The invention relates to a design method of a medium-temperature cold water central air-conditioning
system, belongs to the technical field of energy-saving air-conditioning
system design, and solves the blank of the design method of the medium-temperature cold water central air-conditioning
system in the prior art. The design method comprises the following steps of S1, initial
data extraction and initial judgment, wherein whether the
model selection design of a conventional
fresh air handling unit and a fan coil needs to be adjusted or not is determined; s2, the indoor heat-
humidity ratio is calculated, and an air supply state point is determined; s3, the dehumidification amount of the
fresh air handling unit and the fan coil is calculated; s4, setting equipment
type selection parameters; s5, the dehumidification capacity of the
fresh air handling unit is evaluated; s6, evaluating the dehumidification capability of the fan coil; and S7, determining the
water supply temperature of the system. According to the design of the medium-temperature cold water central air-conditioning system, working conditions can be designed according to different climate areas, the
water supply temperature is determined, compared with a normal-temperature system (7 / 12 DEG C), the
evaporation temperature of a water chilling unit is higher, the COP of the system can be improved, and
energy conservation of an air conditioner is achieved.