November 27, I saw in the construction site of Shenyang Commercial City basement three large water source heat pump host has been erected, the workers are supporting construction. "Only from the economic point of view, Shenyang Commercial City every winter heating, summer cooling due to the use of" water source heat pump + ice storage "technology can save more than 200 million." Shenyang Commercial City Group President and Party Secretary Zhang Dianhua said. Commercial City on the ground six floors, two underground floors, construction area of ​​80,000 square meters. Coupled with the transformation of 31,000 square meters complex, and the proposed 30,000 square meters of shopping malls, a total of 141,000 square meters of commercial buildings need to use conventional coal-fired boiler heating, air conditioning and refrigeration. It is estimated that the commercial city of the use of existing cooling and heating systems, the summer operating costs of about 234.4 million in winter operating costs are 3.5 million yuan, the annual total operating costs of 5.8444 million yuan. According to reports, Commercial City, the "water source heat pump + ice storage system," the introduction of "ice storage" technology, is still the first in the Northeast. The working principle of the whole system is: during the daytime in summer, the double-evaporator heat pump host is cooled or co-cooled with ice storage equipment, and the host can directly exchange heat with the water return evaporator through the water evaporator. At night, ice is made through the ethylene glycol evaporator. Winter need heating, then through the water evaporator for the system heat. It is understood that in December this year, the new heating system test run, the new refrigeration system in April next year formally run. The use of this technology, commercial city summer operation costs need 151.1 million yuan, winter operation costs need 2250000 yuan, a year total cost of operation 376.1 million yuan, each year than the original system saving operation cost of 2,083,000 yuan. After the system is fully operational, the commercial city will not only save 50,000 tons of standard coal each year, but flue gas, particulates, sulfur dioxide and nitrides generated by coal burning will also be reduced to zero.