Product Applications                  

• Heating systems in high - rise buildings that require zoning (new construction).
• Heating systems in high - rise buildings that require zoning (reconstruction).
• Central air - conditioning water systems in high - rise buildings that require zoning.
• Heating systems in multi - story buildings located at the end of the heat network, where the pressure difference between the supply and return water is too small to ensure normal flow.
• Multi - story buildings located at the highest point within the same heat network, where the topographic height difference is too large.

1.Direct - connection Heat - supply Pipeline Network

• Direct - connection pipeline network, utilizing existing pressure for energy - saving;
• Without additional equipment like heat exchangers, water tanks, and make - up water devices, saving land and investment.

2.High - efficiency Water Pumps

• Variable - frequency operation;
• High - efficiency hydraulic model optimized by CFD design.

3.High Integration Degree

• Electromechanical integrated design reduces the floor space of the equipment;
• Factory - prefabricated and modularly assembled, saving investment and shortening the cycle.

4.Intelligent Management

• Whole - life - cycle intelligent management, comprehensive energy - flow analysis and full - range energy control;
• Automatic operation, data collection, analysis, and control via the Internet of Things, maximizing energy - saving and reducing operating costs.

5.Low - resistance Valves

• Full - bore non - slamming low - resistance check valves;
• Full - bore quick - closing butterfly valves.

6.Low - resistance Corrosion - resistant Pipelines

• Cut by laser equipment and welded by robots, with smooth ports, low resistance, and reliable welding quality;
• Made of well - known brand pipes or tubes, with anti - rust treatment like passivation and electrolytic polishing to prevent corrosion.

DFGZL Energy - saving and Cost - reducing
With the continuous increase in high - rise buildings in our country, the heating hot - water pressure from municipal and heat - exchange stations often fails to meet the demand. Traditional heating units have complex systems, numerous equipment, high maintenance costs, large initial investments, and occupy a lot of space. In some cases, heat loss during heat exchange occurs, and the heating standards for buildings may not be met. Increasing the heat - exchange area or raising the network pressure would significantly increase investment, but our DFGZL high - rise direct - connection heating unit offers a solution.
This unit combines the high - zone heating system and low - zone heating system in high - rise buildings directly. It overcomes many technical drawbacks of traditional high - rise building heating equipment. Without dedicated high - zone boilers, water tanks, and it directly pressurizes the heat - supply water from coal - fired sources to the high zone, avoiding a large amount of heat loss in the heat - exchanger system. It features a simple structure, low equipment investment, high heat efficiency, and fully automatic operation. This heating system is widely applied in high - rise building heating.

01 High - efficiency Water Pumps The unit can automatically activate pumps for variable - frequency operation based on the system flow demand, making the system more energy - efficient. It has a high - efficiency hydraulic model optimized by CFD (Computational Fluid Dynamics) for hydraulic model optimization. 02 Low - resistance Pipe Valves Full - bore non - slamming low - resistance check valves. Laser - cut materials and robot welding ensure smooth valve ports and low resistance. Full - bore quick - closing butterfly valves. 03 Direct - connection to Heat - supply Company Pipeline Network, Pressure Boosting, Small Footprint Without dedicated boilers, water tanks, heat exchangers, pressure - reducing valves, expansion tanks, and water treatment systems, the system is simple and the investment cost is low. Users can directly use the high - temperature network water for heating, eliminating the heat - exchange process, improving heat - energy utilization, and coal - burning temperature. Equipped with filters to ensure the quality of the supplied water and prevent water - inlet network blockage, thus significantly enhancing the heating effect. The unit operates in a variable - frequency mode, making full use of the external network water pressure, resulting in significant energy savings.

DFGZL High Reliability Sound quality management, after - sales service system, and product craftsmanship 01 High - standard Hardware Coating thickness measurement ensures the equipment is corrosion - resistant and has a long lifespan. The equipped frequency converters feature a high protection level (IP55), are dust - proof, have thickened PCB coatings, and exhibit high reliability. Equipped with imported brand components. Equipped with imported brand programmable logic controllers. 02 Sound Quality Management and After - sales Service System The company has an IoT - Net certificate and a CTEAS certificate. Based on its quality management and after - sales service system, the company conducts full - process quality control over four major processes: resource management, management responsibility, product realization, and measurement, analysis, and improvement. It promotes product standardization and institutionalization, ensuring product reliability and the timeliness of after - sales service. 03 Mature Product Craftsmanship Manufactured using robots and numerically - controlled equipment, surpassing traditional welding, cutting, and bending techniques, ensuring product quality consistency and stability.

Working Environment

• Power supply: 380V×(100±5)%, three - phase five - wire system;
• Ambient temperature: 4°C ~ +40°C (appropriate measures must be taken if beyond this range);
• Relative air humidity: 20% ~ 90% (at 20°C), no condensation;
• Installation site should be free of conductive dust, gases that can corrode metals and damage insulation, and areas with explosion hazards;
• Altitude should not exceed 1000m. When it exceeds, control components should be adjusted accordingly.

Selection of the Unit

Selection of the Pressure - boosting Circulating Pump:

• Head of the Pressure - boosting Pump (m)
  H=Hj−Hw+Hn+Ha
  • Hj: Geometric height from the pump to the top of the system (m)
  • Hw: Resistance loss of the indoor system (m)
  • Hn: Dynamic water - line height of the heat - network supply water at the pump location (m)
  • Ha: Safety margin, can be taken as [a specific value, which is not given in the original content] (m)
• Flow Rate of the Pressure - boosting Pump (m3/h)
  G=kρ(t1−t2)0.86Q
  • k: Additional coefficient, can be taken as 1.1
  • Q: Heat load of the high - zone system (W)
  • t1: Supply water temperature (°C)
  • t2: Return water temperature (°C)
  • ρ: Density of the supply water (kg/m3)