Investigating the potential impact of a compartmentalization and ventilation system retrofit strategy on energy use in high-rise residential buildings

2019 ◽  
Vol 199 ◽  
pp. 20-28 ◽  
Author(s):  
Matt Carlsson ◽  
Marianne Touchie ◽  
Russell Richman
Keyword(s):  
Energy Use ◽  
Residential Buildings ◽  
Ventilation System ◽  
High Rise ◽  
Potential Impact

scholarly journals Impact of a compartmentalization and ventilation system retrofit strategy on energy use in high-rise residential buildings

2021 ◽  
Author(s):  
Mathew Carlsson
Keyword(s):  
Energy Use ◽  
Residential Buildings ◽  
Ventilation System ◽  
Ghg Emissions ◽  
Residential Building ◽  
Air Distribution ◽  
High Rise ◽  
Building Enclosure ◽  
Air Tightness ◽  
The Impact

A compartmentalization and in-suite ventilation system (ISVS) retrofit strategy was investigated for an existing high-rise residential building in Vancouver. Computer simulation using EnergyPlus™ was used to examine the impact of the proposed retrofit on heating energy and GHG emissions for the building’s original 1983 condition, and its current condition which incorporates a 2012 enclosure retrofit. Results show annual heating energy decreased by 51% and overall GHG emissions decreased by 29% for the proposed retrofit applied to the building in its current condition. When applied to the building in its original condition, heating energy decreased by 49% and overall GHG emissions decreased by 21%. The main benefit of the proposed retrofit, however, is improved effectiveness of the mechanical ventilation system. Because building enclosure air-tightness improvements can negatively impact air distribution in buildings with pressurized corridor ventilation systems, the proposed retrofit should be applied in combination with, or before, an enclosure retrofit.

scholarly journals Impact of a compartmentalization and ventilation system retrofit strategy on energy use in high-rise residential buildings

2021 ◽  
Author(s):  
Mathew Carlsson
Keyword(s):  
Energy Use ◽  
Residential Buildings ◽  
Ventilation System ◽  
Ghg Emissions ◽  
Residential Building ◽  
Air Distribution ◽  
High Rise ◽  
Building Enclosure ◽  
Air Tightness ◽  
The Impact

A compartmentalization and in-suite ventilation system (ISVS) retrofit strategy was investigated for an existing high-rise residential building in Vancouver. Computer simulation using EnergyPlus™ was used to examine the impact of the proposed retrofit on heating energy and GHG emissions for the building’s original 1983 condition, and its current condition which incorporates a 2012 enclosure retrofit. Results show annual heating energy decreased by 51% and overall GHG emissions decreased by 29% for the proposed retrofit applied to the building in its current condition. When applied to the building in its original condition, heating energy decreased by 49% and overall GHG emissions decreased by 21%. The main benefit of the proposed retrofit, however, is improved effectiveness of the mechanical ventilation system. Because building enclosure air-tightness improvements can negatively impact air distribution in buildings with pressurized corridor ventilation systems, the proposed retrofit should be applied in combination with, or before, an enclosure retrofit.

scholarly journals Humidity-Sensitive Demand-Controlled Ventilation Applied to Multi-Unit Residential Building – Performance and Energy Consumption in Dfb Continental Climate

2020 ◽  
Author(s):  
Jerzy Sowa ◽  
Maciej Mijakowski
Keyword(s):  
Energy Consumption ◽  
Energy Use ◽  
Energy Savings ◽  
Residential Buildings ◽  
Ventilation System ◽  
Residential Building ◽  
Primary Energy ◽  
Controlled Ventilation ◽  
Demand Controlled Ventilation ◽  
Continental Climate

A humidity-sensitive demand-controlled ventilation system is known for many years. It has been developed and commonly applied in regions with an oceanic climate. Some attempts were made to introduce this solution in Poland in a much severe continental climate. The article evaluates this system's performance and energy consumption applied in an 8-floor multi-unit residential building, virtual reference building described by the National Energy Conservation Agency NAPE, Poland. The simulations using the computer program CONTAM were performed for the whole hating season for Warsaw's climate. Besides passive stack ventilation that worked as a reference, two versions of humidity-sensitive demand-controlled ventilation were checked. The difference between them lies in applying the additional roof fans that convert the system to hybrid. The study confirmed that the application of demand-controlled ventilation in multi-unit residential buildings in a continental climate with warm summer (Dfb) leads to significant energy savings. However, the efforts to ensure acceptable indoor air quality require hybrid ventilation, which reduces the energy benefits. It is especially visible when primary energy use is analyzed.

scholarly journals The importance of understanding occupant behaviour in buildings: exploring the nexus of design, management, behaviour, and energy use in green, high-rise residential buildings

2021 ◽  
Author(s):  
Craig Brown
Keyword(s):  
Atmospheric Carbon Dioxide ◽  
Energy Use ◽  
Residential Buildings ◽  
Hot Water ◽  
Design Management ◽  
Level Energy ◽  
Occupant Behaviour ◽  
High Rise ◽  
Energy Use Intensity ◽  
Occupant Satisfaction

The quest to ‘green’ the built environment has been ongoing since the early 1970s and has intensified as the threat of exceeding 450 ppm of atmospheric carbon dioxide has become more real. As a result of this, many contemporary residential high-rise buildings are designed with hopes of achieving carbon emission reductions, while not sacrificing occupant satisfaction, or property value. Little is known about how the occupants of these buildings contribute to the energy and water consumed therein, nor the effects that these design aspirations have on occupant satisfaction. The present study relies on data collected in four recently built, Leadership in Energy and Environmental Design [LEED] certified, high-rise, residential buildings in Ontario, Canada. Using various sources of data (i.e., from energy and water submeters, questionnaire responses, interviews, and physical data relating to each suite) the extent to which physical, behavioural, and demographic variables explain suite-level energy and water consumption was explored. Energy use intensity differed by a factor of 7 between similar suites, electricity by a factor of 5, hot water by a factor of 13, cooling by a factor of 47, and heating by a factor of 67. Results show that physical building characteristics explain 43% of the heating variability, 16% of the cooling variability, and 40% of electricity variability, suggesting that the remainders could be a result of occupant behaviour and demographics. It was also discovered that 52% of respondents were not using their energy recovery ventilators [ERV] for the following reasons: acoustic dissatisfaction, difficulty with accessibility of filters, occupant knowledge and preferences, and a lack of engagement with training materials. Results suggest that abandoning mechanical ventilation in favour of passive ventilation could actually lead to greater satisfaction with indoor air quality and to decreased energy consumption. Using content analysis of questionnaire comments, the utility of contextual factors in understanding energy use and satisfaction in the study buildings, as well as their value in producing feedback for designers and managers, was explored. Combining quantitative and qualitative datasets was an effective approach to understanding energy use in this understudied building type.

scholarly journals The importance of understanding occupant behaviour in buildings: exploring the nexus of design, management, behaviour, and energy use in green, high-rise residential buildings

2021 ◽  
Author(s):  
Craig Brown
Keyword(s):  
Atmospheric Carbon Dioxide ◽  
Energy Use ◽  
Residential Buildings ◽  
Hot Water ◽  
Design Management ◽  
Level Energy ◽  
Occupant Behaviour ◽  
High Rise ◽  
Energy Use Intensity ◽  
Occupant Satisfaction

The quest to ‘green’ the built environment has been ongoing since the early 1970s and has intensified as the threat of exceeding 450 ppm of atmospheric carbon dioxide has become more real. As a result of this, many contemporary residential high-rise buildings are designed with hopes of achieving carbon emission reductions, while not sacrificing occupant satisfaction, or property value. Little is known about how the occupants of these buildings contribute to the energy and water consumed therein, nor the effects that these design aspirations have on occupant satisfaction. The present study relies on data collected in four recently built, Leadership in Energy and Environmental Design [LEED] certified, high-rise, residential buildings in Ontario, Canada. Using various sources of data (i.e., from energy and water submeters, questionnaire responses, interviews, and physical data relating to each suite) the extent to which physical, behavioural, and demographic variables explain suite-level energy and water consumption was explored. Energy use intensity differed by a factor of 7 between similar suites, electricity by a factor of 5, hot water by a factor of 13, cooling by a factor of 47, and heating by a factor of 67. Results show that physical building characteristics explain 43% of the heating variability, 16% of the cooling variability, and 40% of electricity variability, suggesting that the remainders could be a result of occupant behaviour and demographics. It was also discovered that 52% of respondents were not using their energy recovery ventilators [ERV] for the following reasons: acoustic dissatisfaction, difficulty with accessibility of filters, occupant knowledge and preferences, and a lack of engagement with training materials. Results suggest that abandoning mechanical ventilation in favour of passive ventilation could actually lead to greater satisfaction with indoor air quality and to decreased energy consumption. Using content analysis of questionnaire comments, the utility of contextual factors in understanding energy use and satisfaction in the study buildings, as well as their value in producing feedback for designers and managers, was explored. Combining quantitative and qualitative datasets was an effective approach to understanding energy use in this understudied building type.

scholarly journals Analysis of the systems of ventilation of residential houses of Ukraine and Estonia

2017 ◽  
Vol 12 (2) ◽  
pp. 23-30
Author(s):  
Olena Savchenko ◽  
Vasyl Zhelykh ◽  
Hendrik Voll
Keyword(s):  
Natural Ventilation ◽  
Residential Buildings ◽  
Ventilation System ◽  
National Standards ◽  
Normative Documents ◽  
High Rise ◽  
Exhaust Ventilation ◽  
European Standards ◽  
Ventilation Systems

Abstract The most common ventilation system in residential buildings in Ukraine is natural ventilation. In recent years, due to increased tightness of structures, an increase in the content of synthetic finishing materials in them, the quality of microclimate parameters deteriorated. One of the measures to improve the parameters of indoor air in residential buildings is the use of mechanical inflow and exhaust ventilation system. In this article the regulatory documents concerning the design of ventilation systems in Ukraine and Estonia and the requirements for air exchange in residential buildings are considered. It is established that the existing normative documents in Ukraine are analogous to European norms, which allow design the system of ventilation of residential buildings according to European standards. However, the basis for the design of ventilation systems in Ukraine is the national standards, in which mechanical ventilation, unfortunately, is provided only for the design of high-rise buildings. To maintain acceptable microclimate parameters in residential buildings, it is advisable for designers to apply the requirements for designing ventilation systems in accordance with European standards.

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