186 uppsatser · sida 1 av 13
… of grazing dairy cattle have not taken the climate under consideration. A high lactating dairy cow produces a great amount of heat which she has to dissipate in order to maintain her deep body temperature. The ways of heat dissipation are affected by several climatic factors as …
… In Karlskoga the return temperature into the district heating plant is high. They would therefore reduce the return temperature in order to extract more energy from the flue gases. The purpose of this study is to find out how the cooling and flow looks from various facilities in …
En beskrivande litteraturstudie
… for lower primary energy demand. Another benefit from combustion in units with higher capacity installed is that a higher control of emission with environmental impact is permitted. Additionally local environment change drastically when a few large supply units replace a large …
At seed-growing the aim is to produce a commodity with high germination capacity, good soundness and purity, and also slight admixture of seeds from other species. The capacity of germination and the vigour of the seeds may become impaired in consequence of mechanical damage …
Undersökning av temperatur- och luftbeteende intill höga glasfasader och i vistelsezon med golvvärme som en värmekälla
Glass has sophisticated front properties and are used as facades in high buildings. During cold periods, these glass facades could cause thermal discomfort, due to cold downdraught. Cold downdraught can be countered by placing heaters under glass surfaces. Nowadays technology …
… heating load is seasonally dependent, with a low load during periods of high ambient temperature. Thermal energy storage (TES) has the potential to shift heating loads from winter to summer, thus reducing cost and environmental impact of District Heat production. In this study …
… of low entering stock levels the purchases of forest fuels should be kept high and then decrease with increasing stock levels. With low entering stock levels, it was also made clear from the results that purchase levels should be higher than the incineration. This indicates that …
… I would like to find out if there is any air movements direct on the cows, how high/low temperature, air humidity, light intensity and noise standard inside the barn. Does Brandstadholm fulfil the rules and regulations when it comes to climate inside the barn? Could this system …
with proposals for energy technological actions based on Scania’s building 64
… with electricity. The exhaustions from the endo gasgenerators have a very high temperature, more then 300°C. If these, instead of hot water boilers,could warm the closely located water for the LPG (liquefied petroleum gas) evaporation, 125 000SEK/year can be saved. Today the hot …
Att utveckla ett gemensamt gränssnitt
Climate and environmental issues is now high on the agenda. We live in a generation that must try to solve some major environmental problems. Buildings and habitations account for approximately 40 % of Sweden's total energy today. To reduce this figure, as needed, more research …
Kan man med hjälp av lagrad värme undvika att de uppstår i betonghus?
Climate and environmental issues is now high on the agenda. We live in a generation that must try to solve some major environmental problems. Buildings and habitations account for approximately 40 % of Sweden's total energy today. To reduce this figure, as needed, more research …
… energy use in a building.At today ?s date the conventional method is to use a high flow through the heating system, which affects pressure drop and cooling of the fluid. In the mid 1960 ?s there was an engineer named Östen Sandberg that started to use a lower flow rate with a …
… those the substrate was hygienised in 70°C before added to the container. The highest concentration of organic acids was measured where the dry matter content was low, as this benefited the organic acids producing bacteria and inhibited the aerobic bacteria. When dry matter …
… liquid cooler is the way to achieve this goal. The current air cooling has high energy cost due to the high amount of power needed to power fans and heat exchangers. Using high volumes of air for cooling also leads to noise pollution. The conversion from air to liquid cooling …
En ändrad styrning av framtemperaturen
… strategy to minimize flow fluctuations in Uppsala’s district heating system. High variations in flow rate may lead to complications caused by hydraulic constraints in the district heating system. These complications, such as inadequate pressure and temperature levels, increase …
