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system design: we refer to multiple instances of domestic and foreign, according to the present the system expansion tank.

After the completion of the program is determined, the calculation of resistance of the air system and water system should be started. In the calculation process, the comprehensive economic factors, quality factors to determine the pipe to determine the path of the duct the design process, product samples, get to know today's professional manufacturing level, and follow HVAC design guidelines and regulations, discuss the problems encountered in this design, and lessons learned. According to the design process and calculation results, use the CAD to draw standard layer of air-conditioning system plan, water system, wind system diagram, Axonometric.

Keywords: Hotel air conditioning system; Twin-screw cold water refrigerator; Fan coil; Fresh air system

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