Ice adhesion of an aqueous solution including a surfactant with stirring on cooling wall: ethylene glycol—a silane coupling agent aqueous solution Hiki Hong a,1 , Jong Hyeon Peck b,2 , Chaedong Kang c, * a School of Mechanical and Industrial System Engineering, KyungHee University, Yongin 449-701, South Korea b KITECH, HVAC/R Research Team, Chonan 330-820, South Korea c Department of Mechanical Engineering, Chonbuk National University, 664-14 Duckjin-dong, Jeonju 561-756, South Korea Received 4 March 2004; received in revised form 24 June 2004; accepted 24 June 2004 Abstract Ice adhesion to the cooling wall directly hinders continuous ice formation or system performance due to the increase of flow and thermal resistance. In order to obtain the basic characteristics of two- or three-component aqueous solutions with EG, SCA and water on freezing, the influence of component ratio and supercooling degree on those solutions was investigated through a batch type freezing process of the solutions. Moreover, the strength of ice adhesion was shown to vary by stirring power. Ice adhesion was suppressed when (1) the solution including the additive SCA at comparatively high concentration; (2) the solution had high initial concentration of EG or SCA; (3) the brine temperature was higher; (4) the supercooling degree was comparatively small in the lower concentrations. No ice adhesion occurred at the stirring power below 30 W. Furthermore, particle size of the ice slurry was smaller in higher concentrations. q 2004 Elsevier Ltd and IIR. All rights reserved. Keywords: Ice; Wall; Aqueous solution; Additive; Surface tension; Mixture; Two-phase mixture Adhe ´rence de la glace, forme ´e a ` partir d’une solution aqueuse contenant un agent tensio-actif, soumise a ` l’agitation, sur une paroi refroidie—solution aqueuse contenant un couple a ` base de silane Mots cle `s : Glace ; Paroi ; Solution aqueuse ; Additif ; Tension superficielle ; Me ´lange ; Me ´lange diphasique 1. Introduction Ultimately, high heat transfer rate and transportability are the merits of a system with continuous ice formation and storage, a so-called dynamic-type ice storage system (DISS) [1]. The peculiarity comes from fine particle ice of micrometers scale. However, ice adhesion to the cooling 0140-7007/$35.00 q 2004 Elsevier Ltd and IIR. All rights reserved. doi:10.1016/j.ijrefrig.2004.06.010 International Journal of Refrigeration 27 (2004) 985–992 www.elsevier.com/locate/ijrefrig * Corresponding author. Tel.: C82-63-270-2318; fax: C82-63- 270-2315 E-mail addresses: hhong@khu.ac.kr (H. Hong), pjh6240@ kitech.re.kr (J.H. Peck), ckang@chonbuk.ac.kr (C. Kang). 1 Tel.: C82-31-201-2925; fax: C82-31-202-2625. 2 Tel.: C82-41-589-8343; fax: C82-41-589-8330.