Title: Energy and exergy analysis of the heating and cooling system of a public building

Authors: Sezer Sevim; Ali Yurddaş

Addresses: Department of Mechanical Engineering, Manisa Celal Bayar University, 45140 Manisa, Turkey ' Department of Mechanical Engineering, Manisa Celal Bayar University, 45140 Manisa, Turkey

Abstract: Efficient use of energy spent in existing systems is of great importance in terms of energy saving. The aim of this study was to carry out the energy and exergy analyses of the existing heating and cooling systems of a public building and determine the system performances, and bring the system to a thermoeconomic structure by making necessary improvements. In the building, natural gas is used as energy source (fuel) in hot water boilers within the existing heating installation, and electricity is used as energy source in air-cooled water chillers within the cooling system. As a result of the calculations, it was determined that the biggest exergy destruction in the heating system was in the hot water boiler and the biggest exergy destruction in the cooling system was in the water chiller. Other point data obtained were evaluated and heating and cooling system efficiencies were determined.

Keywords: energy analysis; exergy analysis; HVAC; efficiency; building.

DOI: 10.1504/IJEX.2020.108181

International Journal of Exergy, 2020 Vol.32 No.2, pp.186 - 212

Received: 02 Oct 2019
Accepted: 26 Jan 2020
Published online: 03 Jul 2020 *

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