Blar i NTNU Open på forfatter "Mathisen, Hans Martin"
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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 On-site Wind Pressure Coefficients Compared to Standard Coefficients - A case study of the natural ventilation potential in the ZEB Laboratory
Skarbøvik, Ingebjørg Eggen (Master thesis, 2023)Byggesektoren er i dag den største energiforbrukende sektoren i tillegg til å være en stor bidragsyter til CO2-utslipp. En betydelig mengde av denne energien brukes til oppvarming, kjøling og varmtvann til husholdningsbruk. ... -
Evaluering av energieffektivt kjølelager og kontorbygning med elektrisk og termisk lagring
Rennan, Ingrid Marie (Master thesis, 2020)Abstract will be available on 2023-09-10 -
Evaluering av ventilasjonsløsninger for termisk komfort og inneluftkvalitet i en klatrehall
Merkesdal Hall, Katrine (Master thesis, 2019)I omleggingen til lavutslippssamfunnet er energieffektivisering av bygningsmassen, som i dag står for rundt 40 % av Norges samlede energibruk, av stor betydning. Et økende fokus på minimering av energibruk til bygningers ... -
Experimental Investigation of the Total Performance of a Membrane Energy Exchanger
Skaten, Mariell (Master thesis, 2021)Energy-efficient ventilation is crucial to reach today's strict Norwegian building regulations. Heat exchangers are therefore mandatory to install in ventilation systems to reduce the energy demand for ventilation. There ... -
Experimental study on the effect of exhaust airflows on the surgical environment in an operating room with mixing ventilation
Xue, Kai; Cao, Guangyu; Liu, Meng; Zhang, Yixian; Pedersen, Christoffer; Mathisen, Hans Martin; Stenstad, Liv Inger; Skogås, Jan Gunnar (Peer reviewed; Journal article, 2020)Due to the requirements of indoor environment parameters, including temperature, humidity, air speed and indoor quality, the design of the surgical environment is a very complex task. However, with limited studies on the ... -
Experimental study on the exposure level of surgical staff to SARS-CoV-2 in operating rooms with mixing ventilation under negative pressure
Bi, Yang; Aganovic, Amar; Mathisen, Hans Martin; Cao, Guangyu (Peer reviewed; Journal article, 2022)The purpose of this study was to reveal the exposure level of surgical staff to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) from the patient's nose and wound during operations on COVID-19 patients. The ... -
Experimental Study on the Surgical Microenvironment in an Operating Room with Mixing Ventilation under Positive and Negative Pressure
Bi, Yang; Heggebø, Frida Josefine; Harsem, Trond Thorgeir; Mathisen, Hans Martin; Aganovic, Amar; Cao, Guangyu (Chapter, 2021)Due to the outbreak of Covid-19, negative pressure operating room (NPOR) are strongly recommended to be applied to prevent spreading virus from infected patients to adjacent rooms during surgery procedures. However, there ... -
Experimental study on the thermal plume from a surgeon in an operating room with mixing ventilation during COVID-19 pandemic
Heggebø, Frida Josefine; Bi, Yang; Harsem, Trond Thorgeir; Mathisen, Hans Martin; Cao, Guangyu (Chapter, 2021)Following the outbreak of COVID-19 (SARS-CoV-2) in 2019, studies show positive results in protecting the surgical staff from patients infected by COVID-19 in operating rooms (ORs) with negative pressure. A negative pressure ... -
Frost formation in membrane based flat plate heat exchangers
Wiik, Idar (Master thesis, 2014)The objective of the Research Centre ZEB is to eliminate greenhouse gas emissions from buildings. Reducing the energy consumption in buildings is a means to that end. The use of membrane based plate heat exchangers can ... -
Frost formation in membrane based flat plate heat exchangers
Wiik, Idar (Master thesis, 2014)The objective of the Research Centre ZEB is to eliminate greenhouse gas emissions from buildings. Reducing the energy consumption in buildings is a means to that end. The use of membrane based plate heat exchangers can ... -
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 in combination with different heat pump solutions
Svenøy, Martin Sandvik (Master thesis, 2016)Abstract The aim for this Master s thesis has been to investigate and compare the performance of different methods for heat recovery from exhaust ventilation air. Energy efficiency of using a heat exchanger is compared to ... -
Heat Recovery in Combination with Different Heat Pump Solutions for Energy Supply
Solberg, Atle (Master thesis, 2015)The main purpose of this Master's thesis has been to investigate the performance of different methods of heat recovery from ventilation air. Comparisons have been made with regard to delivered energy for heating of domestic ... -
Heat recovery ventilation design limitations due to LHC for different ventilation strategies in ZEB
Liu, Peng; Justo Alonso, Maria; Mathisen, Hans Martin (Journal article; Peer reviewed, 2022) -
High efficiency heat recovery from ventilation air - Effektiv varmegjenvinning fra ventilasjonsluft
Nørgård-Hansen, Ranja Therese (Master thesis, 2017)The objective of this thesis has been to conduct both theoretical and practical work to investigate how to the calculations of effectiveness can be more representative. A literature study regarding field test of heat ... -
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 ... -
Hybrid ventilasjon i moderne bygninger
Lie, Magnus (Master thesis, 2015)I bygningsindustrien blir det satt stadig strengere krav vedrørende energibruk og energieffektivitet. Samtidig er et godt inneklima viktig. Hybride mixed-mode løsninger er de siste årene lansert som et alternativ til ... -
Idébank for bedre inneklima. FDV i skoler – viktig for helse og læringsmiljø
Mathisen, Hans Martin; Gustavsen, Kai; Gorantonaki, Jenny Evgenia (Research report, 2023) -
The impact of air change rate on the air quality of surgical microenvironment in an operating room with mixing ventilation
Zhang, Yixian; Cao, Guangyu; Feng, Guohui; Xue, Kai; Pedersen, Christoffer; Mathisen, Hans Martin; Stenstad, Liv-Inger; Skogås, Jan Gunnar (Peer reviewed; Journal article, 2020)Transmission of airborne microbe-carrying particles (MCPs) is one of the key factors causing surgical site infection during surgical procedures. In operating rooms (ORs) with mixing ventilation, air change rate may determine ...