73 uppsatser · sida 5 av 5
… The model is described as a linear thermodynamic grey-box model withflow varying parameters, showing good results in validation.The model provides a simulation environment during the controller design, which isfocused around the development of linear regulators with the exhaust …
Analys av fem nybyggnationer
… was shown to be due to weak estimations of hot water consumption, ventilation flow rates, leakage and household electricity. The consequences of the difference between simulated and measured energy consumption can be translated to SEK 8.5 million and 4.5 thousand tons of carbon …
Simulering och jämförelse av gamla och nya system
… cases were older and newer ventilation systems, with and without return air flow, older and newer building envelopes and how the indoor climate and the energy demand is affected by the swimming pool covered or not covered during the night. The biggest difference in heat demand …
Resteffektkylning av mellanlager för använt kärnbränsle (CLAB) Oskarshamn
… motors, where the water is regulated by mechanical valves to the desired flow. After the upgrade, the engines will be powered by AC drives that can control the pumps by changing the rotational speed and thus change the water's cooling effect on the nuclear fuel. In this study, I …
… different types of projects. Everything from simple systems with fixed brine flow with only one supply air and exhaust air unit to systems with several units, various types of control possibilities and an addition of excess heat from, for example, a room containing computer …
… concrete box installed to prevent thermal energy from the surrounding soil to flow towards the lower temperature regions within the storage. The three different filling materials were dry saudi sand, water saturated saudi sand and the filling material used by the client for …
… simulerats i en virtuell vindtunnel med hjälp av datorprogrammet SolidWorks Flow Simulation. Flera olika utblåsrör i varierande storlekar samt olika former har testats för att avgöra om ändringar kan förbättra prestandan ytterligare. Simulationsresultat visar att det går att …
… American standards werestudied. Analytical and numerical solutions, involving flow simulation, were deemed to berather difficult and beyond the scoop of this project. Thus the problems had to be solved byusing experimental methods. Interviews with personnel involved in leak …
En förstudie av vilka energieffektiviserande åtgärdersom kan göras på pumpstationer och reningsverk
… This involves replacement of a ventilation unit, installation of low-flow nozzles and better management of the mechanical chiller. Overall, the measures are expected to reduce heating requirements by 223 MWh/year (17%) and reduce electricity demand by 66 MWh / year (5%) …
Åtgärdsförslag för ett minskat energibehov i fastigheten Gävle Söder 17:10
… This involves replacement of a ventilation unit, installation of low-flow nozzles and better management of the mechanical chiller. Overall, the measures are expected to reduce heating requirements by 223 MWh/year (17%) and reduce electricity demand by 66 MWh / year (5%) …
… cases be explained by minor differences in model choices, mostly concerning flow patterns and heat transfer. APROS has many similarities with COPTA regarding the main calculation and modeling methods but APROS can in most cases be seen as the more sophisticated software with …
växthusgaser, energi- och resursanvändning i modellstudie
… reached by adjusting control parameters such as aeration, internal recycle flow, carbon addition etc. Thus the same effluent load of ammonium and total nitrogen were reached for all scenarios compared to the reference. The simulated results showed that the total use of energy …
… network, and is also given the opportunity to buy heat at shortfall. The flow temperature of the water (60?C) that a prosumer wants to deliver to the network falls below the temperatures on the existing network, which is about 100?C but can also be higher than that. This is the …
