577 uppsatser · sida 17 av 39
… for oil and increased focus on fossil fuels impact on the environment the heating sector are searching for alternative fuels. Pellets are a quite new product whose production has risen exponential in recent years. Today there are small-, medium-and large-scale users, where the …
En fallstudie mellan ett passivhus- och en konventionell fastighet
… Of Sweden's energy consumption, it is about 40 percent that goes to build, heat, cool and provide lighting for their homes. In new construction it is possible to build houses with good technology which is also an unknown energy situation in the future. Passive houses have been …
En teknisk och sensorisk utvärdering
… granules in a swelled state and prevents them from breaking when exposed to heat or processing: therefore, it delays the gelatinization and decreases the stickiness of the batter. The acetylated starch delays the retrogradation since it prevents amylose from packing when …
Ett samarbete mellan ÅF och kund
… efficient measures. The first one dealt with how to install an air/water heat pump to lower a building’s use of energy.This was carried out through simulation. Therefore, a code in MATLAB was written for this purpose, and this model was used to evaluate the potential energy …
… looked in to.The project will be carried out with different calculations on heat losses from heat water circulations in a residential building with nine floors all together, including a cellar, and 23 apartments. It will be calculated for how much energy is used with these heath …
… fact that the cooling and ventilation that are needed to eliminate the excess heat from the generators are expensive. Turbo generators work with high efficiency and in this project, the main task is to simulate a generator while taking into account that the generator must be …
… minskar bränsleförbrukningen för punkt 2 i ESC cykeln med 1,4 %. WHR (Waste Heat Recovery) systemet verkningsgrad ligger på 18,4 %. Vid montering av ytterliggare en ångpanna efter turbinen för att på så vis utnyttja energin i avgasflödet, istället för bara i EGR gaserna, skulle …
En jämförelse av centralt- och lägenhetsplacerat
… consumption are expected to be tougher;therefore a comparison of two different heat recovery ventilation systems(HRV-system) was made. One system is based on a centrally placed unit that coversthe whole buildings ventilation through vertical shafts. The second system is based …
… processing methods are used. These methods are often based on some kind of heat treatments, which result in so called Malliard reactions. Expanding is one of these heat treatments, which earlier has shown to decrease the ruminal degradation of concentrates consisting of peas …
En studie av två verkliga byggnader
… total and on the economy of different components such as windows, insulation, heat exchanger and the air tightness of the climate shell. No attention was paid on the comfort factor or to the impacts on the environment. Two houses, aspiring to be passive were chosen; A big one …
Peltier element - waste heat into electricity
… to determine experimentally how good a peltier element is to convert waste heat from wood burning. Three different peltier elements were used in a comparison study. The comparison was mainly done to know how much power could be obtained from each element. Even, a circuit with a …
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… the total district energy consumption that has been divided into three parts: heat energy losses (the actual heating requirements), the heating of domestic hot water and heating energy consumption for the controlled ventilation. Three different residential areas that were built …
… energy use in apartment buildings save been identified. Areas of focus are heating, ventilation, hot water and electricity. Several techniques have been explored within each focus area and applied to an apartment building. When applying the model on the current property several …
… in Sweden are solar cells and solar collectors which produce electricity and heat respectively. This report aims to investigate whether an investment in any of these systems would prove to be economically beneficial at Kvarnholmen, a district under construction in eastern Nacka …
Med hänsyn till elprisets variationer
… methane production, combined methane- and pellet production, seasonal heating storages in caverns and pit heat storages and condensing tail. Using Excel and Matlab, the prerequisites for investment costs, revenues and expenses were calculated. What affects the price of …
