Passive Cooling Numerous Revolutionary Articles

Question: Describe about the Passive Cooling for Numerous Revolutionary Articles. Answer: Passive cooling is the 10th chapter written by Norbert Lechnar and this fourth edition published in 2015. The author is Professor Emeritus in the College of Architecture and Construction at Auburn University and also a registered architect in state of Alabama (Lechnar, 2015, p286). There are numerous revolutionary articles have been written by Norbert Lechnar related to sustainability of a building and how does cooling is imperative to maintain the sustainability of the building. Based on the information given in the chapter some valuable conclusion would be withdrawn related to need of cooling in building to maintain the sustainability (Lechnar, 2015, p287). The primary purpose of the report is to illustrate a summary of passive cooling mentioned in the 10th chapter of the book and to understand the need of cooling for the sustainability of buildings. This particular subject provide a valuable insight to how cooling can be carried out within the buildings that will ensure sustainability in terms of mechanical and physical reliability over the time (Lechnar, 2015, p290). The aim behind this analysis is to make civil engineer aware of the necessities and criteria required for cooling within the buildings. A specific introduction of passive cooling of different buildings and the associated factors has been analyzed briefly, followed by a detailed summary that includes the characteristics and properties and criterias required in the buildings for the purpose of cooling (Lechnar, 2015, p301). Finally, it discussed the fundamental details of airflow and ventilation process as well as illustrated the evaporative cooling system critically. This chapter particularly describes the heat avoidance techniques and most importantly, comfort ventilation process could be utilized for humidity control where the humidity of the climate is very high (Lechnar, 2015, p306). The building mass has been cooled with the help of night-flush cooling and most importantly, the passive cooling is feasible in case of dry climates and where the humidity of air is low. Besides this, it also explains the general theorem of air flow within the building that always flows from positive pressure area to negative pressure area (Lechnar, 2015, p311). It begins by stating the heat avoidance techniques of the buildings with the help of minimizing the heat gain of the building. It is also evident from the study that heat avoidance is not quite effective in summer and for this, we need to implement passive cooling strategies (Lechnar, 2015, p314). A brief history of cooling strategies and implementation has been illustrated that provide a positive insight of the effectiveness of passive cooling strategies in different parts of work with the time. The sustainable cooling strategies is comprise of three stages or the three-tier design approach such as Mechanical cooling, passive cooling and heat avoidance respectively (Lechnar, 2015, p316). The section continues with the detailed summary of the passive cooling strategies and techniques for building stress. (Lechnar, 2015, p319), stated that, particularly in hot and dry climates the shading and thermal mass could be maximized but in the mean time the natural ventilation has to increased significantly for better outcome. Here, passive cooling regarded as one of the most innovative modern techniques available for cooling and primarily the natural process are being used in passive cooling techniques but in this context, the author regarded hybrid system of building when large fans and electrical system has been implemented that generate significant amount of energy (Lechnar, 2015, p304). Passive cooling system generally involves five types of cooling system such as cooling with ventilation which consist of two stages comfort cooling and night- flash cooling, Radiant cooling, evaporative cooling that also consist of two stages direct evaporation and indirect evaporation, Earth cooling and dehumidification with a desiccant (Lechnar, 2015, p298). Different principles of air flow have been illustrated effectively that helps in understanding the proper use of ventilation and placement of ventilation corridor to thermal capacity control of the building. The pattern of air flow could be influenced by several factors such as site conditions, window locations, fin falls etc (Lechnar, 2015, p291). In the conclusion, the chapter provides clear and precise idea regarding the advantages of passive cooling that can be provided to the buildings and the effective and suitable techniques of cooling has to be adapted by the civil engineer in order to provide maximum reliability as well as suitability of the buildings (Lechnar, 2015, p309). There are some factors need to be consider while adapting cooling approach of buildings as per the climate condition and humidity. It is imperative to implement the passive cooling techniques as per the space and need of the buildings and particularly in dry climates direct evaporate cooling is more effect than other available process, whereas indirect cooling method is highly effective on the areas of having high humid conditions (Lechnar, 2015, p324). Cooling toward could be more useful for summer ventilation. Heat avoidance provides reliability and sustainability of the building and that is why it is very important particularly for sustainable buildings to enhance the life cycle of the building. Reference Lechnar, N. 2015, Heating, Cooling, Lighting, New Jersey: John Wily and Sons, Inc. 4th edition, pp. 286-324.