Case of Five-Constant Intelligent HVAC System for Luxury Villa in Hangzhou, China

Case Overview

This case is a high-end luxury villa residential project in Hangzhou, China. The owner is a high-net-worth individual with extremely high requirements for living quality. The core demands focus on two key points: first, ultimate tranquility, refusing any interference from equipment operation noise in the living experience; second, simplicity and aesthetics, not wanting too many air outlets on the ceiling to avoid damaging the overall style of the villa's interior decoration.

Combined with the owner's core needs, we have tailor-made an indoor air conditioning system integrating constant temperature, constant humidity, constant oxygen, constant tranquility, constant cleanliness and intelligent remote control. The entire configuration adopts GTGLOBE products, integrating multiple high-end technologies such as geothermal-water heat pump, radiant heat exchange, fresh air dehumidification and silent temperature compensation. It completely solves the pain points of traditional HVAC systems such as cluttered air outlets, obvious noise and insufficient comfort, and finally presents a high-end, quiet and comfortable living space that meets the owner's expectations.

Analysis of the Owner's Core Needs

As a luxury villa owner, the user's requirements for the living environment are far higher than those of ordinary residences. Combined with the villa's layout characteristics and the owner's living habits, the core needs can be summarized into the following 4 points:

●  Priority to tranquility: Refuse equipment operation noise and air flow noise, require an extremely quiet indoor environment to meet the undisturbed needs of daily rest and work;

●  Aesthetic requirements: Minimize the number of air outlets on the ceiling, avoid the clutter caused by exposed air outlets of traditional air conditioners, and fit the high-end decoration style of the villa;

●  Ultimate comfort: Indoor temperature, humidity and air quality need to be stable for a long time, without temperature difference or air blowing feeling, and avoid problems such as dryness, stuffiness and peculiar smell;

●  Intelligent convenience: Realize remote control, so that the indoor HVAC system can be accurately controlled no matter where you are, with convenient and precise operation.

System Design Scheme and Landing Configuration

In response to the owner's core needs, we abandon the traditional HVAC system design idea, adopt the scheme of "GTGLOBE full configuration + five-constant intelligent control + concealed installation", focus on "silence, few air outlets, high comfort and strong intelligence", and match the customized control system according to the characteristics of multiple terminals and multiple areas of the project. The specific landing configuration is as follows:

●  Core Power System: GTGLOBE Geothermal-Water Heat Pump and Auxiliary Stabilization System

The entire system uses GTGLOBE geothermal-water heat pump as the core energy supply unit, relying on the shallow geothermal energy resources in Hangzhou, China to achieve efficient cooling, heating and heat recovery, providing stable power support for the five-constant system; at the same time, it is equipped with two auxiliary systems to further ensure the stable operation of the system:

• GTGLOBE Buffer Tank: Specifically used to stabilize system operation, balance water system pressure, buffer load fluctuations, avoid frequent start-up and shutdown of the geothermal-water heat pump host, which not only improves the stability of system operation, but also extends the service life of the equipment, and reduces noise interference caused by host start-up and shutdown;

• GTGLOBE Zone Pump Station: Adapt to the needs of multiple areas and functional areas of the villa, realize zone temperature control and zone adjustment, avoid energy waste, and ensure the independence and stability of system operation in each area without mutual interference.

●  Temperature Regulation System: Dual Combination of Concealed Radiation + Silent Quick Temperature Adjustment

In order to reduce the number of air outlets on the ceiling, and at the same time achieve ultimate silence and uniform temperature control, we adopt a temperature regulation scheme of "radiant heat exchange as the main method and silent fan coil as the supplement", completely abandoning traditional air conditioning indoor units and exposed air outlets, and taking into account both comfort and aesthetics:

•  Whole-house Concealed Radiation System: The radiation terminals are arranged on the ceiling, wall and floor respectively, and the indoor temperature is adjusted by means of radiant heat exchange, without forced convection air blowing feeling, uniform temperature distribution (indoor temperature difference ≤ ±1℃), no temperature difference dead angle, and no fan operation noise throughout the process, perfectly meeting the owner's demand for silence. All radiation systems adopt GTGLOBE stainless steel insulated manifolds, which are corrosion-resistant, strong in pressure resistance and excellent in thermal insulation performance, which can effectively reduce pipeline energy loss, and at the same time ensure the tightness and stability of long-term system operation, adapting to the high-end quality positioning of the villa;

•  Ultra-thin DC Silent Fan Coil (Emergency Quick Temperature Adjustment): For areas that need rapid temperature adjustment such as kitchens, entrances and audio-visual rooms, GTGLOBE ultra-thin DC silent fan coils are specially arranged as a supplement to the radiation system. The operating noise of this equipment is less than 25dBA (reaching the library-level silent standard), almost imperceptible during operation, and does not damage the whole-house quiet atmosphere; at the same time, the ultra-thin body design can be concealed and installed in the ceiling, without exposure or occupying space, and no additional air outlets on the ceiling are needed, taking into account both aesthetics and rapid temperature adjustment needs, and can quickly adjust the regional temperature in a short time to improve living comfort.

●  Air Quality Regulation System: Fresh Air Dehumidification System with Floor Supply and Ceiling Return

In response to the needs of indoor humidity and cleanliness control, the GTGLOBE fresh air dehumidification integrated system with "floor supply and ceiling return" is adopted, which does not need to arrange too many additional air outlets, and simultaneously realizes the three functions of constant humidity, constant oxygen and constant cleanliness, meeting the core needs of five constants:

•  Constant Humidity Control: The system can automatically adjust the indoor humidity, stabilizing the relative humidity at 40%-60% (the most comfortable humidity range for the human body), avoiding problems such as humidity in the plum rain season and dryness in winter in Hangzhou, China, without the need for additional humidifiers and dehumidifiers, solving humidity problems in an integrated manner;

•  Constant Cleanliness Control: The fresh air system has a filtration accuracy of PM2.5 level, which can effectively filter outdoor dust, pollen, particles and other pollutants. At the same time, through the air flow organization of floor supply and ceiling return, indoor air circulation replacement is realized, avoiding excessive indoor CO₂ and TVOC concentrations, and ensuring indoor air cleanliness;

•  Concealed and Aesthetic: Both air supply and return air outlets adopt concealed design, the floor air supply outlets are integrated with the floor decoration, and the ceiling return air outlets are simple and small, which greatly reduces the number of air outlets on the ceiling, does not damage the overall aesthetics of the villa ceiling, and at the same time, the air flow runs smoothly without air flow noise, meeting the demand for silence.

●  Intelligent Control System: Customized Multi-terminal Central Control System (1 Central Hub + Multiple Zones + Multiple Parameters)

In view of the characteristics of multiple terminals and multiple zones of this project, we have specially customized a GTGLOBE dedicated personalized control system for the owner, adopting the architecture of "1 central control hub + multiple zone terminals + full-dimensional parameter control", which is perfectly adapted to the coordinated operation of the multi-terminal system. It not only meets the needs of precise zone control, but also realizes the unified control of the whole system, and at the same time meets the owner's core demand for remote and convenient operation. The specific functions are as follows:

• Independent Zone Control: Each functional area (bedroom, living room, study, audio-visual room, etc.) is equipped with an independent GTGLOBE thermostat, which can simultaneously control the temperature, humidity, CO₂ concentration and TVOC concentration of the area, accurately matching the use needs of different areas and avoiding energy waste;

• Remote Intelligent Control: The owner can adjust the operation status of the home HVAC system anytime and anywhere through mobile terminals such as mobile phone APP and tablet, including turning on/off the system, adjusting temperature, humidity and fresh air volume, and checking indoor air quality data, etc., even when staying abroad, he can accurately control the home living environment;

• Automatic Linkage Control: The system can automatically adjust the operation status according to indoor and outdoor environmental parameters (temperature, humidity, CO₂, TVOC) without manual intervention, realizing an "unattended" intelligent and comfortable experience, and at the same time further improving the system operation efficiency and saving energy.

Case Landing Effect and Owner's Feedback

●   Landing Effect

After the entire system is put into use, it has fully met the owner's core needs, achieving the simultaneous compliance of five-constant experience, tranquility, aesthetics and intelligence. The specific effects are as follows:

• Tranquility Compliance: The operating noise of the entire system is controlled within 25dBA, the radiation system is silent throughout the process, and the fan coil runs imperceptibly, completely realizing the demand for "constant tranquility". The indoor environment is quiet and undisturbed, fully meeting the owner's core demand for quiet living;

• Aesthetics Satisfaction: Strictly following the owner's requirement of "few air outlets on the ceiling", all terminal equipment and radiation systems are installed in a concealed manner, only a small number of simple return air outlets are retained on the ceiling, completely abandoning the cluttered air outlets of traditional air conditioners, which perfectly integrates with the high-end decoration style of the luxury villa in Hangzhou, China, without cluttered exposed parts, highlighting the texture and style of villa living;

• Five-Constant Experience Compliance: The indoor temperature is stable at 20-26℃ (can be accurately adjusted), the humidity is stable at 40%-60%, the PM2.5 filtration efficiency is ≥99%, the CO₂ concentration is ≤1000ppm, and the TVOC concentration meets the national high-end residential standards, realizing the five-constant core experience of constant temperature, constant humidity, constant oxygen, constant tranquility and constant cleanliness, without air blowing feeling, temperature difference or peculiar smell, completely solving the pain point of insufficient comfort of traditional HVAC systems, and adapting to the high-quality living needs of high-net-worth individuals;

• Convenient Intelligent Control: The customized multi-terminal central control system runs stably, with 1 central control hub linking multiple zones and multiple parameters of the whole house, precise zone control and rapid response to remote adjustment. No matter where the owner is, he can easily control the HVAC system through mobile terminals, with simple and easy operation, realizing an "unattended" intelligent living experience, perfectly meeting the owner's demand for convenience;

• Stable System Operation: The entire set of GTGLOBE products operate in coordination, the geothermal-water heat pump, buffer tank, zone pump station and terminal equipment cooperate tacitly, realizing trouble-free and stable operation, and the energy consumption is lower than that of traditional HVAC systems; at the same time, the application of stainless steel insulated manifolds further improves the tightness and thermal insulation of the system, effectively extending the service life of the equipment, taking into account practicality and economy.

●   Owner's Feedback

After the project was put into use, the owner highly recognized the overall effect, especially meeting his core demands of "ultimate tranquility, simplicity and aesthetics, high comfort and strong intelligence". The owner said that the five-constant system had almost no noise during operation, and the indoor environment remained comfortable and stable all the time, completely getting rid of the troubles of cluttered air outlets, noise interference and uneven humidity of traditional air conditioners; the customized multi-terminal central control system was very convenient, the remote control function met his control needs of frequent travel in many places all year round, and the zone control also realized the rational use of energy.

At the same time, the owner highly evaluated the operation stability of the entire series of GTGLOBE products and the adaptability of the customized system, believing that the entire system not only perfectly matched the high-end positioning of the villa, but also truly realized the living vision of "tranquility, comfort, intelligence and health", completely solving the many concerns about traditional HVAC systems before, and fully meeting his extreme requirements for high-quality living environment.

●   Case Summary

This case of five-constant intelligent HVAC system for luxury villa in Hangzhou, China is guided by the owner's core needs, relying on the entire series of professional GTGLOBE products, and through the customized multi-terminal central control system (one central hub + multiple zones + multiple parameters), it deeply integrates geothermal-water heat pump, concealed radiation system, fresh air dehumidification system and intelligent control technology, successfully realizing the five-constant living experience of constant temperature, constant humidity, constant oxygen, constant tranquility and constant cleanliness.

The core highlight of the case is that it not only meets the owner's extreme requirements for tranquility and aesthetics through concealed installation and silent design, but also realizes the dual improvement of five-constant experience and convenient control through customized intelligent control and full-series high-end configuration, completely solving the many pain points of traditional HVAC systems. It provides a high-quality model of "customization, high-end and intelligence" for the HVAC design of high-end villas in Hangzhou, China, and also verifies the adaptability and reliability of GTGLOBE products in the field of high-end residential buildings.