B&W's SPIG natural draft and induced or forced draft wet cooling towers are designed for a wide range of project requirements such as high seismic and wind loads, 振动控制, 耐蚀性, 低噪声排放, 低温操作和保鲜, 地热, 下水道或海水应用. Cooling tower structures can be customized using fiber reinforced polymer (FRP), 预制或现浇混凝土, 钢材或木材.
SPIG遵循主要参考代码, guidelines and applicable regulations and customer requirements for the design of cooling plants, 允许安全操作, 易于维护和节能.
Mechanical draft field-erected cooling towers are used in a wide range of cooling applications such as power plants, 工业过程, 精炼, 制造和暖通空调&R. Mechanical draft cooling towers use one or more large mechanical fans to move air through the tower.
Water is pumped into the tower through a main header and is sprayed over the fill surface. 取决于风机位置, mechanical draft cooling towers are classified as either induced draft or forced draft and can be either counterflow or crossflow depending on the relative direction of water and air.
B&W SPIG counterflow cooling towers are designed and configured to meet critical customer thermal performance in a cost-effective manner. Our crossflow cooling towers are designed for lower energy consumption and operating costs while providing ease of inspection and maintenance access.
FRP cooling towers have gained acceptance as a smart alternative to wood, 混凝土或钢由于其杰出的性能. FRP cooling tower structures consist of a framework made by structural shapes of fiberglass composite, 用对角支撑加固以转移风, 地震等活荷载作用于盆地. A large area of the fan deck is walkable and designed to allow easy maintenance.
FRP cooling towers are considered the preferred material for harsh and corrosive environments such as oil refineries and petrochemical facilities, 提供以下功能:
The concrete cooling tower structure is made of reinforced concrete and is suitable to resist aggressive waters. The precast concrete design has been implemented to meet stringent project deadlines.
The shell and structure are designed to resist wind loads as required by local codes and standards. It can also be designed to resist seismic loads if required. 混凝土冷却塔可预制或就地浇筑. The use of prefabricated elements is preferred when project deadlines dictate a faster turnaround.
B&W SPIG’s wooden cooling towers use carefully selected pressure treated timber for cooling tower use. Structural cladding is provided by means of FRP corrugated panels. The fan deck provides suitable supports to withstand normal live and operational loads.
B&W SPIG’s environmentally sound cooling towers contribute to safeguarding the delicate marine ecosystem and to reduce environmental impact. Our sea water cooling towers help to preserve costly desalinated water, 同时也减少了碳足迹. When using sea water as make up, material selection is very important. We use corrosion-resistant fiber reinforced plastic (FRP) structures along with high-resistance steelworks and hardware. The mechanical equipment is protected with suitable coatings to provide the highest degree of protection for salt water application.
据报道，冷却塔研究所杂志(卷). 24, No. 2):
- Using seawater in cooling towers is technically and economically feasible.
- Seawater cooling towers can satisfy the cooling needs of petrochemical industries.
- No significant operational or maintenance complications have been reported with the use of 海水冷却塔.
- Economics of 海水冷却塔 are favorable as compared with once-through systems.
Noise in a cooling tower can be generated by the axial fans, 从灌装机或其他机械设备上落下的水. B&W SPIG customized cooling towers are suitable to reduce noise pollution where local requirements place limits on the noise levels.
We have extensive expertise in sound-attenuation cooling towers, designed for very low sound emission by using low noise and ultra-low noise fans. 我们也可以提供其他降噪方案, including water impact attenuation systems on the water basin, 进口和出口消声器, 电机上的隔音箱, 以及隔音墙.
混合冷却系统 & 特殊应用程序
B&W SPIG has also engineered and installed a variety of cooling towers in specialty applications such as hybrid cooling towers (wet/dry), 海水冷却塔, 还有降噪冷却塔.
自然通风冷却塔, 也被称为双曲线冷却塔, are typically the preferred solution when processing large water flows such as in power plant applications. The working principle is that hot air moves upwards while cool air is drawn into the tower through an air inlet at the bottom.
The main advantages of natural draft cooling towers are that no fans are utilized, 省电，噪音低. With no moving parts, there is limited maintenance and a long operating life cycle. 空间有限的应用, a natural draft tower can be supplied with fans located around the cooling tower circumference to increase the airflow amount and reduce the overall size.