The staff dining room of Chengdu Tianxiang Environment Co., Ltd. is about 42m long, about 20m wide, and about 8m high. The heating area is about 840m2, and the daily hot water consumption is 3-5m³. Because the building is a long-history tin building, the heat insulation ability is poor, and it is cold in winter and hot in summer. In the new era and new environment, the unit's leaders attach great importance to improving the dining experience of employees. Still, as a tin building, it is necessary to realise high-power air conditioning or heating HVAC at the specified time to resist the shortcomings of the building itself. After research, Suntrans Control™ designed and built an HVAC system, which requires the system to meet the national HVAC requirements and achieve an excellent dining environment.

（On-site map of the staff canteen）

After repeated arguments, the professional team of Suntrans Control™ has designed a distributed HVAC system with a small area based on "AI + Power Internet of Things + Valley Power Thermal Energy Storage + Valley Electric Cold Water Energy Storage". It uses an FCU installed close to the ground to provide HVAC efficiently, which creates heating in winter and cool in summer. Wind curtain isolation is installed at each gate to stop indoor from outdoor ambient temperature intruding, as well as the humidity, etc.

（Magnetic steam and heat exchange system）

（Cold storage and heat storage system）

The HVAC system takes the "Electromagnetic Coupling HVAC" of Suntrans Control™ as thesuper-efficiency heat source and the "air-cooled chiller" as the high-efficiency cold source. It comprises a heating unit/cooling unit, a water circulation system, a valley power energy storage system, a digital power distribution and control system, and a SuntransPlat cloud platform. When heating, it works together through the "electro-magnetic coupled thermal unit"; when cooling, it works together through the "air-cooled chiller". Under the background of Valley time electricity or Green Electric Power, the system AI serves carefully to provide high-quality heat/cold for the HVAC system. The system fully uses the high tech. of efficiency of "Electromagnetic Coupling HVAC" equipment and "air-cooled chiller", zero-emission, zero pollution, zero space, zero labour and zero inspection characteristics, so the HVAC AI system can run and complete with one click. At the same time, through the IoT, the system ensures that the power supply system is entirely under the control of AI so that the system can operate intelligently, with stable pressure, abundant heat/cold, safe and healthy.

（Hot and cold exchange fan coil）

"Electromagnetic Coupling HVAC" thermal unit (also known as "electromagnetically coupled thermal unit equipment") is independently developed by Suntrans Control™, a fully isolated electric-thermal conversion device of high-efficiency power-magnetic-heat. This equipment has no power quality requirements. Therefore, it can become the most convenient equipment for adequate green energy local consumption and power off-peak flat valley, which can meet the needs of heat, steam and other industries such as medicine, municipal, industry and agriculture.

"Electromagnetic Coupling HVAC" integrates the following functions:

◆Intelligent control: Embedded Suntrans Control™'s original power-type AC zero-point controller completes AI control and authorised control is carried out through the touch screen or App terminal. Customers only need to set the steam (hot water) outlet temperature, pressure, flow rate, etc., and AI, automatic and manual mode can be conveniently switched;

◆Intelligent measurement and control: realise the dynamic online monitoring of the three-phase voltage, current, power, power factor and all pressure, temperature and flow of the equipment;

◆Intelligent protection: realises online protection of overvoltage, overcurrent, Undervoltage speed break, overvoltage protection, temperature, pressure, etc.;

◆Intelligent communication: Adopt wireless WIFI or wired RJ45 interface communication, and remote management control and remote data acquisition can be realised through the terminal.