Davide Del Col

TL;DR: In this paper, the authors proposed a new method to determine the condensation heat transfer coefficient of fluids flowing into horizontal smooth tubes with internal diameters D > 3 mm, which is suitable to work very well with old and new fluids used in the refrigeration, air conditioning, and heat pump industries.

TL;DR: In this article, a standard glazed flat plate collector and an evacuated tube collector are installed in parallel and tested at the same working conditions; the evacuated collector is a direct flow through type with external compound parabolic concentrator (CPC) reflectors.

TL;DR: In this article, the effects of vapour quality, mass velocity, saturation temperature and temperature difference between saturation and tube wall on the heat transfer coefficient are investigated by analysing the experimental data.

TL;DR: In this article, a review of the most recent results appeared in the open literature and pertinent to thermal design of condensers for the air conditioning and refrigeration industry; both in-tube and bundle condensation are considered, related to the use of plain and enhanced surfaces.

TL;DR: In this article, the authors presented a new predicting model to compute the heat transfer coefficient and pressure drop during condensation inside smooth tubes when operating with pure or blended halogenated refrigerants, including the new high-pressure HFC fluids, for which the existing predicting methods are inadequate.