On December 25, 2017, State Grid Tendering and Bidding Management Center and State Grid Investment Co., Ltd. released the results of bidding for transformers, combined electrical appliances and switchgear for the new airport transmission and transformation equipment of Beijing Daxing Power Supply Company in 2017. Among them, the total number of transformers Two packages, the successful man: Jinan Siemens Transformer Co., Ltd. and Zhongshan ABB Transformer Co., Ltd.; two sets of combined electrical appliances, the successful bidder: Shanghai Siyuan High Voltage Switchgear Co., Ltd. and ABB Xiamen High Voltage Switchgear; switch cabinet four bags, the successful bidder: Shandong Taikai Complete sets of Electric Co., Ltd. (two packs), Shanghai Siemens Switch Co., Ltd., Tianjin Ping Gao Intelligent Electric Co., Ltd.
After the announcement of the above bidding results, an article entitled "China's equipment actually could not afford to provide a transformer at a new airport in Beijing" began to spread online and attracted many people to participate in the discussion.
January 5, 2018, Dong Mingzhu announced from media: Recently, with its own independent research and development of high efficiency permanent magnet synchronous centrifugal ice storage double cooling unit and base load inverter unit, beat many internationally renowned brand of air-conditioning, won the bid in Beijing Daxing International Airport terminal and ancillary services air conditioning projects. Dong Mingzhu from the media specifically stressed: all terminals Oh!
Take a look at Gree successful bidder introduction:
The project uses Gree efficient permanent magnet synchronous frequency conversion Centrifugal Centrifugal Base Chiller and ice storage double working condition unit to provide day-to-day air-conditioning refrigeration and night ice storage function for Beijing Daxing International Airport.
The two technologies were identified as "world-leading" by the expert group in December 2011 and March 2016, respectively. The units achieved a qualitative breakthrough in energy-saving and reliability.
The winning centrifuge all adopts high-speed permanent magnet synchronous motor direct drive two-stage impeller frequency conversion drive technology, the refrigeration is more rapid and efficient than ordinary centrifugal chillers more than 40% energy saving;
The COP of ice storage double working condition chiller series is up to 4.59 at-6 ℃ and COP up to 6.6 under air-conditioning condition, exceeding national level energy efficiency, IPLV up to 11.17 and overall working condition comprehensive energy efficiency by 30% Above, energy-saving effect is more significant, wider operating range.
The project uses a total of 17 Gree permanent magnet synchronous variable frequency centrifuge units, of which: 8 2000RT double working condition ice storage frequency conversion unit, 6 2000RT base load frequency conversion unit, 3 600RT base load frequency conversion unit, with a total installed capacity of up to 29,800RT.