Optimal rule-based control for the management of thermal energy storage in a Canadian solar district heating system

Saloux, Étienne; Candanedo, José A.

doi:10.1016/j.solener.2020.07.046

Cited by 30 publications

(8 citation statements)

References 35 publications

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“…In a cradle to grave lifecycle analysis, it was found that Canadian homes that utilize solar thermal have 70% lower emissions than conventional homes [13]. However, the authors of [12] highlight that the large mismatch between solar thermal supply and demand is an ongoing issue that can be reduced by the inclusion of both thermal energy storage and an effective control strategy.…”

Section: Literature Reviewmentioning

confidence: 99%

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Techno-Economic Design of a Combined Heat and Power Microgrid for a Remote Community in Newfoundland Canada

Elsaraf

Jamil

Pandey³

2021

IEEE Access

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Around 300 remote communities in Canada rely on diesel for their energy needs, a situation associated with high costs, high emissions, and accessibility problems. Various studies have addressed this problem by proposing renewable energy microgrids, which have a lot of potential due to the abundance and availability of renewable sources. However, there is a lack of studies regarding remote communities in Newfoundland and combined heat and power microgrids. This study chose Cartwright remote community based on consumption and available resources. Both distributed and centralized microgrid components were designed using MS Excel, Polysun, HOMER, and BEOPT. The final system included solar thermal, PV, wind energy, hydroelectric energy and fuel cells for energy generation, and hydrogen as an energy carrier for storage. The solar thermal distributed system reduced the thermal load by 35%. The microgrid reduced diesel consumption by 71% and CO 2 emissions by 9000 tons. Renewable sources provided 100% of the electric load and 63.5% of the thermal load. The microgrid achieved a Levelized cost of -0.0245 $/kWh, which is only possible for combined heat and power systems.INDEX TERMS Remote communities, microgrids, HOMER, renewable energy generation, energy storage.

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Section: Literature Reviewmentioning

confidence: 99%

“…Based on multiple cost factors HOMER then calculates the generator's fixed and marginal cost of energy using equations (12) and (13). Where the fixed cost is the per hour cost of running the generator without generation while the marginal cost is the additional cost incurred per kWh of electricity produced Where:…”

Section: ) Fuel Cellmentioning

confidence: 99%

Techno-Economic Design of a Combined Heat and Power Microgrid for a Remote Community in Newfoundland Canada

Elsaraf

Jamil

Pandey³

2021

IEEE Access

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“…This is particularly beneficial for short-term TES units, which are subjected to daily charging and discharging cycles, and whose control management considers changes in weather conditions [39]. In addition, the approach here followed may enable to optimise the operation of the TES system [40,41] and the automated control management of a DHCS by implementing model predictive control [42]however, this falls out of the scope of this study.…”

Section: On the Uses And Benefits Of Temperature And Soc Estimators F...mentioning

confidence: 99%

Design and verification of an effective state‐of‐charge estimator for thermal energy storage

et al. 2021

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Thermal energy storage (TES) is widely used in district heating and cooling systems (DHCS) to act as a buffer between the supply and demand schedules. The adequate control of charging and discharging modes of TES may improve the overall performance of a DHCS and, to this end, an effective regulation of its state-of-charge (SoC) is required. However, the calculation of SoC depends on the availability and accuracy of temperature measurements. A model-based observer for the calculation of the SoC of water-based TES tanks is presented. A dynamic model of a one-dimensional stratified water tank is adopted to develop the observer. Its effectiveness is assessed through 'model-in-the-loop' cosimulations, with the observer and the feedback control system being implemented in MATLAB/Simulink and a high-fidelity water tank component available in Apros being used as the plant model. Simulation results considering three different system configurations demonstrate that the model-based observer accurately estimates the temperature distribution within the tank, leading to an effective SoC computation and control-even in the case of sensor failure or upon limited sensor availability. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…One of the major applications of TES is solar heating systems, as solar energy can't be used all the time due to its discontinuous nature, TES in this system helps smoothen the discrepancy between the availability and need of thermal energy (Saloux and Candanedo 2020). TES based on the utilization of latent heat often perform better when compared to sensible systems since they have higher energy storage densities.…”

Section: Introductionmentioning

confidence: 99%

Investigation of morphological characteristics of concentric tube thermals energy storage.

Rabbi

Asif²,

Jafry³

et al. 2022

JER is an international, peer-reviewed journal that publishes f

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This study focuses on the heat transfer intensification of concentric tube type thermal energy storage (TES). The collective influence of aspect ratio (ratio of length to diameter of the tube) and number of fins is investigated. To optimize thermal energy storage, first an optimal aspect ratio investigated. And then, optimal number of fins is obtained. Results are compared based on the amount of liquid fraction available after 120 minutes of charging and discharging. It was found that with an increasing aspect ratio, liquid fraction also increased, but up to the aspect ratio of 11. Afterwards, an increased aspect ratio showed insignificant change in the liquid fraction. Similarly, liquid fraction in case of charging was increased with increasing the number of fins up to 8. Afterward, an increased number of fins showed insignificant change in the liquid fraction.

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Optimal rule-based control for the management of thermal energy storage in a Canadian solar district heating system

Cited by 30 publications

References 35 publications

Techno-Economic Design of a Combined Heat and Power Microgrid for a Remote Community in Newfoundland Canada

Techno-Economic Design of a Combined Heat and Power Microgrid for a Remote Community in Newfoundland Canada

Design and verification of an effective state‐of‐charge estimator for thermal energy storage

Investigation of morphological characteristics of concentric tube thermals energy storage.

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