The size of the global micro stirling engine market was worth USD 1.67 billion in 2023. The global market is anticipated to grow at a CAGR of 15.89% from 2024 to 2032 and be worth USD 6.30 billion by 2032 from USD 1.94 billion in 2024.
The micro stirling engine is a closed-cycle regenerative heat engine, in which the working fluid is permanently confined in the system. The working fluid is gaseous in nature. The Stirling engine works by cyclical compression and expansion of gas within a cylinder, which leads to the generation of heat within the heat engine. The heat generated is then transformed into mechanical work by pressing the piston. There are three types of Stirling engines, namely alpha type, beta type, and gamma type. The Lamina flux engine is another type of Stirling engine that is still in the R&D phase. The alpha type requires high temperature and produces the most power because it has two power pistons. The beta type requires less heat than the alpha type. In the beta type, the power piston and the plunger are placed in the same cylinder. The Gamma Stirling engine requires the least amount of heat. It is also known as a low-temperature differential Stirling engine. A Stirling engine is a heat engine, which works by cyclical compression at different temperatures. The Stirling engine is a perfect substitute for the IC engine. Hundreds of models of Stirling engines have been developed and embody the basic thermodynamic concept. Stirling engine technology is available in many different models and sizes on the market.
The Micro Stirling Engine is the smallest low-temperature differential Stirling engine. It can work at low temperatures and high speeds. The Micro Stirling engine is difficult to manufacture, but it performs successfully compared to large Stirling engines. The amount of working fluid in the engine is much less than that of larger Stirling engines. A large Stirling engine can only overcome a small amount of friction, whereas a micro Stirling engine shuts down if there is friction. The call for micro Stirling engines is supposed to increase exponentially in the coming years.
The micro stirling engine is unique in that its theoretical efficiency is almost equal to that of the Carnot cycle. It is also sometimes referred to as an external combustion engine because the heat source is outside the unit. The micro Stirling engine is flexible in fuel. It uses natural gas, but it can also run on biogas or hydrogen. These gases can be employed when they become widely available in the near future. The micro Stirling engine represents a transitional technology and a potential renewable energy converter. This is estimated to boost the micro Stirling engine market in the near future. The various applications of the micro stirling engine include water pump stations, combined thermal and power plants, solar power generation, Cyro-Stirling chillers, and micro-cogeneration.
The Micro Stirling engine runs quietly and offers very high efficiency. This is a great advantage of the micro stirling engine. In addition, it is ecological because this type of engine achieves complete combustion. It offers high reliability due to technological simplicity. It also requires little maintenance. The Stirling engine is perfect with substitutive and renewable energy sources. It is foreseen to become a suitable solution in the event of rising conventional fuel prices or peak oil, which is expected to drive the expansion of the worldwide micro Stirling engine market.
The cost of stirling engines and the lack of industry exposure and information on stirling engines are likely to hamper the industry's expansion.
Stirling engines are attracting attention for their higher thermodynamic efficiency and low-temperature differences compared to other cycles. The Stirling engine uses any external heat source from renewable or non-renewable resources, which is expected to drive the expansion of the worldwide Stirling engine market. Interest in decentralized combined heat and power generation has grown in recent years, offering advantageous opportunities for the main market players.
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REPORT METRIC |
DETAILS |
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Market Size Available |
2023 – 2032 |
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Base Year |
2023 |
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Forecast Period |
2024 - 2032 |
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CAGR |
15.89% |
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Segments Covered |
By Arrangement, Application, and Region. |
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Various Analyses Covered |
Global, Regional & Country Level Analysis, Segment-Level Analysis, DROC, PESTLE Analysis, Porter’s Five Forces Analysis, Competitive Landscape, Analyst Overview of Investment Opportunities |
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Regions Covered |
North America, Europe, APAC, Latin America, Middle East & Africa |
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Market Leaders Profiled |
Qnergy (U.S.), United Sun Systems International Ltd (Sweden), Sunpower Inc. (U.S.), Genoastirling S.r.l. (Italy), Microgen Engine Corporation (Netherlands), okoFEN Forschungs- und Entwicklungs Ges.m.b.H. (Austria), Cool Energy, Inc (U.S), ADI Thermal Power Corp (U.S), and Others. |
Beta engines have a piston-plunger arrangement. Beta engines are available as kinematic or free-piston engines.
The marine engine segment is predicted to contribute a significant share of the worldwide micro stirling engine market. The Stirling engine is employed in some submarines because it produces very little noise, which does its job for the submarine.
The micro sterling engine industry in North America is presently growing, followed by Europe. The outlook for the micro Stirling engine market looks positive in North America, as they can be employed with solar collectors. Also, in Europe, the call for micro Stirling engines is escalating due to the emphasis on system flexibility to integrate heat pump systems. Environmental concerns, the maturity of associated markets such as residential boilers, and the growing interest in a distributed generation are the main drivers of the Stirling micromotor market. The European region is predicted to develop with a considerable CAGR in the worldwide micro stirling engine market. The market expansion is attributed to the increased emphasis on offering the flexibility of a system to integrate heat pump systems. Stringent regulations regarding environmental pollution, the maturity of associated markets such as residential boilers, and an interest in a distributed generation are some of the main factors driving the expansion of the worldwide micro stirling engine market.
The European micro stirling engine market is supposed to record a CAGR of more than 6% through 2026. Flagship programs supporting cogeneration, resilience initiatives, and state incentives are predominant measures that positively influence the call of products. In addition, the rising installation of compact cogeneration units in commercial establishments, including office buildings, educational establishments, and healthcare establishments, will boost industry statistics. The market call for combined heat and power microgeneration in Germany is determined to increase due to the increase in programs focused on cogeneration, followed by increased investments by the main national players in the integration of commercial and residential fuel cell systems. For example, in 2016, the German government launched the “KFW 433 Flagship Program” to boost the installation of FC micro-cogeneration plants with the goal of deploying more than 6,600 units by 2026.
The worldwide pandemic caused by the new coronavirus comes at a time when the economy and the energy and power industry were expecting a recovery. While the GDP expansion foreseen was 5.5%, COVID-19 could have a negative impact of 1 to 2% on predicted expansion rates. The absolute magnitude of the impact depends on the duration of the current lockdown and the impact caused by this pandemic. The coronavirus outbreak will have a negative impact on the energy and power industry. It is predicted that there will be an overall revenue impact of at least US$ 1.5-2 billion per month across the industry. Even after opening, the call is predicted to decline further, with discretionary spending in the background. This will be accompanied by a transition to new technologies that will increase the cost of ownership. Call from the energy sector could see a decline but is estimated to pick up in the U-style.
Fondazione Bruno Kessler has designed a new sustainable technology through its Renewable Energy and Environmental Technologies unit.
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