Indoor Air Quality in Multi-Apartment Buildings before and after Renovation

Dimdiņa, Ilze; Krūmiņš, Ēriks; Lešinskis, Arturs

doi:10.1515/cons-2014-0006

Cited by 4 publications

(4 citation statements)

References 2 publications

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“…The average relative humidity indoors decreases, when the outdoor air temperature is decreasing, because of the reduced absolute moisture content of ventilation supply air. Cold climate conditions in rooms with adequate ventilation to ensure CO2 levels up to 1000ppm, characterized by the relative humidity indoors, on average, less than 30% [16].…”

Section: Discussionmentioning

confidence: 99%

Case Study of Indoor Air Quality and Energy Efficiency in Passive House in Latvia

Pļavenieks

Lešinskis

Dimdiņa

2015

Proceedings of REHVA Annual Conference "Advanced HVAC and Natural Gas Technologies"

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-This paper presents a case study of a residential passive house in Latvia. Indoor air quality was measured during autumn and winter. The main objective of the study is to determine indoor air quality parameters in the new passive house building-air temperature, relative humidity and CO2 level. This paper will be illustrated with pictures, tables, and construction elements of the passive house.Keywords -indoor air quality, passive houses, air handling units, energy efficiency.

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Section: Discussionmentioning

confidence: 99%

Case Study of Indoor Air Quality and Energy Efficiency in Passive House in Latvia

Pļavenieks

Lešinskis

Dimdiņa

2015

Proceedings of REHVA Annual Conference "Advanced HVAC and Natural Gas Technologies"

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“…The field survey was conducted for 20 one-bedroom and two-bedroom units where residents did renovation in the previous 6 month at The Greens in Dubai [54]. In addition to on-site measurement, resident interviews and observations were also conducted [55]. The main purpose of this study is to understand the actual status, and no factors (area or number of families) were considered other than the scope of 'apartments that have been renovated within last 6 month' when selecting the survey subjects [56,57].…”

Section: Methodsmentioning

confidence: 99%

Evaluating the Indoor Air Quality after Renovation at the Greens in Dubai, United Arab Emirates

Awad

Jung

2021

Buildings

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The Public Health and Safety Department of Dubai Municipality had evaluated the indoor air quality in public buildings in 2013, then established the IAQ (Indoor Air Quality) regulation. Even though IAQ in public building is in control, indoor air pollution in new and renovated housing is still very problematic. The objective of this paper is to measure the indoor air quality of the residential unit in an apartment after renovation to evaluate the actual condition and to analyze the influential factors. As a methodology, field measurements, resident interviews, and observations were conducted for 20 residential units to investigate basic information, renovation contents, ventilation characteristics, and SBS (Sick Building Syndrome) symptoms. The results showed that renovation related to the indoor air quality was the replacement of finishing materials. It was statistically proven that the average CO2 for each house was 683–2309.4 ppm, and 15 houses exceeded the WHO IAQ standards. TVOC had an average concentration of 0–3.0 ppm per house, exceeding the standard in 10 houses. Formaldehyde (CH2O) had an average concentration of 0–1.02 ppm per house, exceeding the WHO IAQ standard (0.1 ppm) in 12 houses. However, even though the indoor air quality was polluted, the residents were hardly aware of it based on subjective response survey. As the amount of renovation increases, the concentration of formaldehyde (CH2O) increases significantly, and excessive renovation should be avoided. This study will serve as a basic dataset to suggest that the new IAQ regulation not be compulsory for residents; rather, they must induce contractors with stipulation to maintain IAQ during and after renovation.

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“…When looking at Latvian official statistical 2 data regarding new and reconstructed residential buildings [9], [10] during the period of 2010 to 2021 (Table 1), one can conclude that only 5.5 % new buildings were built and 3.2 % were reconstructed from the total area of residential buildings during this period. One-dwelling buildings dominate among new buildings (9.1 %) and shared houses for different social groups among reconstructed ones (20.4 %).…”

Section: Current Situation and Problemsmentioning

confidence: 99%

Energy Performance Aspects of Residential Buildings in Latvia

Kundziņa

Geipele

Auders

et al. 2023

Latvian Journal of Physics and Technical Sciences

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Measures on increasing energy efficiency is a way for ensuring sustainable energy supply, reducing emission of gases causing the greenhouse effect, improving safety of energy supply, decreasing dependence on import of energy and promoting the EU competitiveness. Improvement of energy performance of buildings as a direction of activities is provided in national policy planning documents of major importance such as the National Energy and Climate Plan for 2021–2030 and the Strategy of Latvia for the Achievement of Climate Neutrality by 2050. Residential buildings form a considerable part of the total Latvian housing stock – 27 % according to the number of buildings and 44 % according to their area. Therefore, the increase of energy performance of residential buildings is very significant for achieving the national energy saving targets, i.e. a cumulative savings of final energy consumption of about 6 PJ by 2030. The research analyses the sector of residential buildings, their statistical data, the energy consumption and requirements of the energy performance standards. To characterise this sector more comprehensively, information has been evaluated on energy performance certificates of residential buildings issued during the period from 2016 to 2021, allowing the authors to make general conclusions on the energy performance level of residential buildings and to provide proposals for increasing their energy efficiency.

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Indoor Air Quality in Multi-Apartment Buildings before and after Renovation

Cited by 4 publications

References 2 publications

Case Study of Indoor Air Quality and Energy Efficiency in Passive House in Latvia

Case Study of Indoor Air Quality and Energy Efficiency in Passive House in Latvia

Evaluating the Indoor Air Quality after Renovation at the Greens in Dubai, United Arab Emirates

Energy Performance Aspects of Residential Buildings in Latvia

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