The steel heat pipe produced by Dawn Happy Heat Pipe is different from the traditional steel-water gravity heat pipe. After more than 30 years of intensive research by researchers engaged in military industry, a lot of empirical data have been accumulated. Different internal and external surface treatment methods have been adopted for different materials. Especially, the Dawn Happy Heat Pipe Working Fluid developed by Dawn Happy itself has been used as the working carrier of the heat pipe. Its chemical performance is stable and high. Temperature non-decomposition, no loss, excellent compatibility with materials, excellent performance of invasion; no corrosiveness to metals; long-term heating work does not scale, do not produce non-condensable gas, saturated vapor solubility and latent heat are several times as much as water, Dawn Happy industrial heat pipe in various applications, widely used at home and abroad in aviation, aerospace, military, petroleum, chemical, metallurgy, electroplating, machinery, electricity. Zi, electricity, coal, railways, automobiles, communications, grain storage, textiles and other fields.
Specification of steel heat pipe:
Standard seamless steel pipes and various stainless steel pipes and titanium alloy pipes are mainly of diameter × wall thickness Φ25×2.5mm, Φ32×3mm and Φ38×3mm. The invalid end of the heat pipe is the radius of the heat pipe, and the total invalid section is the diameter of the heat pipe. It is also possible to customize other diameter steel heat pipes. It is not recommended that users use steel heat pipe products exceeding Φ38mm, and the length of the steel heat pipe is the shortest recommendation due to technological factors200 mm, the longest length is suggested to be 4000 mm. The steel heat pipe beyond this length can also be customized, but not within the recommended range. Considering the power and heat transfer characteristics of the steel heat pipe, the ideal size range is 200 mm to 2000 mm.
Average heat transfer per heat pipe:
In the process of calculating industrial waste heat recovery, the heat transfer power of steel heat pipe is often referred to as the average heat transfer capacity of a single heat pipe because of the different locations of heat exchangers and the different contact temperatures. It is assumed that the temperature of evaporation section ranges from 200 to 300 degrees Celsius and the recovery temperature decreases to 150 degrees Celsius. Taking the total length of one meter as an example, the empirical value is used as a reference: The Qi value of Φ25 is about 0.7 Kw on average,The Qi value of Φ32 is about 0.8 Kw on average,The Qi value of Φ38 is about 0.9 Kw on average. The above is only a reference value. In practical application, the average heat transfer calculation in Dawn Happy heat pipe heat exchanger calculation book is taken as the standard.