GTGLOBE Full-Series HVAC System Engineering Case for a High-End Residential Project in Ningbo, China

Project Overview

This project is located in Ningbo, China, positioned as a large-scale high-end residential community with a total construction area of 50,000 square meters, covering multiple high-rise residential buildings, supporting commercial spaces and leisure green areas. There are more than 500 households in total, with a large span of unit types, ranging from about 90 square meters for the smallest unit to 1,000 square meters for the largest one. To adapt to the spatial characteristics and living needs of different unit types, the project adopts an independent system design for each household, ensuring that the HVAC system of each household can operate independently and be adjusted autonomously. Ningbo has a subtropical monsoon climate, with hot and humid summers (maximum temperature up to 38℃) and cold and damp winters (minimum temperature down to -5℃). Residents have high requirements for the comfort, energy efficiency, intelligence and functionality of the HVAC system. As a key high-end residential project in Ningbo, this project aims to create a comfortable, energy-saving and convenient living environment for residents, while highlighting the high-quality positioning of the community.

Entrusted by the project owner, GTGLOBE Company is fully responsible for the overall design of the HVAC system for the entire project. The GTGLOBE team conducted in-depth research on local climate characteristics and residents' demand pain points, and tailored a professional HVAC solution for the project. The entire project adopts GTGLOBE supporting products and core system design, which not only meets the daily heating and cooling needs of residents but also takes into account the supply of domestic hot water, realizing the integration of comfort, energy conservation and practicality. Since its completion and commissioning, the system has operated stably and efficiently, winning wide recognition from the owner and residents, and becoming a benchmark case for HVAC systems in large-scale high-end residential projects in Ningbo.

Core Project Requirements

●  Independent System Design for Each Household + Zoned Comfort Temperature Control: The project has a total construction area of 50,000 square meters, covering more than 500 households with unit types ranging from 90 square meters to 1,000 square meters. Based on the spatial differences and living needs of different unit types, the project adopts an independent system design for each household, with each household equipped with an exclusive HVAC system that can be adjusted independently according to residents' own needs; at the same time, it is required that each household's system can achieve precise zoned temperature control internally to ensure uniform temperature in each room, adapt to the spatial layout of different unit types, and meet the differentiated comfort needs of residents in different seasons.

●  Energy Conservation and High Efficiency: Under the background of national energy conservation and emission reduction policies, the project requires the HVAC system to have excellent energy-saving performance. The independent operation design for each household can avoid energy waste, reduce the long-term operation costs of residents and property management, and extend the service life of the host equipment to reduce later maintenance costs.

●  Intelligent and Convenient Operation: As a high-end residential project, it needs to be equipped with an easy-to-operate intelligent control system. Combined with the characteristics of independent operation for each household, residents can easily adjust the indoor temperature and system operation status of their own homes, improving living convenience.

●  Functional Integration: On the basis of meeting heating and cooling needs, the system is required to take into account the supply of domestic hot water to achieve multi-functional integration. The independent supply of domestic hot water for each household not only saves equipment space and reduces investment costs but also meets the personalized hot water use needs of each household.

●  Product Reliability and Durability: All HVAC products and pipelines must meet national quality standards, have good corrosion resistance, pressure resistance and durability, adapt to the subtropical monsoon climate of Ningbo, and at the same time adapt to the long-term use needs of independent operation for each household, ensuring the long-term stable operation of the system for each household.

GTGLOBE HVAC System Design & Product Solution

As the exclusive design unit of the project, GTGLOBE Company, combining the climate characteristics of Ningbo, the functional positioning of the high-end residential project and the core needs of residents, completed the overall design of the HVAC system with professional technology and rich project experience. The entire project adopts high-quality GTGLOBE supporting products, focusing on optimizing system efficiency and functional integration, forming a set of efficient, energy-saving, intelligent and practical HVAC solutions, covering the whole process of system design, product configuration, installation and commissioning.

●  Core System Design Highlights

Aiming at the scale and unit type characteristics of the 50,000-square-meter residential project with more than 500 households (unit types 90-1000 square meters), combined with the core demand of independent system design for each household, the professional design team of GTGLOBE optimized the system layout and operation mode, focusing on improving system efficiency, reducing energy consumption and extending equipment service life. The core design is to configure exclusive terminal systems and supply and return water pipe networks for each household, combined with professional control components, which not only realizes the independent regulation and on-demand operation of each household's independent system but also ensures the efficient coordination of the entire community system. At the same time, the product configuration is optimized according to the size of different unit types, realizing the integration of heating, cooling and domestic hot water supply to adapt to the needs of various unit types.

●  Core Product Configuration

The entire project adopts GTGLOBE supporting products with strict material selection and precise configuration to ensure the stability and efficiency of the system. The specific product configuration is as follows:

• Manifold System: The entire project uniformly adopts brass manifolds. Brass materials have excellent corrosion resistance, thermal conductivity and pressure resistance, which are suitable for the long-term operation needs of the floor heating system. They can effectively avoid pipeline blockage and leakage caused by corrosion, ensure the uniform distribution of water flow in each branch, and lay a foundation for the stable operation of the floor heating system. At the same time, each manifold is equipped with a Differential Pressure-equipped Pump Mixer Set, which is the core component to improve system efficiency. It can automatically adjust water flow and temperature difference according to the actual operation status of the system, optimize heat exchange efficiency, reduce unnecessary energy consumption, and effectively extend the service life of the host equipment, achieving the dual goals of energy conservation and equipment protection.

• Floor Heating Pipes: PEX floor heating pipes are adopted for the floor heating system of the entire project. PEX pipes have the advantages of high temperature resistance, pressure resistance, corrosion resistance and good flexibility, which are suitable for the embedded installation of residential floor heating. They have excellent thermal conductivity, can quickly transfer heat to the indoor space, ensure uniform indoor heating, and have a long service life, which is consistent with the long-term use needs of high-end residences. The pipeline layout is tailored by GTGLOBE according to the structure of each room to ensure reasonable and efficient heat distribution.

• Main Supply and Return Water Pipes: The main supply and return water pipes of the entire HVAC system adopt PEX-AL-PEX aluminum-plastic composite pipes. This type of pipe combines the dual advantages of PEX pipes and aluminum pipes, with good pressure resistance, thermal conductivity and stability, and strong corrosion resistance. It can adapt to the supply and return water needs of large-scale HVAC systems, avoid pipeline deformation and leakage caused by long-term water pressure and temperature changes, and ensure the stable operation of the entire water system. At the same time, the aluminum-plastic composite structure can reduce heat loss during water flow, further improving the energy-saving effect of the system.

• Thermostat Control System: Each room is equipped with a touch LCD thermostat, which has a simple appearance and exquisite design, highly consistent with the high-end decoration style of the residence. The touch operation is convenient and fast, and residents can accurately set the indoor temperature (adjustment range 16℃-30℃), adjust the operation mode of the system, and realize local independent control; the LCD screen can clearly display the current temperature, operation mode and other information, facilitating residents to check and adjust at any time, greatly improving the convenience and comfort of use.

• Domestic Hot Water Integration: The HVAC system designed by GTGLOBE also takes into account the supply of domestic hot water, realizing the integration of heating, cooling and domestic hot water functions. Through reasonable system design, the waste heat generated during the operation of the HVAC system is fully utilized to heat domestic hot water, reducing the energy consumption required for independent hot water supply equipment, saving energy and equipment space, and ensuring the stable supply of domestic hot water for residents to meet their daily living needs.

Project Implementation Effect

Since the completion and commissioning of this project, the entire HVAC system has operated stably and reliably, with each functional module working synergistically, fully meeting the core needs of the project. The specific implementation effects are as follows:

●  Independent Control for Each Household, Adaptation to Various Unit Types, and More Personalized Comfort Experience: There are more than 500 households in the project, with unit types ranging from 90 square meters to 1,000 square meters. Relying on the independent system design for each household, combined with the uniform water distribution of brass manifolds and the intelligent adjustment of Differential Pressure-equipped Pump Mixer Sets, each household can independently adjust the temperature and switch the system according to the size of their own unit and living needs, avoiding energy waste. At the same time, aiming at the spatial layout of different unit types, the zoned temperature control design is optimized, with fast and gentle cooling in summer and mild and comfortable heating in winter, effectively improving the living pain points of hot and humid summers and cold and damp winters in Ningbo, perfectly adapting to various living needs from compact to super-large unit types, and meeting the personalized comfort needs of residents in high-end residences.

●  Significant Energy-Saving Effect and Extended Equipment Service Life: The intelligent adjustment function of the Differential Pressure-equipped Pump Mixer Set, combined with the thermal insulation advantage of PEX-AL-PEX aluminum-plastic composite pipes, greatly improves the system heat exchange efficiency. Compared with traditional HVAC systems, the energy consumption is significantly reduced, and long-term operation can significantly reduce the costs of residents and property management; at the same time, this configuration effectively protects the host equipment, extends its service life, reduces the frequency and cost of later maintenance, and achieves dual improvement of economic benefits and practicality.

●  Convenient and Intelligent Operation, Adapting to High-End Positioning: The touch LCD thermostat is simple to operate and clear to display, allowing residents to easily achieve personalized temperature control, which is consistent with the intelligent and convenient living needs of high-end residences; the system operates stably as a whole with no obvious noise, which does not affect residents' daily life, further highlighting the high-end quality of the community.

●  Integrated Functions and Outstanding Practicality: The integrated design of heating, cooling and domestic hot water functions eliminates the need for additional independent hot water supply equipment, which not only saves equipment investment costs and installation space but also realizes efficient energy utilization, meeting the all-round needs of residents for daily heating, cooling and domestic hot water, and improving living convenience.

●  Strong Product Adaptability and Stable Operation: All GTGLOBE supporting products and pipelines meet national quality standards, adapt to the subtropical monsoon climate of Ningbo, and have excellent corrosion resistance and pressure resistance. Since commissioning, there have been no problems such as pipeline leakage and equipment failure. The system operates stably with high reliability, winning high recognition from the owner and residents.

Project Summary

For the 50,000-square-meter high-end residential project in Ningbo, China, GTGLOBE Company is fully responsible for the overall design and product supporting of the HVAC system. With professional system design, high-quality product configuration and full-process services, it has created an efficient, energy-saving, intelligent and practical HVAC solution for the project, which accurately meets the positioning of high-end residences and the core needs of residents.

The core highlight of this project is that, aiming at the characteristics of more than 500 households and unit types ranging from 90 to 1,000 square meters, it adopts an independent system design mode for each household, tailors the system layout and product configuration for different sizes of unit types, matches the scientific combination of brass manifolds, PEX floor heating pipes and PEX-AL-PEX aluminum-plastic composite pipes, and combines the intelligent adjustment function of Differential Pressure-equipped Pump Mixer Sets. It not only realizes precise temperature control and high energy efficiency for various unit types but also ensures that each household can adjust independently and use on demand, extending the service life of equipment; the configuration of touch LCD thermostats improves the convenience of residents' use, and the integrated domestic hot water design enriches the system functions, achieving multi-dimensional value improvement.

The successful commissioning of this project not only provides replicable and referable benchmark experience for the design and configuration of HVAC systems in large-scale high-end residential projects in Ningbo but also highlights GTGLOBE's professional strength and core advantages in HVAC system design, product supporting and project services. It lays a solid foundation for GTGLOBE to deepen the high-end residential HVAC market in China and expand large-scale community projects, and also provides strong support for promoting energy conservation in high-end residential buildings and improving residents' living quality.