There are some differences between the pressure loss and the calculation results of the ventilation and dust removal pipeline of animal husbandry fan, which is inevitable. Therefore, the upper bound allowable error calculated in the design specification is 10%-15%. If this program calculation is ignored, theLivestock Wind MachineHas a significant impact on performance and should be given attention.

1. The reasons for the inaccurate calculation level of the resistance of livestock Fan pipe network: The calculation of the resistance of pipe network is not accurate, the resistance coefficient is not accurate, the radius distribution of the system is unreasonable, the selection of Air inlet condition of fan is not accurate, and the stochastic selection standard is unreasonable. Ion; Ignoring the influence of construction supervision on field design change in construction process will lead to the error of calculation and actual loss being higher than 30% or larger, resulting in the mismatch between the rated performance of the selected model and the actual operating performance, which is not consistent with the actual operation. As a result, performance will change. If the calculated resistance is greater than the actual requirement, the flow rate caused by centrifugal fan operation will greatly increase the actual power consumption. The result is the reduction of the total pressure efficiency, but also make the motor rated power is easy to overload, there is a danger of burning electrical maneuver, but the straight tilt of the full pressure curve flow change has little impact; Conversely, it will cause less running flow, the actual power consumption decreases, and the efficiency in the fan decreases. At the same time, due to the decrease of flow rate, the flow rate in the pipeline of dust removal system decreases, which promotes the deposition of dust. These two conditions will make the livestock and poultry fan in a long-term light load, inefficient, energy-saving state.

2. Animal husbandry fan selection of the full pressure grade inaccurate consequences: exhaust gas treatment, such as the selection of animal husbandry fan negative pressure too large, will destroy the normal thermal balance, with the increase in the intake, temperature will affect combustion or heating, resulting in the loss of heat source energy, when the fan discharge dust exhaust gas, the source of pollution to maintain a negative pressure state , Which can effectively prevent the spread of harmful pollutants.