The air-conditioning water system is a dual-control primary pump flow system. The water system is divided into five parts according to the function of the building: the fan coil part of the store (1st floor and 14 floors above ground), and the new fan section of the store (1st floor and 14 above ground) Layer), dining section (56 floors), office part of the podium (17 floors), office part of the main building (828 floors). The opening and closing of the system and the transition during the transition season are performed by manual valves located in the collection/distributor in the equipment room. The air conditioning method in the shopping mall section is the fan coil + fresh air system, and the exhaust system is considered. Due to the large heat output of the shopping mall, in order to save energy, a heat transfer device for sending and exhausting runners is arranged at the fresh air treatment machine for heat recovery. During the transition season, the fresh air system does not pass through the bypass valve of the heat exchanger, reducing the filtration load, and the heat recovery device is located in the air-conditioned machine room in the surrounding area of ​​the building. The office part adopts fan coil + fresh air system. The reason why the mall adopts the fan coil system is because of the height limitation of the building layer. In order to ensure the high net space of the business and the requirements of the builder, the general air-type central air conditioning system is not used, but the fan coil water system is adopted. . It turns out that such a large shopping mall is not suitable for this type of air conditioning. Timing Belt pulley transmission is a transmission method in which corresponding timing belt pulleys are distributed on a closed, annular belt according to an equal-spaced sawtooth structure. Therefore, during transmission, the meshing degree of the timing belt teeth and the tooth groove of the timing belt pulley will directly affect the smooth progress of the transmission movement and the magnitude of the transmission power. Timing belt pulley, as the power source of meshing transmission, has various technical advantages of important gear mechanism transmission, chain transmission and flat belt transmission. Timing Belt Pulley, Ribbed Belt Pulley, Transmission Pulley, V-Belt Pulley, Multi-Ribbed Wedge Pulley, AT Type Timing Belt Pulley, Aluminum Belt Pulley, Alloy Steel Timing Belt Pulley Timing pulley, Synchronous pulley, Synchronous belt pulley Huatao Industrial Belt Co., Ltd. , https://www.huataobelt.com