Capillary ceiling radiant air conditioning systems create an energy-efficient, environmentally friendly, and highly comfortable living environment. Suitable temperatures year-round, enjoying the pleasant spring and autumn without the extreme heat or cold of winter and summer. By controlling and regulating room temperature, humidity, and CO2 levels, a healthy and comfortable lifestyle is within your control.
Maintain a constant indoor temperature of 26 degrees Celsius, ending the severe cold and heat; enjoy a year-round humidity of 40-65%, away from the烦恼of the plum rain season.
Replace with new air, making breathing healthier, energy-efficient, and environmentally friendly, achieving 85% building energy saving.
International Standard for Building Thermal Comfort Environment
Indoor Effective Temperature: Heating 20-24°C; Cooling 23-26°C; Cold Wind Sensation DR < 15%; Airflow Speed Below 0.3 m/s
Window cold radiation temperature difference < 10℃; ceiling cold radiation temperature difference < 8℃; ankle to head vertical temperature difference < 3℃; indoor relative humidity 30% to 70%.
Composition of毛细管 ceiling radiant air conditioning system
The毛细管ceiling radiant air conditioning system consists of the following five major systems:
Energy-saving building maintenance structure thermal insulation and heat preservation system
2. High-comfort毛细管网顶棚 radiant cooling and heating system
3. Temperature and humidity control with fresh air system
4. Independent temperature and humidity control intelligent system
5. High-efficiency heating and cooling equipment.
Amongst
Energy-efficient building maintenance structure thermal insulation and heat preservation system
Key contents include: exterior wall insulation, roof insulation, exterior window heat insulation and shading, etc. Based on our engineering experience and relevant standards for building energy conservation, we recommend maintaining the thermal parameters of the structural elements to the following values:
2. High-comfort毛细管网顶棚 radiant cooling and heating system
2.1 Capillary Tube Ceiling Radiant Cooling and Heating System Principle
In nature, the venation of plants and the capillary vessels beneath human skin are natural forms of capillaries. Both are successful examples of regulating the body's temperature and balancing with the surrounding environment through the fluid within the tubes.
Water is an efficient heat transfer medium, with a transfer rate 1,000 times faster than air. The capillary tube radiant cooling and heating system utilizes water as a medium for a new type of radiant terminal system. A grid of 4.3x0.8 mm PPR plastic capillary tubes, spaced 10mm to 30mm apart, mimics the capillaries in the human body, serving to distribute, transport, and collect liquids. The flow rate of the liquid in the grid and within the human capillaries is similar, at 0.05-0.2 m/s, operating silently. It regulates room temperature akin to the capillary vessels in the skin that regulate body temperature, making it an biomimetic, natural energy-saving air conditioning system.
During winter, the capillary tube network circulates water at a lower temperature of 28-30°C, gently radiating heat into the room; during summer, it circulates cooler water at 18-20°C, gently radiating coolness into the room. Due to the large heat exchange area of the capillary mats and the fast heat transfer speed, the thermal transfer efficiency is higher.
Capillary tube radiant heating and cooling systems have been available in HVAC for some time, ranging from high-temperature radiant panels to cold radiation capillary tube technology and electric heating films. However, all these are one-way effects and cannot be used for both winter and summer, necessitating an additional system, thereby increasing investment. As a heat transfer method, radiation has a higher heat transfer efficiency; in the same indoor temperature conditions, the actual perceived temperature is 2℃ to 4℃ higher than that of convection heat transfer, and it is much faster than convection and conduction. Traditional heating systems typically consist of radiators placed under windows for natural air convection or concealed ceiling fan coil units for forced air convection, with relatively high supply water temperatures, resulting in uneven indoor heating and excessive dryness. The application of low-temperature, gentle radiant heating or cooling principles and benefits is quite different. The heating or cooling equipment is installed in the ceiling, occupying no additional space or height, providing constant temperature and humidity, and also saving on operational costs.
2.2 Advantages of毛细管网顶棚 radiant air conditioning system:
High comfort
Cooling and heating are achieved through radiation, resulting in higher comfort levels compared to other terminal forms. Due to the even distribution of closely spaced parallel capillary tubes forming the grille, the heat radiation exchange area is particularly large, ensuring very uniform indoor temperatures. The thermal/radiative surface has minimal temperature distinction. Moreover, the heat exchange between the human body and the space is primarily through radiation, creating a static cooling and naturally warm environment that is extremely comfortable for people, with the body feeling up to 2-3°C warmer than the room temperature. This also helps achieve additional energy savings. Each room features a separate circulation structure, allowing for individual temperature control of each room through the room temperature regulator installed within.
2) Extremely quiet air conditioning system
Compared to traditional fan coil units (which contain moving indoor components like motors and fans, resulting in noise levels of about 35~45dB), the capillary radiant air conditioning system has no indoor moving parts and produces no indoor noise, making it a quiet air conditioning system.
3) No condensate tray, no source of bacterial growth
Capillary mats are installed within suspended ceilings or walls, primarily cooling or heating buildings through radiant heat transfer. Compared to fan coil units, they do not have a condensate system, thus preventing issues like poor drainage and dripping. Additionally, there is no occurrence of bacteria growth in the traditional dripping trays of fan coil units, which can affect indoor hygiene conditions.
4) Significant energy-saving effect
Typically, the summer supply temperature for毛细管 systems is 16-18 degrees Celsius, while the winter supply temperature is 26-32 degrees Celsius. Compared to traditional air conditioning, this results in higher summer supply temperatures and lower winter supply temperatures, leading to significant energy savings.
5) Strong thermal storage capacity
The temperature will not rise (in summer) or drop (in winter) for an extended period during system shutdown or power outages.
6) Strong self-regulating balancing capability
As indoor temperatures rise in summer and the temperature difference between the radiating surface increases, the radiative cooling is enhanced. In winter, as indoor temperatures drop and the temperature difference between the radiating surface increases, the radiative heat is intensified.
7) Capillary tube ends occupy less building net space, saving on building area
Under the ceiling or on the walls of an air-conditioned room, first lay the capillary mat, then apply a 5-10mm thick layer of plaster to form the radiant surface.
8) Capillary layout flexible, easy to install
Due to the light weight of the capillary tube, it offers flexible installation options, such as suspended ceiling plastering, wall plastering, and metal module installation, making the construction process convenient.
3. Temperature and Humidity Control Fresh Air System
To meet the demand for fresh air and to address potential condensation issues on ceilings and floors during cooling, a thorough control of indoor air temperature and humidity is necessary. The ceiling radiant air conditioning system must be supplemented with a temperature and humidity control fresh air system. This system introduces outdoor fresh air and treats it with temperature and humidity control to meet functional and comfort requirements. The air intake of the temperature and humidity control fresh air system is typically located at the building's ground level or lower spaces; it uses the principle of cold air sinking, like a piston, to expel the original air from the building. As the treated air is introduced from below, it forms a fresh air lake, which can be absorbed by the human body more quickly, thus offering significantly better performance than traditional ceiling supply and return air currents.
In our energy-saving building system with constant temperature, humidity, and oxygen levels, during winter, the ceiling radiant air conditioning system primarily considers the users' temperature requirements, allowing for the use of displacement ventilation. However, in summer, due to higher relative humidity, the dew point temperature is significantly above the operational temperature of the ceiling radiant heating and cooling system. Although such weather occurs infrequently and for a short duration, there is a high possibility of condensation on ceilings, as seen in many cold radiation ceiling systems. Therefore, outdoor air cannot be fully utilized for indoor air exchange. Displacement supply air is primarily composed of fresh air that has been purified, disinfected, humidified, or dehumidified and enriched with oxygen, ensuring adequate oxygen levels, fresh air, and moderate humidity inside the building. The amount of displacement supply air is 20-30% of the traditional air conditioning system's airflow. In the temperature and humidity control fresh air system, all ducts are installed within the floor or side walls of the respective floors, neither occupying the ceiling space nor thickening the floor structure layer.
Save substantial space in your building, making your room appear more spacious and grand.
4. Independent Temperature and Humidity Control Intelligent System
To maintain an indoor microclimate that meets comfortable and healthy standards, simply having good air treatment equipment is not enough. Ideal control and regulation of the system operation are required, which necessitates a reliable smart control system to achieve this.
The Rui Mei毛细管网顶棚radiant control system integrates temperature, humidity, CO2, VOC, and PM2.5 monitoring, along with numerous control and alert functions. It manages and controls various devices and valves in real-time to ensure optimal operation, creating an ideal indoor living environment. Additionally, the control system is user-friendly, featuring a one-touch comfort mode setting, allowing for remote control anytime, anywhere. It effortlessly centralizes overall environmental comfort management, as well as independent adjustments for individual rooms and separate controls for corresponding equipment.
Simple and Clear Operation - The operating system features a straightforward and clear interface, easy to learn, and includes child-proof settings to ensure the system operates safely and stably.
5. High-efficiency Cold and Heat Source Equipment
Generally, air-source or ground-source heat pumps are used, as the high energy efficiency ratio of the equipment significantly improves the overall energy-saving of the system.
Capillary tube ceiling radiant air conditioning applicability range:
Suitable for new construction or renovation projects; applicable from frigid regions to tropical areas. Provides high-comfort air conditioning systems for various buildings such as office buildings, maternity centers, villas, apartments, clubs, and more.
