Šiuolaikinės ūkininko sodybos aplinkosauginės ir energiją taupančios sistemos

Abstract

Environment friendly and energy saving mashinery in ve farm: produetion of bio-gases, employment of solar energy in the farm. emploimenl of the wind in the farm. Bio-gases - ti is mixture consisting of CH4 - 55-70%. CO2 - 30-45%. H2<1 %. H2S <3%. The raw materiali for bio-gases - are all kinds of organic waste of farm. The size of farm - 70-100 ha. The planned output makes - 38000-40000 m3. Employment of the solar energy a solar collector. Solar collector absorbs energy of the sun and trasmits to the water that is used in household. Demant for warm water in a farm. In private life of the family 200-300 l a day per one family. (40-60 l a day per one person, 100 l for a cattle-shed needs. Since we know demand of water we are able to calculate the area of the transparent plate the coolector. 1m2 of area for 50l of water. If a collector is self made we will need 1.5 m2 for 50 l of water. Employment of the wind energy. Wind power plants would be especially good for the farms situated in the seaside zone, where constant and strong winds prevail. The least suitable regions for wind power plants are in the efastra and south-eastem part of Lithuania. The speed of the wind in not high in many regins of Lithuania. The strong power stations could build only in the seaside area and the less stronger ones in other areas where the speed of the wind exceads 3.5-4 m/s. Small poner station (20-60kW) are build according to the autonomous operating conditions (regime). Such power stations are suitable for small-scale farms. One of the mostsuitable of currently manufactured wind power stations is one build by "Jegainės" Ltd.