E3S Web Conf.
Volume 32, 2018EENVIRO 2017 Workshop - Advances in Heat and Transfer in Built Environment
|Number of page(s)||8|
|Published online||21 February 2018|
Potential of HVAC and solar technologies for hospital retrofit to reduce heating energy consumption
Technical University of Cluj-Napoca, Dept. of Mechanical Engineering, Bd. Muncii 103-105, 400641, Cluj-Napoca, Romania
2 Technical University of Cluj-Napoca, Dept. of Building Services, Bd. 21 Decembrie 1989 128-130, 400604, Cluj-Napoca, Romania
3 Arhi Details, Str. A. Iancu 37/A, 401163, Turda, Romania
* Corresponding author: firstname.lastname@example.org
The study presents a combination of several energy efficient technologies together with their potential to reduce the energy consumption and to increase the comfort through the retrofit of a hospital building. The existing situation is characterized by an old and inefficient heating system, by the complete missing of any ventilation and by no cooling. The retrofit proposal includes thermal insulation and a distributed HVAC system consisting of several units that includes air to air heat exchangers and air to air heat pumps. A condensing boiler was also considered for heating. A solar thermal system for preparing domestic hot water and a solar photovoltaic system to assist the HVAC units are also proposed. Heat transfer principles are used for modelling the thermal response of the building to the environmental parameters and thermodynamic principles are used for modelling the behaviour of HVAC, solar thermal system and photovoltaic system. All the components of the heating loads were determined for one year period. The study reveals the capacity of the proposed systems to provide ventilation and thermal comfort with a global reduction of energy consumption of 71.6 %.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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