Теория и практика создания современных аппаратов воздушного охлаждения общепромышленного назначения

Abstract

Приведен обзор состояния вопроса проектирования современных аппаратов воздушного охлаждения (АВО) применяемых в химической, нефтегазовой и металлургической промышленности. Обобщены основные положения метода установления и метода Ньютона для определения эксплуатационных показателей теплообменного аппарата. На базе комбинирования рассмотренных методов разработана конструкция малопоточного холодильника захолаживания конденсата, приведены его технические параметры и общая модель компоновки оборудования.The review of the state of the problem of the design of modern air cooling units (AСU) used in the chemical, oil and gas and metallurgical industries is given. The main provisions of the method of establishment and Newton's method for determining the operational parameters of a heat exchanger are generalized. On the basis of a combination of the methods considered, the design of a small-flow condensate condensation condenser has been developed, its technical parameters and the general model of the equipment layout are given. The main parameters of the units of the air cooling device, the type of electric motor, the diameter of the fan impeller and the number of blades in it are determined. The reasons are formulated, in which, under the conditions of the current production, the heat exchanger apparatus is not optimally organized, namely: the intensive failure of several cooling tubes, thereby reducing the heat dissipation area; contamination by foreign objects of fins fins surfaces; increased vibration in the sections of the heat exchangers due to poor assembly of the units of the apparatus or design errors in the design of the project; increased power consumption by the electric drive, which controls the AСU; incorrectly selected angle of adjustment of the cooling medium flow rate on the louvered device.