Application of frequency converters in grain drying farm

For those who are engaged in drying grain, they know how troublesome it is and always try to reduce electricity consumption per ton of dried grain. frequency converters< span style="color:rgb(0, 0, 0); font-family:myriad,helvetica,tahoma,arial,clean,sans-serif; font-size:12px"> It is in this industry that their payback often exceeds no more than 2000 hours of operation (3 months), that is, less than a season The classical scheme of the grain drying complex consists of the following units:

First, the grain falls on the loading pit Then it is fed through the conveyor to the elevator Noria lifts the grain up, and it wakes up through the winnowing machine (a powerful fan that removes debris from the grain) falls into the intermediate hopper, in which the winnowed grain is ready for drying Then the grain it is fed into the dryer (through the loading auger), passing through it, it dries, gets to the unloading auger, where it is cooled by a fan to the ambient temperature, then it gets to the line (elevator, conveyors) and before unloading, another cleaner (fan) can pass and then pour down along the conveyors or to a warehouse, or to a bunker or directly to the body of a car (or wagon) Those who buy an elevator in parts always focus on 1.5-ra, or even more, a multiple reserve for the future That is, they expect that the complex will dry 100 tons per day, conveyors, bucket elevators and other transportation units are taken with a margin of 150 tons per day, so that it is possible, then they will expand. frequency generators with enviable savings is the speed of unloading grain from the dryer The productivity of the complex depends on the type of crop that is being dried and its moisture content before drying The drying time of the crop is controlled, as a rule, by the speed of unloading the crop from the drying chamber It is the speed of unloading grain from the dryer that sets the productivity of the complex frequency on the unloading mechanism, you can adjust the productivity of the complex, thereby obtaining the required grain moisture. Here there is a direct saving by how many times the productivity was reduced so much and saved money, plus we got the required grain quality

When you have already set the drying capacity, then under it we set the speed of transporting grain to the warehouse and the speed of loading the dryer. protection, including from harmful network factors; secondly, we set the productivity we need, thereby reducing electricity consumption; thirdly, we remove the reactive component, raising the efficiency to 96-98%comua/a-vozmozhna-li-ekonomiya--pri-nominalnih-oborotah-elektrodvigatelya">rated speed but here the saving effect is possible up to 30% by reducing the supply voltage while maintaining the required power, as well as increasing the engine efficiency up to 98 % removing the reactive component

At the cleaning fan, if it is chosen with a margin, there is also a need to save energy, since, depending on the crop and the level of litter, it often happens that the performance of the fan A of the fan decreases due to the fact that it has a non-linear characteristic when decreasing performance by 35-40%, power consumption drops by 2 times

And one more saving unit is the grain cooling unit after drying. Its performance must be changed depending on the air temperature outside. The quality of the output product also depends on it
As practice and data received from our Clients show, the payback of implementation was less than 90 working days in less than a season and received higher product quality

The average data is as follows (taken for September 2012-April 2013 and drying of different crops at 2 grain drying complexes in the Chernihiv region)

Average energy savings on elevators 18%

Average energy savings on conveyors 27%

Average savings per unloading node 37%

Average savings on a cleaning machine 32%

Average savings on grain cooler 35%

Recoupment at a rate of 1 UAH 92 kopecks per kW was less than 2000 hours (90 working days) 7 UAH/hour For 2000 hours of work 7400 UAH, which completely recoups the investment in the frequency converter in just three months If you have any questions about this article, a team of professionals will answer them and help you select and implement this energy-saving solution. For communication, enter the section < a href="https://chastotnik.ua/contacts">Contacts