Shenzhen Metro Line 12, known as the "King of transfer", has been officially put into operation. At the same time, Gree Electric Appliances is responsible for the efficient intelligent environmental control system project in Shenzhen Metro Line 12 officially put into use.

(Schematic diagram of Shenzhen Metro Line 12)

It is reported that Shenzhen Metro Line 12 connecting Qianhai, Nanshan, Baoan, Xixiang and other areas, according to the forecast, the maximum daily passenger flow in the future will exceed one million people. Urban rail transit, as a public transport infrastructure with large capacity and high frequency of use, has a large demand for overall energy consumption. The application of energy-saving technology of intelligent environmental control system is expected to save 17.36 million kW·h of electricity, 13,636 tons of carbon emission and 13.71 million yuan of cost for the whole line every year, which can effectively reduce energy consumption. It is of great significance to the development of green transportation.

Quality Reliability—Gree Core Technology Empowers Shenzhen Railway Line 12

In 2020, Gree Electric Appliances won the bid for the efficient intelligent environmental control system project of Shenzhen Metro Line 12. After project approval, design deepening, factory acceptance, fine debugging and other links, Gree Electric Appliances has provided a stable, reliable, comfortable and energy-saving efficient intelligent environmental control scheme for urban railway construction. According to the data, it is expected that the average annual comprehensive refrigeration energy efficiency of the refrigeration room will reach more than 5.0, and the average annual comprehensive refrigeration energy efficiency of the air-conditioning system will reach more than 3.0.

As the first full-line intelligent environmental control system construction project in China, Shenzhen Metro Line 12 adopts Gree high-efficiency frequency conversion equipment in all working conditions, including permanent magnet synchronous frequency conversion direct drive chiller, fully frequency conversion air conditioning water pump, permanent magnet direct drive cooling tower. Meanwhile, EC fans are used in 458 air handling equipment throughout the line. The BIM technology is used to deepen the design of equipment selection, room layout, system pipeline and energy saving control, realize factory prefabrication of pipeline and assembly construction on installation site, reduce the resistance of pipe network, and truly achieve zero consumables and zero loss.

In addition, the control system of the intelligent environmental control system can realize the active optimization of each unit operating condition through the global active optimization algorithm, so as to maintain the optimal state of transmission and distribution efficiency and system energy efficiency. At the same time, this project is the first time to directly deploy the system on the intelligent cloud platform, real-time monitoring and analysis of equipment operation and other data, and provide online cloud diagnosis, energy efficiency optimization and intelligent operation and maintenance services.

Strength certification—Gree Central Air Conditioner Helps Urban Traffic

As a leading enterprise in the HVAC industry, Gree central air conditioning has won the favor of the society with its efficient and stable system. According to the Grassroots Research Report on China's Central Air Conditioning Industry in the first half of 2022 released by i Media, Gree central air conditioning is the only brand with a sales scale of more than 10 billion yuan in the first half of this year, leading the market as the first in the industry.

In early 2021, Gree won the bid for the renovation project of chiller of Shanghai Metro Line 2, providing professional solutions for Shanghai rail transit construction; In June 2022, when Beijing Fengtai Station was officially put into operation, Gree Electric Appliances, as the exclusive supplier of water chillers in Fengtai Station, provided 8 maglev centrifugal units, providing strong technical support for the operation of Fengtai Station. Up to now, Gree's central air conditioning system has served more than 120 large railway transportation hubs and more than 100 subway lines nationwide, providing technical strength for the high-quality development of urban rail transit.

Urban transportation is the thread connecting every corner of the city, and it is also an important engine driving urban economic development. Gree Electric Appliances has always taken social responsibility as its corporate responsibility, adhered to independent innovation, and provided technical support for the construction of urban rail transit with its excellent technical strength and high-quality product quality. In the future, Gree will continue to adhere to the road of innovation, constantly improve its own technology, and escort China's "acceleration" with its own strength!

近日，有着“换乘大王”之称的深圳地铁12号线正式开通运营。与此同时，由格力电器负责的高效智能环控系统项目也在深圳地铁12号线正式投入使用。

（深圳地铁12号线平面示意图）

据悉，深圳地铁12号线串起前海、南山、宝安、西乡等区域，根据预测，未来单日最大客流量可突破百万人次。城市轨道交通作为大容量、使用频率高的公共交通基础设施，整体能耗需求量大，而智能环控系统节能技术的应用，预计每年可为全线节省用电1736万kW·h，碳减排13636吨，节约费用1371万元，真正做到有效的降低能源消耗，对绿色交通的发展有重要的意义。

品质信赖 格力核心科技赋能深铁12号线

2020年，格力电器成功中标深圳地铁12号线高效智能环控系统项目，经过项目立项、深化设计、出厂验收、精细化调试等多个环节，为城市铁路建设提供稳定可靠、舒适节能的高效智能环控方案。根据数据显示，预期制冷机房年均综合制冷能效达5.0以上，空调系统年均综合制冷能效达3.0以上。

作为国内首批全线智能环控系统建设项目，深圳地铁12号线采用格力全工况高效变频设备，包括永磁同步变频直驱冷水机组、全变频空调水泵、永磁直驱冷却塔，同时全线458台空气处理设备均采用EC风机。通过BIM技术对设备选型、机房布置、系统管线和节能控制进行深化设计，实现管道工厂化预制、安装现场装配式施工，降低管网阻力，真正做到零耗材、零损失。

除此以外，智能环控系统的控制系统可以通过全局主动寻优算法，实现各机组运行工况主动寻优，达到输配效率与系统能效保持在最佳状态。同时，该项目更是首次实现将系统直接部署在智能化云平台上，对设备运行等数据实时监测、分析，并提供线上云诊断、能效优化及智慧运维服务。

实力认证 格力中央空调助力城市交通

作为暖通行业的领头企业，格力中央空调凭借高效、稳定系统，赢得了社会的青睐。据i传媒发布的《2022上半年中国中央空调行业草根调研报告》数据显示，格力中央空调是上半年唯一突破100亿销售规模的品牌，以行业第一的身份领跑市场。

2021年初，格力中央空调成功中标上海地铁2号线的冷水机组更新改造项目，为上海轨道交通建设提供专业化解决方案；2022年6月，随着北京丰台站正式开通运行，格力电器作为丰台站冷水机组的独家供应商，提供了8台磁悬浮离心机组，为丰台站通车提供了强有力的技术支持。截止目前，格力中央空调系统已服务全国120多个大型铁路交通枢纽站，100多条地铁线路，为城市轨道交通的高质量发展提供技术力量。