Solar driven water heating systems for medium-rise residential buildings in urban mediterranean areas

Panagiotidou, Maria; Aye, Lu; Rismanchi, Behzad

doi:10.1016/j.renene.2019.09.020

Cited by 40 publications

(18 citation statements)

References 22 publications

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“…Currently, extensive work is underway to improve existing models of solar collectors and address this issue is extremely relevant to the universe. Most designs contain a frame housing an absorber with channels for circulation of the coolant, absorber of solar energy, transparent insulation located above the absorber, channels of input and output of working fluid and thermal insulation [3][4][5][6][7]. More productive is a solar collector containing a sealed housing, the upper part of which is made of a transparent material, and the inner surface facing the Sun has a dark coating that absorbs solar radiation, tubes with channels for the passage of coolant having an inlet and outlet on the surface of the solar collector [8].…”

Section: Literature Reviewmentioning

confidence: 99%

Heliosystem of Auxiliary Heat Supply for a Mining Enterprise

Shkrylova

Kostenko

Skrynetska

2020

JES

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In the conditions of the global ecological crisis in the world and Ukraine, the issue of finding alternative energy sources becomes relevant. One of the most common types of renewable energy is solar energy. In Ukraine today, the most promising direction of using solar energy is its direct transformation into low-potential thermal energy. To get electric power, solar radiation is the mere alternative to electric power generated from mined fuel, and without the pollution of air and water, or adverse consequences manifested in global warming. The disadvantage of this type of installation is the limitation of the duration of light time, as well as the effect of cloudiness. During the day, the number of solar radiation changes, to stabilize it is necessary to accumulate and accumulate it for further use, the technical implementation of stable operation of solar installation due to the use of terrestrial radiation and the accumulator of a specific part of solar energy is proposed. The purpose of the work is experimental studies to ensure the stable operation of the solar collector under cloudy conditions. The paper is aimed at the stabilization of the operation of the solar installation and to obtain additional heat after the Sun’s cloud cover. The use of a solar thermal collector is advisable in solar heating and hot water systems in conditions of alternating solar radiation. The results of physical modeling have proved the efficiency of the method of combining types of thermal radiation, due to the accumulation of energy it is possible to increase the quantitative index of solar energy in the conditions of cloudiness by 3 times Keywords: alternative energy, solar energy, solar collector, thermal energy, clouds, terrestrial radiation, ecology.

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Section: Literature Reviewmentioning

confidence: 99%

Heliosystem of Auxiliary Heat Supply for a Mining Enterprise

Shkrylova

Kostenko

Skrynetska

2020

JES

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“…In particular, type 938 [39] was used for performing the air-to-water heat pump cycle obtaining the heat delivered to the water sink (Q-to-water) at a given time step (15 min). Q-to-water was used as input in type 1237 [40] to evaluate the water tank temperature at the specific tapping condition. The water temperature was used as input in type 938 with the tank as the heat sink of the HP.…”

Section: Simulation Modelsmentioning

confidence: 99%

Solar and Heat Pump Systems for Domestic Hot Water Production on a Small Island: The Case Study of Lampedusa

et al. 2020

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The achievement of United Nations Sustainable Development Goals, related to energy and resource use, is a critical issue for small and insulated communities. In many minor islands, solar energy is not correctly exploited, and electrical heaters are connected to weak grids with very a high share of generation by fossil fuels. As a consequence, there is the necessity to assess the potential and the suitability of diffusion of alternative systems to avoid dependency on the electrical grid and reduce carbon emissions. This paper aims to evaluate the technical and economic performances of some alternative systems exploiting renewable energy for domestic hot water production. Four different systems were simulated and studied: a heat pump connected to the grid, a heat pump coupled with a photovoltaic plant, a heat pump combined with a solar thermal collector, and a solar thermal plant. Moreover, heat and electricity storages were studied for reducing impacts on the distribution network. The work presents data gathered for a study on energy-retrofit strategies on Lampedusa Island (Italy, 35°30′56″ north (N), 568 degree-days). Finally, to select the most cost-effective plant, an economic analysis of the chosen systems was carried out. This analysis shows that the best net present values are associated with the heat pump (HP) coupled with a stand-alone PV system and a small battery and solar thermal-assisted HP. The shortest payback time was calculated for the solar thermal system.

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“…The research proposed by Panagiotidou et al [2], Wang et al [8], and Aguilar et al [9,10] agree that the main renewable solar technologies currently applied in the production of DHW are solar thermal (ST), photovoltaic (PV), photovoltaic/thermal (PV/T), and solar-energyassisted heat pumps (SAHPs). This is due to the swift growth in demand for thermal energy for buildings over the last few decades.…”

Section: Introductionmentioning

confidence: 98%

“…The European Parliament [1] sets goals for nations for the implementation of these energies that include the binding objective of reducing the Union's emissions by at least 40% by 2030, in line with objective number 7 of the United Nations' 2030 Agenda of providing access to affordable, safe, sustainable, and modern energy. Within the EU's strategy, some authors such as Panagiotidou et al [2] have indicated that buildings are responsible for 38% of total EU energy consumption, and their energy demand management brings an opportunity to reach the desired objectives by 2030.…”

Section: Introductionmentioning

confidence: 99%

A Cost-Effective and Efficient Electronic Design for Photovoltaic Systems for Solar Hot Water Production

et al. 2021

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A significant percentage of energy consumption in buildings is to produce hot water. Photovoltaic solar heating can be considered a clean and renewable energy option—easy to install, silent, and without maintenance—to replace the consumption of fossil fuels used in this process. This paper presents a study that simulates the heating process using thermal electrical resistors powered by photovoltaic solar energy. For this purpose, a solar hot water installation has been set up. This installation consists of a water tank with an electric resistance connected to photovoltaic modules by means of a low-cost experimental electronic conversion system. This electronic system has been developed to avoid the need for inverters or batteries, typical of traditional photovoltaic solar installations. It is an isolated system since it is not connected to the power grid. The photovoltaic solar modules, the tank, and its heating resistance correspond to commercial models. This electronic system has a 95.06% yield, and it operates across the whole irradiance’s daily curve, having verified its operation over several months. Even though this is an experimental electronic device, it is financially viable as the cost of its components is below EUR 60 per kW peak capacity. The results obtained in a proper functioning system are promising, demonstrating the technical feasibility and economic advantages of using this type of isolated photovoltaic system to power heating processes.

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Solar driven water heating systems for medium-rise residential buildings in urban mediterranean areas

Cited by 40 publications

References 22 publications

Heliosystem of Auxiliary Heat Supply for a Mining Enterprise

Heliosystem of Auxiliary Heat Supply for a Mining Enterprise

Solar and Heat Pump Systems for Domestic Hot Water Production on a Small Island: The Case Study of Lampedusa

A Cost-Effective and Efficient Electronic Design for Photovoltaic Systems for Solar Hot Water Production

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