The raw materials used for the fiberglass hood are resin, fiberglass fiber, and calcium powder filler, with a ratio of 1:1:1. The resulting hoods are smooth, glossy, strong, and have a certain degree of toughness. If inferior resin is used, the opposite will be true. Inferior resin is turbid, has high viscosity, high heat release, high shrinkage, slow curing, and poor compatibility. The resulting products have many pores, are prone to cracking, and have poor strength and toughness.

Fiberglass cooling towers - closed-circuit cooling towers utilize heat transfer through the tube wall by contacting water and coils to cool the coolant inside the coils. The circulating water in the closed-circuit cooling tower only circulates inside the cooling tower, exchanging heat with the air and then contacting the coils to remove the heat from the working fluid in the coils. The water is replenished as needed. Compared to open cooling towers, the most obvious feature of closed-circuit cooling towers is the addition of coils; the liquid working fluid to be cooled flows inside the steel coils without direct contact with the water, exchanging heat through the tube wall.

Concrete cooling towers have a long history of use worldwide. Since their invention, they have been widely used globally since the late stages of the First Industrial Revolution. They are characterized by their large size, high construction cost, long service life, and suitability for cooling large volumes of fluid. Concrete cooling towers utilize ceramic tile fillers, which are larger than PVC fillers, but offer advantages such as the absence of clogging and the need for minimal maintenance. They can be used to cool fluids of any water quality, regardless of acidity or alkalinity, and irrespective of particle size. This is a significant advantage over PVC fillers, which have stringent requirements for cooling tower water quality.

Energy-saving cooling towers, also known as new cooling towers, are a new product. Any new product has a transition period, and energy-saving cooling towers are no exception. The working principle of a water turbine energy-saving cooling tower is to use a water turbine instead of a motor, increasing the length of the wind tunnel. The entire cooling tower removes the motor, eliminating electricity consumption. By extending the air duct, water overflow is well controlled. Furthermore, unlike motors, water turbines utilize wind energy to drive the fan blades, effectively controlling noise. This achieves true 100% energy saving. Therefore, the question of whether energy-saving cooling towers are 100% energy-saving can be put to rest; they are indeed 100% energy-saving.