Blar i SINTEF Open på forfatter "Liu, Peng"
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Airflow Measurements for Air Handling Units
Rønneseth, Øystein; Liu, Peng; Alonso, Maria Justo (SINTEF Fag;51, Research report, 2018)Executive summary This technical report is intended as a preliminary study on airflow measurements as they are basic for the evaluation of the efficiency of air handling units (AHUs) in ventilation systems. The report ... -
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 frost prevention strategies for membrane energy exchangers
Bai, Hongyu; Liu, Peng; Mathisen, Hans Martin (Peer reviewed; Journal article, 2023)In cold climates, the application of heat recovery is restricted by the issue of frost, which causes potential damage to heat exchangers and degrades their effectiveness. Membrane energy exchangers (MEEs), which enable ... -
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 ... -
Evaluation of Simplified Space-Heating Hydronic Distribution for Norwegian Passive Houses
Georges, Laurent; Alonso, Maria Justo; Woods, Ruth; Wen, Kang; Håheim, Fredrik; Liu, Peng; Berge, Magnar; Thalfeldt, Martin (ZEB Project report;39, Research report, 2017)This technical report combines research results from the Norwegian Research Center on Zero Emission Buildings (ZEB) and a competence project about simplified hydronic distribution funded by Husbanken. In the Norwegian ... -
Fuktgjenvinning i roterende varmegjenvinnere, venn eller fiende av inneklimaet?
Liu, Peng; Mathisen, Hans Martin (Journal article, 2022)For lite eller for mye fuktinnhold i lufta kan være en utfordring for inneklimaet. Vi har brukt maskinlæringsalgoritmer for å simulere fuktgjenvinning i roterende varmegjenvinnere. Resultatene viser at denne gjenvinningen ... -
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 ... -
Innovasjonsrapport 2020. Forskningssenteret for nullutslippsområder i smarte byer (FME ZEN)
Bergsdal, Håvard; Sørensen, Åse Lekang; Cervenka, Zdena; Holm, Øystein; Thomsen, Judith; Sartori, Igor; Lindberg, Karen Byskov; Stokke, Raymond Andreas; De Boer, Luitzen; Hamdan, Hasan; Holmen, Elsebeth; Wiik, Marianne Rose Kjendseth; Backe, Stian; Kauko, Hanne; Georges, Laurent; Walnum, Harald Taxt; Lien, Synne Krekling; Skaar, Christofer; Wolfgang, Ove; Brattebø, Helge; Lausselet, Carine; Resch, Eirik; Sandberg, Nina Holck; Pinel, Dimitri; Thorvaldsen, Kasper Emil; Alonso, Maria Justo; Askeland, Magnus; Petersen, Sobah Abbas; Favero, Matteo; Carlucci, Salvatore; Liu, Peng (ZEN Report;28, Research report, 2020)Forord. Forskning og innovasjon er grunnpilaren i vår visjon om å utvikle bærekraftige områder med null klimagassutslipp. Innovasjonskomiteen skal bistå senterledelsen i dette arbeidet gjennom å etablere gode innovasjonsprosesser ... -
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 ... -
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 ... -
Techniques for airflow measurements to determine the real efficiency of heat recovery in ventilation systems
Rønneseth, Øystein; Liu, Peng; Alonso, Maria Justo; Mathisen, Hans Martin (Conference object; Journal article; Peer reviewed, 2019)Heat recovery in ventilation is essential to reduce energy use and thus mitigate greenhouse gas emissions from the building sector. Heat recovery efficiency of at least 80% in new buildings is required according to Norwegian ... -
Theoretical Prediction of Longitudinal Heat Conduction Effects on the Efficiency of the Heat Wheel Used for Ventilation in Powerhouse Building “Kjørbo” in Norway
Liu, Peng; Mathisen, Hans Martin; Alonso, Maria Justo (Journal article; Peer reviewed, 2017)The present study investigates effects of longitudinal heat conduction (LHC) on the heat recovery effectiveness of the heat wheel in the Powerhouse building “Kjørbo”. The effects LHC which are usually ignored in the heat ... -
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 ... -
Uniformity of Supply Air in the Plenum for Under-Floor Air Distribution Ventilation in a Circular Conference Room: A CFD Study
Fan, Xiaolei; Yu, Tao; Liu, Peng; Li, Xiangdong (Peer reviewed; Journal article, 2022)Underfloor air distribution (UFAD) systems are increasingly used for their advantages in improving energy savings, indoor air quality, and thermal comfort. In UFAD systems, an underfloor plenum delivers conditioned air to ... -
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 ...