Integrated collector storage solar water heaters: survey and recent developments

Souliotis, Manolis; Singh, Ram Karan; Papaefthimiou, Spiros; Lazarus, Ian Joseph; Andriosopoulos, Kostas

doi:10.1007/s12667-014-0139-z

Cited by 21 publications

(23 citation statements)

References 118 publications

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“…The design varies according to the operational constrains, as the immediate response of the water temperature increases during daily operation and the effective storage of the thermal energy during night time operation, etc. In the existing literature, 1,2,26 there are not many suggestions for multistorage ICS solar water heaters, and only few of them can be considered practical enough. 5,6,22,[27][28][29] Furthermore, in selected works, 6,22,27 the incorporation of curved reflector troughs on the multivessel ICS solar water heaters has been suggested.…”

Section: Design Description and Geometric Analysismentioning

confidence: 99%

“…A class of simple in construction and cost‐effective devices for solar water heating is the integrated collector storage (ICS) solar water heaters in which the solar collectors and the water storage tanks are combined in a single unit. The development and the operational details of the aforementioned systems have been described by Singh et al and Souliotis et al These studies revealed that the main disadvantage is related to the heat losses which take place during nighttime. However, due to the great potential offered by these devices, an intense research interest has been devoted towards improving their thermal behavior .…”

Section: Introductionmentioning

confidence: 99%

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Optical study of twin-tanked ICS solar heaters combined with asymmetrical CPC-type reflectors

et al. 2018

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Summary The distribution of solar irradiance on the absorbing surface of a typical integrated collector storage (ICS) system combined with reflector troughs is commonly studied by means of ray tracing techniques. A conceptually different alternative is offered by the method of the average number of reflections (ANR). In the present work, the latter is employed for the systematic optical study of realistic ICS models. In all cases, the solar devices consist of twin cylindrical storage tanks which are mounted on top of stationary asymmetrical CPC‐type reflectors. The emphasis of the current research is mainly placed on the evaluation of the ANR reliability for the calculation of the optical efficiency of the related twin‐tanked devices. Additionally, useful operational parameters, such as the optical performance of the proposed geometries, are also determined. The behavior of the tested ICS systems reveals that the optical efficiency may vary in the range of 0.75 to 0.91, exhibiting a strong dependence on the geometric parameters of the solar devices. The highest efficiency is achieved by the systems which combine large reflecting area and storage tanks in close proximity.

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Section: Design Description and Geometric Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optical study of twin-tanked ICS solar heaters combined with asymmetrical CPC-type reflectors

et al. 2018

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“…The results show that the thermal loss coefficient per aperture area (in W/(Km 2 )) varies between 3.7 and 3.9 for ISSC system, 5 and 5.36 for STS-1 and 5.4 and 5.69 for STS-2.Varghese et al 9 conducted a parametric study of a new concentrating integral solar storage water heater. In their review paper, Souliotis et al 11 presented different concentrating and nonconcentrating Integrated Collector Storage systems. Their system used an air gap at the arms of the CPC.…”

Section: Introductionmentioning

confidence: 99%

“…Experimental tests were accomplished by the authors, in order to study the thermal efficiencies and the thermal heat loss coefficients of the new collector. In their review paper, Souliotis et al 11 presented different concentrating and nonconcentrating Integrated Collector Storage systems. They also compared between different ICS geometries and strategies used to reduce heat losses.…”

Section: Introductionmentioning

confidence: 99%

Thermal performance study of a vacuum integrated solar storage collector (ISSC) with compound parabolic concentrator (CPC)

et al. 2019

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This paper deals with the energy performance of a new integrated solar storage collector (ISSC) with compound parabolic concentrator (CPC) conceived in the Thermal Process Laboratory in CRTEn Borj Cedria (North of Tunisia). The novelty in this system is the use of transparent vacuum insulation in the annulus between double half-Cylindrical Plexiglass, and the use of automated nocturnal insulation system, which suppresses heat loss during night. Also, the system is equipped with a mobile support permitting to have many collector orientations toward south, east-south, and west-south in order to maximize the incident solar flux. The experimental study of the ISSC system showed that the thermal loss coefficient of ISSC system is equal to 6.16 W/K

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“…[2]. Among these technologies, solar energy capture and wind energy capture technologies have been studied for decades, and great developments have been achieved [3,4], however, these two important energy harvesting methods require certain conditions (i.e., sunlight or wind must exist), besides, the volume of devices used by these two energy harvesting methods are relatively large in size, causing inconvenience in some application areas, such as mine data acquisition and other dark sealed places. Electromagnetic energy is spread almost everywhere around the world, but its energy density is rather low and unstable [5,6].…”

Section: Introductionmentioning

confidence: 99%

A Study on the Power Generation Capacity of Piezoelectric Energy Harvesters with Different Fixation Modes and Adjustment Methods

Zhou

Zhu

et al. 2016

Energies

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Abstract:The power generation capacity of piezoelectric energy harvesters (PEHs) is not only related to the properties of the piezoelectric material, the vibration magnitude and the subsequent conditioning circuit, but also to the fixation modes and adjustment methods. In this paper, a commercial piezoelectric ceramic plate (PCP) in simply supported beam fixation mode and cantilever beam fixation mode were analyzed through finite element simulations and experiments, and furthermore, two ways of adjusting the natural frequency of PCP are studied and compared. As a result, some guidelines are proposed for the application of PCPs according to the simulation and experimental results which showed that: (1) the simply supported beam fixation mode is suitable for environments in which the exciting frequency exceeds 50 Hz, while the cantilever beam fixation mode fits the circumstance where the exciting frequency is below 50 Hz; (2) the maximum generation power a PCP produces in simply supported beam fixation mode is larger than that in cantilever beam fixation mode; (3) adjusting the weight of the mass block affixed on the PCP can change the natural frequency of PCP more efficiently than length-width ratio does.

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Integrated collector storage solar water heaters: survey and recent developments

Cited by 21 publications

References 118 publications

Optical study of twin-tanked ICS solar heaters combined with asymmetrical CPC-type reflectors

Optical study of twin-tanked ICS solar heaters combined with asymmetrical CPC-type reflectors

Thermal performance study of a vacuum integrated solar storage collector (ISSC) with compound parabolic concentrator (CPC)

A Study on the Power Generation Capacity of Piezoelectric Energy Harvesters with Different Fixation Modes and Adjustment Methods

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