ИССЛЕДОВАНИЕ ТЕПЛООТДАЧИ И ГИДРАВЛИЧЕСКОГО СОПРОТИВЛЕНИЯ СОЛНЕЧНЫХ ВОЗДУШНЫХ НАГРЕВАТЕЛЕЙ С ИНТЕНСИФИКАЦИЕЙ ТЕПЛООТДАЧИ

Аннотация

Subject of investigation: as the subjects of the investigation geliorccievers of the Solar air heaters of the different geometry arc concerned. The aim of the work: the investigation of the heat issue and hydraulic resistance of the solar air heaters with intensification of the heat issue. Method of the investigation: experiment, physics and mathematics modeling, equation solutions. Received results and their actuality: methods of rational intensification of the heat issue by the means of by-thc-wall influence in the heat outing channels with the low speeds of flows; empirical depending of the heat exchanging and hydraulic resistance of the heat outing surfaces of the following type: diffuser - confessor, with perforation of discreet fault; criteria’s of the effectiveness, based on the analogical laws of Reynolds and methods of the similar power consumption; diffuser - confessor surface with the comers of the diffuser opening 12,7 and equivalently distance of the diffuser - confessor 5:1; in which diffuser’s part is made in the type of Zhukovskiy’s profile, what gives the opportunity to lowdown profile part of the hydraulic resistance. Practical importance: the present investigations allowed to get information on the heat exchanging and hydraulic resistance of the heat outing channels with the following types of the surface: diffuser - confessor, with perforation and discreet fault; offered concreted model of the intensification of the heat exchange on the surface of the diffuser - confessor type: the received experimental information on the heat exchange and hydraulic resistance may be recommended for the usage in the projecting of the effective solar air hitters. Level of the interference and economical effectiveness: the results of the scientific investigations and practical recommendations arc used in the following works: “Intensification of the heat exchange in the channels of the solar air heaters made for the specialists, worked on the problems of the construction and design of the solar air heaters, and also for megastars, aspirants who conduct scientific investigations in the field of geliotcchnics and heat techniques; experimental example of the solar air heater with perforation gcliorecieving devices, used in the technological process of the heating of the fruits and vegetables in the Turakurgan’s plant (Namangan city) in the methodological guides on the course. “ The Planning process of the experimental investigations” and practical works of the students of the energetic faculty of the Fergana Polytechnic Institute The field of appliance: heating systems, Systems of the Solar heat providence.