedded pipes are provided in the embedded pipe wall; a wall water supply pipe and a wall return water pipe are provided in the control box; the water supply inlet of the wall water supply pipe is connected to the horizontal water supply main pipe of each floor of the building, and the wall water supply pipe is connected to the water inlet of the embedded pipe through a first water supply pipe; the water return outlet of the wall return water pipe is connected to the horizontal water return main pipe of each floor of the building, and the wall return water pipe is connected to the water outlet of the embedded pipe through a first water return pipe; the control box is used to control the input and output of the circulating water in the embedded pipe;

[0010] The controller is respectively communicatively connected to the cold and heat source, the heat preservation water tank, the household module, and the embedded pipe wall, and is used to receive the collected signals or send control signals.

[0011] Preferably, a booster pump, a flow control valve, a heat meter, a filter, and a stop valve are sequentially provided on the horizontal water supply pipe of the household module along the water supply direction; a stop valve is provided on the horizontal water return pipe of the household module; among them, the booster pump, the flow control valve, the heat meter, the filter, and the stop valve are all communicatively connected to the controller.

[0012] Preferably, the household module is also used to connect the vertical water supply main pipe and the vertical water return main pipe between the upper and lower floors of the building, and the water supply inlet of the household water supply pipe and the water return outlet of the household water return pipe of one or more household modules are correspondingly connected to the water outlet and the water return port of the heat preservation water tank, and the water supply inlet of the household water supply pipe and the water return outlet of the household water return pipe of the remaining household modules are correspondingly connected to the vertical water supply outlet of the household water supply pipe and the vertical water return inlet of the household water return pipe of the adjacent floor household module.

[0013] Preferably, the household water supply pipe and the household water return pipe of the household module are also respectively connected to an exhaust pipe, and an automatic exhaust valve is provided on the exhaust pipe.

[0014] Preferably, a thermometer, a thermal actuator, and a flow meter are provided on the first water supply pipe; a thermometer and a stop valve are provided on the first water return pipe; among them, the thermometer, the thermal actuator, the flow meter, and the stop valve are all communicatively connected to the controller.

[0015] Preferably, a connection box is also provided in the embedded pipe wall; an inlet connection pipe and a return connection pipe are provided in the connection box; the inlet of the inlet connection pipe is connected to the second water supply outlet of the wall water supply pipe, and the outlet of the return connection pipe is connected to the second water return inlet of the wall return water pipe;

[0016] The connection box is used to connect the wall water supply pipe and the wall return water pipe between adjacent embedded pipe walls on the same floor of a building; the water supply inlet of the wall water supply pipe and the water return outlet of the wall return water pipe of the control box in one or more embedded pipe walls are correspondingly connected to the horizontal water supply main pipe and the horizontal water return main pipe of the building on this floor, and the first water supply inlet of the wall water supply pipe and the first water return outlet of the wall return water pipe of the control box on the remaining embedded pipe walls are correspondingly connected to the outlet of the water inlet connecting pipe and the inlet of the water return connecting pipe of the connection box on the adjacent embedded pipe wall.

[0017] Preferably, an indoor temperature sensor is provided on the inner wall of the embedded pipe wall for collecting the indoor temperature; an outdoor radiation sensor is provided on the outer wall of the embedded pipe wall for collecting the solar radiation intensity; the indoor temperature sensor and the outdoor radiation sensor are both communicatively connected to the controller.

[0018] Preferably, the controller is also communicatively connected to a climate compensator provided outdoors, and the climate compensator is used to obtain the outdoor air temperature, and the controller controls the cold and heat source according to the outdoor air temperature.

[0019] Preferably, the controller controls the flow rate in the embedded pipe wall, specifically as follows:

[0020] S11, the user sets the indoor preset temperature to t0;

[0021] S12, collect the indoor temperature as t1 through the indoor temperature sensor provided on the inner wall of the embedded pipe wall; collect the wall water supply temperature as t2 and the wall return water temperature as t3 respectively through the thermometer 51 provided on the first water supply pipe and the first water return pipe; collect the solar radiation intensity as r1 through the outdoor radiation sensor provided on the outer wall of the embedded pipe wall; each collected data is sent to the controller;

[0022] S13, the controller determines whether |t0 - t1| is greater than or equal to the set first threshold D1. If it is greater than or equal to, the flow rate in the embedded pipe wall is regulated, and step S14 is executed; if it is less than, the flow rate in the embedded pipe wall is not regulated, and step S15 is executed;

[0023] S14, the controller calculates the required flow rate Qn of the embedded pipe wall according to the collected indoor preset temperature t0, indoor temperature t1, wall water supply temperature t2, and wall return water temperature t3, Qn = G(t0, t1, t2, t3); where G(.) is the set calculation function for the required flow rate of a single wall;

[0024] The controller calculates the radiation compensation flow rate ΔQ of the embedded pipe wall according to the collected solar radiation intensity r1, ΔQ = F(r1); where F(.) is the set calculation function for the radiation compensation flow rate;

[0025] The controller calculates the actual regulated flow rate Qfn of the embedded pipe wall as Qfn = Qn + ΔQ based on the required flow rate Qn and the radiation compensation flow rate ΔQ of the embedded pipe wall.

[0026] Execute step S16;

[0027] In S15, the embedded pipe wall maintains the current flow rate, that is, the actual regulated flow rate Qfn of the embedded pipe wall is the current flow rate; execute step S16;

[0028] In S16, in the manner of steps S12 - S15, the controller judges each embedded pipe wall respectively and obtains the actual regulated flow rate Qfn of each embedded pipe wall.

[0029] In S17, the controller calculates the floor flow rate Qi of each floor of the building as Qi = ΣQfn based on the actual regulated flow rate Qfn of each embedded pipe wall, and calculates the total building flow rate Qo as Qo = ΣQi.

[0030] In S18, the controller realizes the flow rate regulation within each embedded pipe wall according to the actual regulated flow rate Qfn of each embedded pipe wall, the floor flow rate Qi of each floor of the building, and the total building flow rate Qo.

[0031] The advantages of the present invention are as follows:

[0032] (1) An energy-saving system for an embedded pipe wall in a prefabricated building according to the present invention can achieve summer refrigeration and winter heating under the condition of reasonable configuration of cold and heat sources, can be regulated in zones and temperature can be adjusted according to demand, thus reducing energy consumption.

[0033] (2) The household module in this system can detect the heat consumption (cooling consumption) of each floor user, regulate the flow rate of each floor, and is convenient for connecting the vertical supply and return water pipes and the horizontal pipes in the wall in terms of structure.

[0034] (3) An embedded pipe is laid in the embedded pipe wall of the present invention. By inputting circulating hot water or circulating cold water into the embedded pipe, the wall can be heated or cooled, thereby realizing the temperature regulation control of the room.

[0035] (4) This system can use low-grade cold and heat sources to maintain a constant indoor temperature, and can keep the indoor temperature constant only through the circulation of normal temperature water for most of the year.

[0036] (5) The control box can play the role of accurately positioning the end of the embedded pipe during construction and accurately aligning between adjacent two walls during on-site installation in terms of structure. It accommodates and protects devices such as sensors and has the advantage of being convenient for maintenance.

[0037] (6) The control box can realize the flow rate control and temperature monitoring of a single wall in terms of hardware (personalized temperature control can be realized through software update later).

[0038] (7) The design of the connection box solves the positioning problem of the embedded pipes during construction and provides an operating space for the fusion connection of adjacent wall pipes during installation.

[0039] (8) By introducing feedforward control of solar radiation, this system can offset the influence of solar radiation in advance by increasing the flow rate when the external environment deviates from the design value. Description of the Drawings

[0040] Figure 1 It is an overall schematic diagram of an energy-saving system for an embedded pipe wall in a prefabricated building.

[0041] Figure 2 It is a schematic diagram of the household module in the energy-saving system of the embedded pipe wall.

[0042] Figure 3 It is a connection schematic diagram of the control box and the connection box in the embedded pipe wall.

[0043] Figure 4 It is a schematic diagram of the control box housing in the embedded pipe wall.

[0044] Figure 5 It is a schematic diagram of the connection box housing in the embedded pipe wall.

[0045] Figure 6 It is a disassembly schematic diagram of an embedded pipe wall for a prefabricated building.

[0046] Figure 7 It is a connection schematic diagram of the embedded pipe and the embedded pipe locator.

[0047] Figure 8 It is a schematic diagram of the connecting piece in the embedded pipe locator.

[0048] Figure 9 It is a schematic diagram of the pipe embedding positioning part in the embedded pipe locator Figure 1 .

[0049] Figure 10 It is a schematic diagram of the pipe embedding positioning part in the embedded pipe locator Figure 2 .

[0050] Figure 11 It is a schematic diagram of the positioning rod in the embedded pipe locator.

[0051] Description of the Reference Numerals:

[0052] 1 - Cold and heat source, 2 - Insulated water tank, 3 - Household module, 4 - Embedded pipe wall, 5 - Controller, 6 - Heat exchanger, 7 - Control box, 8 - Connection box, 9 - Embedded pipe;

[0053] 31 - Inlet water supply pipe, 32 - Inlet return water pipe, 311 - Water supply inlet, 312 - Horizontal water supply pipe, 313 - Vertical water supply outlet, 321 - Return water outlet, 322 - Horizontal return water pipe, 323 - Vertical return water inlet;

[0054] 41 - Embedded pipe locator, 42 - Structural steel bar, 43 - Outer shell, 411 - Locating rod, 412 - Pipe - embedding locating part, 413 - Connecting part, 4111 - Slide groove, 4112 - Locating hole, 4121 - Locating ring, 4122 - Opening ring, 4131 - Connecting ring, 4132 - Connecting rod;

[0055] 51 - Thermometer, 52 - Thermal actuator, 53 - Flowmeter, 54 - Stop valve;

[0056] 71 - Wall water supply pipe, 72 - Wall return water pipe, 711 - Water supply inlet, 712 - First water supply pipe, 713 - Second water supply outlet, 721 - Return water outlet, 722 - First return water pipe, 723 - Second return water inlet;

[0057] 81 - Inlet connecting pipe, 82 - Return water connecting pipe, 811 - Inlet of the inlet connecting pipe, 812 - Outlet of the inlet connecting pipe, 821 - Outlet of the return water connecting pipe, 822 - Inlet of the return water connecting pipe. Detailed implementation mode

[0058] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0059] Embodiment 1

[0060] As Figure 1 shown, an embedded - pipe wall energy - saving system for prefabricated buildings in this Embodiment 1 includes: a cold - heat source 1, a heat - preservation water tank 2, an inlet module 3, an embedded - pipe wall 4, and a controller 5.

[0061] The cold - heat source 1 is used to provide a cold source and a heat source. The cold - heat source 1 can select a single cold - heat source or multiple cold - heat sources according to actual situations, such as an air - source heat pump, a shallow - geothermal - source heat pump, a solar collector, a small cooling tower, a groundwater - source heat pump, etc.; the cold - heat source 1 is provided with an outlet and an inlet.

[0062] The heat preservation water tank 2 is provided with a heat exchanger 6. The inlet of the heat exchanger 6 is connected to the outlet of the cold and heat source 1, and the outlet of the heat exchanger 6 is connected to the inlet of the cold and heat source 1, which is used to cool or heat the circulating water in the heat preservation water tank. The heat preservation water tank 2 is provided with a water outlet and a water return port.

[0063] Each floor of the building is provided with an entrance module 3, which consists of Figure 2 As shown, the entrance module 3 is provided with an entrance water supply pipe 31 and an entrance water return pipe 32. The water supply inlet 311 of the entrance water supply pipe 31 is connected to the water outlet of the heat preservation water tank 2. The entrance water supply pipe 31 is connected to the horizontal water supply main pipe of each floor of the building through a horizontal water supply pipe 312, which is used to transport the circulating water to the horizontal water supply main pipe of each floor of the building. The horizontal water return main pipe of each floor of the building is connected to the entrance water return pipe 32 through a horizontal water return pipe 322. The water return outlet 321 of the entrance water return pipe 32 is connected to the water return port of the heat preservation water tank 2, which is used to return the circulating water to the heat preservation water tank 2.

[0064] As shown by Figure 2 As shown, the horizontal water supply pipe 312 of the entrance module 3 is successively provided with a booster pump, a flow control valve, a heat meter, a filter, and a stop valve along the water supply direction. The filter is used to prevent impurities in the pipeline from entering the indoor pipeline and blocking the pipeline. The heat meter is used to measure the heat consumption of each floor. The flow control valve is communicatively connected to the controller 5 and executes the flow regulation signal of the controller to control the total flow of each floor. Since the height of the floor is relatively high in many cases, the circulating water pump in the heat preservation water tank 2 cannot provide sufficient water pressure. Therefore, a self-starting and stopping booster pump is arranged in the horizontal water supply pipe 312 to ensure that the designed water pressure is reached on each floor. The horizontal water return pipe 322 of the entrance module 3 is provided with a stop valve.

[0065] In the first embodiment, as shown by Figure 2 As shown, the entrance module 3 is also used to connect the vertical water supply main pipe and the vertical water return main pipe between the upper and lower floors of the building. Therefore, only the water supply inlet 311 of the entrance water supply pipe 31 and the water return outlet 321 of the entrance water return pipe 32 of the entrance module 3 on the first floor need to be correspondingly connected to the water outlet and the water return port of the heat preservation water tank 2. The water supply inlets 311 of the entrance water supply pipes 31 and the water return outlets 321 of the entrance water return pipes 32 of the remaining entrance modules 3 can be correspondingly connected to the vertical water supply outlets 313 of the entrance water supply pipes 31 and the vertical water return inlets 323 of the entrance water return pipes 32 of the adjacent floor's entrance modules 3.

[0066] In the first embodiment, the entrance water supply pipe 31 and the entrance water return pipe 32 of the entrance module 3 located on the top floor of the building are both connected to an automatic air vent and an exhaust pipe.

[0067] As shown by Figure 3 As shown, the embedded pipe wall 4 forms the building exterior wall, and the embedded pipe 9 is laid in the embedded pipe wall 4.

[0068] As shown in Figure 3 , a control box 7 is provided in the embedded pipe wall 4; a wall water supply pipe 71 and a wall water return pipe 72 are provided in the control box 7; the water supply inlet 711 of the wall water supply pipe 71 is connected to the horizontal water supply main pipe of each floor of the building, and the wall water supply pipe 71 is connected to the water inlet of the embedded pipe 9 through a first water supply pipe 712; the water return outlet 721 of the wall water return pipe 72 is connected to the horizontal water return main pipe of each floor of the building, and the wall water return pipe 72 is connected to the water outlet of the embedded pipe 9 through a first water return pipe 722. In this Embodiment 1, the outer shell of the control box 7 is designed as shown in Figure 4 , and the through holes on the bottom wall and side wall of the outer shell of the control box 7 are used for the external connection of the wall water supply pipe 71 and the wall water return pipe 72.

[0069] As shown in Figure 3 , a thermometer 51, a thermostatic actuator 52, and a flow meter 53 are provided on the first water supply pipe 712; a thermometer 51 and a stop valve 54 are provided on the first water return pipe 722. The thermostatic actuator 52 consists of a temperature controller and an electric ball valve, and its working principle is: taking winter heating as an example, if the indoor temperature rises and reaches the temperature set by the temperature controller, the opening of the electric ball valve of the thermostatic actuator 52 decreases to maintain the room temperature; if the indoor temperature drops and is lower than the temperature set by the temperature controller, the thermostatic actuator 52 receives the signal from the controller 5, and the opening of the electric ball valve increases.

[0070] As shown in Figure 3 , in this Embodiment 1, a connection box 8 is further provided in the embedded pipe wall 4. The connection box 8 is used to connect the wall water supply pipe 71 and the wall water return pipe 72 between the embedded pipe walls 4 on the same floor of the building. An inlet connection pipe 81 and a return connection pipe 82 are provided in the connection box 8; the inlet 811 of the inlet connection pipe 81 is connected to the second water supply outlet 713 of the wall water supply pipe 71, and the outlet 821 of the return connection pipe 82 is connected to the second water return inlet 723 of the wall water return pipe 72; therefore, only the water supply inlet 711 of the wall water supply pipe 71 and the water return outlet 721 of the wall water return pipe 72 of the control box 7 on one or more embedded pipe walls 4 need to be correspondingly connected to the horizontal water supply main pipe and the horizontal water return main pipe of this floor of the building, and the first water supply inlet 711 of the wall water supply pipe 71 and the first water return outlet 721 of the wall water return pipe 72 of the control box on the remaining embedded pipe walls 4 can be correspondingly connected to the outlet 812 of the inlet connection pipe 81 and the inlet 822 of the return connection pipe 82 of the connection box 8 on the adjacent embedded pipe wall 4. In this Embodiment 1, the outer shell of the connection box 8 is designed as shown in Figure 5 , and the through holes on the side wall of the outer shell of the connection box 8 are used for the external connection of the inlet connection pipe 81 and the return connection pipe 82.

[0071] In this Embodiment 1, indoor temperature sensors and outdoor radiation sensors are arranged on the outer walls of each room. The indoor temperature sensors are used to collect the indoor temperatures of each room, and the outdoor radiation sensors are used to collect the solar radiation intensity of each outer wall in summer. The pipeline flow rate is compensated in advance according to the indoor temperature sensors and outdoor radiation sensors. One wall has one flow rate, achieving precise cooling and saving energy.

[0072] The controller 5 is respectively communicatively connected with the sensors and controllers in the cold heat source 1, the sensors and controllers in the heat preservation water tank 2, the booster pump, flow control valve, heat meter, filter, and stop valve in the household module 3, the thermometer 51, thermal actuator 52, flow meter 53, and stop valve 54 in the control box 7, and the indoor temperature sensors and outdoor radiation sensors on the embedded pipe wall 4, for obtaining the collected data and sending control signals.

[0073] The controller 5 is also communicatively connected with a climate compensator arranged outdoors, for obtaining outdoor meteorological parameters and adjusting each cold heat source according to the outdoor meteorological parameters to compensate the water temperature in the heat preservation water tank.

[0074] The controller 5 can also be communicatively connected with a remote control terminal through a wireless or wired network, sending the collected data to the remote control terminal and receiving the control signals of the remote control terminal.

[0075] In this Embodiment 1, a flow control method in the embedded pipe wall 4 is also provided, which is specifically as follows:

[0076] S11, the user adjusts the indoor preset temperature to t0, or uses the indoor design temperature t0, where the indoor design temperature is the indoor air parameter preset by the system designer according to the annual building energy consumption simulation results.

[0077] S12, the indoor temperature sensor on the embedded pipe wall 4 collects the indoor temperature as t1; the thermometer 51 in the control box 7 in the embedded pipe wall 4 collects the wall water supply temperature as t2 and the wall water return temperature as t3; the outdoor radiation sensor on the embedded pipe wall 4 collects the wall radiation intensity as r1, and sends each collected data to the controller 5;

[0078] S13, the controller 5 determines whether |t0 - t1| is greater than or equal to a set first threshold D1. If it is greater than or equal to, the flow rate in the embedded pipe wall 4 needs to be regulated, and step S14 is executed; if it is less than, the flow rate in the embedded pipe wall 4 does not need to be regulated, and step S15 is executed.

[0079] S14, the controller 5 calculates the actual regulated flow rate Qfn of the embedded pipe wall 4, which is specifically as follows:

[0080] S141. The controller 5 calculates the required flow rate Qn of the embedded pipe wall 4 based on the indoor preset temperature t0, indoor temperature t1, wall supply water temperature t2, and wall return water temperature t3, where Qn = G(t1, t2, t3); here, G(.) is the set calculation function for the required flow rate of a single wall.

[0081]

[0082]

[0083]

[0084] Among them, Q max is the designed maximum flow rate, determined by the system designer based on the annual load simulation (the flow rate under peak load); T max is the calculated peak heating (cooling) capacity, determined by the system designer based on the hourly load simulation throughout the year; T0 is the current instantaneous heating (cooling) capacity; B is a constant taken as 6.7 W / (㎡·K); α B is the influence factor of the ground filling layer, determined by looking up the table; α T is the influence factor of the pipe spacing, determined by looking up the table; α u is the influence factor of the covering layer, determined by looking up the table; α D is the influence factor of the pipe outer diameter, determined by looking up the table; m T is the exponent of the pipe spacing influence factor, m T = 1 - T / 0.075 (T is the pipe spacing, applicable to: 0.050 m ≤ T ≤ 0.375 m); m u is the exponent of the covering layer influence factor m u = 100(0.045 - S), where S is the distance between the embedded pipe layer and the inner surface of the wall; m D is the exponent of the pipe diameter influence factor m D = 250(D - 0.020) (D is the pipe diameter, applicable to: 0.010 m ≤ D ≤ 0.030 m); Δθ H is the logarithmic mean temperature difference

[0085] The above influence factors are determined by the system designer by looking up the table after the system design is completed. The table comes from the Practical Heating and Air Conditioning Design Manual. It can be seen from the above formula that after the system design is completed, the required flow rate Qn of the embedded pipe wall 4 is only related to the indoor temperature t1, wall supply water temperature t2, and wall return water temperature t3.

[0086] S142. Since the annual operating load of the system is determined based on the hourly energy consumption simulation for the whole year, the theoretical energy consumption at each moment includes the solar radiation heat. However, under the summer working conditions, the actual solar radiation situation every day will vary according to the weather changes and the theoretical energy consumption obtained from the simulation. To offset this influence, in this method, feedforward regulation is introduced through an outdoor radiation sensor to pre-compensate the deviation between the actual and theoretical values;

[0087] The controller 5 calculates the radiation compensation flow rate ΔQ = F(r1) of the embedded tube wall 4 according to the solar radiation intensity r1 collected in real time and the solar radiation intensity r0 used in the simulation; where F(.) is the set radiation compensation flow rate calculation function;

[0088] Define γ = (r1 - r0) / r0;

[0089] When -1 < γ ≤ -0.5, ΔQ = -0.2×Qn;

[0090] When -0.5 < γ ≤ 0.5, ΔQ = 0;

[0091] When 0.5 < γ ≤ 1.0, ΔQ = 0.25×Qn;

[0092] When 1.0 < γ, ΔQ = 0.5×Qn;

[0093] S143. The controller 5 calculates the actual regulated flow rate Qfn = Qn + ΔQ of the embedded tube wall 4 according to the required flow rate Qn and the radiation compensation flow rate ΔQ of the embedded tube wall 4;

[0094] Execute step S16.

[0095] S15. The embedded tube wall 4 maintains the current flow rate, that is, the actual regulated flow rate Qfn of the embedded tube wall 4 is the current flow rate; execute step S16.

[0096] S16. In the way of steps S12 - S15, the controller 5 judges each embedded tube wall 4 respectively and obtains the actual regulated flow rate Qfn of each embedded tube wall 4.

[0097] S17. The controller 5 calculates the floor flow rate Qi = ΣQfn of each floor of the building according to the actual regulated flow rate Qfn of each embedded tube wall 4, and calculates the total building flow rate Qo = ΣQi;

[0098] S18. The controller 5 realizes the flow rate regulation in each embedded tube wall 4 according to the actual regulated flow rate Qfn of each embedded tube wall 4, the floor flow rate Qi of each floor of the building, and the total building flow rate Qo.

[0099] In this Embodiment 1, a control method for the cold and heat source 1 is also provided, which is specifically as follows:

[0100] S21. The controller 5 calculates the flow rate according to the pipeline and preset parameters, and sets the set temperature of the water tank to t4.

[0101] S22. The temperature sensor in the heat preservation water tank 2 collects the water tank temperature as t5, and the climate compensator collects the outdoor temperature, and sends each collected data to the controller 5.

[0102] S23. The controller determines whether |t4 - t5| is greater than or equal to the set second threshold D2. If it is greater than or equal to, it means that the cold and heat source 1 needs to be started to generate cold source / heat source, and jumps to step S24; if it is less than, it means that the cold and heat source 1 does not need to be started, and returns to step S22 to continue data collection.

[0103] S24. The controller 5 calculates the cold source / heat source output of the cold and heat source 1 according to the preset parameters and the collected data of the climate compensator.

[0104] Embodiment 2

[0105] In the production process of traditional precast concrete assembled walls, it is a one-piece pouring, so the components in the wall need to be pre-positioned in the mold. In general practice, it is necessary to bind and install structural steel bars before pouring concrete. Before casting in place, the pipeline is tied to the wire mesh in advance and placed into the wall, and then it is poured with cement mortar to form a complete wall. When constructing precast concrete walls, it is necessary to ensure the positions of embedded parts, embedded steel bars and internal insulation layers. Manually tying the pipeline to the wire mesh is time-consuming and laborious, and the pipeline positioning cannot be controlled, and the accuracy is difficult to guarantee. In addition, precast concrete wall panels need to be precast in the factory and assembled on site. Applying the embedded pipe wall technology to precast concrete walls, it is inevitable to consider how to connect the pipe wall with the wall and the wall with the floor at the design stage. And the connection of the pipeline requires a certain accuracy to ensure that when splicing components on site, the pipelines between each component can be accurately connected to avoid errors.

[0106] Therefore, in this embodiment 2, an embedded pipe wall for prefabricated buildings is also provided, an embedded pipe positioner is designed to solve the positioning problem of the embedded pipe in the mold, and a control box and a connection box are designed to solve the connection problem of the pipeline between walls during installation; the entire wall structure is prefabricated and processed in the factory, avoiding wet operations at the construction site; the integral embedded pipe wall of this embodiment greatly reduces the thickness of the traditional embedded pipe wall and increases the indoor usable area in a different direction.

[0107] As Figure 6 shown, an embedded pipe wall for prefabricated buildings in this embodiment 2 can be used in the energy-saving system in Embodiment 1. A control box 7, a connection box 8 and an embedded pipe 9 are arranged in the embedded pipe wall 4.

[0108] The control box 7 is provided with a wall water supply pipe 71 and a wall water return pipe 72; the connection box 8 is provided with a water inlet connection pipe 81 and a water return connection pipe 82; the control box 7 and the connection box 8 are connected through a water supply branch pipe and a water return branch pipe.

[0109] As shown in Figure 6 and Figure 3 shown, through holes are formed in the side wall of the outer shell 43 of the embedded pipe wall 4 for the outward connection of the second water supply outlet 713 of the wall water supply pipe 71 and the second water return inlet 723 of the wall water return pipe 72, and for the outward connection of the outlet 821 of the water return connection pipe 82 and the inlet 811 of the water inlet connection pipe 81.

[0110] As shown in Figure 6 and Figure 3 shown, the water supply inlet 711 of the wall water supply pipe 71 is connected to the outlet 812 of the water inlet connection pipe 81 of the connection box 8 through a water supply branch pipe; the wall water supply pipe 71 is connected to the water inlet of the embedded pipe 9 through a first water supply pipe 712; the water return outlet 721 of the wall water return pipe 72 is connected to the inlet 822 of the water return connection pipe 82 of the connection box 8 through a water return branch pipe; the wall water return pipe 72 is connected to the water outlet of the embedded pipe 9 through a first water return pipe 722. In the second embodiment, the outer shell of the control box 7 is designed as shown in Figure 4 shown, and the through holes in the bottom wall and the side wall of the outer shell of the control box 7 are used for the outward connection of the wall water supply pipe 71 and the wall water return pipe 72. In the second embodiment, the outer shell of the connection box 8 is designed as shown in Figure 5 shown, and the through holes in the side wall of the outer shell of the connection box 8 are used for the outward connection of the water inlet connection pipe 81 and the water return connection pipe 82.

[0111] As shown in Figure 3 shown, a thermometer 51, a thermal actuator 52, and a flow meter 53 are provided on the first water supply pipe 712; a thermometer 51 and a stop valve 54 are provided on the first water return pipe 722. The thermal actuator 52 is composed of a temperature controller, a valve actuator, and a valve. Its working principle is: if the indoor temperature rises and reaches the temperature set by the temperature controller, the positive thermistor in the thermal actuator 52 starts to work, heating the thermal expansion device to close the valve; if the indoor temperature drops and is lower than the temperature set by the temperature controller, the temperature controller disconnects, the thermal actuator 52 cools down, and the expansion device contracts to open the valve.

[0112] As shown in Figure 7As shown, the embedded pipe 9 is fixedly connected to the vertical structural steel bars 42 of the embedded pipe wall 4 through the embedded pipe locator 41. The embedded pipe locator 41 includes: a positioning rod 411, an embedded pipe positioning member 412, and a connecting member 413. The embedded pipe positioning member 412 is used to fix the embedded pipe 9, the positioning rod 411 is used to fix the embedded pipe positioning member 412, and the positioning rod 411 is fixedly connected to the vertical structural steel bars 42 through the connecting member 413.

[0113] As shown by Figure 8 shown, the connecting member 413 includes a connecting ring 4131 and a connecting rod 4132; the connecting ring 4131 is used to be sleeved on the vertical structural steel bars 42, and the connecting rod 4132 is used to be inserted into the positioning rod 411.

[0114] As shown by Figure 9 and Figure 10 shown, the embedded pipe positioning member 412 includes a positioning ring 4121 and an opening ring 4122. The positioning ring 4121 is used to be sleeved on the positioning rod 411, and a telescopic protrusion structure is provided inside the positioning ring 4121. The opening ring 4122 is used to clamp the embedded pipe 9. In Embodiment 2, as shown by Figure 9 and Figure 10 shown are two specifications of the embedded pipe positioning members 412, and the difference lies in the different circumferences of the opening rings 4122, which are used to clamp the embedded pipes 9 in different directions.

[0115] As shown by Figure 11 shown, a chute 4111 is provided on the positioning rod 411 along the rod length direction; positioning holes 4112 are also provided on the positioning rod 411; the convex blocks on the inner wall of the positioning ring 4121 of the embedded pipe positioning member 412 slide on the positioning rod 411 along the chute 4111, and when sliding to the corresponding positioning holes 4112, the telescopic protrusion is inserted into the positioning holes 4112, and the positioning ring 4121 and the positioning rod 411 are fixedly connected through the telescopic protrusion and the positioning holes 4112.

[0116] The protrusion is hemispherical. The protrusion is stuck in the positioning hole 4112 instead of being locked in the positioning hole 4112. Pushing it forcefully will cause it to disengage from the previous positioning hole 4112 until it is pushed into the target positioning hole 4112. Since the embedded pipe 9 actually does not have much force in the left - right direction, the positioning locking force between the protrusion and the positioning hole 4112 is not very large.

[0117] The construction process of an embedded pipe wall for an assembled building in Embodiment 2 is as follows:

[0118] S1, determine the structure, pipe diameter, spacing, and layout method of the embedded pipe 9;

[0119] S2, determine the positions of the control box 7, the connection box 8, the water supply branch pipe and the return branch pipe according to the architectural design drawings, and draw the construction drawings;

[0120] S3, fix the control box 7 and the connection box 8 to the corresponding positions of the mold according to the drawing;

[0121] S4, insert the positioning ring 4121 of the corresponding specification of the embedded tube positioning member 412 into the corresponding position of the positioning rod 411. During installation, the protrusion on the inner wall of the positioning ring 4121 slides on the positioning rod 411 along the slide groove 4111 on the positioning rod 411 and slides to the corresponding positioning hole 4112 on the positioning rod 411, and is fixedly connected at the corresponding positioning hole 4112 through the retractable protrusion;

[0122] S5, break the connecting rod 4132 of the connecting member 413 apart from the middle seam, and insert the connecting ring 4131 of the connecting member 413 into the vertical structural steel bar 42;

[0123] S6, inserting the end of the connecting rod 4132 of the connecting member 413 into the end of the positioning rod 411 installed in step S4, and ensuring that the slots of the two ends are aligned;

[0124] S7, all the positioning rods 411, the embedded pipe positioning members 412, and the connecting members 413 are installed using the above method;

[0125] S8, after the embedded tube positioner 41 is installed, the embedded tube 9 is inserted into the open ring 4122 of the embedded tube positioner 412 according to the drawing requirements and fixed;

[0126] S9, connect the water inlet end and the water outlet end of the embedded pipe 9 to the first water supply pipe 712 of the wall water supply pipe 71 of the control box 7 and the first water return pipe 722 of the wall water return pipe 72 respectively;

[0127] S10, connect the water supply inlet 711 of the wall water supply pipe 71 of the control box 7 to the outlet 812 of the water inlet connecting pipe 81 of the connection box 8 through the water supply branch pipe; connect the return water outlet 721 of the wall return water pipe 72 of the control box 7 to the inlet 822 of the return water connecting pipe 82 of the connection box 8 through the return water branch pipe;

[0128] S11, through the through holes on the two side walls of the outer shell 43 of the embedded pipe wall 4, the second water supply outlet 713 of the wall water supply pipe 71 of the control box 7 and the second water return inlet 723 of the wall return pipe 72 are passed out, as well as the inlet 811 of the water inlet connecting pipe 81 and the outlet 821 of the return water connecting pipe 82 of the connecting box 8 are passed out.

[0129] S12. Between adjacent embedded pipe walls 4, the second water supply outlet 713 of the wall water supply pipe 71 and the second water return inlet 723 of the wall water return pipe 72 of the control box 7 are respectively and correspondingly connected to the inlet 811 of the water inlet connecting pipe 81 and the outlet 821 of the water return connecting pipe 82 in the connection box 8 within the adjacent embedded pipe wall 4.

[0130] Embodiment 2 of the present invention provides an embedded pipe wall for an assembled building. By designing an embedded pipe locator, the positioning problem of the embedded pipe in the mold is solved; the entire wall structure is prefabricated and processed in the factory, avoiding wet operations at the construction site. A control box and a connection box are designed in the embedded pipe wall to solve the construction positioning problem and the pipeline connection problem derived from the combination of the embedded pipe wall technology and the assembled precast concrete wall technology. Structurally, the control box can accurately position the ends of the embedded pipes during construction and accurately align the adjacent two walls during on-site installation. In addition, it can accommodate and protect devices such as sensors, facilitating later maintenance. The design of the connection box solves the positioning problem of the embedded pipes during construction and provides an operating space for the fusion connection of the pipes between adjacent walls during installation. In the embedded pipe wall of Embodiment 2, an embedded pipe is laid. By inputting circulating hot water or circulating cold water into the embedded pipe, the wall can be heated or cooled, thereby realizing temperature control in the room. An actuator and a sensor are integrated in the control box of Embodiment 2 to control the input and output of the embedded pipes in the embedded pipe wall, enabling flow control and temperature monitoring of a single wall, and thus realizing temperature control of a single wall. The integrated embedded pipe wall of Embodiment 2 greatly reduces the thickness of the traditional embedded pipe wall, increasing the indoor usable area in a different way. The embedded pipe locator in Embodiment 2 all adopts tool-free quick connection, which simplifies the installation process while ensuring the installation accuracy. The embedded pipe locator of Embodiment 2 adopts multiple anti-fooling designs, avoiding the possibility of some incorrect operations during the installation process, reducing the alignment time, and improving the installation efficiency.

[0131] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An energy-saving system for an embedded pipe wall in prefabricated buildings, characterized in that include: Cold and hot sources (1), heat preservation water tank (2), household module (3), embedded pipe wall (4), controller (5); The cold and hot sources (1) are used to provide a cold source and a hot source to the thermal insulation water tank (2), so as to heat or cool the circulating water in the thermal insulation water tank (2); Each floor of the building is provided with an entry module (3); the entry module (3) is provided with an entry water supply pipe (31) and an entry water return pipe (32); the water supply inlet (311) of the entry water supply pipe (31) is connected to the water outlet of the thermal insulation water tank (2); the entry water supply pipe (31) is connected to the horizontal water supply main pipe of each floor of the building through a horizontal water supply pipe (312) for conveying circulating water to the horizontal water supply main pipe of each floor of the building; the horizontal water return main pipe of each floor of the building is connected to the entry water return pipe (32) through a horizontal water return pipe (322); the water return outlet (321) of the entry water return pipe (32) is connected to the water return port of the thermal insulation water tank (2) for returning circulating water to the thermal insulation water tank (2); the entry module (3) is used to control the input and output of circulating water on each floor of the building; The embedded pipe wall (4) is used to form the exterior wall of a building. The embedded pipe wall (4) is provided with a control box (7) and an embedded pipe (9) is laid therein; the control box (7) is provided with a wall water supply pipe (71) and a wall water return pipe (72); the water supply inlet (711) of the wall water supply pipe (71) is connected to the horizontal water supply main pipe of each floor of the building, and the wall water supply pipe (71) is connected to the water inlet of the embedded pipe (9) through a first water supply pipe (712); the water return outlet (721) of the wall water return pipe (72) is connected to the horizontal water return main pipe of each floor of the building, and the wall water return pipe (72) is connected to the water outlet of the embedded pipe (9) through a first water return pipe (722); the control box (7) is used to control the input and output of circulating water in the embedded pipe (9); The controller (5) is respectively connected to the cold and hot sources (1), the heat preservation water tank (2), the household module (3), and the embedded pipe wall (4) for communication, and is used to receive collection signals or send control signals; The embedded pipe wall (4) is also provided with a connection box (8); the connection box (8) is provided with a water inlet connection pipe (81) and a water return connection pipe (82); the inlet (811) of the water inlet connection pipe (81) is connected to the second water supply outlet (713) of the wall water supply pipe (71), and the outlet (821) of the water return connection pipe (82) is connected to the second water return inlet (723) of the wall water return pipe (72); The connection box (8) is used to connect the wall water supply pipe (71) and the wall water return pipe (72) between adjacent embedded pipe walls (4) on the same floor of a building; the water supply inlet (711) of the wall water supply pipe (71) and the water return outlet (721) of the wall water return pipe (72) of the control box (7) in one or more embedded pipe walls (4) are correspondingly connected to the horizontal water supply main pipe and the horizontal water return main pipe of the building on this floor, and the first water supply inlet (711) of the wall water supply pipe (71) and the first water return outlet (721) of the wall water return pipe (72) of the control box on the remaining embedded pipe walls (4) are correspondingly connected to the outlet (812) of the water inlet connecting pipe (81) and the inlet (822) of the water return connecting pipe (82) of the connection box (8) on the adjacent embedded pipe wall (4).

2. The energy-saving system for an embedded pipe wall in a prefabricated building according to claim 1, wherein The horizontal water supply pipe (312) of the household module (3) is successively provided with a booster pump, a flow control valve, a heat meter, a filter, and a stop valve along the water supply direction; the horizontal water return pipe (322) of the household module (3) is provided with a stop valve; among them, the booster pump, the flow control valve, the heat meter, the filter, and the stop valve are all communicatively connected to the controller (5).

3. The energy-saving system for an embedded pipe wall in a prefabricated building according to claim 1, wherein The household module (3) is also used to connect the vertical water supply main pipe and the vertical water return main pipe between the upper and lower floors of the building. The water supply inlet (311) of the household water supply pipe (31) and the water return outlet (321) of the household water return pipe (32) of one or more household modules (3) are correspondingly connected to the water outlet and the water return port of the heat preservation water tank (2), and the water supply inlet (311) of the household water supply pipe (31) and the water return outlet (321) of the household water return pipe (32) of the remaining household modules (3) are correspondingly connected to the vertical water supply outlet (313) of the household water supply pipe (31) and the vertical water return inlet (323) of the household water return pipe (32) of the household module (3) on the adjacent floor.

4. The energy-saving system for an embedded pipe wall in a prefabricated building according to claim 1 or 3, characterized in that, The household water supply pipe (31) and the household water return pipe (32) of the household module (3) are also respectively connected to an exhaust pipe, and an automatic air vent is provided on the exhaust pipe.

5. The energy-saving system for an embedded pipe wall in an assembled building according to claim 1, characterized in that, A thermometer (51), a thermostatic actuator (52), and a flow meter (53) are provided on the first water supply pipe (712); a thermometer (51) and a stop valve (54) are provided on the first water return pipe (722); among them, the thermometer (51), the thermostatic actuator (52), the flow meter (53), and the stop valve (54) are all communicatively connected to the controller (5).

6. The energy-saving system for an embedded pipe wall in a prefabricated building according to claim 1, wherein, An indoor temperature sensor is provided on the inner wall of the embedded pipe wall (4) for collecting the indoor temperature; an outdoor radiation sensor is provided on the outer wall of the embedded pipe wall (4) for collecting the solar radiation intensity; the indoor temperature sensor and the outdoor radiation sensor are both communicatively connected to the controller (5).

7. The energy-saving system for an embedded pipe wall in a prefabricated building according to claim 1, characterized in that, The controller (5) is also communicatively connected to a climate compensator arranged outdoors, and the climate compensator is used to obtain the outdoor air temperature, and the controller (5) controls the cold and heat source (1) according to the outdoor air temperature.

8. A built-in pipe wall energy-saving system for prefabricated buildings according to claim 1, characterized in that The controller (5) controls the flow rate in the embedded pipe wall (4) as follows:[[]] S11, the user sets the indoor preset temperature to t0. S12. The indoor temperature sensor installed on the inner wall of the embedded pipe wall (4) collects the indoor temperature as t1; the thermometers 51 installed on the first water supply pipe (712) and the first water return pipe (722) respectively collect the wall water supply temperature as t2 and the wall water return temperature as t3; the outdoor radiation sensor installed on the outer wall of the embedded pipe wall (4) collects the solar radiation intensity as r1; all the collected data are sent to the controller (5). S13. The controller (5) determines whether |t0 - t1| is greater than or equal to the set first threshold D1. If it is greater than or equal to, the flow rate inside the embedded pipe wall (4) is regulated, and step S14 is executed; if it is less than, the flow rate inside the embedded pipe wall (4) is not regulated, and step S15 is executed. S14. The controller (5) calculates the required flow rate Qn = G(t0, t1, t2, t3) of the embedded pipe wall (4) according to the collected indoor preset temperature t0, indoor temperature t1, wall water supply temperature t2, and wall water return temperature t3; where G(.) is the set calculation function for the required flow rate of a single wall. The controller (5) calculates the radiation compensation flow rate ΔQ = F(r1) of the embedded pipe wall (4) according to the collected solar radiation intensity r1; where F(.) is the set calculation function for the radiation compensation flow rate. The controller (5) calculates the actual regulated flow rate Qfn = Qn + ΔQ of the embedded pipe wall (4) according to the required flow rate Qn and the radiation compensation flow rate ΔQ of the embedded pipe wall (4). Execute step S16. S15. The embedded pipe wall (4) maintains the current flow rate, that is, the actual regulated flow rate Qfn of the embedded pipe wall (4) is the current flow rate; execute step S16. S16. In the manner of steps S12 - S15, the controller (5) respectively judges each embedded pipe wall (4) and respectively obtains the actual regulated flow rate Qfn of each embedded pipe wall (4). S17. The controller (5) calculates the floor flow rate Qi = ΣQfn of each floor of the building according to the actual regulated flow rate Qfn of each embedded pipe wall (4), and calculates the total building flow rate Qo = ΣQi. S18. The controller (5) realizes the flow rate regulation inside each embedded pipe wall (4) according to the actual regulated flow rate Qfn of each embedded pipe wall (4), the floor flow rate Qi of each floor of the building, and the total building flow rate Qo.

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