Md. Rabiul Alam

Underground soil and thermal conductivity materials based heat reduction for energy-efficient building in tropical environment

In this paper, an alternative way of releasing heat of building is investigated in order to reduce energy demand of building built in tropical environment. Underground soil is considered as a source for extracting heat from building through thermal conductivity pipes. Thermal conductivity pipes are considered to be fixed on the inner faces of the walls and their lower part to be inserted to the ground where temperature is lower than the indoor temperature. The entire analyses were done numerically using ANSYS 11. Heat flow between two systems was studied and the performance of the thermal conductivity pipes was examined. The room temperature in the presence of thermal conductivity pipes as well as mechanical cooling system and other passive energy-efficient techniques of building were also studied. The underground soil was demonstrated to act as a heat sink and absorb heat released from the rooms and the thermal conductivity pipes would play a role in transferring heat from the rooms to the underground soil. The system works efficiently when it is used with other mechanical or passive cooling systems. In this way, energy saving measure could be possible to reduce building temperatures by around 3℃.

Design Approach of Energy Efficient Ready Made Garments Factory in View of Thermal Comfort

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 number of storey which factors are very essential to make factory energy efficient. This paper identifies the cause of poor and unhealthy working condition of Garments Factories in Dhaka and detail analysis in view of Thermal Comfort level to make garment factory energy efficient by a design approach with the help of building simulation tools such as Radiance, Eco-tech, Dia-Lux etc.

Mechanical and physical properties of slate from Britannia Cove, Newfoundland

The experimental investigation described in this study was carried out to determine the physical and mechanical properties (elastic moduli, Poisson’s ratio, compressive and tensile strengths, hardn...

Daylight Performance and Energy Consumption in a Simple Room of Residential Building in Dhaka City, Bangladesh

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 residential building where electricity demand is very high. The main objectives of this study are to identify parameters of day lighting that can help to save energy consumption and to develop the daylight performances in a simple room in residential building in Dhaka city, Bangladesh. This study also helps the Bangladesh National Building Code (BNBC) to identify the minimum daylight parameters for a typical residential building which is constructed by local materials.

Integration of Performance Based Modeling Techniques with Building Design Method (Industry/Factory) Considering Energy Efficiency in Bangladesh

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 on in full swing now days. This rapid construction is changing our earth surface very quickly. So that it increases heat on earth surface, energy consumption, decrease the comfort level. The answer to this challenging situation is the adoption of a holistic design approach, whereby the different disciplines required is brought together and interacts since the first steps of the design process. This study revealed the present implementation status of factory building sector energy standards in Bangladesh, implications for sustainable energy efficient designs in factory building and increasing demand for sustainable energy efficient industrial building.