Design Optimization of a Small-Scale Polygeneration Energy System in Different Climate Zones in Iran

Sara Ghaem Sigarchian,Viktoria Martin,Anders Malmquist

doi:10.3390/en11051115

Sara Ghaem Sigarchian, Viktoria Martin + Show 1 more

Open Access

https://doi.org/10.3390/en11051115

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Journal: Energies	Publication Date: May 2, 2018
Citations: 12	License type: CC BY 4.0

Affiliation: KTH Royal Institute of Technology

Abstract

Design and performance of polygeneration energy systems are highly influenced by several variables, including the climate zone, which can affect the load profile as well as the availability of renewable energy sources. To investigate the effects, in this study, the design of a polygeneration system for identical residential buildings that are located in three different climate zones in Iran has been investigated. To perform the study, a model has previously developed by the author is used. The performance of the polygeneration system in terms of energy, economy and environment were compared to each other. The results show significant energetic and environmental benefits of the implementation of polygeneration systems in Iran, especially in the building that is located in a hot climate, with a high cooling demand and a low heating demand. Optimal polygeneration system for an identical building has achieved a 27% carbon dioxide emission reduction in the cold climate, while this value is around 41% in the hot climate. However, when considering the price of electricity and gas in the current energy market in Iran, none of the systems are feasible and financial support mechanisms or other incentives are required to promote the application of decentralized polygeneration energy systems.

Highlights

The share of total delivered energy in the building sector is around 20% and the share of total primary energy consumption is around 31% worldwide, which is predicted to increase by an average value of 1.5% annually from 2012 to 2040 [1,2]
Evaluation fuel consumption in Hamedan is mainly due to the high heating demand and high amount of consumption in Hamedan is mainly due to the high heating demand and high amount of imported
Fuel consumption in Hamedan is mainly due to the high heating demand and high amount of the grid

Summary

Introduction

The share of total delivered energy in the building sector is around 20% and the share of total primary energy consumption is around 31% worldwide, which is predicted to increase by an average value of 1.5% annually from 2012 to 2040 [1,2]. Due to the relatively high share of energy utilization in this sector, there is a big potential for fossil fuel consumption reduction. One of the alternative solutions to achieve higher efficiency, lower fuel consumption, and a higher share of renewable energy is the concept of decentralized combined cooling, heating, and power generation (CCHP), which is called polygeneration. In a polygeneration system, multiple energy sources, including renewable and non-renewable, are used to deliver multiple energy services simultaneously, resulting in lower emissions [5]

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Conclusion