Study on Naturally Ventilated Double-skin Facade in Hot and Humid Climate
| Main Author: | Mulyadi, Rosady |
|---|---|
| Format: | Thesis |
| Terbitan: |
, 2012
|
| Subjects: | |
| Online Access: |
http://repository.unhas.ac.id/handle/123456789/2364 |
| ctrlnum |
123456789-2364 |
|---|---|
| fullrecord |
<?xml version="1.0"?>
<dc schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd"><title>Study on Naturally Ventilated Double-skin Facade in Hot and Humid Climate</title><creator>Mulyadi, Rosady</creator><subject>Naturally ventilated double-skin fa??ade, hot and humid climate, solar heat gain, thermal transmittance, energy efficient, and energy consumption</subject><description>This research aims to study the possibility of the application, to analyze the thermal performance, and to figuring the energy performance of naturally ventilated double-skin fa??ade in the hot and humid climate region with Indonesia???s climate as a case study. Ventilated double-skin fa??ade can be defined as a fa??ade construction, which comprises of the outer glass, the shading device, and the inner glass. The outer glass and the inner glass form a cavity air space as a channel for the air flow to pass from the lower air inlet to the upper air outlet.The research runs firstly by numerical simulation to predict the solar heat gain and the thermal performance of the cases. The cases were based on the combination of the thickness of the glass skin and the distance between the outer and inner glasses, including the orientation of double-skin fa??ade. The result of the numerical simulation hereafter was used to calculate the U-value and the Shading Coefficient (SC) of the double-skin fa??ades. After determining the U-value and the SC of double-skin fa??ade, the next step of the research was to calculate the heat load of the double-skin fa??ade model building using MicroHASP/TES. The heat load resulted from the calculation tool was used to designing the air-conditioning system of the double-skin fa??ade building model and then simulated it using LCEM Tool afterward to evaluate the energy performance of the building model.The results of the numerical calculation show that the naturally ventilated double-skin fa??ade was effective to minimize the solar heat gain and the thermal transmittance. Proper combination of the thickness of the outer and the inner glasses can significantly reduce the solar heat gain as well as the proper arrangement of the distance between the outer and the inner glasses can reduce the thermal transmittance. In comparison to the single-skin fa??ade, naturally ventilated double-skin fa??ade was perform better in reducing heat load with no condensation occurred on the surface of the inner glass during building operation time from 08:00-17:00, even at rainy season. Moreover, reflectance, absorptance, and transmittance of solar radiation in double-skin fa??ade are varying based on the angle incidence of solar radiation. When the angle incidence is lower than 70??, the percentage of transmittance, reflectance and absorptance of the solar radiation is low and relatively constant. The percentage of reflected solar radiation will increase rapidly and the percentage of absorbed and transmitted solar radiation will decrease when the solar incidence angle is higher than 70??.Furthermore, the simulation on the energy performance of ventilated double-skin fa??ade showed the advantages in reducing primary energy consumption. The annual total energy consumption of the double-skin fa??ade window system was 12% lower than other window systems (8mm single-glass and 6mm pair glass window types). Moreover, the system COP for both 8mm glass single-skin fa??ade and 6mm pair glass was 3.21, and double-skin fa??ade window system is 3.32. The system COP can be improved by installing double-skin fa??ade obviously. Consequently, the ventilated double-skin fa??ade is efficient and useful in reducing energy consumption in buildings in the hot and humid climate area.</description><date>2012-10-30T23:43:55Z</date><date>2012-10-30T23:43:55Z</date><date>2012-10-31</date><type>Thesis:Thesis</type><identifier>http://repository.unhas.ac.id/handle/123456789/2364</identifier><language>en_US</language><recordID>123456789-2364</recordID></dc>
|
| format |
Thesis:Thesis Thesis |
| author |
Mulyadi, Rosady |
| title |
Study on Naturally Ventilated Double-skin Facade in Hot and Humid Climate |
| publishDate |
2012 |
| topic |
Naturally ventilated double-skin fa??ade hot and humid climate solar heat gain thermal transmittance energy efficient and energy consumption |
| url |
http://repository.unhas.ac.id/handle/123456789/2364 |
| contents |
This research aims to study the possibility of the application, to analyze the thermal performance, and to figuring the energy performance of naturally ventilated double-skin fa??ade in the hot and humid climate region with Indonesia???s climate as a case study. Ventilated double-skin fa??ade can be defined as a fa??ade construction, which comprises of the outer glass, the shading device, and the inner glass. The outer glass and the inner glass form a cavity air space as a channel for the air flow to pass from the lower air inlet to the upper air outlet.The research runs firstly by numerical simulation to predict the solar heat gain and the thermal performance of the cases. The cases were based on the combination of the thickness of the glass skin and the distance between the outer and inner glasses, including the orientation of double-skin fa??ade. The result of the numerical simulation hereafter was used to calculate the U-value and the Shading Coefficient (SC) of the double-skin fa??ades. After determining the U-value and the SC of double-skin fa??ade, the next step of the research was to calculate the heat load of the double-skin fa??ade model building using MicroHASP/TES. The heat load resulted from the calculation tool was used to designing the air-conditioning system of the double-skin fa??ade building model and then simulated it using LCEM Tool afterward to evaluate the energy performance of the building model.The results of the numerical calculation show that the naturally ventilated double-skin fa??ade was effective to minimize the solar heat gain and the thermal transmittance. Proper combination of the thickness of the outer and the inner glasses can significantly reduce the solar heat gain as well as the proper arrangement of the distance between the outer and the inner glasses can reduce the thermal transmittance. In comparison to the single-skin fa??ade, naturally ventilated double-skin fa??ade was perform better in reducing heat load with no condensation occurred on the surface of the inner glass during building operation time from 08:00-17:00, even at rainy season. Moreover, reflectance, absorptance, and transmittance of solar radiation in double-skin fa??ade are varying based on the angle incidence of solar radiation. When the angle incidence is lower than 70??, the percentage of transmittance, reflectance and absorptance of the solar radiation is low and relatively constant. The percentage of reflected solar radiation will increase rapidly and the percentage of absorbed and transmitted solar radiation will decrease when the solar incidence angle is higher than 70??.Furthermore, the simulation on the energy performance of ventilated double-skin fa??ade showed the advantages in reducing primary energy consumption. The annual total energy consumption of the double-skin fa??ade window system was 12% lower than other window systems (8mm single-glass and 6mm pair glass window types). Moreover, the system COP for both 8mm glass single-skin fa??ade and 6mm pair glass was 3.21, and double-skin fa??ade window system is 3.32. The system COP can be improved by installing double-skin fa??ade obviously. Consequently, the ventilated double-skin fa??ade is efficient and useful in reducing energy consumption in buildings in the hot and humid climate area. |
| id |
IOS5831.123456789-2364 |
| institution |
Universitas Hasanuddin |
| institution_id |
29 |
| institution_type |
library:university library |
| library |
Perpustakaan Universitas Hasanuddin |
| library_id |
491 |
| collection |
Repositori Universitas Hasanuddin |
| repository_id |
5831 |
| city |
KOTA MAKASSAR |
| province |
SULAWESI SELATAN |
| shared_to_ipusnas_str |
1 |
| repoId |
IOS5831 |
| first_indexed |
2018-07-01T15:17:44Z |
| last_indexed |
2018-07-01T15:17:44Z |
| recordtype |
dc |
| _version_ |
1674492676429316096 |
| score |
17.608942 |