Numerical study of solar absorption heat storage system applied to Bucharest city
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Numerical study of solar absorption heat storage system applied to Bucharest city
1. University Kasdi Merbah of Ouargla, Faculty of Applied Sciences, Department of Mechanical Engineering, Ouargla, Algeria 2. Doctoral School, Technical University of Civil Engineering of Bucharest, Bucharest, Romania
Abstract
Keywords
Buildings represent a large part in terms of fossil energy consumption, which depends on the
numerical model,
great need for heating. Even if the solar absorption heat storage system is possible, the performance
absorption,
of this system is affected by the cycle limits and the climatic conditions. The goal of the present
heat storage,
study is to control the thermal performance of the system cycle according to the imposed climatic
cycle temperatures,
conditions of Bucharest city, Romania, and therefore a numerical model was developed for this purpose. The scheme and the thermodynamic cycle, the energy and mass balance equations, and the computational algorithm were presented. The results show that the cycle temperature increases at the end of desorption when the heating power supplied to the desorber is increased, which is also proportional to the drop in temperature at the beginning of the desorption. The temperature
Research Article
Noureddine Cherrad1,2 (), Adrian-Gabriel Ghiaus2
climatic conditions
Article History Received: 12 February 2020 Revised: 27 May 2020 Accepted: 02 June 2020
at the end of absorption and the mass flow rates of the solution have a significant effect on the thermal power released from the absorber and used to heat the building. For an average daily heat
© Tsinghua University Press and
power of 1.35 kW/m2 and 10 hours per day of heating the building, the system with a solar collector
Springer-Verlag GmbH Germany,
area of 3 m2 has the capacity of heat supply for all the cold period. However, an economic strategy
part of Springer Nature 2020
remains necessary.
1
Introduction
E-mail: [email protected]
Building Systems and Components
Since the 21st century, problems such as global warming and energy depletion have become important issues for scientists and architects (Chiu et al. 2018). A significant part of global carbon emissions is due to the high consumption of fossil fuels for buildings (Lizana et al. 2018), which are responsible for 40% of global energy use and contribute towards 30% of the total CO2 emissions (Ahmad et al. 2016). Buildings consume more than one-third of the world’s primary energy (Hong et al. 2018) and play an important role as energy consumers from fossil fuels with considerable impact on the outdoor environment (Papadopoulos and Kontokosta 2019). The drive to reduce energy use and associated greenhouse gas emissions from buildings has acted as a catalyst in the development of advanced computational methods for energyefficient design, management, and control of buildings and systems. Heating, ventilation and air-conditioning systems
are the major sources of energy consumption in buildings and ideal candidates for substantia
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