Integrated collector storage solar water heaters

Smyth, Mervyn; Eames, Philip C.; Norton, Brian

doi:10.1016/j.rser.2004.11.001

Cited by 102 publications

(50 citation statements)

References 62 publications

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“…Overall these values are fairly low given that most water heaters are reported to supply 30 to 80 percent of daily demand [11]. As noted in the one-way sensitivity analysis presented above and in previous literature [3], available surface area is a key performance variable. Because all material for this ICSSWH system has to be easily obtained locally, the tank cannot be custom designed to achieve as high a ratio between the water storage tank and the net glazing area as the literature recommends.…”

Section: Design Of a Site-built Integrated Collector Storage Solar Watermentioning

confidence: 99%

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Design of a Site-Built Integrated Collector Storage Solar Water Heater Under Uncertainty

Commerford¹,

Gurian²,

Wen³

2008

TOREJ

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A straightforward framework for identifying key design parameters and determining their values for a site-built integrated collector storage solar water heater (ICSSWH) under uncertainty is developed. The framework is then used to evaluate the design for a ICSSWH, which uses locally available materials and can be assembled by builders without specialized training in solar system construction. In the framework, first the most important design parameters are identified by a sensitivity analysis using TRNSED software to predict system performance. Then a decision tree is constructed that identifies discrete outcomes of various combinations of design parameters, uncertainty quantities, and resulting system performance as predicted by the TRNSED model. For the ICSSWH that is evaluated in this project, three key design parameters are identified: storage tank size, top surface area, and household daily hot water cosumption. Three different system sizes are evaluated in this manner, a 114-liter, 227-liter, and 341-liter system. Only the 341-liter system has a favorable economic return compared to a conventional, gas heater. All systems present some risk of performing worse than a conventional system. Further research is warranted into higher surface area designs to improve the performance of the system. The expected return of the system selected by this analysis is modestly higher than the return of the option which would be selected without any consideratoin of uncertainty. This indicates that straightforward frameworks, such as this, for considering uncertainty in the design of residential solar water heaters, may offer benefits to builders and home buyers.

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Section: Design Of a Site-built Integrated Collector Storage Solar Watermentioning

confidence: 99%

“…Smyth et al [3] reviewed the literature which discusses ICSSWH design. From the review, it is observed that existing studies mostly focus on optimizing packaged ICSSWHs.…”

Section: Introductionmentioning

confidence: 99%

Design of a Site-Built Integrated Collector Storage Solar Water Heater Under Uncertainty

Commerford¹,

Gurian²,

Wen³

2008

TOREJ

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“…Among the various applications of this renewable energy, solar water heater are most widespread because their simplicity and the high requirements out of domestic hot water. Usually, a solar water heater is composed of two major parts: the solar water collector (the panel) and the heat storage realized by a cumulus filled with water [1][2][3]. The transfer of heat between the two parts is done either by thermosiphon, or by forced water circulation.…”

Section: Introductionmentioning

confidence: 99%

Comparison Between the Concrete, Sand, Clay, Water and the Paraffin like Materials of Heat Storage for the Solar Water Heaters

Slama¹,

Moumen²,

Elgoul³

2017

IJECEC

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Solar energy, though renewable, still has a handicap of heat storage, particularly for the solar water heaters with integrated storage. Indeed, these latter present a significant night cooling. The storage material nature can influence the lifespan of the storage tanks, the quantity of stored heat and its speed of restitution. We compare here five materials for the heat storage which are sand, concrete, clay, Phase Change Material (PCM) and water like element of reference for comparisons. As for the PCM used here, it is paraffin sold in the trade, though other materials admit an enthalpy of higher fusion. If during the diurnal heating, the PCM does not reach the highest temperatures, it is because received solar energy is used for its change of state.However, from a viewpoint amount of stored heat, PCM is the best view of its high latent heat. Also for well as night cooling, the PCM keeps the temperature elevated.

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“…Research involving clean sources of energy such as solar energy, has increased significantly over the last four decades, particularly after the World Oil Crisis in 1973 [3]. Solar energy can be used in the industrial, commercial and domestic sectors.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the heat exchanger in a flat plate indirect heating integrated collector storage solar water heating system

AL-Khaffajy

Mossad

2013

Renewable Energy

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Due to the environmental impact of energy usage, consumers need to be encouraged to use renewable energy sources such as solar energy. The indirect heating flat plate integrated collector storage solar water heating system is one of the compact systems for domestic water heating. It incorporates the collection of a solar energy component and a hot water storage component in one unit. The objectives of this study were to investigate the effect of different parameters on the thermal performance of this system with the aim of reducing both the initial and the running costs. The outlet service water temperature was used as a measure of performance, because it is an indicator of the energy acquired from the solar radiation. The continuity, momentum and energy equations of the fluids involved in the system were numerically solved in a steady state condition, using FLUENT software. Three-D CFD models were developed and validated using previous experimental results. A standard k-ω turbulent model was used in the optimization of the heat exchanger because it produced good agreement with the experimental results. The surface-to-surface radiation model was included. The effect of single and double row heat exchangers with different lengths was investigated. Circular and elliptic cross-section pipes were also examined. Mass flow rates of 500 and 650 L/h were chosen. The effect of the angel of collector was also examined. The results showed that the single row HX of 10.8 m length for both the elliptical and type B tube gave high service water outlet temperature (acceptable for heat exchanger design) and with low pumping power. This resulted in an increase in the thermal efficiency and a significant reduction in both the initial and the operating costs of the system.

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Integrated collector storage solar water heaters

Cited by 102 publications

References 62 publications

Design of a Site-Built Integrated Collector Storage Solar Water Heater Under Uncertainty

Design of a Site-Built Integrated Collector Storage Solar Water Heater Under Uncertainty

Comparison Between the Concrete, Sand, Clay, Water and the Paraffin like Materials of Heat Storage for the Solar Water Heaters

Optimization of the heat exchanger in a flat plate indirect heating integrated collector storage solar water heating system

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