Modelling system integration of a micro solar Organic Rankine Cycle plant into a residential building

Arteconi, Alessia; Zotto, Luca Del; Tascioni, Roberto; Cioccolanti, Luca

doi:10.1016/j.apenergy.2019.113408

Cited by 42 publications

(13 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The study is performed by means of a thermodynamic and economic analysis focusing on the energetic, exergetic, and economic performances. Several reasonable assumptions below are defined to simplify the computation process [37][38][39]: (1) each component and operating point is under equilibrium and in a steady-state condition; (2) heat losses and pressure losses are neglected in the pipes and in all components; (3) the isentropic efficiencies of the expander, pump, and generator are assumed to be 0.7, 0.8, and 0.9, respectively; (4) the changes in the kinetic and potential energy of the fluids Energies 2020, 13, 1830 6 of 19 can be neglected; (5) the pinch point temperature differences (T pp ) in the gas heater, preheater, and regenerator are set to be 30 • C, 5 • C, and 15 • C; and (6) temperatures of the condensation process and the ambient are set at 25 • C to guarantee that CO 2 can be condensed stably during the phase change process. The properties of the working fluid are derived from the REFPROP-NIST [40].…”

Section: Mathematical Modelingmentioning

confidence: 99%

Fluid Selection of Transcritical Rankine Cycle for Engine Waste Heat Recovery Based on Temperature Match Method

et al. 2020

View full text Add to dashboard Cite

Engines waste a major part of their fuel energy in the jacket water and exhaust gas. Transcritical Rankine cycles are a promising technology to recover the waste heat efficiently. The working fluid selection seems to be a key factor that determines the system performances. However, most of the studies are mainly devoted to compare their thermodynamic performances of various fluids and to decide what kind of properties the best-working fluid shows. In this work, an active working fluid selection instruction is proposed to deal with the temperature match between the bottoming system and cold source. The characters of ideal working fluids are summarized firstly when the temperature match method of a pinch analysis is combined. Various selected fluids are compared in thermodynamic and economic performances to verify the fluid selection instruction. It is found that when the ratio of the average specific heat in the heat transfer zone of exhaust gas to the average specific heat in the heat transfer zone of jacket water becomes higher, the irreversibility loss between the working fluid and cold source is improved. The ethanol shows the highest net power output of 25.52 kW and lowest electricity production cost of $1.97/(kWh) among candidate working fluids.

show abstract

Section: Mathematical Modelingmentioning

confidence: 99%

Fluid Selection of Transcritical Rankine Cycle for Engine Waste Heat Recovery Based on Temperature Match Method

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Similar work was performed by Ramos et al [28] who maximized the electrical power considering the operational limits of the solar collector of two systems flat-plate solar collector (FPCs-ORC) and evacuated-tube collector-ORC (ETCs-ORC). Arteconi et al [29] studied the influence of the electrical and thermal performance of an ORC system with evacuated tube solar collector and storage tank.…”

Section: Introductionmentioning

confidence: 99%

Energy, exergy, and environmental assessment of a small-scale solar organic Rankine cycle using different organic fluids

Piñerez

Ochoa

Forero

2021

Heliyon

View full text Add to dashboard Cite

This article presents an energetic, exergetic, and environmental (3E) analysis of a solar powered simple Rankine Organic Cycle (ORC). The ORC is simulated using three organic working fluids, such as Toluene, Cyclohexane, and Acetone, meanwhile the solar system uses thermal oil Therminol 75. The present study shows the performance of this coupled system using historical solar annual radiation data from four of the highest solar potential locations in Colombia. Data used correspond to data for the cities Rancho Grande, Puerto Bolivar, Manaure, and Nazareth. Simulations were performed using commercial programs as MATLAB® and REFPROP 9.0. Energy production, the energy and exergetic efficiencies of the system, the exergy destruction was calculated based on the input of the global solar radiation. Effects generated by each working fluid in the solar powered ORC system was determined. It was stablished that the heat obtained in the solar collector in combination with a storage tank is incorporated during non-radiation hours guarantees the thermal stability of the working fluid in the ORC. The best performance corresponds to the Rancho Grande city, being the Toluene the corresponding working fluid with the highest energy (14.6%) and exergetic (7.37%) efficiencies, as well as the maximum power generation (5.50 kW) for October month, meanwhile, the highest exergy destruction values correspond in April. A sensitivity analysis of the individual elements of the system was performed. This study revealed the preference of a lower evaporator pinch point temperature, higher turbine thermal efficiency, pump thermal efficiency, and pressure ratio to obtain better energy and exergy efficiency of the solar powered ORC system. Additionally, the potential environmental impact of the system was evaluated through a Life Cycle Analysis, obtaining for the solar system solar collector has the highest environmental impact with 78557850 mPts. Meanwhile for the ORC, the turbine registers the most significant environmental impact with 295516 mPts (7.34%), when Toluene is used as a working fluid and copper as a construction material in the location of Rancho Grande. In conclusion, the potentiality of planning the operation of solar powered ORC was successfully evaluated for four specific locations in Colombia.

show abstract

“…ORC technology is similar to the classic Rankine cycle but uses an organic liquid instead of water. This technology allows efficient use of heat sources with low thermal potential, such as biomass, geothermal energy, and solar energy [22][23][24]. In this case, the heat input to the system can be delivered by several renewable energy sources available locally, e.g., solar energy and biomass [25,26].…”

Section: Introductionmentioning

confidence: 99%

Technical and Economic Assessment of Micro-Cogeneration Systems for Residential Applications

Atănăsoae

2020

Sustainability

View full text Add to dashboard Cite

The benefits of cogeneration or combined heat and power (CHP) of large power systems are well proven. The technical and economic viability of micro-cogeneration systems is discussed in this paper as it compares to the separate production of electricity and heat. A case study for an individual household is also provided to better understand the benefits of small power cogeneration from renewable energy sources. Two micro-CHP systems are considered for analysis: the first with Stirling engine, and the second with Rankine Organic Cycle. The reference scenario is an individual household with a gas boiler and electricity from the public network. The results show that it is possible that the payback period for the micro-CHP from renewable energy sources will fall below the accepted average value (<15 years) without the support schemes. The economic and environmental benefits of small power cogeneration systems compared to the traditional scenario are highlighted.

show abstract

Modelling system integration of a micro solar Organic Rankine Cycle plant into a residential building

Cited by 42 publications

References 25 publications

Fluid Selection of Transcritical Rankine Cycle for Engine Waste Heat Recovery Based on Temperature Match Method

Fluid Selection of Transcritical Rankine Cycle for Engine Waste Heat Recovery Based on Temperature Match Method

Energy, exergy, and environmental assessment of a small-scale solar organic Rankine cycle using different organic fluids

Technical and Economic Assessment of Micro-Cogeneration Systems for Residential Applications

Contact Info

Product

Resources

About