Estimation of Energy Profile and Possible Energy Savings of Unclassified Buildings

Geikins, Aleksandrs; Borodiņecs, Anatolijs; Jacnevs, Vladislavs

doi:10.3390/buildings12070974

Cited by 4 publications

(2 citation statements)

References 32 publications

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“…Moreover, the focus on building energy efficiency extends far beyond the boundaries of a building stock and plays a pivotal role in promoting long-term economic and social progress on both a national and regional scale, and serves as a catalyst for sustainable development, contributing to energy conservation, reduced environmental impact, and enhanced living standards within communities [10][11][12][13]. An extensive number of the current building stock across the Energies 2023, 16, 7483 2 of 15 EU regions has been constructed before the 2000s and is in need of deep renovation [14][15][16][17]. Energy renovation and thermal retrofitting of these buildings could significantly enhance the overall energy efficiency of the building stock in the corresponding region [18,19].…”

Section: Introductionmentioning

confidence: 99%

Cold Climate Challenges: Analysis of Heat Recovery Efficiency in Ventilation Systems

Prozuments,

Zemitis,

Bulanovs

2023

Energies

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As building energy consumption gains ever-increasing attention worldwide, the focus on addressing it through the examination and optimization of efficient heat recovery solutions continues to intensify. With well-insulated and airtight buildings, the proportion of heating needs attributed to ventilation is growing, leading to the widespread integration and optimization of heat recovery solutions in mechanical ventilation systems. Heat recovery in ventilation is a highly efficient strategy for reducing heat losses and conserving energy. This study involves the investigation of a ventilation unit installed in an apartment situated in Riga, Latvia, as a practical examination of heat recovery system efficiency within the Latvian climate conditions, representing a cold climate region. The objective of this study was to examine the heat recovery efficiency of the ventilation system in the Latvian climate with variable outdoor and exhaust air parameters, given that the dry heat recovery efficiency is different from the actual heat recovery efficiency. The ventilation unit was equipped with a plate heat exchanger at an airflow rate of 105 m3/h. To evaluate heat recovery efficiency, extensive measurements of air temperature and relative humidity were conducted. The collected data was analyzed, employing statistical regression analysis to ensure measurement reliability and assess correlations. The findings indicated a strong correlation between variables such as heat content, moisture content, and sensible air parameters. It was observed that the actual heat recovery efficiency was 6% higher than the calculated dry efficiency, emphasizing the importance of considering real-world conditions in heat recovery assessments. Additionally, regression analysis demonstrated a positive linear correlation with a coefficient of 0.77, highlighting the dependency between actual measurements and the theoretical model. These quantitative outcomes provide essential insights for optimizing heat recovery systems and enhancing energy-efficient ventilation practices, especially in cold climate environments. Moreover, this study highlights the strong correlation between variables such as heat content, moisture content, and sensible air parameters. Findings offer essential insights for optimizing heat recovery systems and enhancing energy-efficient ventilation practices, especially in cold climate environments.

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Section: Introductionmentioning

confidence: 99%

Cold Climate Challenges: Analysis of Heat Recovery Efficiency in Ventilation Systems

Prozuments,

Zemitis,

Bulanovs

2023

Energies

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“…A partial renovation of a residential building is primarily related to insulating the building envelope or retrofitting the heating system, while the full renovation of the building includes both the insulation of the building envelope and the modernization of the heating system [10][11][12]. It should be noted that before implementing measures to upgrade a building's energy efficiency, what measures stipulate higher feasibility in energy consumption reduction and economic terms have to be thoroughly evaluated [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Evaluating Reduction in Thermal Energy Consumption across Renovated Buildings in Latvia and Lithuania

Prozuments,

Borodinecs,

Zaharovs

et al. 2023

Buildings

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Currently, the optimization of thermal energy consumption in buildings is considered a suitable alternative in the construction of new buildings, as a result of which the overall energy efficiency of the building increases. Thus, this study examined the efficiency and efficacy of different building renovation packages conducted across several buildings in Latvia and in Lithuania (across a larger building stock). In the first section of this study, 13 multi-apartment residential houses with 3 building renovation packages have been investigated in the city of Daugavpils, Latvia, in order to determine the actual reduction in heat energy consumption across each of the renovation implementation packages. The study findings indicate that changes in Latvian building regulations regarding insulation thickness did not significantly impact thermal energy consumption in fully renovated buildings. However, the combination of facade renovations, upgraded heating systems, and improved ventilation systems resulted in substantial energy savings, with an average reduction of 50.59% in thermal energy consumption for space heating across the reviewed multi-apartment residential building stock. In the following section of this study, the impact of the Energy Performance of Buildings Directive (EPBD) on building energy efficiency in Lithuania has been examined. The results show that over a 10-year period in the 2000s, Lithuanian building stock experienced a 20% increase in energy efficiency, followed by an additional 6.3% increase between 2010 and 2016. The mandatory requirement for renovated buildings to achieve a minimum energy efficiency class has resulted in significant reductions in energy consumption for heating purposes. The findings underscore the effectiveness of building renovation packages and the EPBD regulations in enhancing energy efficiency and promoting sustainable building practices. The importance of heat metering, consideration of indoor air temperature, and the need to address indoor air quality during renovations were also highlighted.

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A new functionality for the digital building logbook: Assessing the progress of decarbonisation of national building sectors

Gómez-Gil,

Espinosa-Fernández,

López-Mesa

2024

Environmental Impact Assessment Review

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Estimation of Energy Profile and Possible Energy Savings of Unclassified Buildings

Cited by 4 publications

References 32 publications

Cold Climate Challenges: Analysis of Heat Recovery Efficiency in Ventilation Systems

Cold Climate Challenges: Analysis of Heat Recovery Efficiency in Ventilation Systems

Evaluating Reduction in Thermal Energy Consumption across Renovated Buildings in Latvia and Lithuania

A new functionality for the digital building logbook: Assessing the progress of decarbonisation of national building sectors

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