Blar i NTNU Open på forfatter "Cao, Guangyu"
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Air quality in an indoor swimming pool facility
Grande, Morten Sæther (Master thesis, 2019)Svømmebasseng benyttes i dag til både sport, rekreasjon, terapi og svømmeopplæring for brukere i alle aldre. I Norge er klimaet slik at utendørs svømmebasseng kun kan brukes noen få måneder i året. Derfor er det bygd flere ... -
Airflow distribution for minimizing human exposure to airborne contaminants in healthcare facilities
Aganovic, Amar (Doctoral theses at NTNU;2019:41, Doctoral thesis, 2019)Hospital-acquired infections (HAIs) have been a persistent problem in hospitals for over a century and are associated with significant mortality, morbidities and increasing healthcare cost. There is strong evidence that ... -
BIM Integrated LCA for Promoting Circular Economy towards Sustainable Construction: An Analytical Review
Xue, Kai; Hossain, Uzzal; Liu, Meng; Ma, Mingjun; Zhang, Yizhi; Hu, Mengqiang; Chen, Xiaoyi; Cao, Guangyu (Peer reviewed; Journal article, 2021)Sustainable construction is widely regarded as one of the best decisions to reduce the environmental impact of the buildings. Numerous scientific efforts have been devoted to promoting sustainability by adopting different ... -
Can CO2 sensors in the ventilation system of a pool facility help reduce the variability in the trihalomethane concentration observed in indoor air?
Nitter, Therese Bergh; Grande, Morten S.; Svendsen, Kristin V Hirsch; Jørgensen, Rikke Bramming; Carlucci, Salvatore; Cao, Guangyu (Peer reviewed; Journal article, 2020)Volatile and hazardous compounds are formed during the chlorination of pool water. Monitoring components in the air, such as the four trihalomethanes; chloroform, dichlorobromomethane, dibromochloromethane and bromoform ... -
Can we meet the requirement for ultra-clean operation room (10CFU/m3) with dilution ventilation?
Pedersen, Christoffer; Cao, Guangyu; Drangsholt, Finn; Stenstad, Liv-Inger; Skogås, Jan Gunnar (Journal article; Peer reviewed, 2019)The objective of this study is to analyse what conditions may, and may not take place during surgery in a dilution ventilated operating room (OR), to fulfil an ultra-clean requirement (10 CFU/m3). To achieve the objective, ... -
Characterization of a combined downward jet for protected zone ventilation reducing exposure risk of occupants to indoor pollutants
Fuglseth, Jonas Stokkeland (Master thesis, 2017)The objective of the dissertation is to characterize the air distribution of a combined downward jet and to obtain a model of the velocity distribution. The objective is achieved through analyzing the initial outlet ... -
Characterization of a combined downward jet for protected zone ventilation reducing exposure risk of occupants to indoor pollutants
Fuglseth, Jonas Stokkeland (Master thesis, 2017)The objective of the dissertation is to characterize the air distribution of a combined downward jet and to obtain a model of the velocity distribution. The objective is achieved through analyzing the initial outlet ... -
Characterization of the airflow distribution in close proximity to a patient in operating rooms with laminar airflow at St. Olavs Hospital
Storås, Madeleine Charlotte Aviles (Master thesis, 2017)This master's thesis has investigated the airflow distribution in close proximity to a patient in a laminar airflow ventilated operating theatre. The assignment was divided into three different scenarios, that each consider ... -
Characterization of the airflow distribution in close proximity to the patient in an operating room
Nilssen, Anders Mostrøm (Master thesis, 2018)In modern hospitals, among surgical patients surgical-site infections (SSIs) are the most common hospital-aquired infections accounting for 36% of nosocomial infections. Tremendous efforts have been made to understand the ... -
Distribution of droplet aerosols generated by mouth coughing and nosebreathing in an air-conditioned room
Zhang, Yixian; Feng, Guohui; Bi, Yang; Cai, Yilin; Zhang, Zheng; Cao, Guangyu (Peer reviewed; Journal article, 2019)The objective of this study is to understand the distribution of droplet aerosols in an air-conditioned room, which is very important to comprehend how infectious bacteria and viruses transmit from person to person through ... -
Effective ventilation solutions preventing sickbuilding syndrome in Norwegian schools
Svinvik, Sigbjørn (Master thesis, 2019)Skolebarn bruker en betydelig del av sin tid (20\%) i skolebygget. Dårlig inneklima i skolebygningene kan påvirke barns utvikling, helse og akademiske prestasjoner. Det er mange gamle skolebygninger i Norge i dag som er ... -
Eksperimentell studie på en ny luftstrømfordelingsmetode for menneskelig nærmiljø i operasjonsstue
Flatsetø, Catharina (Master thesis, 2019)Denne masteroppgaven undersøker effekten av luftstrømfordelingsmetode på det menneskelige nærmiljøet i operasjonssalene. Det overordnede målet for den nye metoden er å redusere antall pasienter som får infeksjon etter ... -
Energy cost models for air supported sports hall in cold climates considering energy efficiency
Nord, Natasa; Mathisen, Hans Martin; Cao, Guangyu (Journal article; Peer reviewed, 2015)The aim of the study was to develop models for energy planning for an air supported sports hall by analyzing different energy efficiency possibilities. This is a very specific building type suitable for sport activities ... -
Evaluation of different mixing airflow distribution methods for operating rooms
Pedersen, Christoffer (Master thesis, 2019)Bakgrunn: Nyere studier har vist at det er mulig å oppfylle det ultra-rene kravet(10CFU/m3) for operasjonsrom(OR) utstyrt med blandingsventilasjon(MV). Variasjoner i målt CFU-nivå eksisterer imidlertid mellom operasjoner, ... -
Experimental measurements of surgical microenvironments in two operating rooms with laminar airflow and mixing ventilation systems
Cao, Guangyu; Kvammen, Ingeborg; Hatten, Thea Amalie Solberg; Zhang, Yixian; Stenstad, Liv-Inger; Kiss, Gabriel; Skogås, Jan Gunnar (Peer reviewed; Journal article, 2020)At present, laminar airflow (LAF) systems and mixing ventilation (MV) systems are two commonly used ventilation solutions for operating rooms (ORs) to ensure the required indoor air quality. However, recent studies have ... -
Experimental study of the airflow distribution in a room with heating equipment
Polak, Joanna (Master thesis, 2015)Energy consumption in building sector has led to a great need for energy saving and energy efficient solutions for buildings. Next generation of buildings should apply high energy performance solutions in order to decrease ... -
Experimental study of the interaction between thermal plumes and human breathing in an undisturbed indoor environment
Cheng, Zhu; Cao, Guangyu; Aganovic, Amar; Li, Baizhan (Peer reviewed; Journal article, 2020)This study characterized the interaction between human thermal plume and breathing air flow while people are sitting in a quiescent indoor environment. A sitting breathing thermal manikin was developed to mimic a real ... -
Experimental study of the performance of protected zone ventilation used for a reception space
Szopa, Aleksandra Barbara (Master thesis, 2015)The objective of this study was to examine the possibilities for the downward plane jet to separate two zones with different pollution concentration. This project work is based on technique called protected zone ventilation ... -
Field investigation of thermal comfort level of patients and surgical staff in operating rooms at St Olavs hospital
Helena Kuivjõgi (Master thesis, 2019)I helsetjenester og sykehusmiljøer er det viktig å kunne forutsi termisk komfort som en parameter for inneluftkvalitet. Ustabile termiske forhold er kritiske i operasjonsrommet og kan redusere arbeidseffektiviteten og øke ... -
Field investigations of the indoor air quality regarding the potential health effects in energy efficient buildings during the heating season
Solberg, Karoline Veum (Master thesis, 2016)In the search for energy reduction in the building sector, the focus on energy efficient buildings is increasing. In addition, people spend up to 90% of their time indoors. Norwegian office buildings experience low levels ...