A Design Chart to Determine the Total Emitted Quantity of Heat from the Users, Within a Functional Space, as a Function of Their Mass, Height, Activity, and Number

Document Type : Original Article

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Architectural Systems Engineering, October University for Modern Sciences and Arts (MSA), Giza, Egypt

Abstract

Casual heat gains should be calculated accurately to determine the actual heat emissions, within a functional space. Casual heat gains are emitted from different equipment, fixtures, and users. The paper’s main objective is to create a design chart. This design chart could be used to determine the total emitted quantity of heat from the users, within a functional space, as a function of their mass, height, activity, and number. The Design chart comprises three integrated graphs. The first graph illustrates an estimate of the body surface area using DuBois formula as a function of the body mass and height. The second graph represents the power density, per unit body surface area of the user, depending on the activity level. The third graph indicates the number of users, within that functional space. Using the three graphs of the design chart would result in finding the total quantity of heat emitted from the users, within a functional space, which in turn would be beneficial, especially in the preliminary stages of design, to address such amount of emitted heat which would affect the decisions that are taken to ensure the achievement of thermal comfort for the users.

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MSA Engineering Journal
Volume 4, Issue 2 - Serial Number 7
Special issue on "Sustainability and Beyond: Prospects in the Built Environment!" ASE Conference
July 2025
Pages 1-9

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