feny elsiana | Petra Christian University (original) (raw)
Papers by feny elsiana
Journal of Asian Architecture and Building Engineering, Nov 8, 2023
Dimensi : Journal of Archietecture and Built Environment (e-journal), Dec 18, 2023
International Journal of Application on Sciences , Technology and Engineering, May 31, 2023
Various daylight simulation tools, which are rapidly developed, become a reliable way for simulat... more Various daylight simulation tools, which are rapidly developed, become a reliable way for simulating the complex daylighting environment. Empirical validation of the daylight simulation tool is essential in determining its reliability, especially in simulating light transport and shading system in the Tropics. Distinct from previous research, the validation involves Horizontal Light Pipe (HLP), a side window with shading systems in different room aspect ratios and orientations. This study aims to validate the simulation results of Integrated Environmental Solutions-Virtual Environment (IES-VE) Radiance IES with the measurement results of physical scaled models for evaluating HLP, light shelves, and blinds' daylight performance under intermediate and overcast sky conditions. Two physical scaled models 1:10 represent office rooms with HLP and shading systems with different room aspect ratios were constructed. Daylight Factor (DF) and Daylight Ratio (DF) of physical scaled model measurement and IES-VE simulation were compared. The results showed that under intermediate and overcast sky conditions, the Pearson correlation between simulation and measurement results using DR and DF was strong, significant, and positive, as high as 0.84 and 0.80, respectively. The Mean Bias Error between simulation and measurement results under intermediate and overcast sky conditions were-12% and-7.7%, respectively. IES-VE is reliable to evaluate the HLP and shading systems' daylight performance with different room orientations in the Tropics.
DIMENSI (Journal of Architecture and Built Environment)
Horizontal light pipe (HLP) is a sustainable strategy for improving daylighting quality in buildi... more Horizontal light pipe (HLP) is a sustainable strategy for improving daylighting quality in buildings. The reflector is one of the HLP elements that collect and direct the incoming light in the pipe. Several reflector studies of HLP systems have been carried out in the last three decades under specific sunlight conditions at certain altitudes and azimuths or static conditions. This study proposes a dynamic reflector model in response to the movement of the sun angle. This study aimed to examine the impact of the dynamic reflector tilt angle on improving the quality of light by adapting the sun angle. The method used is an experimental simulation using IESVE software. This research is located in Surabaya, with a tropics climate. The results showed that modifying the reflector to be dynamic could increase the illuminance levels up to 29.9%, daylight factor values up to 29.2%, and uniformity ratio values up to 33.3%.
IOP Conference Series: Earth and Environmental Science, 2020
This study investigated the potential impacts of wind pressure and incident solar radiation on a ... more This study investigated the potential impacts of wind pressure and incident solar radiation on a building tilted façade installed with micro wind turbine and photovoltaic panels as a second skin façade for generating electricity. The wind pressure will affect wind turbine rotation, and solar radiation will affect the energy produced by the photovoltaic. The study used simulation modeling software to analyze the wind pressure and solar radiation received on the tilted façade. The research found that the force received by the tilted façade is more significant than that received by the 90° tilted fagade. The smaller the tilted-angle of the fagade, the more radiation received by the PV panel. Conversely, the larger tilted-angle of the building façade, the less radiation received by the photovoltaic, despite the wind pressure received by the wind turbine being higher than that received by the 90° tilt façade. However, the more radiation received by the fagade, the more heat received by t...
Journal of Asian Architecture and Building Engineering, 2022
IOP Conference Series: Earth and Environmental Science, 2018
Courtyard in a low-cost flat in the tropics provides daylight but it is usually protected with a ... more Courtyard in a low-cost flat in the tropics provides daylight but it is usually protected with a corridor to control the solar radiation. Surrounded by a shaded corridor, daylight level of the adjacent dwelling rooms around the courtyard are reduced. Modification of courtyard wall by integrating a sloped light shelf is proposed to improve the daylight level on dwelling room and control excessive light penetration at the corridor. Experiment with simulation as a tool was used as a research method. Illuminance value, Daylight Factor and uniformity ratio of the base case, a courtyard wall design in a typical low-cost flat in Surabaya (latitude 7º15'55''S) using louver and case, a proposed courtyard wall design using sloped light shelf were compared, simultaneously with daylighting standards. The results demonstrated that courtyard wall modification reduced excessive average illuminance on the corridor in the range of 41% to 57.1% and improved average illuminance in dwelling room in the range of 0.9% to 19.2%. The proposed courtyard wall also increased illuminance uniformity ratio in both corridor and dwelling room. In order to improve daylight quantity and quality, a courtyard wall with sloped light shelf can be applied on a low-cost flat in the tropics.
Intensive use of air conditioning encourages building’s plan to be deep with a minimum surface to... more Intensive use of air conditioning encourages building’s plan to be deep with a minimum surface to volume ratio. Modern air conditioned office building in the tropics are also applied external shading on windows or highly reflective glazing to minimize radiant heat gain. Those lead to the presence of areas that have insufficient daylight level at the work plane. Horizontal Light Pipe (HLP) is one of optical daylighting system that can guide daylight to these areas. Considering that distributing daylight evenly throughout room is important besides providing sufficient daylight level, a shading system, Reflective Louvre (RL) is applied. RL plays role in reducing daylight level at areas near to window and improving daylight uniformity inside room. The research’s aim is to evaluate and explain daylight quantity and distribution of HLP and RL at office space in the tropics. Experiment with physical model 1:10 was used as the research method. Illuminance was measured using HOBO U12/12 data...
IOP Conference Series: Earth and Environmental Science, 2020
Horizontal Light Pipe (HLP) is one of a light transport system that can guide daylight deeper int... more Horizontal Light Pipe (HLP) is one of a light transport system that can guide daylight deeper into building interiors. Improvement of HLP’s light distribution by installing an egg-crate reflector at its opening distribution was conducted. The study’s aim was to evaluate and explain the daylight performance of HLP with an egg-crate reflector at office space in the tropics. Experiment with physical scaled model 1:5 was used as a research method. Illuminance value, Daylight Factor (DF), uniformity ratio and diversity of illuminance of an office space lit by side window (base case) were compared to the office space lit by side window and HLP with an egg-crate reflector (case), simultaneously with daylighting standards. The results showed that HLP with egg-crate reflector improved daylight level and distribution. Improvement of DF and illuminance level were in the range of 16.6 % to 56.6 %. The uniformity ratio of the base case was in the range of 0.35 to 0.45, while in the case was in t...
Journal of Architecture and Built Environment, 2015
The Cardiovascular diseases have become the top killer since 1970 worldwide. In 2005, it was reco... more The Cardiovascular diseases have become the top killer since 1970 worldwide. In 2005, it was recorded the present of 5.7 million stroke survivors. On the other hand, healing stroke and its related complications required much more considerable time. So the patients’ wards quality especially related to wall colour become very important for the patients' recovery. The study was conducted with exploratory methods combining visual methods of research and Luscher colour test. Series of interviews were conducted to gather the users’ perception. So, it was found on that blue wall colour calmed the medical personals, patients, and their family. The most soothing Blue colour variant according to respondents was the Artic Blue (hue 9.8 B, value 7.4 and chroma 5.6).
For daylighting purpose, office buildings should have a shallow plan and increase the ratio of su... more For daylighting purpose, office buildings should have a shallow plan and increase the ratio of surface to building’s volume. However, intensive use of air-conditioning drives office building’s plan to be deep with a minimum surface to volume ratio. This leads to the presence of areas that have insufficient daylight level at the work plane. Considering limitations of some daylighting methods in distributing daylight to these areas, Horizontal Light Pipe (HLP) was selected. The aim of this research was to evaluate and explain the effect of HLP branching on daylight quantity and distribution inside open plan office space. Experimental with simulation as a tool was used as the research method. HLP branching’s uniformity ratio, illuminance and Daylight Factor were compared with unbranching HLP, simultaneously with daylighting standards. Results showed that office space with HLP-L branching had higher daylight level than HLP-T branching, 296 lux and 295 lux, HLP-L and HLP-T, respectively....
DIMENSI (Journal of Architecture and Built Environment)
A deep-plan office building design limits daylight access on the workspace distant from the side ... more A deep-plan office building design limits daylight access on the workspace distant from the side window. Horizontal Light Pipe (HLP) is one of the light transport systems that can deliver daylight to these areas. The research aim was to explain and evaluate the effect of HLP’s opening distribution area on daylight performance at deep plan-private office space. The research method was experimental with simulation as a tool. Daylight level and distribution of the base case, HLP with an opening distribution area of 6.6 m2 were compared with the case, HLP with an opening distribution area of 3.41 m2. The results showed that both cases distributed daylight uniformly. A 50% reduction of HLP’s opening distribution area, from 6.6 m2 to 3.41 m2 improved the average Daylight Factor as big as 6.42%. HLP with a smaller opening distribution area can be applied as the main source of daylight on deep-plan office spaces
Many high-rise office buildings in the tropics have a full-glazed facade and a deep open-plan spa... more Many high-rise office buildings in the tropics have a full-glazed facade and a deep open-plan space. Without any external shading, the office space has a non-uniform daylight distribution and glare problem. A deep open-plan space design also causes insufficient daylight levels in the area distant from the building perimeter. Previous studies about Horizontal Light Pipe (HLP) mainly focused on system improvement in capturing, transporting, and distributing daylight into deep space. Integration of HLP as a light transport system that can deliver daylight deeper into building interiors and shading systems consist of Light Shelf (LS), blinds that can redirect and reduce the excessive daylight level near the side window are proposed and studied. The research objective is to explain the daylight performance of the integration of HLP and shading systems. The research method is experimental with Radiance-based simulation as a tool. Surabaya (latitude 7.38° S and longitude 112.79° E), a typi...
Journal of Asian Architecture and Building Engineering, Nov 8, 2023
Dimensi : Journal of Archietecture and Built Environment (e-journal), Dec 18, 2023
International Journal of Application on Sciences , Technology and Engineering, May 31, 2023
Various daylight simulation tools, which are rapidly developed, become a reliable way for simulat... more Various daylight simulation tools, which are rapidly developed, become a reliable way for simulating the complex daylighting environment. Empirical validation of the daylight simulation tool is essential in determining its reliability, especially in simulating light transport and shading system in the Tropics. Distinct from previous research, the validation involves Horizontal Light Pipe (HLP), a side window with shading systems in different room aspect ratios and orientations. This study aims to validate the simulation results of Integrated Environmental Solutions-Virtual Environment (IES-VE) Radiance IES with the measurement results of physical scaled models for evaluating HLP, light shelves, and blinds' daylight performance under intermediate and overcast sky conditions. Two physical scaled models 1:10 represent office rooms with HLP and shading systems with different room aspect ratios were constructed. Daylight Factor (DF) and Daylight Ratio (DF) of physical scaled model measurement and IES-VE simulation were compared. The results showed that under intermediate and overcast sky conditions, the Pearson correlation between simulation and measurement results using DR and DF was strong, significant, and positive, as high as 0.84 and 0.80, respectively. The Mean Bias Error between simulation and measurement results under intermediate and overcast sky conditions were-12% and-7.7%, respectively. IES-VE is reliable to evaluate the HLP and shading systems' daylight performance with different room orientations in the Tropics.
DIMENSI (Journal of Architecture and Built Environment)
Horizontal light pipe (HLP) is a sustainable strategy for improving daylighting quality in buildi... more Horizontal light pipe (HLP) is a sustainable strategy for improving daylighting quality in buildings. The reflector is one of the HLP elements that collect and direct the incoming light in the pipe. Several reflector studies of HLP systems have been carried out in the last three decades under specific sunlight conditions at certain altitudes and azimuths or static conditions. This study proposes a dynamic reflector model in response to the movement of the sun angle. This study aimed to examine the impact of the dynamic reflector tilt angle on improving the quality of light by adapting the sun angle. The method used is an experimental simulation using IESVE software. This research is located in Surabaya, with a tropics climate. The results showed that modifying the reflector to be dynamic could increase the illuminance levels up to 29.9%, daylight factor values up to 29.2%, and uniformity ratio values up to 33.3%.
IOP Conference Series: Earth and Environmental Science, 2020
This study investigated the potential impacts of wind pressure and incident solar radiation on a ... more This study investigated the potential impacts of wind pressure and incident solar radiation on a building tilted façade installed with micro wind turbine and photovoltaic panels as a second skin façade for generating electricity. The wind pressure will affect wind turbine rotation, and solar radiation will affect the energy produced by the photovoltaic. The study used simulation modeling software to analyze the wind pressure and solar radiation received on the tilted façade. The research found that the force received by the tilted façade is more significant than that received by the 90° tilted fagade. The smaller the tilted-angle of the fagade, the more radiation received by the PV panel. Conversely, the larger tilted-angle of the building façade, the less radiation received by the photovoltaic, despite the wind pressure received by the wind turbine being higher than that received by the 90° tilt façade. However, the more radiation received by the fagade, the more heat received by t...
Journal of Asian Architecture and Building Engineering, 2022
IOP Conference Series: Earth and Environmental Science, 2018
Courtyard in a low-cost flat in the tropics provides daylight but it is usually protected with a ... more Courtyard in a low-cost flat in the tropics provides daylight but it is usually protected with a corridor to control the solar radiation. Surrounded by a shaded corridor, daylight level of the adjacent dwelling rooms around the courtyard are reduced. Modification of courtyard wall by integrating a sloped light shelf is proposed to improve the daylight level on dwelling room and control excessive light penetration at the corridor. Experiment with simulation as a tool was used as a research method. Illuminance value, Daylight Factor and uniformity ratio of the base case, a courtyard wall design in a typical low-cost flat in Surabaya (latitude 7º15'55''S) using louver and case, a proposed courtyard wall design using sloped light shelf were compared, simultaneously with daylighting standards. The results demonstrated that courtyard wall modification reduced excessive average illuminance on the corridor in the range of 41% to 57.1% and improved average illuminance in dwelling room in the range of 0.9% to 19.2%. The proposed courtyard wall also increased illuminance uniformity ratio in both corridor and dwelling room. In order to improve daylight quantity and quality, a courtyard wall with sloped light shelf can be applied on a low-cost flat in the tropics.
Intensive use of air conditioning encourages building’s plan to be deep with a minimum surface to... more Intensive use of air conditioning encourages building’s plan to be deep with a minimum surface to volume ratio. Modern air conditioned office building in the tropics are also applied external shading on windows or highly reflective glazing to minimize radiant heat gain. Those lead to the presence of areas that have insufficient daylight level at the work plane. Horizontal Light Pipe (HLP) is one of optical daylighting system that can guide daylight to these areas. Considering that distributing daylight evenly throughout room is important besides providing sufficient daylight level, a shading system, Reflective Louvre (RL) is applied. RL plays role in reducing daylight level at areas near to window and improving daylight uniformity inside room. The research’s aim is to evaluate and explain daylight quantity and distribution of HLP and RL at office space in the tropics. Experiment with physical model 1:10 was used as the research method. Illuminance was measured using HOBO U12/12 data...
IOP Conference Series: Earth and Environmental Science, 2020
Horizontal Light Pipe (HLP) is one of a light transport system that can guide daylight deeper int... more Horizontal Light Pipe (HLP) is one of a light transport system that can guide daylight deeper into building interiors. Improvement of HLP’s light distribution by installing an egg-crate reflector at its opening distribution was conducted. The study’s aim was to evaluate and explain the daylight performance of HLP with an egg-crate reflector at office space in the tropics. Experiment with physical scaled model 1:5 was used as a research method. Illuminance value, Daylight Factor (DF), uniformity ratio and diversity of illuminance of an office space lit by side window (base case) were compared to the office space lit by side window and HLP with an egg-crate reflector (case), simultaneously with daylighting standards. The results showed that HLP with egg-crate reflector improved daylight level and distribution. Improvement of DF and illuminance level were in the range of 16.6 % to 56.6 %. The uniformity ratio of the base case was in the range of 0.35 to 0.45, while in the case was in t...
Journal of Architecture and Built Environment, 2015
The Cardiovascular diseases have become the top killer since 1970 worldwide. In 2005, it was reco... more The Cardiovascular diseases have become the top killer since 1970 worldwide. In 2005, it was recorded the present of 5.7 million stroke survivors. On the other hand, healing stroke and its related complications required much more considerable time. So the patients’ wards quality especially related to wall colour become very important for the patients' recovery. The study was conducted with exploratory methods combining visual methods of research and Luscher colour test. Series of interviews were conducted to gather the users’ perception. So, it was found on that blue wall colour calmed the medical personals, patients, and their family. The most soothing Blue colour variant according to respondents was the Artic Blue (hue 9.8 B, value 7.4 and chroma 5.6).
For daylighting purpose, office buildings should have a shallow plan and increase the ratio of su... more For daylighting purpose, office buildings should have a shallow plan and increase the ratio of surface to building’s volume. However, intensive use of air-conditioning drives office building’s plan to be deep with a minimum surface to volume ratio. This leads to the presence of areas that have insufficient daylight level at the work plane. Considering limitations of some daylighting methods in distributing daylight to these areas, Horizontal Light Pipe (HLP) was selected. The aim of this research was to evaluate and explain the effect of HLP branching on daylight quantity and distribution inside open plan office space. Experimental with simulation as a tool was used as the research method. HLP branching’s uniformity ratio, illuminance and Daylight Factor were compared with unbranching HLP, simultaneously with daylighting standards. Results showed that office space with HLP-L branching had higher daylight level than HLP-T branching, 296 lux and 295 lux, HLP-L and HLP-T, respectively....
DIMENSI (Journal of Architecture and Built Environment)
A deep-plan office building design limits daylight access on the workspace distant from the side ... more A deep-plan office building design limits daylight access on the workspace distant from the side window. Horizontal Light Pipe (HLP) is one of the light transport systems that can deliver daylight to these areas. The research aim was to explain and evaluate the effect of HLP’s opening distribution area on daylight performance at deep plan-private office space. The research method was experimental with simulation as a tool. Daylight level and distribution of the base case, HLP with an opening distribution area of 6.6 m2 were compared with the case, HLP with an opening distribution area of 3.41 m2. The results showed that both cases distributed daylight uniformly. A 50% reduction of HLP’s opening distribution area, from 6.6 m2 to 3.41 m2 improved the average Daylight Factor as big as 6.42%. HLP with a smaller opening distribution area can be applied as the main source of daylight on deep-plan office spaces
Many high-rise office buildings in the tropics have a full-glazed facade and a deep open-plan spa... more Many high-rise office buildings in the tropics have a full-glazed facade and a deep open-plan space. Without any external shading, the office space has a non-uniform daylight distribution and glare problem. A deep open-plan space design also causes insufficient daylight levels in the area distant from the building perimeter. Previous studies about Horizontal Light Pipe (HLP) mainly focused on system improvement in capturing, transporting, and distributing daylight into deep space. Integration of HLP as a light transport system that can deliver daylight deeper into building interiors and shading systems consist of Light Shelf (LS), blinds that can redirect and reduce the excessive daylight level near the side window are proposed and studied. The research objective is to explain the daylight performance of the integration of HLP and shading systems. The research method is experimental with Radiance-based simulation as a tool. Surabaya (latitude 7.38° S and longitude 112.79° E), a typi...