Experimental characterization of an Organic Rankine Cycle (ORC) for micro-scale CHP applications

Peris, Bernardo; Navarro-Esbrí, Joaquin; Molés, Franciscó; Martí, Jose Pascual; Mota-Babiloni, Adrián

doi:10.1016/j.applthermaleng.2015.01.020

Cited by 61 publications

(18 citation statements)

References 16 publications

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“…In this context, binary organic Ranking cycles (ORCs) play a crucial role [10,[16][17][18]. ORCs represent an attractive and flexible technology for small applications owing to their capability to convert low enthalpy heat sources (i.e., waste heat [19][20][21][22][23] and renewable sources [24][25][26]) to electricity. Specifically, lower maintenance costs, better partial load performance, faster start-up and stop procedures, and higher safety and lifetime (up to 30 years) with respect to conventional installations are guaranteed [7,27].…”

Section: Introductionmentioning

confidence: 99%

Integrated Geothermal Energy Systems for Small-Scale Combined Heat and Power Production: Energy and Economic Investigation

Morrone

Algieri

2020

Applied Sciences

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In recent years, an increasing interest in geothermal energy has been registered in both the scientific community and industry. The present work aims to analyse the energy performance and the economic viability of an innovative high-efficiency geothermal-driven integrated system for a combined heat and power (CHP) application. The system consists of a heat exchanger (HEX) and a transcritical organic Rankine cycle (ORC) that work in parallel to exploit a high-temperature geothermal source (230 °C) and satisfy the energy demand of a commercial centre located in Southern Italy. The ORC and HEX sub-units can operate at partial load to increase the system flexibility and to properly react to continuous changes in energy request. A lumped model was developed to find the proper operating conditions and to evaluate the energy production on an hourly basis over the whole year. In particular, a multi-variable optimisation was implemented to find the most suitable configuration and a 101.4 kWel ORC was selected while the HEX nominal power was 249.5 kWth. The economic viability of the integrated system was evaluated in terms of net present value and payback period and different operating strategies were compared: thermal-driven, electric-driven, and a mixed strategy. The latter turned out to be the best solution according to both energy and economic criteria, with electric and thermal self-consumptions larger than 90%, with no heat dumping and a payback time close to five years.

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Section: Introductionmentioning

confidence: 99%

Integrated Geothermal Energy Systems for Small-Scale Combined Heat and Power Production: Energy and Economic Investigation

Morrone

Algieri

2020

Applied Sciences

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“…The ratio of pumping power consumed to generated power output is known as back work ratio, for a gross power of 1001.4 W the back work ratio was found to be 18.9% calculated from Table 2. Back work ratio from a commercial unit investigated by Peris et al with a gross electrical output of 6.9 kW was mentioned as 18.84% [45] and for a 36.58 kW gross electrical power output back work ratio was 15.5% [46] for R245fa based systems. Fig.…”

Section: Resultsmentioning

confidence: 99%

Design and experimental investigation of a 1kW organic Rankine cycle system using R245fa as working fluid for low-grade waste heat recovery from steam

Usman

Imran

Lee

et al. 2015

Energy Conversion and Management

133

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“…In addition, the organic Rankine cycle is often used in conjunction with other systems to achieve higher efficiency. Peris et al [4] were interested in using ORC for combined heat and power (CHP) applications, and Capata et al [5] recovered vehicle waste heat with small-scale ORC. In addition, solar energy, wind energy, and ocean temperature difference energy are of particular interest in small-scale ORC systems [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Investigating the System Behaviors of a 10 kW Organic Rankine Cycle (ORC) Prototype Using Plunger Pump and Centrifugal Pump

et al. 2020

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Based on a 10-kW organic Rankine cycle (ORC) experimental prototype, the system behaviors using a plunger pump and centrifugal pump have been investigated. The heat input is in the range of 45 kW to 82 kW. The temperature utilization rate is defined to appraise heat source utilization. The detailed components' behaviors with the varying heat input are discussed, while the system generating efficiency is examined. The exergy destruction for the four components is addressed finally. Results indicated that the centrifugal pump owns a relatively higher mass flow rate and pump isentropic efficiency, but more power consumption than the plunger pump. The evaporator pressure drops are in the range of 0.45-0.65 bar, demonstrating that the pressure drop should be considered for the ORC simulation. The electrical power has a small difference using a plunger pump and a centrifugal pump, indicating that the electric power is insensitive on the pump types. The system generating efficiency for the plunger pump is approximately 3.63%, which is 12.51% higher than that of the centrifugal pump. The exergy destruction for the evaporator, expander, and condenser is almost 30%, indicating that enhancing the temperature matching between the system and the heat (cold) source is a way to improve the system performance.

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Experimental characterization of an Organic Rankine Cycle (ORC) for micro-scale CHP applications

Cited by 61 publications

References 16 publications

Integrated Geothermal Energy Systems for Small-Scale Combined Heat and Power Production: Energy and Economic Investigation

Integrated Geothermal Energy Systems for Small-Scale Combined Heat and Power Production: Energy and Economic Investigation

Design and experimental investigation of a 1kW organic Rankine cycle system using R245fa as working fluid for low-grade waste heat recovery from steam

Investigating the System Behaviors of a 10 kW Organic Rankine Cycle (ORC) Prototype Using Plunger Pump and Centrifugal Pump

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