Post by account_disabled on Feb 17, 2024 6:18:20 GMT -5
Units operate exclusively on natural gas and electricity (maximum power 1kw). The thermal energy that varies according to the heating needs of the home. Technical characteristics of a microcogeneration generally, a cogeneration unit is defined according to the electrical and thermal power, thermal efficiency and/or overall efficiency. A chp unit can also be characterized by its primary energy savings. Technically, the fuel source used, the type of engine, the generator, the size of the unit or the noise are characteristics that are commonly reported by different manufacturers. The overall efficiency of a cogeneration unit often exceeds 85% . This efficiency, and therefore energy savings, varies mainly depending on the technology, fuel and heat and electricity production systems initially used. Type of microcogeneration systems the main microcogeneration systems marketed or under development are based on the following thermo-mechanical conversion technologies: engines internal combustion engines are distinguished from those with external combustion. It is the latter that are most proposed by manufacturers as a.
Domestic cogeneration unit. Different fuels may be suitable, but mainly gas or oil engines are used. Gas internal combustion engines are the most efficient. They have a fairly good overall electrical efficiency (between 20 and 26%) and are available in low power (for mini-cogeneration: around 3 to 8 kw). They also adapt very well to variable demand and hot Phone number list Water production. However, they have a limited lifespan, typically between 50,000 and 60,000 hours, and require regular maintenance, which increases their maintenance cost. They are not conducive to steam production, but their favorable electrical efficiency allows them to achieve a fairly good overall efficiency of plus or minus 90%. External combustion engines are 14 to 16% less efficient than internal combustion engines, but are particularly suitable for micro-chp. Their electrical powers are generally equivalent to 1 kw in domestic cases and do not exceed 10 kw in all cases. Its available heating capacities are below 50 kw.
For the domestic microgeneration unit , the installed thermal power will always be based on the user's needs and can vary between 5 and 25 kwº in most cases. An external combustion engine allows fuel flexibility in both fossil fuel and renewable energy. It has good performance at partial load, causing less pollution than an internal combustion engine. Due to the absence of gas and explosion, it generates noise and considerably reduces vibrations. Turbine turbines, whether gas or steam, are not available in small powers. To obtain the best performance, its electrical power must be greater than or equal to 30 kw. They are therefore unsuitable for microgeneration and are reserved for larger scale productions in the industrial sector. They are also less suitable for variable demand and have lower electrical efficiency than motors. However, turbines are advantageous for large powers with the need for steam production. They also require less maintenance than engines and all types of fuels are allowed.