This design is the central air conditioning system design of Ningbo new Macao hotel "。 The design object in the project is a star hotel for commercial purposes, mainly providing residential services and catering, games, entertainment, shopping, business center, banquet and conference facilities for tourists。

    The design mainly includes the determination of air conditioning scheme, system load calculation and the type selection design of air conditioning adjustment equipment, and draws the central air conditioning feng shui system layout。 According to the given interior design parameters, building information and other reasonable planning and design air-conditioning system, and the system operation parameters to check calculation, so that it can run effectively。 The design instructions detailed the steps of the design stages, mainly including building air conditioning load calculation, air conditioning system preliminary selection of reasonable zoning, air treatment scheme, air treatment equipment selection, air conditioning water system design, chiller unit and central computer room design, air conditioning system design, air conditioning system noise reduction, damping, anti-corrosion and thermal insulation design, and provide a design calculation process and results。

    The project project is located in Ningbo, and belongs to the second-class civil architecture。 The building has 10 floors, no basement。 The first floor is the hall, room and other work room。 Two to five layers for the multi-functional catering leisure entertainment district, six to eight floors as residential areas, and the tenth floor as the office area; The total area of covers an area of is 1981。85 ㎡。

    The air conditioning system is selected as the fan coil plus independent fresh air system。 According to the comprehensive calculation of all kinds of cooling and heating load produced by different types of rooms in different periods, the maximum cold load of the building in summer is 495, and the total thermal load in winter is 557。 The cold load of the single air conditioning area and the air conditioning room can be used as one of the basis for the selection of the terminal equipment of the area or room air conditioning。

    In the selection of the terminal equipment of the air conditioning, a typical example of the 6 - floor room of the standard floor is taken as an example to illustrate the selection process。 First, according to the requirements of the air parameters of each room, the air handling process of each room is calculated, so as to get a room to meet the comfortable demand of air supply, fresh air quantity and other data, according to these data for equipment selection。 The method of room load calculation, the method of equipment selection and the checking results of equipment selection are recorded in the table for subsequent drawing; In the selection of air-conditioning system equipment such as air conditioning room and fresh air unit, the data obtained according to the above calculation method are selected as reference。 The project eventually selected the gree ZF series fan coil, 123 sets。 Each layer has a set of new air handler, totaling 10 sets; Two screw chillers for the computer room, the model is LSB LG - h325。 the roof cooling tower is set with two sets, the model is fn b - 100; The cooling water pump has a dual purpose, the model is td80 - 32 / g; Chilled water pump for a dual purpose, the model is td80 - 35 / g

    In the pipeline layout, the size of air duct, water pipe and its outlet shall be selected according to the standard of the design manual, and then the approximate pipe diameter shall be selected for each pipe segment according to the flow and flow rate, then check, and select the appropriate pipe diameter, so as to obtain the sectional area size of the pipe。

    Finally, the noise elimination, shock absorption, anti-corrosion and thermal insulation measures of the air conditioning system are also introduced。 The air duct of fresh air unit is equipped with silencing device, and the composite impedance muffler is used in this project。 All equipment should choose low noise type to reduce the noise source。 Water pump, air conditioner, fan and so on shock absorption treatment, in the project all use rubber damping rubber cushion device。 air conditioner, fan inlet set canvas soft air duct。 The water pipe connected with the water pump is equipped with soft joint, namely the rubber soft joint。 The method of shockproof noise elimination of equipment in this design is to connect with canvas soft air duct in the inlet and outlet of air handling unit, connect the import and export of water pump and refrigeration unit with rubber soft joint, and achieve the purpose of isolating source and silencing shock absorption。 In order to reduce the energy loss of pipeline, prevent the surface condensation of air conditioning pipeline and ensure the water temperature of air conditioning equipment and terminal air-conditioning unit, the pipeline and its accessories should also take thermal insulation measures。