12 uppsatser
… the possibilities of connecting solar panels to existing ground source- and geothermal heat pumps that has not been adapted to solar panels. During the work process, a prototype plant has been built to compare our theory with the practical results and with our designed sizing …
… system with an exhaust air heat pump in an apartment block that already has geothermal heat pump, district heating, oil- or biofuel heated system. To determinate the profitability, a reference building in Strömstad has been used and was considered a representative of Sweden’s …
… it depends on several factors. Below 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 …
… Team has therefore been asked to investigate the possibilities to invest in geothermal- heating and cooling. If the investigation of a geothermal heating- and cooling system would provide favorable results it would be a very appropriate alternative that provides energy at low …
During installation and operation of a geothermal heat pump system leakage of an antifreezing agent can appear in a borehole and leak out in surrounding groundwater. To guarantee high quality drinking water for generations to come Sweden has dedicated some areas as water …
En beskrivande litteraturstudie
… temperatures becomes available can be seen in the four next bullets. Waste heatGeothermal heatSolar heatHeat pump Other advantages obtained with lower temperature levels in heat distribution are. Lower distribution lossesHigher electrical power efficiency in CHPIncreased …
Ekonomisk och hållbar utveckling
… heating has a lower investment cost and a higher annual cost compared with geothermal heating, which has reversed costs. The most economical option is to install geothermal heating, with one heat pump per property. It provides an annual saving of 76% of operating costs, and …
Beräkning av utnyttjningstid för en uppvärmd konstgräplan med alternativa rörplaceringar
… activities outdoors. The technique chosen to heat the plan is a type of a geothermal heating system without a heat pump. The brine, which is water with 30% ethanol, collects heat from the borehole and discharges it to a coil in the field. There is at position 11 boreholes but it …
En studie med syftet att lösa energibehovet för ett specifikt hus.
… have, since not all places have the geographic advantage of being able to use geothermal or district heating. Therefore the heating system choices will only include those that are not limited by their geographic location. The house will be built in modules which only require the …
… the extent of the drilling make it difficult to estimate total costs of the geothermal district heating plant in Gunsta. The investment costs for the plant were roughly estimated to 88 million SEK, with a production cost of 0.19 SEK/kWh and a payback time of 12 years.
… the upper floor has more separated bedrooms. The house gets its heat from a geothermal heat pump and is very well insulated. This makes the house energy efficient and it easily meets Boverket’s requirements regarding energy consumption. The second part of the work is a deeper …
Denna rapport beskriver arbetet med utvecklingen av en ny modell för kaplanturbiner. Utvecklingen bygger på två kopplade differentialekvationer som under arbetets gång anpassats och implementerats i turbinmodellen. Modellen beskriver hur vattenflöde och turbinmoment påverkas av …
