This paper introduces additive manufactured (AM) two-phase heat pipe technology and advanced thermal management technologies, presented as a Keynote Lecture at the 16th UK Heat Transfer Conference at the University of Nottingham. AM heat pipes have been developed utilising laser powder bed fusion (...
For laminar flow, the pressure difference based on the equation of a Hagen–Poiseuille flow can be calculated for different pipe geometries of length L according to Ekström and Andersson (2022) by: (1)Δp=A⋅η⋅L⋅ūdh2. Here, the constant A is determined by the geometric ...
Finally, the “use of district cooling systems”, the “nominal pipe diameter”, “the construction period of the DHN” and “creation of a redundant network structure” are evaluated. All four features entail additional resources, consequently worsening the final rating results. The evaluation concl...
/ 5fQnl; `fQnl/ n 1 tube or pipe that is wide at the top and narrow at the bottom, used for pouring liquids, powders, etc into a small opening 漏斗: I need a funnel to pour petrol into the tank. 我需要一个漏斗把汽油灌进油箱. =>illus at filter 见 filter 插图. 2 metal chimney...
Section 2 -Convective heat transfer
At one point, there were 40-50 foot flames behind the old sugar cane pipe. That is probably about 12-15 feet from homes. Homeowners were left battling the blaze with their water hoses. But it still wasn't enough. The brushfire blackened at least 400 acres and stretched from the Hawaiian...
Tubular heat exchangers are classified as double pipe, shell and tube and coiled tube heat exchangers. 3.1.1 Double pipe A double pipe heat exchanger basically comprises a tube or pipe fixed concentrically inside a larger pipe or tube as seen in Fig. 4a. One fluid flows in the inner pipe ...
Here, Af represents the floor area, B a heat exchange coefficient, and the power product is specific to the floor heating installation (including pipe diameter, spacing, floor covering, etc.). mw represents the mass flow and cp,w the specific heat of the water circulating in the floor heati...
The dish consists of a paraboloidal base structure of Galvanized Iron (GI) sheets, a mounting pipe, a receiver stand, a jack system, two sensor-based gear systems and four base wheels. The details of the components are shown in Figure 2. The complete system is light in weight and easy ...
Cooling of the pipe samples was carried out by supplying water through the hollow screw and the annular gap between the pipe and the screw. Flue gas dew point temperature (DTP) sensors (8) were installed before and after the working area for the LTC study. The investigation was performed ...