Journal of Mechanical and Construction Engineering, 2022, Vol. 02, Iss. 02, S. No. 002, pp. 1-15 ISSN (Online): 2583-0619 ISSN (Online) : 2583-0619 1 Journal of Mechanical and Construction Engineering (JMCE) A2Z Journals Experimental Studies on Solar Chimney for Building Space Heating and Ventilation Enhancement: Energy, Exergy and Economic Analysis Shiv Lal Department of Mechanical Engineering, Rajasthan Technical University Kota, India shivlal1@gmail.com How to cite this paper: Author 1, Author 2 and Author 3, “Paper Ti- tle,” Journal of Mechanical and Construction Engineering (JMCE), Vol. 02, Iss. 02, S. No. 002, pp. 1–15, 2022. https://doi.org/10.54060/jmce.v2i2. 21 Received: 20/10/2022 Accepted: 07/11/2022 Published: 25/11/2022 Copyright © 2022 The Author(s). This work is licensed under the Creative Commons Attribution International License (CC BY 4.0). http://creativecommons.org/licens es/by/4.0/ Abstract Solar chimneys are with or without heat storage widely used for improving the ventila- tion and thermal comfort in buildings. The energy, exergy, economic analysis of solar chimney and the CO2 mitigations (EEEC) are evaluated in this communication. The improved solar chimney with MS plate and MS box was designed and developed by the author in the CBRI Roorkee. The observations of typical day of December have been taken for the presentation and the whole month data have been used to evaluate the EEEC parameters. The maximum energy efficiency has been observed by 26.68% dur- ing 12 hours of the typical day, and at the same time the exergy efficiency has ob- tained 3.69%. Approximately 2285kWh energy can be saved during a year through solar chimneys. The payback period of an improved solar chimney with MS plate (SCWMSP) is estimated to be less than one year and with MS box (SCWMSB)) it is likely to be one year. CO2 can also be saved with the energy conservation parameter ob- served saving of 4.37 ton / year CO2 by SCWMSP, on the other hand if SCWMSB have implemented than CO2 would be save by 5.51 ton/year. Keywords Energy, exergy, techno-economic analysis, CO2 mitigation 1. Introduction (Heading 1) Natural ventilation is the process of air supply contribution for indoor space by natural in-out method, significance of that is Open Access