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Sajal Chowdhury
Hokkaido University
EngineeringThermal comfortFactoryArchitectural engineeringEnergy consumption
9Publications
3H-index
22Citations
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Publications 9
Newest
#1Sajal ChowdhuryH-Index: 3
view all 6 authors...
#1Sajal ChowdhuryH-Index: 3
#2Yasuhiro HamadaH-Index: 22
Last. Khandaker Shabbir AhmedH-Index: 4
view all 3 authors...
Source
#1Sajal Chowdhury (Chittagong University of Engineering & Technology)H-Index: 3
#2Yasuhiro Hamada (Hokkaido University)H-Index: 22
Last. Khandaker Shabbir Ahmed (BUET: Bangladesh University of Engineering and Technology)H-Index: 4
view all 3 authors...
Abstract This study is based on labor intensive factory, located in Dhaka, Bangladesh which was adversely impacted due to extreme hot conditions. The analysis started with the implementation of green roof (GR) as one of the passive design strategies to reduce indoor heat stress. Impact of indoor heat stress indicated by wet bulb globe temperature (WBGT) and prediction of heat strain (PHS) model for green roof have been evaluated through numerical studies and indoor environmental data of local fa...
Source
#1Sajal Chowdhury (Chittagong University of Engineering & Technology)H-Index: 3
#2Yasuhiro Hamada (Hokkaido University)H-Index: 22
Last. Khandaker Shabbir Ahmed (BUET: Bangladesh University of Engineering and Technology)H-Index: 4
view all 3 authors...
Abstract From field monitoring, it has been observed that in readymade garments (RMG) production spaces, thousands of workers have been worked day long and might have probability of different thermal perceptions. As thermal comfort is the crucial phenomenon for workers, for the reduction of excessive indoor heat, using HVAC cooling strategies are the most critical segments in energy consumption. This paper describes an experimental study about assessment of different indoor environmental steps t...
3 CitationsSource
#1Sajal Chowdhury (Chittagong University of Engineering & Technology)H-Index: 3
#2Yasuhiro Hamada (Hokkaido University)H-Index: 22
Last. Khandaker Shabbir Ahmed (BUET: Bangladesh University of Engineering and Technology)H-Index: 4
view all 3 authors...
Abstract In recent years, due to lack of considerations of indoor thermal condition as well as increasing global temperature has led to rapid increase of heatstroke patients at workplaces. In such context predicting overheated environment is becoming an imperative for the industry. From field monitoring, it was observed that production spaces in Readymade Garments (RMG) were adversely impacted by excessively hot indoor environments, and yet thousands of workers toiling away their days doing prod...
6 CitationsSource
#1Sajal Chowdhury (Hokkaido University)H-Index: 3
#2Khandaker Shabbir Ahmed (BUET: Bangladesh University of Engineering and Technology)H-Index: 4
Last. Yasuhiro Hamada (Hokkaido University)H-Index: 22
view all 3 authors...
Abstract In this research the thermal performance of ready-made garments (RMG) factory building's envelope has been measured on the basis of internationally established indoor thermal comfort range for the workers. A three-dimensional model has been developed to conduct thermal simulations for typical RMG factory. The simulated factory has been divided into three different zones based on their activities and results have been analyzed by means of statistical distributions. Two types of variables...
6 CitationsSource
#1Sajal ChowdhuryH-Index: 3
#2M. R. AlamH-Index: 5
In Bangladesh Garments Factories are playing a vital role in the field of economical development but over the last 32 years these factories have been highly criticized for the hazardous working environment in the production floor in which high thermal gains from the artificial lighting, poor natural lighting system, excessive heat from the upper metal roofing system are common phenomenon. Most of our Garments Factories do not consider building depth, building height, volume, equipments and numbe...
2 CitationsSource
#1M. R. AlamH-Index: 5
#2Sajal ChowdhuryH-Index: 3
Climate changing has been a debated issue during the last few years. Some institutes in different countries have worked on this subject. Several future climate predictions have been generated. Each future climate is based on some assumptions and consequently has some uncertainties. These uncertainties are dragged to the building simulation results by using the climate data for assessing the future performance of buildings. Bangladesh is newly a developing country. Many more construction is going...
Source
#1Sajal ChowdhuryH-Index: 3
#2M. R. AlamH-Index: 5
view all 3 authors...
Daylight is the main contributor to save the energy consumption in the residential building because it is the most valuable natural resources available to architects and engineers to develop the visual quality of interior spaces. It is accredited that a significant reduction in artificial lighting and subsequent primary energy consumption can be achieved by maximizing the use of natural lighting (daylight). Therefore, strategies are needed for more daylight inclusion in the interiors of the resi...
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