Abstract
Stress calculations are necessary to determine the feasibility and profitability of a heat storage tank’s construction. The article presented normative methods of stress calculations for a heat storage tank. Results were verified by finite element analysis. These stress calculations enabled us to determine wall and weld thickness. The calculations were made on the example of a tank with a nominal pressure of 10 bar. The work undertook an extensive analysis of the stresses occurring in a pressure tank, described the finite element method and showed examples of ways in which it could be used. During stress analysis, three types of materials were compared: carbon steel St0 (S185), stainless steel (304) and boiler steel (P 265 GH). A brief overview of types of thermal energy storages was also provided.
Highlights
The world is currently facing a climate crisis
When analyzing the results of calculations for complex stresses, it was noted that the tank—which was designed using classical methods, with nominal pressure of 10 bar and a selected wall thickness of 3 mm—transferred even higher pressures without exceeding the yield point of 255 MPa
The work showed a method of designing tanks by normative calculations and the verification of those results by finite element analysis
Summary
The world is currently facing a climate crisis. Construction is an industrial field that contributes significantly to the consumption of fossil fuels. About 40% of energy is used in mid-latitude and high-latitude countries to provide hot water. According to forecasts, this value could increase to 50% by 2050, leading to increasing air pollution [1]. Obtaining energy from renewable sources, for example, from solar collectors, is a promising solution to the above problem. One major disadvantage is that energy is not produced continuously. For this reason, thermal energy storage systems are seeing increased use in the heating systems of single-family houses. The most commonly used thermal energy storage solutions are water heat storage tanks, which serve as parts of heat distribution systems in domestic hot water and central heating systems
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