In various large-space buildings, the design of air conditioning systems faces numerous challenges. Due to the height and large floor area of such buildings, designing air distribution becomes particularly complex. This is especially true in the summer when delivering cool air is required, and designers often struggle to balance different demands.

 

For these large-space buildings, traditional ducted air conditioning designs primarily offer two approaches.

 

Traditional Approaches

 

1. Vertical Downward Air Distribution：

 

In this approach, ducts are arranged on the roof truss, using a vertical downward air distribution method. The biggest challenge here is balancing hot and cold air delivery. Additionally, the ducts in this design are long and large in cross-section, occupying significant usable space and potentially affecting the building's functional use (such as crane installation in factories) or increasing construction costs (such as raising the building height to accommodate ducts). Moreover, the energy consumption of the air conditioning unit is high, increasing operating costs, and the noise often exceeds permissible levels, requiring sound attenuation measures.

 

2. Horizontal Air Distribution:

 

In this approach, ducts are arranged on the walls of the building, using a horizontal air distribution method. This method also suffers from high fan energy consumption and noise. Additionally, it faces issues like duct concentration, large duct cross-sections, affecting natural light from windows, and conflicts with crane arrangements. When the building width is large, the air conditioning effect in the middle part is often difficult to guarantee. Furthermore, to address the hot and cold air delivery issues, traditional central air conditioning systems sometimes require two sets of ducts, further increasing investment and occupying valuable space.

 

 Innovative Solution

 

To address the specific needs of large-space buildings for air conditioning, our company has developed an integrated BEST remote jet air conditioning unit based on existing ductless induced ventilation technology. This innovative air conditioning unit, combining cooling, heating, ventilation, and heat recovery functions, provides an ideal air conditioning terminal device for large-space buildings with a new concept.

 

Technical Principles

 

The BEST remote jet air conditioning unit delivers air remotely through forced jets, eliminating the need for traditional central air conditioning supply and return air ducts. With specially designed adjustable nozzles for directing airflow, it achieves different airflows for cooling and heating within the same device, fundamentally overcoming the shortcomings of traditional ducted air conditioning. It also facilitates local exhaust and functions as a multi-purpose system, better meeting the special requirements of large-space buildings for air conditioning.

 

The BEST remote jet air conditioning unit is available in horizontal and vertical forms. The horizontal unit uses spherical nozzles, allowing full adjustment of the airflow angle within a 60° range (0-30° up, down, left, and right). This adjustment can be manual or electric. By adjusting the appropriate nozzle angle, issues such as cold air falling too early or hot air not reaching down are resolved, addressing the contradictions between cooling and heating. The wide adjustment range of the airflow angle also compensates for the inaccuracy of airflow organization calculations. For detailed information, refer to our company's "Horizontal Unit Product Manual." The vertical units in the BEST remote jet air conditioning system use specially designed nozzles, achieving different airflow patterns for heating and cooling by adjusting the blade angles to achieve an ideal airflow organization state. The specially designed nozzles offer both electric and remote control adjustment methods.

 

Energy-Saving System Combination Mode

 

The BEST remote jet air conditioning unit, combined with a central air conditioning system with a centralized heat source, forms a split central air conditioning system—centralized heat source (inlet/outlet water), decentralized (on-site) heat exchange. This system combination mode offers energy-saving advantages over ducted air conditioning.

Using a strong convection air delivery method from top to bottom, the system delivers treated air to the working area, preventing air stratification within the entire space. This improves temperature uniformity and reduces energy loss due to roof heat dissipation, making the system more energy-efficient.

 

Its decentralized heat exchange feature makes air conditioning equipment easy to group control and operate, allowing users to flexibly use air conditioning based on production changes, seasonal variations, and work schedules, saving more energy compared to traditional central air conditioning and heating modes.

Since heat exchange occurs on-site, the indoor units (BHV, EHV, EKV) directly