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Electric power systems are undergoing huge changes due to the shift from conventional power production to more renewable-based generation like solar and wind. This is primarily driven by the need to mitigate climate change by reducing CO2 emissions. The shift to more generation from solar and wind will affect the dynamical behaviour of power systems, and consequently how they should be controlled.
It is well known that the electricity price varies between days but also withinthe day, sometimes even resulting in negative prices. Flexible production unitscould take advantage of those variations by adapting the production accordingly. However, few studies exists that compare the cost effectiveness of different types of production units while taking these within day price variations into accoun
Alternative fuels have been proposed as a means for future energy-secure and environmentally sustainable transportation. This review and benchmarking show that several of the alternative fuels (e.g. methanol, ethanol, higher alcohols, RME, HVO, DME, and biogas/CNG) work well with several different engine concepts such as conventional SI, DICI, and dual fuel, and with the emerging concepts HCCI, RC
The utilization of CO2 in various products and services must be carefully assessed in order to achieve reduced CO2 emissions and simultaneously to add to the net economic benefit of society. In this paper, a framework for the assessment of CO2 utilization options in the chemical industry is outlined in which the total CO2 emission is estimated in four steps. First, the processes under study are su
With good design practices and life-cycle cost optimization, the specific fan power for individual (SFPI) fans will be between 0.5 and 1 kW m−3−1. Data from nearly 1000 audited fans in Sweden show that the average measured SFPI weighted by drawn motor power is 1.5 kW m−3 s−1 and the situation appears to be similar in other countries. Contract forms used by Swedish builders and consultants' design
The European Union’s aim to decarbonize the building stock by 2050 requires significant reductions in the energy use for space heating and cooling. One such solution to decarbonization could be energy sharing between buildings. This paper presents the potential for energy saving and subsequent reduction in carbon emission with a low temperature district network in an energy community based in Malm
In the manufacturing industry, a major concern persists—the historical entanglement of this sector with environmental issues. Climate change and resource depletion cast a shadow over traditional practices, demanding a paradigm shift. As our planet grapples with these challenges, the imperative for sustainable manufacturing practices becomes undeniable. Futuristic Technology for Sustainable Manufac
Geothermal energy is classified as a renewable energy source and it utilizes the heat generated in the earth primarily from the natural radioactive decay of isotopes of uranium, thorium and potassium. Heat is extracted from the earth to generate geothermal energy via a carrier, usually water occurring either in the liquid or steam phase. In the late 19th century and the early 20th century, the fir
There is one primary goal and several secondary goals to fulfill when designing a heating, ventilation and air conditioning (HVAC) system. The main goal is to create an indoor climate that satisfies the user and this should be achieved in the most energy efficient way and with a system that also function in a long-term perspective. Higher supply air flow have the potential of increasing office wor
Pursuing energy efficiency as a national policy objective is a cross-cutting challenge for governments. The outcomes expressed in proxies such as energy intensity of the economy and/or energy productivity are linked to so many variables and interventions operating at different levels; from macroeconomic conditions, technology development and path dependency, energy supply and pricing regimes to in
Sugar esters (SEs), value-added products derived from inexpensive renewable feedstocks (sugars and fatty acids), are biobased and biocompatible surfactants employed in foods, personal care products, and pharmaceuticals. They also possess antimicrobial and other biological activities. Their market size is projected to be $74.6 million by 2020. SEs are difficult to synthesize due to the poor miscibi
Thermally insulating historic buildings is imperative in order to reduce energy demands of the existing building stock. Therefore an insulation material is needed that improves energy efficiency while being compatible with the existing structure from a hygrothermal, aesthetic and cultural heritage perspective. Hemp-lime is a building material that consists of on a combination of hemp shiv, the woo
Diana Karpman's project focuses on the pathogenesis of renal diseases and the infectious, inflammatory and prothrombotic mechanisms leading to acute and chronic renal failure. Novel mechanisms of disease propagation via blood-borne and cell-derived microvesicles as well as complement and kinin system activation are investigated. The diseases investigated are enterohemorrhagic Escherichia coli (EHE
Rumsakustik: Jämförelser mellan deterministiska och statiska modeller. Utveckling av mätmetodik. Strukturakustik: Strukturdynamik vid audiofrekvenser. Utveckling av käll- och transmissionsbeskrivningar för strukturer i byggnader, farkoster och maskiner. Byggnadsakustik: Ljudisolering hos lätta väggar och bjälklag.
