| China is a large country of aquaculture and consumption.In recent years,due to the characteristics of stability,high quality and high yield,industrialized aquaculture has become the mainstream direction of aquaculture,and industrialized aquaculture technology has also been greatly developed.Nevertheless,in the process of industrialized aquaculture,the problem of high heating energy consumption has not been effectively solved,especially for Northern China,The energy consumption cost of aquaculture in winter is higher.Therefore,it is of great significance to optimize the thermal insulation design of industrialized fish pond.Firstly,this paper analyzes the structure of the existing industrialized aquaculture pond,defines the research object of this paper,analyzes the heat transfer process of the fish pond by using the basic principle of heat transfer,obtains the physical parameters of the fish pond insulation materials,and gives the heat calculation formula of each part of the fish pond and the natural convection heat transfer coefficient ha,the mathematical heat transfer model of the industrialized fish pond is established,and the boundary conditions of the heat transfer model of the fish pond are determined.The steady-state heat transfer process of the fish pond is simulated by using the FLUENT software package in the ANSYS simulation software,and the three-dimensional steady-state heat transfer temperature distribution cloud diagram of the fish pond is obtained.Experiments are designed to verify and compare the simulation results,The experimental results show that the heat transfer model of the fish pond is in line with the actual heat transfer process of the fish pond.When optimizing the insulation design of the fish pond,the relevant optimization results can be obtained by changing the relevant parameters of the heat transfer model.The energy consumption of each part of the existing industrialized fish pond is calculated,and the energy consumption of each part of the fish pond is obtained,which provides a direction for the optimal design;Using ANSYS parametric manager to explore the diameter of fish pond di.Thickness of thermal insulation material for tank wall δ1i and bottom insulation material thickness δ2i on the thermal insulation performance of the fish pond,the economic thickness of the thermal insulation layer of the pond wall and bottom is determined through calculation,and the revenue and expenditure expenses of the fish pond with different diameters are calculated.Through the optimal design of the structure of the fish pond mouth,the heat dissipation through the fish pond mouth is reduced.Finally,compared with the energy consumption of the industrialized fish pond before and after optimization,the heat dissipation of the pond wall is reduced by 79.2%,the heat dissipation of the pond mouth is reduced by 64.3%,the heat dissipation of the pond bottom is reduced by 51.7%,and the total heat dissipation of a single fish pond is reduced by 67%. |
