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cogeneration_efficiency [2015/01/28 17:01] – created codina | cogeneration_efficiency [2023/11/16 15:21] (current) – external edit 127.0.0.1 | ||
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+ | ====== Cogeneration efficiency ====== | ||
+ | [[c_cogen_more|Centralized]] and [[d_cogen_more|decentralized cogeneration]] systems has two efficiencies as they deliver two products (heat & electricity): | ||
+ | $\eta_{th} = \frac{Q^-}{Q+}$ | ||
+ | ^$\eta_{th}$ |Thermal efficiency [%] | | ||
+ | ^$Q^-$ |Heat delivered by the cogeneration system [W] | | ||
+ | ^$Q^+$ |Heat delivered by the fuel combustion (LHV basis) [W] | | ||
+ | |||
+ | $\eta_{el} = \frac{E^-}{Q+}$ | ||
+ | ^$\eta_{el}$ |Electrical efficiency [%] | | ||
+ | ^$Q^-$ |Electricity delivered by the cogeneration system [W] | | ||
+ | ^$Q^+$ |Heat delivered by the fuel combustion (LHV basis) [W] | |