▲ 螺桿式冷水機的主要控制參數(shù)為制冷性能系數(shù)，額定制冷量，輸入功率以及制冷劑類型等。

▲ 冷水機組的選用應根據(jù)冷負荷及用途來考慮。對于低負荷運轉(zhuǎn)工況時間較長的制冷系統(tǒng)，宜選用多機頭活塞式壓縮機組或螺桿式壓縮機組，便于調(diào)節(jié)和節(jié)能。

▲ 選用冷水機組時，優(yōu)先考慮性能系數(shù)值較高的機組。根據(jù)資料統(tǒng)計，一般冷水機組全年在**負荷下運行時間約占總運行時間的1/4以下?？傔\ 行時間內(nèi)**、75%、50%、25%負荷的運行時間比例大致為2.3%、41.5%、46.1%、10.1%。因此，在選用冷水機組時應優(yōu)先考慮效率曲線比較平坦的機型。同時，在設(shè)計選用時應考慮冷水機組負荷的調(diào)節(jié)范圍。多機頭螺桿式冷水機組部分負荷性能優(yōu)良，可根據(jù)實際情況選用。

▲ 選用冷水機組時，應注意名義工況的條件。冷水機組的 實際產(chǎn)冷量與下列因素有關(guān)：

A)冷水出水溫度和流量;

B)冷卻水的進水溫度、流量以及污垢系數(shù)。

▲ 選用冷水機組時，應注意該型號機組的正常工作范圍，主要是主電機的電流限值是名義工況下的軸功率的電流值。

▲ 在設(shè)計選用中應注意：在名義工況流量下，冷水的出口溫度不應超過15℃，風冷機組室外干球溫度不應超過43℃。若必須超過上述范圍時，應了解壓縮機的使用范圍是否允許，所配主電機的功率是否足夠。

▲ Screw the main control parameters for the chiller cooling
coefficient of performance, the rated cooling capacity, input power and the
type of refrigerant.

▲ Chiller selection should be based on the cooling load
and use to consider.Low-load operation conditions for longer periods of time
cooling system,should use more head piston compressor or screw compressor, easy
to adjust and energy.

▲ Selection of chillers, priority is given a higher
coefficient of performance of the unit. According to statistics, the annual
general chillers running at ** load, the total time to run time of 1/4 or
less. The total running time of **, 75%, 50%, 25% load ratio of the running
time of roughly 2.3%, 41.5%, 46.1 %, 10.1 %. Therefore, the choice should be
given priority chillers relatively flat efficiency curve models. Meanwhile, the
selection should be considered in the design chiller load adjustment range.
Multi-head screw chiller part-load performance, can be selected according to
the actual situation.

▲ Selection of chillers, the state should pay attention
to volunteers conditions.

Actual chiller cooling capacity with the following factors:

A) cold water temperature and flow;

B) cooling water inlet temperature, flow, and fouling factor.

▲ Selection of chillers, the unit should be noted that
the model of the normal scope of work, mainly the main motor current limit is
the nominal operating conditions of the shaft power of the current value.

▲ Use in the design should pay attention: in the name
of flow conditions, the cold water outlet temperature should not exceed 15℃, the outdoor dry bulb temperature air-cooled unit should not exceed
43℃. If you need more than the above range, should be
aware of whether to allow the use of the compressor, the main motor with the
power is adequate.

特點

▲ 機組采用智慧型微電腦觸摸屏+PLC控制系統(tǒng)。

▲ 采用高效進口螺桿壓縮機、選用**的蒸發(fā)器和冷凝器，采用先進加工工藝。

▲ 具有多種機組運行安全保護措施，保證機組運行及客戶的安全。

▲ Unit using intelligent touch screen + PLC microcomputer control
system.

▲ imported high-efficiency screw compressors, high
quality of the evaporator and condenser, using advanced processing technology.

▲ With a variety of units are safe and protection
measures to ensure the safety of plant operation and customers.