Method for Calculating Heat Transfer in a Heat Accumulator Using a Phase Change Material with Intensification Due to Longitudinal Fins DOI Creative Commons

В. И. Лебедев,

Andrey Deev,

Konstantin Deev

и другие.

Energies, Год журнала: 2024, Номер 17(21), С. 5281 - 5281

Опубликована: Окт. 24, 2024

One of the challenges in energy supply for isolated power systems is maintaining a steady balance between generated and consumed energy. The application storage flexible sources most preferable approach these systems. Small- medium-sized nuclear plants are promising, carbon-free options to However, have low maneuverability. To solve this problem, article discusses use thermal accumulator using phase change material (solar salt) heat feedwater. Tubes with longitudinal fins used intensify transfer system. This paper presents method calculating along entire exchange surface such an accumulator. A series 2D simulations were conducted study solidification process solar salt around tube at various temperatures on inner wall surface. regression dependences temperature thickness solid PCM layer determined. Using presented obtained dependencies, we determined time graphs fluid outlet during discharge. Based results presented, it was found that 72.7 tons (dimensions: 6 × 3.71 2.15 m) can replace high-pressure heater №1 low-power plant (50 MW) 3450 s.

Язык: Английский

Development of a Quantitative Assessment Algorithm for Operational Risks in Mining Engineering DOI Creative Commons
Marina Nevskaya, Anna Shabalova, Liubov Nikolaichuk

и другие.

Resources, Год журнала: 2025, Номер 14(4), С. 53 - 53

Опубликована: Март 25, 2025

Whenever any type of ore deposit is developed, it comes with significant risks, such as uncertain reserves, harsh climate conditions, and other uncontrollable factors. To manage these risks effectively, companies need to quickly adapt changing conditions. This paper presents a method for evaluating using simulation model. The main objective identify factors operational risk determine the project parameters that have greatest impact on probability event. includes classification based way they arise; creation decomposition matrix dividing by production tasks; construction mathematical model identified was tested developing an underground mine conveyor network in Anylogic (8.9.2) software. A experiment showed shutdowns could result 11.23% reduction annual revenue. Based results, recommendations were made how can be reduced implement transport system increase resilience.

Язык: Английский

Процитировано

0
Method for Calculating Heat Transfer in a Heat Accumulator Using a Phase Change Material with Intensification Due to Longitudinal Fins DOI Creative Commons

В. И. Лебедев,

Andrey Deev,

Konstantin Deev

и другие.

Energies, Год журнала: 2024, Номер 17(21), С. 5281 - 5281

Опубликована: Окт. 24, 2024

One of the challenges in energy supply for isolated power systems is maintaining a steady balance between generated and consumed energy. The application storage flexible sources most preferable approach these systems. Small- medium-sized nuclear plants are promising, carbon-free options to However, have low maneuverability. To solve this problem, article discusses use thermal accumulator using phase change material (solar salt) heat feedwater. Tubes with longitudinal fins used intensify transfer system. This paper presents method calculating along entire exchange surface such an accumulator. A series 2D simulations were conducted study solidification process solar salt around tube at various temperatures on inner wall surface. regression dependences temperature thickness solid PCM layer determined. Using presented obtained dependencies, we determined time graphs fluid outlet during discharge. Based results presented, it was found that 72.7 tons (dimensions: 6 × 3.71 2.15 m) can replace high-pressure heater №1 low-power plant (50 MW) 3450 s.

Язык: Английский

Процитировано

1