Operations for the 200,000-Square-Meter Shanxi Hardware and Electromechanical City

For HVAC solutions in large-scale buildings, installation space and the need for increased power capacity are consistently the two primary challenges during project implementation. Issues such as limited land availability, the "cold island effect" caused by clustering units, soaring energy consumption during peak and off-peak loads, and heating capacity degradation in low-temperature conditions frequently complicate centralized energy supply for commercial complexes. In the winter of 2025, at the Hardware and Electromechanical City complex in Taiyuan, Shanxi, BANDON’s compact, full DC inverter heat pumps successfully provided reliable winter heating for a 200,000-square-meter area while occupying a footprint of less than 300 square meters.

1. Large-capacity single units tailored to the load requirements of large-scale complexes.

The project utilizes the BANDON 300HP ultra-large-capacity inverter air-source heat pump, a model that currently leads the industry in single-unit heating capacity. Compared to traditional 60HP ON/OFF units, this model significantly reduces the number of units required and streamlines auxiliary components—such as valves, piping, and filters—thereby substantially lowering the initial investment.

2. The innovative Y-shaped airflow channel design eliminates the "cold island effect" within the unit.

The unit's signature Y-shaped, angled CFD-simulated structure is the core design solution for the dense array's "cold island" issue:

(1) The Y-shaped diagonal layout significantly expands the air intake area, ensuring smooth airflow and substantially reducing the unit's overall air resistance;

(2) Paired with an extended straight-duct EC variable-frequency fan, it creates an upward-jetting exhaust airflow, allowing the cool air generated during heating to rapidly disperse upwards.

(3) During actual long-duration unit temperature testing, the cold island effect did not occur.

3. During the heating season, the system operates at low frequency and high efficiency for 63.9% of the time.

The unit features eight independent hot-standby systems capable of either coordinated full-load operation or independent zone-based operation. Coupled with an all-DC inverter control system, it enables wide-range modulation: during the heating season, the unit operates at low frequency and light load for 63% of the time—matching the building's daily partial-load requirements—thereby significantly reducing power consumption and achieving a COP of up to 4.8.

Over the 150-day heating season, the average electricity consumption—including the water pump—is 31 kWh/m².

The BANDON 300HP compact variable-frequency air-source unit solves space-constraint issues while utilizing a unique structural design to eliminate the "cold island effect." Its expert-level variable-frequency control ensures the unit operates within an ultra-high energy efficiency range for the vast majority of its runtime. Delivering genuine, quantifiable energy savings, the system supports the installation of customer-side electricity metering modules. With its robust clean energy equipment, BANDON secures reliable heating and cooling energy supplies for large-scale projects such as industrial parks, commercial complexes, and expansive residential communities.