Design of a low-temperature solar heating system based on a slurry Phase Change Material (PCS)

Serale, Gianluca; Fabrizio, Enrico; Perino, Marco

doi:10.1016/j.enbuild.2015.06.063

Cited by 43 publications

(12 citation statements)

References 65 publications

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“…All the elements just described have subsequently been isolated and enclosed within a single casing (Figure 3). Similar systems present in the literature involving heat pipes or PCM storages (D'Avignon and Kummert, 2016; Esen and Esen, 2005;Serale et al, 2015) confirmed that a prototype of ICS with the above characteristics had never been realized. The prototype therefore represents a new concept of ICS for DHW production intended to integrate the traditional flat-plate collector with three other main elements: 1) Heat pipes filled with methanol, used as a means of transferring heat from the absorber surface to the storage section.…”

Section: The New Conceptsupporting

confidence: 70%

“…Another solution sometimes implemented in PCM systems is to form special mixtures of phase change material with other liquids, such as water. This leads to the formation of particular slurries, which can be pumped and used in special hydraulic systems, significantly increasing the thermal storage capacity of the final fluid (Serale et al, 2015).…”

Section: State Of the Art On Integral Collector Storagesmentioning

confidence: 99%

“…Compound parabolic concentrating (CPC) type (Souliotis and Tripanagnostopoulos, 2004) (Helal et al, 2011) Pyramid type system with concentrator ICS systems with phase change materials Polymers and composites (Haillot et al, 2011) (Khan, 2016) Slurries (Serale et al, 2015) • reduce maintenance operations through a self-adjusting system devoid of mechanical parts; • have high performance in terms of energy storage, making it suitable for typically cold climates;…”

Section: Aim Of the Workmentioning

confidence: 99%

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Modelling and performance analysis of a new concept of integral collector storage (ICS) with phase change material

et al. 2019

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Solar Domestic Hot Water (SDHW) systems represent a constantly evolving technology in today's applications. With the new directives promoted by the European Union the renewable energy share produced in buildings will tend to increase further. Research on how to increase the efficiency of the thermal production from renewable energy are therefore of the foremost importance. This study aims to investigate the energy performance of an integral collector storage (ICS) prototype for DHW production. This ICS represents a new concept technology, integrating inside the same device a flat plate absorber and a storage section with phase change material (PCM) connected by heat pipes filled with methanol. An objective of this study was to investigate a possible alternative to conventional solar systems, with the aim of reducing investment costs and improving system reliability without compromising energy performance. The energy assessment was carried out using a numerical model in the Engineering Equation Solver (EES) environment, following an electrical analogy scheme. After a validation process by means of experimental data, a yearly simulation was launched in order to estimate the productivity and the solar fraction of the prototype. The results obtained allowed a global energy evaluation and a comparison with similar systems and to identify the pros and cons of this new technology.

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Section: The New Conceptsupporting

confidence: 70%

Section: State Of the Art On Integral Collector Storagesmentioning

confidence: 99%

Section: Aim Of the Workmentioning

confidence: 99%

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Modelling and performance analysis of a new concept of integral collector storage (ICS) with phase change material

et al. 2019

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“…However, the temperature of the working medium at the level of 50-60 • C already causes problems. These are high heat losses from the solar system to the environment, especially in winter, and sufficiently high intensity of solar radiation is required to maintain/increase the temperature of the working medium [10]. The solution to the above-mentioned problems may be adding to the base liquid particles of the phase change material (PCM).…”

Section: Introductionmentioning

confidence: 99%

Experimental Studies of the Influence of Microencapsulated Phase Change Material on Thermal Parameters of a Flat Liquid Solar Collector

2021

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The article presents the results of preliminary research aimed at determining the possibility of using microencapsulated phase change material (mPCM) slurries as a working fluid in installations with a flat liquid solar collector. In the tests, the following were used as the working fluid: water (reference liquid) and 10% wt. and 20% wt. of an aqueous solution of the product under the trade name MICRONAL® 5428 X. As the product contained 43% mPCM, the mass fraction of mPCM in the working liquid was 4.3% and 8.6%, respectively. The research was carried out in laboratory conditions in the range of irradiance I = 250–950 W/m2. Each of the three working fluids flowed through the collector in the amount of 20 kg/h, 40 kg/h, and 80 kg/h. The working fluid was supplied to the collector with a constant temperature Tin = 20 ± 0.5 °C. It was found that the temperature of the working fluid at the collector outlet increases with the increase in the radiation intensity, but the temperature achieved depended on the type of working fluid. The greater the share of mPCM in the working liquid, the lower the temperature of the liquid leaving the solar collector. It was found that the type of working fluid does not influence the achieved thermal power of the collector. The negative influence of mPCM on the operation of the solar collector was not noticed; the positive aspect of using mPCM in the solar installation should be emphasized—the reduced temperature of the medium allows the reduction in heat losses to the environment from the installation, especially in a low-temperature environment.

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“…A recent study, carried out by International Energy Agency [1] , has reported that the worldwide installed heating capacity produced using solar thermal collectors is about 234.6 GWt. The solar thermal market in Italy is constituted by around 400,000 m2 of panels installed each year, and the total installed capacity of thermal solar exceeds 1 GWt [2] . However, because of the weather, geography and other factors, solar energy is intermittent and low-energy-density.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Simulation of Solar Heating System in Summer and Winter

Hui¹,

Xing²,

Wang³

2017

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This paper presents a dynamic model of the solar heating system composed by an inclined solar flat collector coupled to heat storage tank. A Matlab/Simulink based model has been developed to predict the instantaneous solar radiation intensity, the outlet temperature of collector working fluid, the tank temperature and the solar energy utilization of the system. As a case study, this paper analyzed the simulation of Beijing area in winter and summer, the results show that 50~60 degree of inclination of collector can receive more energy and that the performance of the heat collector is stable which efficiency is basically stable at 0.65. The results demonstrate that the maximum outlet temperature of the collector was 35.4°C in winter and 71.1°C in summer. Through the daytime heat storage, the temperature of the heat storage tank can reach 55°C in summer, which is 24°C higher than that in winter. The simulation results can predict the operation of the solar system and provide the research foundation for the dynamic simulation of the solar energy as an auxiliary energy system.

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Design of a low-temperature solar heating system based on a slurry Phase Change Material (PCS)

Cited by 43 publications

References 65 publications

Modelling and performance analysis of a new concept of integral collector storage (ICS) with phase change material

Modelling and performance analysis of a new concept of integral collector storage (ICS) with phase change material

Experimental Studies of the Influence of Microencapsulated Phase Change Material on Thermal Parameters of a Flat Liquid Solar Collector

Dynamic Simulation of Solar Heating System in Summer and Winter

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