Design process is: first of all to load calculation, the mall was software are used to calculate the cooling load of each rooms inside the building, to carry on the summary, as the basis of air conditioning equipment type selection, cooling load including: exterior wall caused by cooling load, cooling load caused by the transient heat transfer outside the window, outside the window, shoot the cooling load caused by the heat, cooling load caused by personnel heat dissipation, lighting heat caused by the cooling load and fresh air load.By the calculation to the design of shopping the total cooling load is 1108 kw.

After to load calculation, according to the cooling load of the equipment.Specific selection with cooling and heat sources, air units, fan coil units.Hot and cold source has the following kinds: steam compression machine: (1) piston;(2) the centrifugal;(3) screw.Lithium bromide absorption chillers: (1) steam;(2) hot water operated;(3) direct.In the design of air conditioning cold/heat source system need to follow a unified, choice of two and three principles.A unified, refers to the energy of the end user interests and social and national interests between the harmonious and unified;Two choices refers to the choice of the form of energy, and energy use (i.e. the device type) choice;Three principles, refers to the principle of reasonable utilization of energy resources and reduce the impact on the environment, principle and technical and economic feasible principles.Stations usually should not be less than two.According to the requirement of the design choice of cold and heat source for the two carrier screw water cooled chiller.Air conditioning system based on the function of the construction and classification, business and other large room use full air system.The rest of the little room with fan coil system.Fan coil is an ideal product, at the end of the central air conditioning fan mix indoor air or outdoor air through the table after cooler for cooling or heating into indoor, make indoor air temperature is lower or higher, in order to satisfy people's comfort requirements.Fan coil choose carrier air conditioning fan coil units, the specific selection for 1 FP - 34 type fan coil units.Four carrier air conditioning modular air conditioning box.Two carrier lifting turbine DBFP1.5, 6 row tube rated refrigerating capacity is 19.5 KW, the rated air volume of 2000 m3 / h.

For equipment type selection, started to carry on the drawing, the reasonable configuration of the selected equipment in each floor of the room, and then through the air duct and pipe plate device to connect.Reasonable arrangement of duct pipe, and select the location of the riser.Then according to the figure pipeline hydraulic calculation.Choose the right water pump, cooling tower by hydraulic calculation, expansion tank, etc.

In the environmental treatment and energy saving design, to improve the whole design is basically completed the whole design.

The design for a large shopping malls, large room, each room use time is different also, the maximum load is different, use of the whole air system, fan coil plus fresh air system of air conditioning form, the load calculation, hydraulic calculation, equipment selection and related energy saving measures, basically completed the full sets of air conditioning design.Finish the project design, it's not easy, through the design, basic will own four years I learned knowledge systematically summarized and apply, in the past would be a perfect fusion of the theory and practice of the design, thanks to the help of the teacher and classmates.In the design process before I have strengthened their learned knowledge, for their future study and work laid a good foundation.In the design of the whole process, I found his professional knowledge learning does have some insufficiency, in the process of design, a bit not clear the mind, but also good for the teacher's guidance and hard team members sharing, communication, communication.I was able to successfully complete the graduation design.