Browsing SINTEF Open by Author "Justo Alonso, Maria"
Now showing items 1-13 of 13
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Assessing the indoor air quality and their predictor variable in 21 home offices during the Covid-19 pandemic in Norway
Justo Alonso, Maria; Moazami, Therese Nitter; Liu, Peng; Jørgensen, Rikke Bramming; Mathisen, Hans Martin (Peer reviewed; Journal article, 2022)In this study, concentrations of pollutants: formaldehyde, carbon dioxide (CO2), and total volatile organic compounds (TVOC) and parameters: indoor room temperature and relative humidity (RH) were measured in 21 home offices ... -
Development and optimization of highly efficient heat recoveries for low carbon residential buildings
Liu, Peng; Justo Alonso, Maria; Mathisen, Hans Martin; Halfvardsson, Anneli (Peer reviewed; Journal article, 2022)To achieve energy efficiency and lower carbon emissions, building envelopes have become tighter and more insulated. These buildings must have mechanical ventilation with high efficient heat recovery to provide adequate ... -
Evaluation of low-cost formaldehyde sensors calibration
Justo Alonso, Maria; Madsen, Henrik; Liu, Peng; Jørgensen, Rikke Bramming; Jørgensen, Thomas Berg; Christiansen, Even Johan; Myrvang, Olav Aleksander; Bastien, Diane; Mathisen, Hans Martin (Peer reviewed; Journal article, 2022)Low-cost sensors (LCS) are becoming ubiquitous in the market; however, calibration is needed before reliable use. An evaluation of the calibration of eight identical pre-calibrated formaldehyde LCS is presented here. The ... -
Global sensitivity analysis and optimal design of heat recovery ventilation for zero emission buildings
Liu, Peng; Justo Alonso, Maria; Mathisen, Hans Martin (Peer reviewed; Journal article, 2023)Energy-efficient building services are necessary to realise zero-emission buildings while maintaining adequate indoor environmental quality. As the share of ventilation heating needs grow in well-insulated and airtight ... -
Heat recovery ventilation design limitations due to LHC for different ventilation strategies in ZEB
Liu, Peng; Justo Alonso, Maria; Mathisen, Hans Martin (Peer reviewed; Journal article, 2022)Today's buildings are becoming more insulated and airtight to reduce transmission heat losses. Energy use for ventilation can represent up to half of these buildings' total energy use. Heat recovery in ventilation and ... -
Holistic methodology to reduce energy use and improve indoor air quality for demand-controlled ventilation
Justo Alonso, Maria; Liu, Peng; Marman, Stine Flage; Jørgensen, Rikke Bramming; Mathisen, Hans Martin (Peer reviewed; Journal article, 2022)Ventilation control logics are usually based on the control indicators of occupancy. However, strategies including control of contaminants not linked to occupancy are requested and more feasible with the introduction in ... -
Measurements of indoor air quality in four Norwegian schools
Justo Alonso, Maria; Jørgensen, Rikke Bramming; Mathisen, Hans Martin (SINTEF Proceedings;9, Chapter; Peer reviewed; Conference object, 2021)Children spend a minimum of six hours per day in Norwegian schools. Their exposure to different indoor air quality it is known to affect their performance. It is very common to use demand-controlled ventilation ... -
A multi-objective optimisation framework to design membrane-based energy recovery ventilation for low carbon buildings
Liu, Peng; Mathisen, Hans Martin; Justo Alonso, Maria; Halfvardsson, Anneli (Peer reviewed; Journal article, 2023)Membrane energy exchangers (MEEs) are increasingly being studied and utilized to contribute to realising energy-efficient building services and providing satisfactory indoor environments. The performance of MEEs has been ... -
Performance evaluation and control scenarios for targeted heat injection and extraction in an existing geothermal borehole field in Norway
Clauß, John; Taveres-Cachat, Ellika Rose Renee; Justo Alonso, Maria (Peer reviewed; Journal article, 2023)This work presents the calibration, validation, and analysis of a borehole thermal energy storage (BTES) in building performance simulation using operational data from an existing borehole field in Kalnes, Norway. The data ... -
A review of heat recovery technologies and their frost control for residential building ventilation in cold climate regions
Bai, Hongyu; Liu, Peng; Justo Alonso, Maria; Mathisen, Hans Martin (Peer reviewed; Journal article, 2022)This study reviewed heat recovery technologies and their application in residential buildings in cold climates. The increasing efforts on reducing building energy use over the recent years have resulted in improved insulated ... -
Understanding the role of moisture recovery in indoor humidity: An analytical study for a Norwegian single-family house during heating season
Liu, Peng; Justo Alonso, Maria; Mathisen, Hans Martin; Halfvardsson, Anneli; Simonson, Carey J. (Peer reviewed; Journal article, 2022)Providing a high-quality indoor environment with appropriate indoor humidity levels for residential buildings is essential for good physical and mental health, occupant comfort, and long-term building performance. The role ... -
The use of machine learning to determine moisture recovery in a heat wheel and its impact on indoor moisture
Liu, Peng; Justo Alonso, Maria; Mathisen, Hans Martin; Halfvardsson, Anneli (Peer reviewed; Journal article, 2022)Balanced mechanical ventilation equipped with heat recovery has been widely adopted in cold climates to ensure an acceptable indoor environment in energy-efficient buildings. An acknowledged trend to achieve more energy ... -
Use of Membrane Energy Exchanger in Ventilation: Odour Sensory Measurement
Liu, Peng; Mathisen, Hans Martin; Skaten, Mariell; Justo Alonso, Maria (Peer reviewed; Journal article, 2022)Membrane energy exchanger (MEE) for a new generation of energy efficient heating, ventilation and air conditioning (HVAC) systems has attracted wide attention. As MEE has been increasingly employed, extensive studies of ...