It consists of an air-cooled modular chiller, a chilled water pump, a fresh air unit and a fan coil unit. Considering the coefficient of simultaneous use, if you use the electrical exhibition hall during the day and usually use the bath center at night, you can choose three RWC-454 screw freezers with a total cooling capacity of 1 170000 kcal/hour and a total power of 429kw. The main engine is connected with the indoor air conditioning terminal (fan coil unit and fresh air unit) through a pipeline system, and the working medium in the pipeline is chilled water. The chilled water pipe can be made of seamless steel pipe and galvanized steel pipe, and the condensed water pipe can be made of galvanized steel pipe or PPR pipe. Condensate pipes drain into the nearby sewer system.