Influence of spray characteristics on heat flux in dual phase spray impingement cooling of hot surface
نویسندگان
چکیده
منابع مشابه
Theoretical and experimental study of the effects of spray inclination on two-phase spray cooling and critical heat flux
Experiments were conducted with PF-5052 liquid sprays impacting a 1.0 1.0 cm heated test surface at different inclination angles, flow rates, and subcoolings. Inclination angle had no noticeable effect on the single-phase or two-phase regions of the boiling curve. Maximum CHF was always achieved with the spray impinging normal to the test surface; increasing angle of inclination away from the n...
متن کاملEffects of high subcooling on two-phase spray cooling and critical heat flux
Experiments were performed with FC-77 using three full-cone spray nozzles to assess the influence of subcooling on spray performance and critical heat flux (CHF) from a 1.0 1.0 cm test surface. The relatively high boiling point of FC-77 (97 C at one atmosphere) enabled testing at relatively high levels of subcooling. Increasing the subcooling delayed the onset of boiling but decreased the slope...
متن کاملEffects of mass flow rate and droplet velocity on surface heat flux during cryogen spray cooling.
Cryogen spray cooling (CSC) is used to protect the epidermis during dermatologic laser surgery. To date, the relative influence of the fundamental spray parameters on surface cooling remains incompletely understood. This study explores the effects of mass flow rate and average droplet velocity on the surface heat flux during CSC. It is shown that the effect of mass flow rate on the surface heat...
متن کاملInfluence of Cryogen Spray Cooling Parameters on the Heat Extraction Rate from a Sprayed Surface
Cryogen spray cooling is used to prevent epidermal thermal damage during port-wine stain laser therapy, despite the limited understanding of the fluid dynamics, thermodynamics, and heat transfer characteristics of cryogen sprays. In recent studies, it has been suggested that the heat flux through human skin could be increased by changing physical parameters such as nozzle-to-skin distance, nozz...
متن کاملNozzleless spray cooling using surface acoustic waves
Surface acoustic wave (SAW) atomization is an attractive approach for generating monodispersed microdroplets for a diversity of applications, from drug delivery to mass spectrometry, due to its reliability, miniaturizability, and portability. Here, we demonstrate a nozzleless spray cooling technique based on SAW atomization, with the key advantage of downward scalability: increasing the operati...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Alexandria Engineering Journal
سال: 2016
ISSN: 1110-0168
DOI: 10.1016/j.aej.2016.07.015