Determination of Thermal Energy Storage (TES) characteristics by Fourier analysis of heat load profiles

Pinnau, Sebastian; Breitkopf, Cornelia

doi:10.1016/j.enconman.2015.05.055

Cited by 13 publications

(6 citation statements)

References 24 publications

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“…The heat loss to the ambient environment is neglected as is a common assumption in theoretical studies Pinnau and Breitkopf, 2015;Daugenet-Frick et al, 2015). The study focuses on heat transfer between the HTF and the PCM and not on the overall thermal performance of an actual LHTES unit, so it has been justifiable to assume an adiabatic shell of the unit.…”

Section: Resultsmentioning

confidence: 99%

A PCM-water heat exchanger with polymeric hollow fibres for latent heat thermal energy storage: a parametric study of discharging stage

Hejčík¹,

Charvát²,

Klimeš³

et al. 2016

jtam

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The paper presents a theoretical parametric study into latent heat thermal energy storage (LHTES) employing polymeric hollow fibres embedded in a phase change material (PCM). The polymeric hollow fibres of five inner diameters between 0.5 mm and 1.5 mm are considered in the study. The effectiveness-NTU method is employed to calculate the thermal performance of a theoretical LHTES unit of the shell-and-tube design. The results indicate that the hollow fibres embedded in a PCM can mitigate the drawback of low thermal conductivity of phase change materials. For the same packing fraction, the total heat transfer rates between the heat transfer fluid and the PCM increase with the decreasing diameter of the hollow fibres. This increase in the heat transfer rate and thus the efficiency of the heat exchange to some extent compensate for the energy consumption of the pump that also increases with the decreasing fibre diameter.

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Section: Resultsmentioning

confidence: 99%

A PCM-water heat exchanger with polymeric hollow fibres for latent heat thermal energy storage: a parametric study of discharging stage

Hejčík¹,

Charvát²,

Klimeš³

et al. 2016

jtam

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“…In the case of a constant, predictable source, the TES tank is usually dimensioned from the basis of load data, see, e.g., [7,12,13]. In the present case, with varying availability of heat, the peak reduction potential of a tank with certain size was calculated using hourly average data for heat flow rates for peak heating and heat dumping using an iterative approach, inspired by [14].…”

Section: Calculating the Reduction In Peak Heating As A Function Of Tmentioning

confidence: 99%

Potential of Thermal Energy Storage for a District Heating System Utilizing Industrial Waste Heat

et al. 2020

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The potential for utilizing industrial waste heat for district heating is enormous. There is, however, often a temporal mismatch between the waste heat availability and the heating demand, and typically fossil-based peak boilers are used to cover the remaining heat demand. This study investigates the potential of applying a thermal energy storage tank at the district heating supply system at Mo Industrial Park in Norway, where waste heat from the off-gas of a ferrosilicon production plant is the main heating source. To cover peak heating demands, boilers based on CO gas, electricity, and oil are applied. The reduction in peak heating costs and emissions is evaluated as a function of tank size for two different scenarios: (1) a scenario where CO gas, which is a byproduct from another nearby industry, is the main peak heating source; and (2) a scenario where no CO gas is available, and electricity is the main peak heating source. The highest economic viability is obtained with the smallest storage tank with a volume of 1000 m3, yielding a payback period of 7.1/16.2 years and a reduction in total heat production costs of 14.6/10.0% for Scenarios 1/2, respectively. The reduction in CO2 emissions is 19.4/14.8%, equal to 820/32 ton CO2 for the analyzed period. Sensitivity analysis shows a significant reduction in payback period for Scenario 2 with increasing electricity prices, while the payback period in Scenario 1 is most sensitive to the emission factors.

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“…[20]), wind [34], and waste heat recovery processes [35]; and load profiles from space heating and domestic hot water consumption [22], and observing negligible differences in results beyond =5. This theory is also supported by Pinnau and Breitkopf [6] who limited their study to four dominant frequencies.…”

Section: Development Of a Generalized Regression Modelmentioning

confidence: 54%

“…analytical methods) makes use of models or algorithms to directly determine the optimal storage tank volume and can vary widely with regards to level of complexity. Pinnau and Breitkopf [6] used an analytical method to size multiple hot water storage tanks for an apartment building located in Potsdam, Germany. Their method involves decomposing the hot water heating residual profile (i.e.…”

Section: Literature Reviewmentioning

confidence: 99%

“…The regression model is developed using a simplified approach that is based on the properties of a residual heating profile comprising a single sinusoid. As the positive halfperiods of this sinusoid correspond to time periods during which the hot water storage tank is charged, and the negative half-periods correspond to time periods during which it is discharged, it follows that integrating either half-period with respect to time would yield the amount of heat, , charged and discharged during each period, respectively [6]. For a sinusoid with period , frequency , and amplitude , the quantity of heat charged/discharged over any given half-period can be expressed as…”

Section: Development Of a Generalized Regression Modelmentioning

confidence: 99%

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Development of a Simplified Method for Optimally Sizing Hot Water Storage Tanks Subject to Short-Term Intermittent Charge/Discharge Cycles

Stalinski¹

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Determination of Thermal Energy Storage (TES) characteristics by Fourier analysis of heat load profiles

Cited by 13 publications

References 24 publications

A PCM-water heat exchanger with polymeric hollow fibres for latent heat thermal energy storage: a parametric study of discharging stage

A PCM-water heat exchanger with polymeric hollow fibres for latent heat thermal energy storage: a parametric study of discharging stage

Potential of Thermal Energy Storage for a District Heating System Utilizing Industrial Waste Heat

Development of a Simplified Method for Optimally Sizing Hot Water Storage Tanks Subject to Short-Term Intermittent Charge/Discharge Cycles

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