Course design of HVAC

Find the manual or instruction or textbook you study first.

then

1. Start to calculate the load (the steady-state algorithm in winter is instantaneous in summer, so you need to find a lot of data in this place in summer).

2. Calculate the maximum load. (The following situation is based on summer, and it is relatively simple to choose boiler or heat pump system in winter. )

3. Select the system, primary return air and secondary return air? Fan coil unit+independent fresh air? . . . Wait a minute. According to the design system, design temperature and local temperature, draw the enthalpy and humidity diagram. You can find the cooling load, reheating load (if there is a reheating process) and fresh air load by drawing the enthalpy and humidity diagram.

4. Arrange the air duct, conduct hydraulic calculation, and check whether the wind speed meets the specifications indoors.

5. According to the load and hydraulic calculation, choose the equipment: fan coil unit? Air conditioning? Fresh air unit? Select system according to your settings. Select tuyere: diffuser, shutter. . .

6. According to the load and water temperature, calculate the chilled water quantity and cooling water quantity. Chilled water-selection of refrigeration unit, cooling water-cooling tower (also related to local wet bulb temperature and other factors)

6. Layout water pipe system diagram, hydraulic calculation and selection of cooling water pump and chilled water pump.

7. Drawing summary.

As can be seen from steps 4 and 6, the air conditioning system refers to air supply pipeline+equipment+…

Air conditioning water system refers to cooling water and chilled water system. The cooling water is the cooling equipment (sent to the condenser), and the chilled water provides the cooling load (sent to the evaporator).

Do you understand?