Trombe wall and suspended ceiling combined radiant heating system

Abstract

The invention discloses a trombe wall combined suspended ceiling radiation heating system which comprises a trombe wall and a room radiation suspended ceiling, the trombe wall is composed of an absorption layer, a built-in capillary channel and a phase change material layer, and the room radiation suspended ceiling is composed of a heat preservation layer, a capillary channel and a radiation layer. In the daytime, the trombe wall absorbs solar radiation and heats water in the capillary channels arranged in the trombe wall, meanwhile, the phase-change materials in the wall store heat energy, hot water in the capillary channels in the trombe wall flows into the capillary channels of the room radiation suspended ceiling, the suspended ceiling layer of the room is heated, a radiation plate is formed, and the heat energy of the room is saved. At night, the phase change material releases heat to heat water in capillary channels in the trombe wall, and the daytime process is repeated. The system depends on natural circulation, does not need a water pump, and is energy-saving and comfortable.

Description

Technical Field

[0001] The invention belongs to the field of energy utilization, and in particular relates to a solar heating system suitable for traditional buildings. Background Art

[0002] As global climate change and energy crisis become increasingly serious, the research and utilization of renewable energy have received extensive attention. As a clean and renewable energy, solar energy has important application value in the field of building energy conservation.

[0003] Traditional trombe walls only convert solar energy into heat for heating, which has problems such as low heat transfer efficiency and inability to meet all-weather heating needs. Therefore, it is of great practical significance and prospect to study the radiant heating technology that combines ceiling radiant heating technology with trombe walls.

[0004] There are several ways to use trombe walls for heating: the first is a partially covered trombe wall structure that combines photovoltaics with thermal catalysis. For example, in patent CN113790492A, this trombe wall includes a high-transmittance glass plate, a metal heat-absorbing plate with a thermal catalyst coating A attached to the outer side, a serpentine tube, and an insulating wall; the high-transmittance glass plate is arranged at an angle, and its upper end is inclined toward the indoor direction; the high-transmittance glass plate is embedded with a number of solar photovoltaic cell modules; the metal heat-absorbing plate and the insulating wall are arranged vertically and adjacently, and an air flow channel is formed between the outer side of the metal heat-absorbing plate and the inner side of the high-transmittance glass plate, and the inner side of the metal heat-absorbing plate is in close contact with the serpentine tube installed in the insulating wall. However, this method will have the problem of low solar energy utilization when used, and the economic benefits are low.

[0005] The second is a breathing phase change trombe wall, as described in patent CN202021846823.3, including a trombe wall body and a glass layer located outside the trombe wall body, a cavity is formed between the glass layer and the trombe wall body; the trombe wall body is composed of a titanium dioxide coating layer, a first phase change layer, a concrete layer, an insulation layer and a second phase change layer from outside to inside; the upper and lower parts of the glass layer are respectively provided with a first window sash, and anchors are distributed on the glass layer, and the anchors pass through the titanium dioxide coating layer and the first phase change layer in turn and are fixed inside the concrete layer; a window is provided in the middle of the trombe wall body, and the upper and lower parts are respectively provided with vents that are connected to the cavity and face their respective first window sashes, and each vent is provided with a second window sash; a fan is installed in the vent on the upper part of the trombe wall body. The problem with this patent is that the fan consumes energy; and in the case of insufficient sunlight, it may cause the problem of high temperature on the upper side of the room and low temperature on the lower side, and the heating effect is not good.

[0006] Trombe wall combined with ceiling radiant heating technology is a solar-based heating technology that does not require additional heat sources such as boilers. During the day, the heat from solar radiation is used to heat the water pipes in the trombe wall, and the heat energy is stored through the phase change material in the trombe wall. When there is no solar radiation at night, the phase change material in the trombe wall is higher than the ambient temperature, and the phase change material undergoes a phase change to release heat, heating the water pipes in the wall, and repeating the daytime process. Water flows from the capillary tubes in the trombe wall to the capillary tubes in the radiant ceiling. Since the water temperature in the capillary tubes in the trombe wall is high and the density is low, the water temperature in the capillary tubes in the radiant ceiling drops after heat dissipation, and the density is high, thus relying on the density difference of water to achieve natural circulation, so the whole process does not require additional mechanical power such as water pumps. Compared with traditional heating technology, trombe wall combined with ceiling radiant heating technology has the advantages of energy saving and comfort. Summary of the invention

[0007] The invention provides a trombe wall combined with a phase-change energy storage ceiling radiation heating system, comprising a trombe wall (1) and a room radiation ceiling (2); the trombe wall (1) comprises an absorption layer (1-1), a capillary channel (1-2) built into the trombe wall and a phase-change material layer (1-3); the phase-change material is a Na2S2O3·5H2O encapsulated capsule; the room radiation ceiling (2) comprises a heat-insulating layer (2-1), a radiation ceiling capillary channel (2-2) and a radiation layer (2-3); the heat-insulating layer material is a polystyrene foam plastic board; the capillary channel (1-2) built into the trombe wall is connected to the radiation ceiling capillary channel (2-2) via a valve (3). BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the patent structure of the present invention.

[0009] Figure 2 This is a schematic diagram of the solar trombe wall structure.

[0010] Attached Figure 1 The label names in the figure are: 1-1. Absorption layer; 1-2. Capillary pipes built into the trombe wall; 1-3. Phase change material layer; 2-1. Insulation layer; 2-2. Capillary pipes of the radiation ceiling; 2-3. Radiant layer; 3. Valve.

[0011] Attached Figure 2 The label names are as follows: 1-1. Absorption layer; 1-2. Capillary channels built into the trombe wall; 1-3. Phase change material layer. DETAILED DESCRIPTION

[0012] The present invention provides a trombe wall combined with a ceiling radiation heating system. When there is solar radiation during the day, the absorption layer (1-1) of the trombe wall (1) absorbs the solar radiation to heat the water in the capillary channel (1-2) built into the trombe wall. At the same time, the heat energy is stored through the phase change material layer (1-3) in the trombe wall (1). The hot water in the water pipe in the trombe wall (1) flows into the capillary channel (2-2) of the room radiation ceiling to heat the ceiling of the room, forming a radiation panel, and heating the room by radiation. When there is no solar radiation at night, the phase change material layer (1-3) of the trombe wall (1) is higher than the ambient temperature, the phase change material undergoes phase change to release heat, and the water in the capillary channel (1-2) built into the trombe wall is heated, and the daytime process is repeated. Water circulates between the capillary tubes in the trombe wall and the capillary tubes in the radiant ceiling. Since the water in the capillary tubes in the trombe wall is hot and has a low density, while the water in the capillary tubes in the radiant ceiling has a lower temperature and a higher density after heat dissipation, the water can circulate naturally by relying on the density difference of water. Therefore, no additional mechanical power such as water pumps is required in the whole process. Compared with traditional heating technology, the trombe wall combined with ceiling radiant heating technology has the advantages of energy saving and comfort.

Claims

1. A trombe wall combined with ceiling radiant heating system, characterized in that: The system consists of a trombe wall (1) and a room radiant ceiling (2).

2. A trombe wall combined with ceiling radiant heating system according to claim 1, characterized in that: The trombe wall (1) is composed of an absorption layer (1-1), a capillary channel (1-2) built into the trombe wall, and a phase change material layer (1-3), wherein the phase change material is encapsulated in Na2S2O3·5H2O capsules.

3. A trombe wall combined with ceiling radiant heating system according to claim 1, characterized in that: The room radiation ceiling (2) is composed of a radiation layer (2-1), a radiation ceiling capillary pipe (2-2) and a thermal insulation layer (2-3), and is attached under the indoor floor.

4. A trombe wall combined with ceiling radiant heating system according to claim 1, characterized in that: The built-in capillary pipe (1-2) of the trombe wall (1) is connected to the capillary pipe (2-2) of the radiation ceiling through a valve (3).

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