Project CategoryMain project classification
多年的应用时间，然而真正引起国内企业关注还是近几年，商用空调是在家用空调在国内市场兴起后跟进的。 Commercial central air conditioners in Dongguan have a century of development history in the world, and have more than 20 years of application time in China . However, the real concern of domestic enterprises is in recent years. Commercial air conditioners have followed up after the rise of domestic air conditioners in the domestic market.
The screw chiller is named as the screw chiller because its key component compressor uses the screw type. It can be divided into two types of water-cooled screw chiller and air-cooled screw chiller according to different heat dissipation methods.
到 744760Kcal/h ，压缩机功率可从 8KW-1280kw ，可广泛应用于制冷量特别巨大的各行各业，共有 14 种型号可供选择。 Dongguan central air-conditioning screw chiller has a refrigeration capacity ranging from 92880Kcal / h to 744760Kcal / h . The compressor power can be from 8KW-1280kw . It can be widely used in various industries with particularly large refrigeration capacity. There are 14 models to choose from. So when we choose screw chiller, what should we start with? Take a look:
1. The selection of screw chiller should be based on the cold load and the area in which it is intended to be used. For the refrigeration system with low load and long operating time, it is suitable to choose a multi-head piston compressor or screw compressor, which is easy to adjust and save energy. It is also a double-head screw chiller that we often say. When the load changes, the chiller automatically determines the number of startups to ensure that the compressor that is turned on is in the best working state, thereby effectively saving electricity.
2. When selecting screw chiller, priority should be given to the unit with higher coefficient of performance. 100% 负荷下运行时间约占分运行 时间的 1/4 以下。 According to previous statistics, the operating time of a normal chiller under 100% load throughout the year accounts for less than 1/4 of the sub-operating time . 100% 、 75% 、 50% 、 25% 负荷的运行时间比例大致为 2.3% 、 41.5% 、 46.1% 、 10.1% 。 The running time ratios of 100% , 75% , 50% , and 25% load during the running time are approximately 2.3% , 41.5% , 46.1% , and 10.1% . Therefore, when selecting a chiller, priority should be given to a chiller model with a relatively flat efficiency curve. 东莞中央空调选用螺杆式冷水机。 At the same time, the adjustment range of the chiller load should be considered in the design and selection. The multi-head screw chiller has excellent partial load performance. According to the actual situation of the factory, the central air conditioner in Dongguan can choose the screw chiller.
4. When selecting a screw chiller, you should pay attention to the normal working scope of this type of screw chiller, mainly because the current limit of the motor is the current value of the shaft power under surface conditions.
15 ℃ ，风冷机组室外干球温度不当逾越 43 ℃ 。 5. When designing and selecting the screw type chiller, please pay attention to: under the nominal working flow, the outlet temperature of the cold water should not exceed 15 ℃ , and the outdoor dry bulb temperature of the air-cooled unit improperly exceeds 43 ℃ . If it is necessary to exceed the above range, when understanding whether the use range of the compressor is allowed, and whether the power of the attached motor is sufficient.
Related links: Dongguan air-conditioning purification project, Dongguan dust-free purification equipment, Changan central air-conditioning project, low-voltage power distribution project, Dongguan purification ventilation project, Dongguan dust-free purification project, hydropower installation project, Dongguan 100,000-level dust-free workshop, Dongguan City Power Xiang Air Conditioning Purification Engineering Co., Ltd.