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EXPERIMENTAL MEASUREMENTS AND TRNSYS SIMULATIONS OF ENERGY CONSUMPTION AND ENERGY EFFICIENCY OF HVAC SYSTEMS IN COOLING MODE IN OFFICE BUILDINGS

Assis. Prof. Dr. Marius Adam, Assoc. Prof. Dr. Mihai Cinca, Assoc. Prof. Dr. Olga Bancea, PhD. Eng. Cristian Heredea

First published: 2017-11-20https://doi.org/10.5593/sgem2017h/43/s29.084View metrics

Abstract

This paper provides a comparative study of the energy consumption and energy efficiency of a heating ventilation and air-conditioning (HVAC) system with three configurations. This system was used to cool an experimental room in an office building in more control scenarios realized by adopting different cooled water temperatures and chiller cooling systems. It is proposed an airпїЅwater mist cooled system for an air-cooled chiller. The three configurations of the HVAC system have the following configurations: (1) air handling unit (AHU) and fan-coil units (FCUs); (2) air handling unit (AHU); and (3) heat recovery unit (HRU) and fan-coil units (FCUs). It is analyzed electricity consumption weight of the equipment of each HVAC system and the total energy consumption. The results of the experiments indicate that the optimal efficiency HVAC system in office buildings includes an AHU and FCUs with an airпїЅwater mist cooled chiller and a cooled water temperature of 8пїЅC. Finally, a TRNSYS simulation model of energy consumption and energy efficiency indices for the AHU&FCUs system is developed and experimentally validated. This study analyzed also the influence of the HVAC system to the thermal comfort through the values of the predicted mean vote (PMV) and predicted percentage of dissatisfied persons (PPD).

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Publication details

Title
EXPERIMENTAL MEASUREMENTS AND TRNSYS SIMULATIONS OF ENERGY CONSUMPTION AND ENERGY EFFICIENCY OF HVAC SYSTEMS IN COOLING MODE IN OFFICE BUILDINGS
Authors
Assis. Prof. Dr. Marius Adam, Assoc. Prof. Dr. Mihai Cinca, Assoc. Prof. Dr. Olga Bancea, PhD. Eng. Cristian Heredea
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Energy and Clean Technologies
Publisher
STEF92 Technology
Year
2017
Pages
667-674
SWS Citekey
Adam201729667674
ISSN
1314-2704
ISBN
978-619-7408-28-7
Language
en
Publication type
Conference Paper
Keywords
energy efficiencycooling systemsHVAC
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