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apps Other research productkeyboard_double_arrow_right Other ORP type 2018 Denmark DanishPublisher:Byg-Erfa Authors: Rasmussen, Torben Valdbjørn; Gudum, Charlotte;Rasmussen, Torben Valdbjørn; Gudum, Charlotte;VBN; Aalborg Univers... arrow_drop_down VBN; Aalborg University Research PortalOther ORP type . 2018All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=dris___00956::b62186394b3e528b04f70c12fe757ac7&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert VBN; Aalborg Univers... arrow_drop_down VBN; Aalborg University Research PortalOther ORP type . 2018All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=dris___00956::b62186394b3e528b04f70c12fe757ac7&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research productkeyboard_double_arrow_right Other ORP type 2011 Denmark EnglishPublisher:Department of Civil Engineering, Aalborg University Authors: Rong, Li;Rong, Li;Pig productions cause a wide emission of odors, such as ammonia (NH3), hydrogen sulfide (H2S), and methane (CH4). Ammonia is one of the most important emissions for evaluating the air quality either in animal buildings or atmospheric environment. In studies of ammonia emission from animal buildings reported in literature, little effort has been made to investigate the accuracy of current Henry’s law constant for modeling ammonia mass transfer process and study ammonia emissions in a full scale pig pen from fluid dynamics by CFD simulations. This will be the main objectives of this study.The ammonia emission rate was measured in a wind tunnel under different airflow and ammonium solution temperatures. This investigation provides a general understanding for the influence of velocity, turbulence intensity and temperature on the ammonia emissions. The relationship between ammonia emissions and boundary layer thickness of velocity are shown linearly under different ammonium solution temperatures.Using the experiment data measured in the wind tunnel including velocity, concentration and temperature profiles and emission rate, this study adopts computational fluid dynamics (CFD) to investigate the accuracy of Henry’s law constants to determine the ammonia concentration in the air through the air-liquid interface. None of the present Henry’s law constant models provide a respectable agreement between simulated and measured results. A simplified model to determine the ammonia concentration in the air through the air-liquid interface is suggested from vapor-liquid equilibrium properties of ammonia water. Furthermore, the effects of airflow and temperature on ammonia mass transfer coefficient are also analyzed under different concentration boundary conditions determined by various Henry’s law constant models and vapor-liquid equilibrium properties.The simplified model to determine the ammonia boundary condition on the emission surface has been further used to study the ammonia emissions in a full scale pig pen under different ventilation systems and slatted floor opening ratios as well as various solution temperatures. The results show that the diffusive ceiling ventilation system can provide a relative low velocity in the pig pen and decrease ammonia emissions from the pig pen, but this ventilation system causes high ammonia concentration distribution in the animal occupied zone. Further, our study shows the effects of slatted floor opening ratios and solution temperature on ammonia emissions and analyzes the influence of those factors on the ammonia mass transfer coefficient. Pig productions cause a wide emission of odors, such as ammonia (NH3), hydrogen sulfide (H2S), and methane (CH4). Ammonia is one of the most important emissions for evaluating the air quality either in animal buildings or atmospheric environment. In studies of ammonia emission from animal buildings reported in literature, little effort has been made to investigate the accuracy of current Henry’s law constant for modeling ammonia mass transfer process and study ammonia emissions in a full scale pig pen from fluid dynamics by CFD simulations. This will be the main objectives of this study.The ammonia emission rate was measured in a wind tunnel under different airflow and ammonium solution temperatures. This investigation provides a general understanding for the influence of velocity, turbulence intensity and temperature on the ammonia emissions. The relationship between ammonia emissions and boundary layer thickness of velocity are shown linearly under different ammonium solution temperatures.Using the experiment data measured in the wind tunnel including velocity, concentration and temperature profiles and emission rate, this study adopts computational fluid dynamics (CFD) to investigate the accuracy of Henry’s law constants to determine the ammonia concentration in the air through the air-liquid interface. None of the present Henry’s law constant models provide a respectable agreement between simulated and measured results. A simplified model to determine the ammonia concentration in the air through the air-liquid interface is suggested from vapor-liquid equilibrium properties of ammonia water. Furthermore, the effects of airflow and temperature on ammonia mass transfer coefficient are also analyzed under different concentration boundary conditions determined by various Henry’s law constant models and vapor-liquid equilibrium properties.The simplified model to determine the ammonia boundary condition on the emission surface has been further used to study the ammonia emissions in a full scale pig pen under different ventilation systems and slatted floor opening ratios as well as various solution temperatures. The results show that the diffusive ceiling ventilation system can provide a relative low velocity in the pig pen and decrease ammonia emissions from the pig pen, but this ventilation system causes high ammonia concentration distribution in the animal occupied zone. Further, our study shows the effects of slatted floor opening ratios and solution temperature on ammonia emissions and analyzes the influence of those factors on the ammonia mass transfer coefficient.
All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______1266::d29b5f81e2abd53225e14fa307c1aca3&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______1266::d29b5f81e2abd53225e14fa307c1aca3&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research productkeyboard_double_arrow_right Other ORP type 2002 Denmark DanishAuthors: Munch-Andersen, Jørgen; Brandt, Erik;Munch-Andersen, Jørgen; Brandt, Erik;VBN; Aalborg Univers... arrow_drop_down VBN; Aalborg University Research PortalOther ORP type . 2002All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=dris___00956::96c7e9ab216cb07f0d9266963aec4f38&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert VBN; Aalborg Univers... arrow_drop_down VBN; Aalborg University Research PortalOther ORP type . 2002All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=dris___00956::96c7e9ab216cb07f0d9266963aec4f38&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research productkeyboard_double_arrow_right Other ORP type 2021 Denmark EnglishAuthors: Nielsen, Stine Maria Louring;Nielsen, Stine Maria Louring;This PhD study is motivated by the increasing implementation of chromatic lighting in healthcare environments. Adding to current research on visual and psychophysiological effects of light, this study investigates how the body feels in different colours of illumination. As a means to this, social scientific research is carried out in three case-studies in a showroom-, field- and lab environment from a body-sensory approach, comprehending light as a generator of atmosphere and the human body as multisensory and felt. Analyses of ethnographic data collected in each case-study indicate how participants not only felt differently but also moved in different manners in attunement to the surrounding hue of illumination. Moreover, a linking of findings across case-studies indicates how different colours of illumination generally attuned particular modes of bodily presences in space – from predominant modes of being-there physically in cool white and bluish hues, and predominant modes of being-near in warm amber and reddish hues. As such, the PhD study points to a general atmospheric potential of coloured illuminations to attune the multisensory and felt body in architectural spaces.
All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______1266::c1f143f39f0516cd29789910c0722246&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______1266::c1f143f39f0516cd29789910c0722246&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research productkeyboard_double_arrow_right Other ORP type 2021 Denmark DanishPublisher:Frederiksbergnyt.dk Authors: Vogelius, Peter;Vogelius, Peter;Aalborg University R... arrow_drop_down Aalborg University Research PortalOther ORP type . 2021Data sources: Aalborg University Research PortalVBN; Aalborg University Research PortalOther ORP type . 2021All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=dris___00956::cf55a5a3fa08664bccd3670f983f6767&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert Aalborg University R... arrow_drop_down Aalborg University Research PortalOther ORP type . 2021Data sources: Aalborg University Research PortalVBN; Aalborg University Research PortalOther ORP type . 2021All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=dris___00956::cf55a5a3fa08664bccd3670f983f6767&type=result"></script>'); --> </script>
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apps Other research productkeyboard_double_arrow_right Other ORP type 2018 Denmark DanishPublisher:Byg-Erfa Authors: Rasmussen, Torben Valdbjørn; Gudum, Charlotte;Rasmussen, Torben Valdbjørn; Gudum, Charlotte;VBN; Aalborg Univers... arrow_drop_down VBN; Aalborg University Research PortalOther ORP type . 2018All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=dris___00956::b62186394b3e528b04f70c12fe757ac7&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert VBN; Aalborg Univers... arrow_drop_down VBN; Aalborg University Research PortalOther ORP type . 2018All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=dris___00956::b62186394b3e528b04f70c12fe757ac7&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research productkeyboard_double_arrow_right Other ORP type 2011 Denmark EnglishPublisher:Department of Civil Engineering, Aalborg University Authors: Rong, Li;Rong, Li;Pig productions cause a wide emission of odors, such as ammonia (NH3), hydrogen sulfide (H2S), and methane (CH4). Ammonia is one of the most important emissions for evaluating the air quality either in animal buildings or atmospheric environment. In studies of ammonia emission from animal buildings reported in literature, little effort has been made to investigate the accuracy of current Henry’s law constant for modeling ammonia mass transfer process and study ammonia emissions in a full scale pig pen from fluid dynamics by CFD simulations. This will be the main objectives of this study.The ammonia emission rate was measured in a wind tunnel under different airflow and ammonium solution temperatures. This investigation provides a general understanding for the influence of velocity, turbulence intensity and temperature on the ammonia emissions. The relationship between ammonia emissions and boundary layer thickness of velocity are shown linearly under different ammonium solution temperatures.Using the experiment data measured in the wind tunnel including velocity, concentration and temperature profiles and emission rate, this study adopts computational fluid dynamics (CFD) to investigate the accuracy of Henry’s law constants to determine the ammonia concentration in the air through the air-liquid interface. None of the present Henry’s law constant models provide a respectable agreement between simulated and measured results. A simplified model to determine the ammonia concentration in the air through the air-liquid interface is suggested from vapor-liquid equilibrium properties of ammonia water. Furthermore, the effects of airflow and temperature on ammonia mass transfer coefficient are also analyzed under different concentration boundary conditions determined by various Henry’s law constant models and vapor-liquid equilibrium properties.The simplified model to determine the ammonia boundary condition on the emission surface has been further used to study the ammonia emissions in a full scale pig pen under different ventilation systems and slatted floor opening ratios as well as various solution temperatures. The results show that the diffusive ceiling ventilation system can provide a relative low velocity in the pig pen and decrease ammonia emissions from the pig pen, but this ventilation system causes high ammonia concentration distribution in the animal occupied zone. Further, our study shows the effects of slatted floor opening ratios and solution temperature on ammonia emissions and analyzes the influence of those factors on the ammonia mass transfer coefficient. Pig productions cause a wide emission of odors, such as ammonia (NH3), hydrogen sulfide (H2S), and methane (CH4). Ammonia is one of the most important emissions for evaluating the air quality either in animal buildings or atmospheric environment. In studies of ammonia emission from animal buildings reported in literature, little effort has been made to investigate the accuracy of current Henry’s law constant for modeling ammonia mass transfer process and study ammonia emissions in a full scale pig pen from fluid dynamics by CFD simulations. This will be the main objectives of this study.The ammonia emission rate was measured in a wind tunnel under different airflow and ammonium solution temperatures. This investigation provides a general understanding for the influence of velocity, turbulence intensity and temperature on the ammonia emissions. The relationship between ammonia emissions and boundary layer thickness of velocity are shown linearly under different ammonium solution temperatures.Using the experiment data measured in the wind tunnel including velocity, concentration and temperature profiles and emission rate, this study adopts computational fluid dynamics (CFD) to investigate the accuracy of Henry’s law constants to determine the ammonia concentration in the air through the air-liquid interface. None of the present Henry’s law constant models provide a respectable agreement between simulated and measured results. A simplified model to determine the ammonia concentration in the air through the air-liquid interface is suggested from vapor-liquid equilibrium properties of ammonia water. Furthermore, the effects of airflow and temperature on ammonia mass transfer coefficient are also analyzed under different concentration boundary conditions determined by various Henry’s law constant models and vapor-liquid equilibrium properties.The simplified model to determine the ammonia boundary condition on the emission surface has been further used to study the ammonia emissions in a full scale pig pen under different ventilation systems and slatted floor opening ratios as well as various solution temperatures. The results show that the diffusive ceiling ventilation system can provide a relative low velocity in the pig pen and decrease ammonia emissions from the pig pen, but this ventilation system causes high ammonia concentration distribution in the animal occupied zone. Further, our study shows the effects of slatted floor opening ratios and solution temperature on ammonia emissions and analyzes the influence of those factors on the ammonia mass transfer coefficient.
All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______1266::d29b5f81e2abd53225e14fa307c1aca3&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______1266::d29b5f81e2abd53225e14fa307c1aca3&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research productkeyboard_double_arrow_right Other ORP type 2002 Denmark DanishAuthors: Munch-Andersen, Jørgen; Brandt, Erik;Munch-Andersen, Jørgen; Brandt, Erik;VBN; Aalborg Univers... arrow_drop_down VBN; Aalborg University Research PortalOther ORP type . 2002All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=dris___00956::96c7e9ab216cb07f0d9266963aec4f38&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert VBN; Aalborg Univers... arrow_drop_down VBN; Aalborg University Research PortalOther ORP type . 2002All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=dris___00956::96c7e9ab216cb07f0d9266963aec4f38&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research productkeyboard_double_arrow_right Other ORP type 2021 Denmark EnglishAuthors: Nielsen, Stine Maria Louring;Nielsen, Stine Maria Louring;This PhD study is motivated by the increasing implementation of chromatic lighting in healthcare environments. Adding to current research on visual and psychophysiological effects of light, this study investigates how the body feels in different colours of illumination. As a means to this, social scientific research is carried out in three case-studies in a showroom-, field- and lab environment from a body-sensory approach, comprehending light as a generator of atmosphere and the human body as multisensory and felt. Analyses of ethnographic data collected in each case-study indicate how participants not only felt differently but also moved in different manners in attunement to the surrounding hue of illumination. Moreover, a linking of findings across case-studies indicates how different colours of illumination generally attuned particular modes of bodily presences in space – from predominant modes of being-there physically in cool white and bluish hues, and predominant modes of being-near in warm amber and reddish hues. As such, the PhD study points to a general atmospheric potential of coloured illuminations to attune the multisensory and felt body in architectural spaces.
All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______1266::c1f143f39f0516cd29789910c0722246&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______1266::c1f143f39f0516cd29789910c0722246&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research productkeyboard_double_arrow_right Other ORP type 2021 Denmark DanishPublisher:Frederiksbergnyt.dk Authors: Vogelius, Peter;Vogelius, Peter;Aalborg University R... arrow_drop_down Aalborg University Research PortalOther ORP type . 2021Data sources: Aalborg University Research PortalVBN; Aalborg University Research PortalOther ORP type . 2021All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=dris___00956::cf55a5a3fa08664bccd3670f983f6767&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert Aalborg University R... arrow_drop_down Aalborg University Research PortalOther ORP type . 2021Data sources: Aalborg University Research PortalVBN; Aalborg University Research PortalOther ORP type . 2021All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=dris___00956::cf55a5a3fa08664bccd3670f983f6767&type=result"></script>'); --> </script>
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