外文翻译--太阳能增温丘陵地区沼气厂实地考察(编辑修改稿)

外文翻译--太阳能增温丘陵地区沼气厂实地考察(编辑修改稿)内容摘要：

heat transfer properties makes it conventional cement designs,in addition to digging the formation of cracks and the extended installation time are considered to be major of PVC greenhouse type structure over a biogas plant allowed solar heating of the substrate from18℃ to about 37℃ .Considerable efforts have been devoted in this direction,which resulted in the development of several greenhouse and shallow solar pond over the dome,use of insulation around the digester. The investigations carried out for studying the efficiency of these concepts, however,have limited significance due to inadequate attention to the mechanism of energy gain and condition is achieved in a greenhouse constructed with UVresistant transparent plastic cover,generally known as winter UVstabilized propylenefilm is not resistant to temperatures higher than 沈阳农业大学学士学位论文外文翻译 7 50℃ ,and it therefore bees brittle and its transparency decreases with the was most probably due to the increasing opacity of the cover and the increasing number of throne areas. The use of solar canopy over the conventional biogas plants was suggested for increasing the slurry temperature and hence the output of has been observed from a parative study of the conventional and the solarassisted greenhouse coupled biogas plant that the temperature of the slurry can be raised from 20℃ to nearly 35℃ ,the optimal temperature foranaerobic new design of greenhouse had been developed for colder regions at Laval University during winter reduction has been found in the heating requirements of 30–40% pared to a standard,double layered plastic covered general,there is no rule of thumb,but for optimum process stability, the temperature should be carefully regulated within a narrow range of the operating a safety measure,it is a mon practice either to burry the digesters in the ground on account of the advantageous insulating properties of the soil,or to use a greenhouse to the lower temperature, biogas production decreases drastically and may ,for enhancing biogas production,a higher digester temperature than ambient temperature is ,for a required production rate of biogas,the period to achieve the optimum temperature should be reduced. The size and cost of the biogas system can be greenhouse concept should be integrated for larger capacity biogas plant. and methods The field study was carried out in a small hamlet namely Kadaladu 9 km from is situated at an elevation of 900–2636m above latitudinal and longitudinal dimensions being 130km (Latitude:10–38WP11–49N)by 185km(Longitude:–).The installation cost of biogas plant is influenced by many parameters among which construction material is an important experimental biogas plant was constructed from over head plasticwater tank with height,diameter and thickness of 157cm,135cm and 6mm, biogas plant was placed above ground covered with greenhouse canopy(experimental biogas plant) which was pared against Indian standard conventional cement biogas plant which serves as gas generated from the biogas plant was utilized for cooking(burner) and lighting study was conducted for one year from October–September,2020 and the averaged values were tabulated statistically adopting Pearson‟s Product moment correlation coefficient method Retention time was maintained at and slurry temperatures were recorded on an hourly basis (from . to .) using calibrated thermocouples for all the experiments and averaged per insolation was also monitored on an hourly basis (from .) using calibrated suers for all the experiments and averaged per production was recorded on a daily basis with wet type gas flow meters of one litre capacity(INSREF gas flow meter ,India) and methane in the gas was studied twice in a month using Gas application of biogas (family of four members) for cooking and lighting was also recorded tw。