61 uppsatser · sida 2 av 5
… calculation was made. The payback period was calculated for a new wood powder boiler if it was to replace an existing oil boiler. The study includes a qualitative research interview, which was addressed to the largest users of fuel oil and coal for district heating. Policy …
… is a comparison between district heating, geothermal heat pump and electric boiler from an economic standpoint. In a previous report appears district heating and geothermal heat pump as the best options. The analysis in this work, district heating appears as the best system for …
… the winter months, which necessitates an additional energy source. A pellet boiler is a great addition to collectors because it provides a high efficiency at sustained combustion, which is the case during the winter months. In a theoretical comparison over a 25 yr. period, solar …
… program estimating the profitability of converting a peak-load oil-fired boiler to pellets. To convert an oil-fired boiler to pellets a new fuel handling system must be designed. Changes also have to be made to some other components. Since there are many different techniques for …
En kvantitativ studie gällande hållbara uppvärmningsalternativ på en skärgårdsö
… a ground or air source, a water heat pump, or a total solution with a pellet boiler which includes heating and hot water for both the guesthouse and cottages. The estimated cost for heating, hot water, and electricity for the cottages is 220 000 SEK. The required annual energy …
… are not fully utilized. The factory is recommended to invest in a new kerosene boiler and a roaster boiler for combustion of coconut waste. Furthermore, the biogas should be combusted in a boiler instead of in the now used combined heat and power engine (CHP), for improved …
… + 2 fly-ash samples) was then performed on the samples. A sample from each boiler was sent for BETanalysis. The results from the analysis above were compared to earlier studies conducted on bio-fuel plants in order to investigate what might have deactivated the catalyst samples …
… composition of bio fuel ash and the deposit growth in a bio fuel fired boiler.” The purpose of this degree thesis was to avoid melted deposit growth in the bio fuel fired boiler at ENA Kraft in Enköping. Potassium and sodium are known to lower the melting point of bio fuel ashes …
… has introduced a new tecnique that gives an external generation of steam after boilers. The concept is built on an adiabatic pressure drop of the saturated liquid in a so called Flashbox which makes a small part of the liquid to evaporate. The generated steam is lead into a …
with proposals for energy technological actions based on Scania’s building 64
… 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 water boilers are heated with electricity. If the washing …
… have a maximum power need of 70 MW. Together with a 15 MW wood powder fired boiler and a 55 MW oil fired boiler, a CHP plant of 40 MW will satisfy the demands of Enköping. Building a new CHP plant involves large costs. To finance the additional cost of a new CHP plant in 2015 …
Hållbara uppvärmningsalternativ för vandrarhemmet på Finnhamn
… systems that can replace the existing heating system of Utsikten (an oil-fired boiler and electricity heaters) to a system with renewable energy. The alternative system that this project focuses on is a system of solar collectors combined with a wood chip boiler. Information for …
Ekonomi, miljö och drift
… and choosing between the four systems - district heating, pellet-fired boiler, geothermal heating and solar heating. The comparison aims at investigate which of the systems that will suit the house best, based on given conditions. Solar heating could be eliminated since the …
En studie om uppvärmning med pellets och flis
… Wärdshus, a guest house located in the island, currently uses an oil-fired boiler as a heating system. The aim of this thesis is to investigate whether wood chips or pellets is, from a sustainability standpoint, a suitable heating method for the guest house. A literature review …
En jämförelse av olika investeringsalternativ och deras ekonomiska påverkanvid införskaffning av ny bostad.
… house. The majority of the cheapest calculation cases when using the pellet boiler was represented by calculation cases with the traditional house and the calculations with the use of the oil-fired boiler, the majority were low-energy houses. Note that some exceptional cases …
