Search results for "energialähteet"
showing 10 items of 34 documents
Thermal performance and microclimate test methods for flat-plate solar thermal collectors
2012
In this Master’s thesis testing methods, experimental setups and data evaluation procedures for flat-plate solar thermal collectors are presented. An official quasi-dynamic test method according to the EU standard EN 12975 for evaluating the collector’s thermal performance is described, and its applicability to an existing experimental setup is evaluated. The general practicality of this setup is also reviewed. Furthermore, a second experimental setup is designed to monitor the inside conditions, or microclimate, of a solar thermal collector, in order to assess the frequency of condensation occurrence inside the collector. This work’s results include that the existing thermal performance se…
Customer benefits of demand-side management in the Nordic electricity market
2016
The increasing share of renewable energy sources is likely to lead to price effects in Nordic electricity market, resulting especially in increased volatility of spot and imbalance prices. The greater price volatility and amount of required balancing power increase the need for Demand-Side Management (DSM) in the electricity market and may as well increase the financial benefits of DSM participants. In this research I study the DSM in electricity mar-ket and evaluate how large the financial benefits of DSM participants could be. Monte Carlo simulation method is used to simulate imbalance prices with different volatilities for Finland and Sweden. The results show that increasing volatility m…
The adoption of photovoltaic micro production systems in Finland
2016
A sustainable supply of energy is one of the most important requirements in order to achieve sustainable development. By using renewable resources society is not dependent on depleting reserves, but instead can have an inexhaustible source of clean energy. The rapid development of photovoltaics has led to lowered prices and increased efficiency making them more attractive alternative as a source of household electricity. Although governments play a key role in setting the constraints of how renewable energy is adopted, the wide-spread adoption of distributed electricity production ultimately depends on consumer decisions to buy them. This study examined the adoption process of photovoltaic …
Net-zero energy technical shelter
2011
Technical shelter for storing electronic and technical equipments has high indoor heat dissipation rate, and cooling load exists almost all year around. Energy consumption of cooling system takes majority of entire energy use. Our project aims in reducing the energy consumption by proper design of building envelop and optimal control of cooling system. Both experimental measurements and computer simulation are carried out to analyze the indoor climate and energy performance of technical shelter in different conditions. The experiments are made on a standard technical shelter. Vertical temperature gradient and air flow rate are measured by thermocouples and tracer gas technology. Energy bala…
Dependence between renewable energy related critical metal futures and producer equity markets across varying market conditions
2022
We study the dependence of renewable energy production-related critical metal futures and producer equity returns, compared to the non-renewable energy (oil and natural gas) and some other globally relevant commodity markets. We find different asymmetric and symmetric dependencies in these commodity markets. The dependence is asymmetric in the most important critical metal markets, i.e., of silver, copper, and platinum. Still, surprisingly, for example, in the oil market, the relationship is symmetric, and no relationship is found in the natural gas market. Furthermore, the oil and agricultural markets have homogenous dependence structures in most market conditions, so the information trans…
Understanding the scaling-up of community energy niches through Strategic Niche Management Theory: insights from Finland
2018
The growing phenomenon of civil society involvement in renewable energy generation has attracted researchers’ interest. However, rather little is known of how a diverse and relatively small sector such as community energy could scale up and promote a change in energy production. We examine this issue through the lens of Strategic Niche Management (SNM) and conceptualize community energy as a socio-technical niche that holds the potential to promote a transition to renewable energy. Drawing on interview data with members of community energy projects and experts in Finland, we identify different types of community energy projects and the factors that may prevent them from scaling up. The stud…
Potential applications of nanotechnology in bioenergy
2011
Nanotechnology has an increasingly large impact on a wide range of industries, but its current use in the production of electricity and heat from biomass is limited. This thesis examined the potential impact of nanotechnology on bioenergy production through a literature review and interviews with industry members. Current technologies and methods in use were reviewed, with a focus on fuel handling and combustion systems. Areas in which problems existed were identified and nanotechnologies with properties relevant to those problems examined. The major nanotechnology areas which were reviewed are nanostructured coatings (wear resistant, corrosion resistant, low friction and anti-icing), nanom…
Impact of micro hydropower (MHP) based electrification on rural livelihoods : case study Nam Mong in Luang Prabang province, Lao PDR
2009
Bioenergian potentiaalitarkastelu Pirkanmaan alueelta - energiaomavaraisuuden jäljillä
2011
Energiaomavaraisuuteen ei Suomessa ole juurikaan kiinnitetty huomiota edullisen tuontienergian aikana. Kuitenkin useat kansainväliset tahot painottavat tarvetta siirtyä kohti energiaomavaraisempaa ja hajautetumpaa energiantuotannon rakennetta. Suomen uusiutuvat energiavarat ovat monipuoliset, ja niiden avulla energiaomavaraisuutta olisi mahdollista parantaa merkittävästi. Tämän pro gradun tarkoituksena oli tarkastella energiaomavaraisuuden tilaa Pirkanmaalta valittujen maaseutuvaltaisten kuntien kautta. Työssä selvitettiin tarkastelualueen tämän hetkinen energiantuotannon infrastruktuuri sekä energiantuotannon ja -kulutuksen rakenteita suhteessa paikallisiin bioenergiavaroihin. Bioenergian …
Hajautetun energiajärjestelmän toteutusmahdollisuudet virtausakkuteknologialla
2016
Työssä tutkittiin virtausakkuteknologian soveltuvuutta osana hajautetun energiajärjestelmän toteutusta. Hajautettu virtausakku on laaja energiaverkosto, joka mahdollistaa energiansiirron ja -varastoinnin. Energia varastoidaan virtausakun elektrolyyttiin, jota säilytetään kaukolämpöverkoston kaltaisessa laajassa putkiverkostossa. Elektrolyyttiä siirretään putkiverkostossa maan alla pumppaamalla ja hajautetun akun lataaminen ja purkaminen suoritetaan tuotannon ja kulutuksen yhteydessä kennopinojen välityksellä. Tutkimus keskittyi hajautetun virtausakun soveltuvuuteen uusiutuvan energian varastoinnissa sekä kulutuksen teho-optimointiin huipunleikkauksessa. Tutkimusta varten ohjelmoitiin Matlab…