Optimization of three power and desalination plants and exergy-based economic and CO2 emission cost allocation and comparison

Chun, Andre; Barone,; Lourenço, Atilio

doi:10.1007/s42108-019-00047-3

Cited by 4 publications

(2 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Simulation of the refrigeration unit employed data shown in Table 3. The following assumptions were also considered [39]: Temperature at #9 is defined by the efficiency of the intermediate heat exchanger; temperature at #13 is the evaporation temperature; temperatures of #16 and #17 are the same (condenser and absorber share the same physical structure); the solution recirculating in the absorber is heated until the saturation temperature of the weak solution at #21; points #6, #7, #13, #16, and #20 are saturation points; and [13] Evaporation temperature at #13 5°C…”

Section: Absorption Refrigeration Unitmentioning

confidence: 99%

“…More details on exergoeconomics can be found in Lazzaretto and Tsatsaronis [10], Tsatsaronis [11], and Ahmadi and Dincer [12]. Exergoeconomics has been employed for cost allocation purposes in a multi-product system by Chun, Barone, and Lourenço [13], while simple trigeneration systems were the focus of Lozano et al [14] and Carvalho et al [15]. A comprehensive literature review on energy, exergy, exergoeconomic, and economic analyses of thermal power plants was presented by Kumar [16].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Energy, exergy, and exergoeconomic evaluations of a micro-trigeneration system

Marques

Carvalho

Lourenço

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

This study presents energy, exergy, and exergoeconomic assessments for a natural gas-fueled micro-trigeneration unit, which encompasses an internal combustion engine (ICE), an absorption refrigeration system (ammonia-water), and a heat recovery unit. The energy system is designed to meet the electricity and cooling demands of a university building, while heat is directed to a biodiesel plant located on site. The analyses comprehended energy and exergy parameters (first and second laws of thermodynamics). Then, the SPECO methodology was applied for the exergoeconomic assessment, which associates monetary values with exergy flows. The ICE presented the highest irreversibility (61.24 kW) and the highest cost of exergy destruction (21.56 BRL/h), followed by the steam generator (5.52 kW and 6.71 BRL/h, respectively). The exergoeconomic assessment indicated the components that could benefit from improvements: steam generator (cooling of exhaust gases before entry into the generator) and the heat exchanger of the absorber (substitution of the exchanger and/or pre-heating of input air). This study contributes to narrow the knowledge gap regarding the exergoeconomic assessment of compact trigeneration systems, besides making a case for the utilization of ICE as prime movers.

show abstract

Section: Absorption Refrigeration Unitmentioning

confidence: 99%