14 hasil untuk "Simson Raimo"
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Artikel Jurnal Teks lengkap
Performance of demand-controlled heat recovery ventilation systems with central and zonal control in a single-family house
Improving ventilation efficiency in residential buildings is crucial to reducing energy consumption while maintaining indoor air quality. This study investigates three demand-controlled ventilation (DCV) strategies compared to a traditional constant airflow (CAV) system in a single-family house…
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Dynamic Modeling and Experimental Validation of Floor Cooling Systems for Overheating Assessment and Condensation Risk Considerations in Residential Buildings
This study presents the development and experimental validation of a dynamic underfloor cooling system model aimed at improving the understanding of system-level thermal behavior in residential buildings. In the context of increasing summer heatwaves and overheating problems, a robust cooling…
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Redefining cost-optimal nZEB levels for new residential buildings
In the member states of the European Union (EU), nearly-Zero Energy Buildings (nZEB) are becoming mandatory building practice in 2021. It is stated, that nZEB should be cost-optimal and the energy performance levels should be re-defined after every five years. We conducted cost-optimality analyses…
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Measured and simulated energy performance of OLK NZEB with heat pump and energy piles in Hämeenlinna
In this work, measured energy use of the building space heating, ventilation supply air heating, appliances and lighting is compared against simulated energy use modelled in IDA ICE. As built energy need and detailed measured input data is applied in building model calibration procedure. Calibrated…
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A Comparative Analysis of NZEB Energy Performance Requirements for Residential Buildings in Denmark, Estonia and Finland
Direct comparison of building energy performance levels between countries is usually not possible due to differences in climatic conditions, calculation methods, primary energy (PE) weighing factors and input data. This paper aims to analyse performance requirements and calculation methodology for…
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Artikel Jurnal Teks lengkap
The Impact of Infiltration on Heating Systems Dimensioning in Estonian Climate
In this study we analysed the climatic conditions for infiltration estimation, different calculation methods and infiltration impact on heat load for heating systems dimensioning. To determine the wind conditions at low air temperatures of the coastal- and inland climatic zones in Estonia, 42 years…
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Analysis of Circuit Connections and Control Strategies for Residential Air-to-Water Heat Pump Systems
Abstract. This study investigates the impact of secondary circuit hydraulic connection schemes and control strategies on the performance of residential air-to-water heat pump systems providing space heating and domestic hot water (DHW). Five configurations (parallel-connected 200L buffer tank; 200L…
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Danish, Estonian and Finnish NZEB requirements comparison with European Commission recommendations for office buildings in Nordic and Oceanic climates
Direct comparison of building energy performance levels between countries is usually not possible due to differences in climatic conditions, calculation methods, primary energy (PE) factors and input data. The aim of this paper is to analyse the differences in nearly zero energy office buildings…
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Respiratory infection risk based ventilation and room conditioning design method with year-round thermal comfort control in modern office buildings
The new decade will be a major challenge for built environment to satisfy building users and owners demands for superior IEQ in the work environment and tackle infection risk issues brought by SARS-CoV-2 pandemic. We collected thermal comfort and IAQ data from modern Estonian office buildings…
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Evaluating perceived stuffy air complaints through tracer gas experiments in a modern educational building in Estonia
This paper investigates ventilation-related complaints concerning stuffy air and inadequate air distribution in a modern educational building in Estonia. Ventilation effectiveness was assessed using CO2 tracer gas measurements in a classroom, an office, and two halls. The results highlight key…
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Artikel Jurnal Teks lengkap
Ventilation effectiveness in classroom infection risk control
The benefits of a good ventilation in classrooms are a well-studied topic regarding health and learning outcomes. However, many studies still show poor results regarding air quality, air change rate and air velocities. In this paper, typical Estonian classroom air distribution solutions were…
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Balancing Cooling and Comfort: Lessons from Fan Coil Units in Estonia
Abstract. This study examines the performance of fan coil units (FCUs) as active cooling devices during the cooling season across six case settings, located in Estonia. Uncomfortable thermal conditions are known to impair cognitive performance, reducing concentration, memory retention, and reaction…
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Artikel Jurnal Teks lengkap
Impinging jet duct diffuser ventilation effectiveness benchmarking with mixing ventilation in a mock-up classroom
The benefits of effective classroom ventilation for health and learning outcomes are well known. However, studies continue to report inadequate air quality, insufficient air change rates, and too high air velocities. This study investigated classroom air distribution solutions in the ventilation…
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Artikel Jurnal Teks lengkap
PCSP’s Diagonal Tie Connectors Thermal Bridges Impact on Energy Performance and Operational Cost: Case Study of a High-Rise Residential Building in Estonia
This study analyses the effect of air circulation around diagonal tie connectors in precast sandwich panels on heating energy demand, energy performance value and heating costs of a sample residential building. Dynamic simulations were performed using 4 different climatic boundary conditions…