Determination of the amount of thermal energy in the tanks of buildings heating systems

Šateikis, I.

doi:10.1016/s0378-7788(01)00114-1

Cited by 8 publications

(5 citation statements)

References 4 publications

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“…It plays key roles as TES and redistribution. The power source for the water tank could be variable, the most common case is coupled or integrated with conventional gas/electric boilers (e.g., [28]), air-water heat pumps (e.g., [29,30]), or combined heat & power (CHP) (e.g., [31][32][33][34][35]), as being used in a large number of existing buildings all over the world. Renewable energies could also serve as the power source, including solar energy (flat plate, vacuum tube solar collectors, PV panels, or their hybrid) (e.g., [36-40, 41, 208]), geothermal energy (e.g., [2,42]), or fuel cells (e.g., [43,44]).…”

Section: Short-term Sensible Tes Technologies Water Tankmentioning

confidence: 99%

“…By using fiber/plastic composites, expanded polystyrene (EPS) and encasement material, the water tank weight could be one third of that of a compatible storage tank made of steel and is corrosion-free [54]. Generally, they have to be insulated to avoid thermal losses to the ambient, using conventional materials such as glass wool [55], mineral wool, eco cotton-wool [28], polyethylene terephthalate (PET)-fiber fleeces [56], or polystyrene panels [30]. Developing advanced insulation materials having an extra low thermal loss rate (λ = 0.01 W/m.K) and reasonable thickness for water storage tanks, such as silica aerogel based [57] or vacuum insulation panels [58], is one of today's R&D activities focuses.…”

Section: Short-term Sensible Tes Technologies Water Tankmentioning

confidence: 99%

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Energy Storage by Sensible Heat for Buildings

Fan¹

2018

Handbook of Energy Systems in Green Buildings

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This chapter presents a state-of-the-art review on the available thermal energy storage (TES) technologies by sensible heat for building applications. After a brief introduction, the basic principles and the required features for desired sensible heat storage are summarized. Then, material candidates and recent advances on sensible heat or cold storage adapted for building application are discussed, each with its own characteristics, advantages, and limitations. A large section of the chapter is devoted to the sensible TES technologies for buildings, both for short-term (daily) and for long-term (seasonal) storage. Each technology is described in detail including different aspects: basic principle, development status, performance and costs, potential and barriers, today's R&D activity focus, etc. Comparisons on the advantages and limitations between different TES technologies are also made. Finally, conclusions and future directions are summarized.

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Section: Short-term Sensible Tes Technologies Water Tankmentioning

confidence: 99%

Section: Short-term Sensible Tes Technologies Water Tankmentioning

confidence: 99%

Energy Storage by Sensible Heat for Buildings

Fan¹

2018

Handbook of Energy Systems in Green Buildings

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“…In 2013, Booysen et al showed that for a typical hot water consumption of 75 L per day, a savings of 1.4 kWh can be obtained each day just by turning monitoring on [20]. In 2002, Sateikis [21] studied the effects of temperature distribution inside the tank on energetic efficiency. He presented an experiment on vertical boilers with diameter dimensions of 0.3 and 0.9 m and heights of 1.6 and 2 m in function to determine the capacity of thermal energy preserved inside the boilers.…”

Section: Introductionmentioning

confidence: 99%

On the Optimization of Electrical Water Heaters: Modelling Simulations and Experimentation

et al. 2021

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In the context of a world energy crisis, the only solution to control the situation is in the management of energy. One of the most important management keys is the optimization of electrical components. This article presents a complete numerical and experimental study aiming for the optimization of electrical water heaters for household use. The optimization conceives the minimization of energy consumption simultaneously with the minimization of time to heat water. Firstly, a thermal model well adapted for the case of heaters is constructed and validated experimentally and then a parametric study is conducted covering all the input power, the volume and the external area of the heater. Results are promising, showing significant energy savings are possible with an optimum setting of these parameters, thus presenting a firm tool for the optimization of heaters.

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“…The influence of the thermal stratification in the storage tank on the performance of solar heating system has been studied intensively since the 1970s and Jordan and Furbo have compared storage tanks with different cold-water inlet devices for small solar domestic hot water systems [13,14,15]. The objective of the investigation is to reveal the impact of the coldwater inlet device on the thermal stratification in two marketed tanks and to evaluate the possible enhancement in the annual system performance of small solar heating systems.…”

Section: Introductionmentioning

confidence: 99%

Thermal Optimization of Partitioned Electric Water Heaters for Energy Conservation

Kar

Yazıcıoğlu

2020

JENRR

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Optimum design and selection of storage type electric water heaters were analyzed for energy conservation. The thermal performance of a single tank electric water heater is compared with that of partitioned electric water heater for the same average domestic hourly hot water use pattern according to Becker’s profile. Both water heaters have the same volume capacity and total power rating while the temperature of the hot water was kept between 60 and 65oC. It is concluded that a partitioned electric water heater provides more hot water and reduces energy consumption whereas the upper part of the tank has 25% of the total volume and 75% of the total power rating. To evaluate single tank and partitioned electric water heaters transient energy balance equations have been derived and solved. Some assumptions made and thermodynamic properties received to use the evaluate differential equations. To represent water heater models equations required data obtained from literature.

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Determination of the amount of thermal energy in the tanks of buildings heating systems

Cited by 8 publications

References 4 publications

Energy Storage by Sensible Heat for Buildings

Energy Storage by Sensible Heat for Buildings

On the Optimization of Electrical Water Heaters: Modelling Simulations and Experimentation

Thermal Optimization of Partitioned Electric Water Heaters for Energy Conservation

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