The most prominent feature of dual supply is flexibility, which can be widely applied in various segmented fields and has therefore attracted the attention of many distributors. Below, the editor will analyze the market positioning of the dual supply system from its definition, characteristics, potential, and other aspects.
01 What is dual supply?
Dual supply is not a precise technical concept, but a common term. Narrowly defined, dual supply refers to the use of one or more air source/ground source heat pump hosts as cooling and heating sources to meet the cooling and heating needs of buildings. Generally, fan coil units are used for cooling and ground radiation heating, which is an evolved version of the water system central air conditioning that previously only used fan coil units. The generalized dual supply system integrates auxiliary heat source (boiler), fresh air system, dehumidification and humidification functions, ground auxiliary cooling, intelligent control and other functions.
02 What are the characteristics of dual supply?
The dual supply system is an integrated solution that generally uses an air source heat pump as the main unit and water as the medium to transport cold and heat to each room. It is an HVAC system that can be used in winter, summer, and even throughout the year. But there are also other types of systems, such as using phase change refrigerants at the end of convection, and transferring cold and heat through surface radiation water (commonly known as upper fluorine and lower water), which are also classified as dual supply systems.
The most prominent feature of the dual supply system is flexibility. Due to the use of water as the heat transfer medium, environmental parameters and human experience can be adjusted through various end devices and air treatment equipment by controlling the temperature, flow rate, and temperature difference of water. The control is very flexible, and various types of technical solutions can be constructed, which can be easily integrated with external intelligent or digital control.
The dual supply system is an open system that can integrate air quality control, smart homes, etc. on the basis of heating and cooling. It can also adopt a cloud based intelligent control system to achieve control upgrades, control component expansion, and other functions. It can also input digital information to achieve intelligent operation of digital monitoring.
03 What is the difference between multi split and gas wall mounted boiler underfloor heating system?
Multi connected systems are closed systems, while dual supply systems are open systems. Closed systems are simple and easy to use, but have poor compatibility and high requirements for materials and process systems (manufacturers or brands provide technical references). Open systems have strong compatibility and scalability, and diverse and differentiated solutions require strong system support, including solution and system design, materials and installation processes, automatic and intelligent control, management, and service support.
|
Performance |
Narrowly defined dual supply | Generalized dual supply system | Multi split+boiler |
|
host |
Multiple units can be connected in parallel | Mainly inverter, multiple units can be connected in parallel |
inverter, multiple units can be connected in parallel |
|
Design proposal |
1-2 options | Multiple options | one solution |
| Hydraulic system | One system | Various systems |
— |
| Other heat sources | Can be merged | Can be merged |
Discrete system |
04 What is the development potential of the dual supply system?
The dual supply system has excellent flexibility, and it can be said that wherever multiple units can be used, dual supply can be used as an upgrade solution. This upgrade can be reflected in the following aspects:
- Comfort: The water system can adjust the water temperature and use multiple end forms, resulting in better indoor comfort.
- Health: Water is non-toxic and non flammable, and can be used freely indoors.
- Flexibility: Equipment, terminals, and controls can be flexibly used and matched, and can be used in conjunction with boilers and other equipment.
- Compatibility: Can be used together with air systems, smart homes, and other devices.
- Intelligence: the development structure uses computer and Internet technology to build a service management platform.
- Future development: Materials, equipment, terminals, control, solutions, installation, and after-sales can be deeply integrated to improve industry operational efficiency. Therefore, dual supply has great potential for development, but the advantages of dual supply have not been fully utilized yet, and a lot of development work still needs to be done by industry experts.
- Residential and villa: System integration is the breakthrough point, integrated solutions are the implementation direction, intelligent control is the core, and new functions are the characteristics.
- Office: Improve the comfort of the environment (including reducing noise, etc.) and enhance the level of intelligent control.
- Business: Flexibility, corresponding to personalized customer needs, able to provide different solutions for users to choose from. Dual supply can provide multiple solutions for users to choose from, among which the basic types are: cooling+heating+fresh air; Positive type adds new functions on top of the basic type: dehumidification (humidification), floor cooling; In the future, it will integrate with more products, such as smart homes.
05 What are the difficulties in currently engaging in dual supply?
- The pump head of the host manufacturer’s product is too high, which is not suitable for stable operation of the dual supply system;
- Incomplete and incompatible materials, lack of efficient construction tools;
- Poor quality and irresponsibility of installation personnel;
- The equipment is not suitable for system use (such as frequent shutdown protection, high operating noise, and multiple malfunctions);
- Outdated control, disconnection between equipment and host control, only switch linkage;
- Information interruption makes it difficult to obtain complete upstream information at every stage from design to after-sales, making it impossible to achieve systematic accuracy;
- The prevalence of marketing slogans, false empty promises that do not solve practical problems, and vicious competition;
- Management strategies, with numerous problems and no clear direction;
- Insufficient division of labor and cooperation in the industry, resulting in low efficiency of independent operations by various enterprises.
