1. Different references
1. Open sprinkler head: This is a fire extinguishing installation that can automatically open the sprinkler head to spray water to extinguish the fire and send out a fire alarm signal in case fire. occurs.
2. Closed sprinkler head: This is a component that directly sprays water to extinguish fires. It is an automatic sprinkler head with a heat sensitive component and its sealing component.
2. Different operating principles
1. Open Sprinkler Head: This is an open sprinkler head that does not have a temperature sensing or interlocking device and is normally placed. open state. When a fire occurs, all open sprinklers in the system protection zone where the fire is located release water together to extinguish the fire.
2. Closed Sprinkler Head: A closed sprinkler head is usede, which is a normally closed sprinkler head. The temperature sensing and sprinkler head locking device will only drop and open the sprinkler head under a predetermined temperature. temperature environment. Therefore, when a fire occurs, this sprinkler system will only ignite the nozzles that are in the flame or near the fire source to extinguish the fire.
3. Different working methods
1. Open Sprinkler Head: Usually the roof fire water tank is filled with water, then the chrome plating of the sprinkler head melts. the temperature reaches a certain temperature. The water in the pipe sprays automatically under the action of water pressure from the fire water tank. At this time, the wet alarm valve automatically opens and the valve pressure switch automatically opens. The pressure switch has a signal line and is interlocked with the fire pump, and the pump starts automatically.
2. Closed sprinkler heads: According to the heat-sensitive components, they can be divided into two types: glass ball sprinklers and fuse component sprinklers according to the installation form and water distribution form; divided into vertical type and hanging type, side wall type, ceiling type and dry hanging type, etc.
Open circulation water system refers to a power plant close to a large river. is taken from the upper reaches of the river and exchanges heat through the condenser. It then returns to the water circulation system (without cooling towers) in the lower river.
In other words, areas where water is not a problem. It saves on construction and maintenance costs of cooling towers and is very efficient.
Closed circulating water systems are generallyally used in areas experiencing severe water shortages. The distinctive feature of closed circulating water systems is that they have a cooling tower and the circulating water circulates between the condenser and the cooling tower. The advantage is that scale inhibitors and other chemicals can be added to the water to ensure that the entire condenser water circulation system is not prone to scale and breakdown.
For related information about water circulation systems and condenser cleaning, you can directly search “Xingerui” on Baidu