Energy Systems for Multigeneration Purposes

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Energy Systems for Multigeneration Purposes ( energy-systems-multigeneration-purposes )

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5.7.3 Economic analysis of system III Renewable based multigeneration system shown in Fig 4.3 has some similar parts as the first multigeneration system. Here, the cost functions of the ones that differ from the first system are provided. 5.7.3.1 PV/T solar collector The purchase cost of PV/T solar collector is a function of collector area that can be expressed as follows [112]: ( ) (5.254) where nx and ny is the number of PV/T in series and parallel, L and b are the PV/T length and width respectively. 5.7.3.2 Flat plate solar collector in OTEC cycle As shown in Fig. 4.3, a flat plate solar collector is used for the OTEC system to increase the efficiency of the system. The purchase cost of solar flat plate collector can be expressible as ( ) (5.255) Here, is the flat plate collector area in m2. 5.7.3.3 OTEC cycle The OTEC cycle has 4 major components. The purchase cost of each component can be found as follows:  For OTEC turbine and generator The cost function of the ORC turbine can be calculated using the following formula [103]: () (̇) (̇) Here, ̇ is the work generated by the turbine in kW.  For OTEC evaporator The purchase cost of OTEC evaporator can be calculated as follows [103]: () ( ) (5.256) (5.257) (5.258) where ̇ ∆ 112

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Energy Systems for Multigeneration Purposes

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