Ventilation, Life Safety, and Smoke Extraction in Building

This course underscores the critical role of ventilation in maintaining indoor air quality, particularly in shared spaces like office environments. Using the example of an office space where numerous individuals continuously respire, the constant release of carbon dioxide necessitates a consistent introduction of fresh air to prevent air dilution. The natural ventilation system is explored in-depth, unraveling the mechanisms of the Stack effect and Wind effect. These concepts are not only instrumental in understanding natural ventilation but also serve as the basis for calculating pressure differentials between the windward and leeward sides of a building. Moving forward, the course delves into the basics of Mechanical Ventilation Systems, offering insights into their advantages and disadvantages compared to natural ventilation. This knowledge is crucial for selecting the appropriate ventilation system based on specific applications. Learners are guided through calculating ventilation equipment capacity using air flow rate calculation methods. Additionally, the course addresses the importance of Life Safety Systems in commercial buildings, covering various components that contribute to enhancing occupant safety. The focus then shifts to the significance of Staircase Pressurization Systems in ensuring building occupant life safety during emergencies. The intricate process of creating pressurization in staircases for efficient building evacuation is explored, accompanied by a sample calculation to determine the required equipment capacity. By the course's conclusion, learners will be adept at conducting air flow rate and staircase pressurization calculations, drawing from practical experiences on large projects. The course further expands its scope to Lift Well and Lift Lobby Pressurization Systems, explaining their critical role in maintaining safe exits during fire emergencies, thereby safeguarding both life and property. Learners gain an understanding of the guidelines set forth by the National Building Code (NBC) and the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) regarding these pressurization systems. The course delves into considerations of air leakages and gains in lift lobbies and wells, aiding in the calculation of pressurization fan capacities to meet standards. A crucial aspect covered in the course is the danger posed by smoke in emergency situations. Smoke extraction systems are explored in detail, encompassing various components and the requisite codes for designing such systems. National Building Code (NBC) standards are highlighted, providing students with a solid foundation for designing smoke extraction systems tailored to different spaces, including car parks, office spaces, and atriums. Upon completing this course, students not only acquire practical skills in air flow rate and pressurization calculations but also gain a profound understanding of the standards and codes governing ventilation, life safety, and smoke extraction systems. Target Learners: 1. Knowledge of Thermodynamics & Heat Transfer 2. Undergraduate students of Mechanical who are in either Vth, VIth, VIIth or VIIIth semester 3. Graduate students of Mechanical 4. Working professionals with B.Tech./B.E., in Mechanical 5. Diploma students of Mechanical

• Ventilation, Life Safety
• This module begins the importance of Ventilation to maintain the Indoor Air Quality. Significance of ventilation can explain with an example of any office space, where many people are working together. As we know people are continuously doing respiration in which they are consuming oxygen and constantly releasing carbon dioxide diluting the indoor air constantly. To maintain the quality of indoor air, fresh air needs to be introduced continuously. The module delves how the natural ventilation works and how Stack effect and Wind effect drive the Natural Ventilation. This concept is useful to calculate pressure difference between windward and leeward sides of the building The module explores the basics of Mechanical Ventilation System and its merits and demerits over the Natural ventilation based on application. It will be help full to select ventilation system as per requirement. Learners will calculate the ventilation equipment capacity for given application using air flow rate calculation methods & learn the need of Life Safety System in Commercial building and its various component. The module extends its focus to significance of Staircase Pressurization System for building occupant life safety. This will help to create pressurization in staircase which make pave to evacuate from building in emergency. Learners will understand very fascinating topic that how to arrive the required equipment capacity by understanding given sample calculation for given building layout. It will help to select equipment to match design condition. After completion of this module learners will familiar to carry out air flow rate & staircase pressurization calculation based on L & T experience on very large project.
• Smoke Extraction system
• The module begins with understanding significance of the Lift Well and Lift lobby pressurization system. Lift well & lift lobby pressurization system maintain safe exit during any fire emergency & save commodity and life. Students will acknowledge what National Building Code (NBC) and American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) says about the Lift Well and Lift Lobby Pressurization system. This will help students to be familiar with these standard and design Lift Well and Lift Lobby Pressurization system as per standard. The module delves into various air leakages and air gains from/to the lift lobby and lift well which help to arrive the capacity of pressurization fan. This will help to calculate total air leakage & select fan capacity to maintain standard pressurization in lift lobby and lift well. Student will come to how smoke is dangerous the occupant life and why smoke extraction system is so much important. The module explores the various component of Smoke Extraction system and code requirement while designing this system. Student will familiar with National Building Code (NBC) to design smoke extraction system. Students will understand minimum requirement for designing smoke extraction system for various spaces like Cark Park, Office spaces, Atriums, etc. After completion of this module students will familiar to carry out lift well & lift lobby pressurization calculation based on L & T experience on very large project. Also, students will aware of smoke extraction system standards, codes & calculation for car park, office space & attriums.