Energy consumption of buildings depends on the daylight

Piotrowska, Ewa; Borchert, A.

doi:10.1051/e3sconf/20171401029

Cited by 14 publications

(8 citation statements)

References 1 publication

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“…The second one, which takes into account the total efficiency of the heating system, is called the final energy consumption for heating (FE H ). The third is called the non-renewable primary energy index for heating (PE H ), the value of which additionally depends on the type of fuel or energy used to cover the heating needs of the building [8,17].…”

Section: Introductionmentioning

confidence: 99%

Improving the Energy Performance of Public Buildings Equipped with Individual Gas Boilers Due to Thermal Retrofitting

et al. 2021

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The article assesses an impact of thermal retrofitting on an improvement of the energy quality of public buildings in terms of their heating. The analysis covered a group of 14 buildings, including schools, kindergartens or offices, while energy audits were carried out for 12 of them. The indications of individual gas meters were the source of actual data for the assessment of changes in energy consumption indexes in operating conditions. The analysis showed a clear improvement in the energy quality of buildings; however, the actual effects were much lower than forecasted. The average forecasted decrease in energy consumption was supposed to be 64.3%, but the measured data showed only 37.1%. The investigation confirmed that the most complex refurbishing provided the most satisfactory decrease in energy consumption (51.4% of real decrease in energy consumption), while objects with partial thermal refurbishing reached an efficiency of only 21.8%. It was stated that in operating conditions, special attention should be paid to the manner of energy use, since different indicators of energy consumption can be obtained with the same parameters of building’s balance cover. The results obtained can be further utilized in thermal-refurbishment implementation procedures. Follow-up investigations on the impact of selected parameters on energy consumption are planned.

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Section: Introductionmentioning

confidence: 99%

Improving the Energy Performance of Public Buildings Equipped with Individual Gas Boilers Due to Thermal Retrofitting

et al. 2021

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“…The Regulation of the Minister of Infrastructure and Development on the methodology to determine the energy performance of a building and energy performance certificates [6] presents in detail the calculation procedure to obtain energy performance indicators: EP (nonrenewable primary energy), EK (final energy), and EU (usable energy). This procedure has been presented by several authors recently [7][8][9][10][11][12][13][14][15]. The base to obtain EP, EK, and EU is calculated annual energy use for space heating; cooling; ventilation; domestic hot water (DHW); and, in nonresidential buildings, lighting.…”

Section: Introductionmentioning

confidence: 99%

Annual Energy Performance of an Air Handling Unit with a Cross-Flow Heat Exchanger

Michalak¹

2021

Energies

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Heat recovery from ventilation air is proven technology resulting in significant energy savings in modern buildings. The article presents an energy analysis of an air handling unit with a cross-flow heat exchanger in an office building in Poland. Measurements were taken during one year of operation, from 1 August 15 to 31 July 16, covering both heating and cooling periods. Calculated annual temperature efficiency of heat and cold recovery amounted to 65.2% and 64.6%, respectively, compared to the value of 59.5% quoted by the manufacturer. Monthly efficiency of heat recovery was from 37.6% in August to 68.7% in November, with 63.9% on average compared to 59.5% declared by the manufacturer. Cold recovery was from 63.3% in April to 72.8% in September, with 68.1% annually. Calculated recovered heat and cold amounted 25.6 MWh and 0.26 MWh, respectively. Net energy savings varied from −0.46 kWh/m2 in August, when consumption by fans exceeded savings, to 5.60 kWh/m2 in January.

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“…The FE index takes into account the types and efficiency of these systems, and the PE index additionally considers the type of fuel used and the type of energy. The FE and PE indices additionally cover the demands for the so-called auxiliary electric energy required for the technical systems considered (Piotrowska and Borchert, 2017;Tomczak and Kinash, 2016) adapted to the requirements of the National Fund for Environmental Protection and Water Management ("NF40" standard.…”

Section: Introductionmentioning

confidence: 99%

An Evaluation of the Structure of Energy Consumption in Educational Buildings in Poland After Thermal Retrofitting

Życzyńska

Suchorab

Dyś

et al. 2020

Slovak Journal of Civil Engineering

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The paper presents the structure and indices of the annual energy consumption in educational buildings subject to comprehensive thermal retrofitting. Seven buildings were analyzed; the energy consumption for heating and ventilation, hot water preparation, and built-in lighting was analyzed in each of them and, in the case of one structure, also cooling. The indices of the usable, final, and primary energy consumption were analyzed. The values calculated were compared to the requirements of the energy standards in force in Poland. The percentage shares of the above-mentioned energy demands of each of the buildings investigated are given in the total energy performance. Within the investigation, we evaluated the shares of the particular building services in the total energy consumption and determined that even after the thermal retrofitting, the energy demands for heating together with lighting are still the most significant compared to the other demands.

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Energy consumption of buildings depends on the daylight

Cited by 14 publications

References 1 publication

Improving the Energy Performance of Public Buildings Equipped with Individual Gas Boilers Due to Thermal Retrofitting

Improving the Energy Performance of Public Buildings Equipped with Individual Gas Boilers Due to Thermal Retrofitting

Annual Energy Performance of an Air Handling Unit with a Cross-Flow Heat Exchanger

An Evaluation of the Structure of Energy Consumption in Educational Buildings in Poland After Thermal Retrofitting

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