Heat transfer coefficient for condensation of steam on freely formed falling liquid jets

Abstract

This article presents the research results of direct contact condensation of steam on freely formed falling liquid jets. After the comparison of experimental data and open literature correlations it was concluded that published correlations does not provide accurate coverage of experimental data. A new correlation was established in the following form urn:x-wiley:00011541:media:aic15233:aic15233-math-0001 © 2016 American Institute of Chemical Engineers AIChE J, 62: 2579–2584, 2016

Experimental study of direct contact condensation of spent vapor in a cocurrent flow packed tower under negative pressure

“…NTU L is used to describe the heat transfer intensity between two phases and its value is related to the liquid flow rate, the heat transfer coefficient and the contact area between the two phases. In practical experiments, the NTU L is calculated as 27 : $$${\mathrm{NTU}}_{{\rm{L}}}=\mathrm{ln}\frac{{T}_{\mathrm{cond}}-{T}_{\mathrm{in}}}{{T}_{\mathrm{cond}}-{T}_{\mathrm{out}}},$$$ where T out is the temperature of the mixture of cooling water and steam condensate at the outlet position of the condensing tower (°C), T in is the temperature of the cooling water at the inlet of the condensing tower, (°C), T cond is the steam temperature (°C).…”

“…NTU L is used to describe the heat transfer intensity between two phases and its value is related to the liquid flow rate, the heat transfer coefficient and the contact area between the two phases. In practical experiments, the NTU L is calculated as 27 :…”