In the present study, the energy and exergoeconomic analysis for all energy transmission systems from the primary energy source to the energy transfer from the building's envelope for a three-floor building with educational use is presented. The first step is to calculate the energy demand or the heating load required by the Carrier software for all the space. By writing the energy equations, exergy flows of the heating system and total exergy are calculated in different parts of energy dissipation and exergy, as well as the cost of each heating system component. The second stage identifies the undesirable thermodynamic processes of the system based on the determination of exergy losses and calculates the parameter Rex as the thermodynamic losses rate. The third step is to determine the most feasible reform based on the exergy-economic concepts, so that a parameter called the ECE is calculated as the effectiveness of the exergy cost for all energy transmission systems from the primary energy source to the energy transfer from the building's coatings. Consequently, the most energy dissipation and exergy is related to the production stage and are 188.80, 295.42 kW, respectively. Also, by calculating Rex and ECE, it is determined that hot water boilers and energy production stage need more to be optimized and improved.
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