Wind power systems for heat production, storage and supply of vegetable storage facilities: Existing technology and facilities to store vegetables – background of the project

Vegetable growing, horticulture and viticulture are important sectors of agriculture. Potatoes and vegetables are raw materials for the food industry and a valuable fodder for animals. According to the production volume the potatoes takes the second place after the grain and is used as a staple food, as the technical culture for production of alcohol, starch, molasses and as fodder for animals. The largest areas for vegetable crops are concentrated around the megalopolis, to ensure the population with fresh products. Farmers grow mainly cucumbers, carrots, cabbage, beets, onions, tomatoes, peppers and eggplant.

Fruit cultivation is concentrated in the warmer climate zones. Apple and pear trees fructify well in the forest and forest-steppe zones. Cherries, apricots, plums and peaches ripen in the Steppe zone. High-quality grapes are characteristic for terrain with tropical and subtropical climate. 

Storage of vegetables and fruits is targeted to save useful nutrient qualities of foods (vitamins, calorie content, biological values) for the next cooking.

Vegetable storage facility is a building or another structure for storage in the fresh state of vegetables, cabbage and onions. Vegetable storage facility usually have several buildings, adapted for the storage of certain species of vegetable crops. Long-term storage of certain types of vegetables and fruit requires the use of various technologies. Vegetables and fruits differ sufficiently according to energy consumption in the storing process.

Temperature and conditions of vegetables and fruit storage are supported by active ventilation. Air is given through special vent channels from bottom to top. Onions are dried in advance by heated air that passes through the channels to the products. Than they are stored at a certain temperature that is supported by active ventilation. The warm moist air is removed employing the forced ventilation. In the southern areas the air is cooled by special refrigerators. Automatic control system provides constancy of storage parameters.

Technological processes of vegetables storage are very power consuming.

Priority energy-saving measures at the operation of vegetable storage facilities are improvement of the energy equipment and use of the unconventional sources of energy (wind, Sun) for the production of thermal and electrical energy. The main indicators of the effectiveness of the fruits and vegetables storage complexes are reduction of energy resources and growth of the part of autonomous power supply. The  use of alternative energy sources in storage of vegetables and fruit requires the development of fundamentally new constructive solutions, unification of several technologies for energy production in a single system. 

Autonomous wind system for power supply of vegetable store facilities is very promising. It mast respond to the following requirements:

 

·     autonomous power production with the use of renewable energy sources to greatly reduce the consumption of organic fossil fuel;

·     storage of heat produced in the presence of wind in special thermal accumulators and use it in the absence of wind;

·          ensure technological processes of heating, cooling, ventilation of the vegetables and fruit; providing electrical energy to power electrical equipment; providing possibility of parallel work of a system with other sources of thermal and electric energy;

·     accounting during work of numerous external climatic indicators collected with the sensors of speed and wind direction, air temperature, illumination, humidity, presence and intensity of rain, cloudiness, position of the Sun;

·     accounting during work of numerous internal parameters of vegetables and fruits store: temperature and humidity of vegetables and air in different parts of the vegetable store, the concentration of carbon dioxide and methane;

 

 

 

By Vasil Sidorov on October 15, 2012

Technopark QUELTA, Queltanews from

Nizhyn Laboratories of Scanning Devices

sidorovvasil@gmail.com

 


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