چکیده مقاله
Pool boiling is the process in which the heating surface is submerged in a large body of stagnant liquid In the present work, heat transfer in nucleate pool boiling is modeled semi analytically with the consideration of nucleation site density NSD , contact angle and Prandtl number The developed model considers variations of contact angle in bubble growing period The suggested model is stated as a function of wall superheat, contact angle, maximum and minimum active cavities, and physical properties of fluid According to the results, by increasing wall superheat and contact angle, heat flux and heat transfer coefficient enhance Also, rising Prandtl number results in heat flux enhancement Additionally, Heat transfer contribution due to latent heat and transient conduction increases with wall superheat Natural convection contribution gradually decreases with the increase of superheat Comparing the obtained results based on the semi analytical models with existing experimental data and the previous models shows a good agreement
کلیدواژهها
نویسندگان
Hamid Saffari
School of Mechanical Engineering, Department of Energy Conversion, Iran University of Science and Technology IUST , Narmak, ۱۶۸۴۶ ۱۳۱۱۴, Tehran, Iran
Hesam Moghadasi
School of Mechanical Engineering, Department of Energy Conversion, Iran University of Science and Technology IUST , Narmak, ۱۶۸۴۶ ۱۳۱۱۴, Tehran, Iran
Navid Malekian
School of Mechanical Engineering, Department of Energy Conversion, Iran University of Science and Technology IUST , Narmak, ۱۶۸۴۶ ۱۳۱۱۴, Tehran, Iran
Seyed Mostafa Hosseinalipour
School of Mechanical Engineering, Department of Energy Conversion, Iran University of Science and Technology IUST , Narmak, ۱۶۸۴۶ ۱۳۱۱۴, Tehran, Iran
شیوه ارجاع
Saffari, Hamid and Moghadasi, Hesam and Malekian, Navid and Hosseinalipour, Seyed Mostafa,1398,Modeling Heat Transfer in Nucleate Pool Boiling: Influence of Nucleation Sites Density, Contact Angle and Prandtl Number,International Conference on Innovation and Research in Engineering Sciences
ارائهشده در
مجموعه مقالات سومین کنفرانس بین المللی نوآوری و تحقیق در علوم مهندسی30 تیر 1398