In many modern buildings, different monitoring and control systems are used, but majority of them are not directly connected with the energy consumption optimisation. This paper presents a concept of an integrated performance monitoring system for promotion of energy awareness in buildings. The reference architecture of the envisioned system evolved from the traditional management structure, plan-do-check-act model. Traditional plan-do-check-act model has been upgraded with the integration of prediction engine, knowledge repository and modern scientific approaches for supporting energy awareness including early warning, optimisation and supervision. The proposed concept is constituted upon three modules: (1) data acquisition and processing, (2) knowledge repository, (3) performance monitoring system including prediction engine, consumption modelling, emissions calculation and decision support. The concept of three modules evolved from the idea to enrich existing solutions with the awareness about possible future abnormal situations and to enable preventive actions. Presented case study represents a repeatable application of the energy cost centres based modelling of energy consumption in educational and research buildings by using neuro-fuzzy modelling approach. Initial testing results are indicating the potential of electricity savings up to 15% enabled by visualisation and awareness about electricity consumption
COBISS.SI-ID: 29264423
This paper presents a concept of interactive and comprehensive platform based on advanced metering infrastructure for exchanging information on energy consumption and consequently on energy efficiency in urban and industrial environment which can serve as powerful tool for monitoring of progress in transition toward low carbon society. Proposed concept aims at supporting energy utilities in optimizing energy performance of both supply and demand side aspect of their work and have a potential to fill the gap and help in harmonization of interests between the energy utilities, energy service providers, local energy agencies and citizens. The proposed concept should be realized as a platform with the modular architecture, allowing future expansion of user%s portfolio and inventory management (new energy efficiency measures, technologies, different industries, urban districts and regions).
COBISS.SI-ID: 28296999
The transfer of 238U and 226Ra to Chinese cabbage (Brassica rapa L. subsp. pekinensis (Lour.) Hanelt) was investigated from soils contaminated with uranium-mill tailings (UMT) by means of a pot experiment in laboratory-based conditions applying different levels of soil contamination under various growing conditions. Activity concentrations for 226Ra in Chinese cabbage varied from 56-276, 156-502 and 277-877 Bq kg-1 dry mass for 20, 40 and 60 - of UMT content in the soil, respectively, and for 238U from 1.0-2.3 and 2.3-4.7 Bq kg-1 dry mass for 40 and 60 - of UMT content in the soil, respectively. The results showed increased accumulation of 226Ra and low accumulation of 238U in cabbage leaves in more contaminated soil.
COBISS.SI-ID: 28785447
A novel method for determination of Pb-210 activity concentration using a liquid scintillation counter (LSC) in environmental samples is presented. After radiochemical separation of Pb-210 on Eichrom Sr Resin column, the decay product Bi-210 starts to in-grow and interfere with the Pb-210 during measurement with LSC. Instead of eliminating this interference, a novel method utilizes Bi-210 in-growth to improve the detection efficiency and subsequently to lower the minimum detectable activity (MDA). This allows for substantial reduction of the MDA compared to conventional methods.
COBISS.SI-ID: 29159463
This article deals with the effect of wind with its characteristics on the longitudinal ventilation of a road tunnel as a key segment of fire safety. Using CFD simulations, the influence of wind gusts, which differ and is more difficult to define than the influence of a constant wind on tunnel ventilation, is researched in more detail. On the basis of the simulation results, which have been validated with real measures, the findings are presented regarding the importance of taking into account the characteristics of non-stationary wind to ensure the adequate safety of tunnel users in the event of a fire, as well as of fire-fighting units during intervention.
COBISS.SI-ID: 14099483