Thermal Performance and Energy Efficiency of Naturally Ventilated Classrooms: A Case Study on Some Urban School Buildings Located in Bangladesh

International Journal of Research and Innovation in Social Science (IJRISS) | Volume VI, Issue V, May 2022 | ISSN 2454–6186

Thermal Performance and Energy Efficiency of Naturally Ventilated Classrooms: A Case Study on Some Urban School Buildings Located in Bangladesh

A. F. M. Mohiuddin Akhand
Department of Interior Architecture, Shanto-Mariam University, Dhaka

Abstract: The paper mainly concentrates on the thermal performance of the naturally ventilated classrooms of the urban school buildings in Sylhet in Bangladesh. The focus lays on the significance of naturally ventilated classrooms in specific climatic zones the energy efficiency issues where some of those pictures based on the review of the prevailing ideas in the literature and case studies as well. The notion of the thermal impacts due to the natural ventilation is not merely a perceptual entity but also a physical reality. The aim behind the study is to determine the characteristic features of natural ventilation to visualize the theme of thermal environment inside of the classrooms and to understand the collective impacts from the present scenario of ventilation pattern. But, now, it has been identified that the concept of naturally ventilated buildings encompasses the energy efficiency, identity and amiability of the existent features. It comprises a significant physical comfort, healthy thermal environment and also minimizes the use of electricity and energy as well.

Keywords: Natural Ventilation, Thermal Performance, Urban School Buildings, Composite Climate, Energy Efficiency

I. INTRODUCTION

Natural ventilation involves harnessing naturally available forces to supply and removing air through an enclosed space. There are three types of natural ventilation occurring in buildings: wind driven ventilation, pressure-driven flows, and stack ventilation. The pressures generated by ‘the stack effect’ rely upon the buoyancy of heated or rising air. wind driven ventilation relies upon the force of the prevailing wind to pull and push air through the enclosed space as well as through breaches in the building’s envelope (see Infiltration (HVAC)). Natural ventilation is generally impractical for larger buildings, as they tend to be large, sealed and climate controlled specifically by HVAC systems. Both are examples of passive engineering and have applications in renewable energy. The rationale of the study is to evaluate the thermal condition and its impact on the students’ performances in the naturally ventilated classrooms in the urban school buildings of Sylhet. Sharmin et al. (2015) had disclosed the thermal environment of urban spaces plays a great role on the quality of life in a city. It directly affects people’s behaviour and usage of outdoor spaces, studied on outdoor u

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