Rankine Cycle Articles & Analysis

Energy–Utilisation Diagram (EUD) has been used to identify exergy loss in general process units, whereas Power Availability Diagram (PAD) provides the difference between exergy changes of two pressure exchangers. Two modifications of the original PAD are proposed for better exergy loss visualisation. Firstly, the energy donor curve is shifted to the location of energy acceptor. Secondly, arrows ...

By Inderscience Publishers

A novel power generation cycle is proposed in this paper taking hydrogen as fuel and using steam generated by hydrogen firing as working fluid. The progress of the development work and side issues such as the application of hydrogen combustion turbines to environmentally clean fossil fuel power plants for early commercialisation of the system are reviewed. We propose the hydrogen-fired Rankine ...

By Inderscience Publishers

This paper presents the first and second laws of thermodynamics analysis for organic Rankine cycles (ORCs), using dry organic fluids as the working fluids. The dry organic fluids for this study were R227ea, RC318, R236fa, Isobutane, R600a, R245fa, HFE7000, R123 and R113. Effects of the operating parameters such as turbine inlet temperature and pressure on the thermal efficiency, exergy ...

By Inderscience Publishers

In the present work, a new technique is proposed for feedwater heating in Low Pressure (LP) turbine section of regenerative Rankine cycle. Main objective of this technique is to minimise exergy destruction in feedwater heating. The proposed technique comprised of using absorption heat boosters i.e. Absorption Heat Pump (AHP) and Absorption Heat Transformer (AHT) with LiBr–water as the working ...

By Inderscience Publishers

Consumers pay more for electricity than necessary partly because commercial power plant operating criteria are not universally valid. Although such plants are commonly designed to provide electricity at least cost for given conditions, operating criteria lack a rigorous thermodynamic basis. The current empiricism alone costs US consumers billions of dollars per year. This dilemma exists because ...

By Inderscience Publishers

Diesel engines reject a considerable amount of energy to the ambience through the exhaust gas. Significant reduction of engine brake-specific fuel consumption (bsfc) could be attained by recovering a significant part of exhaust gas heat. Various techniques have been proposed in the past to recover exhaust energy: mechanical, electrical turbocompounding and Rankine Bottoming Cycles. In the present ...

By Inderscience Publishers

Power generation systems using an ammonia–water mixture instead of water as working fluid have attracted much research interest over the past 20 years, since they have a potential to convert more energy in low–grade heat source into power and to improve the power generating processes in several ways. In this work comparative exergy analysis based on the second law of thermodynamics is carried out ...

By Inderscience Publishers

A novel multi–generation system producing power, pure water, cooling and heating is proposed and analysed in detail. The system comprises a hybrid generator-absorber heat exchanger (GAX), the Organic Rankine Cycle (ORC), the absorption heat transformer (AHT) and a desalination system. For comparison purposes, three working fluids, including R123, Isopentane and n–butane are considered in the ORC. ...

By Inderscience Publishers

Parabolic trough power plants use concentrated direct insulation for steam generation in a Rankine cycle. The fundamentals for direct steam generation in parabolic troughs have been developed in recent years, the feasibility was successfully demonstrated at a solar powered test facility reaching steam temperatures of 400°C at a maximum pressure of 100 bar. Important components for the accelerated ...

By Inderscience Publishers

Biogas/Heat-to-Power Application using a Dreyer & Bosse CHP power unit Location: Trechwitz, Germany Site Gross Power Output Range 500Kwe + 30-35kWe from Electratherm ORC Thermal Heat Input Range: ?375-450kWt Hot Water Input Range:? 90-95°C (118-203°F) Hot Water Flow Range:? 39 m3/hour (172 GPM) Ambient Temperature: 0-15°C (32-59°F) ElectraTherm installed its first ...

By Wolf Power Systems GmbH

This plant has an electrical output of 800 kW and a thermal power of 760 KW. At the biogas plant in Trechwitz, an unconventional heat utilisation model was installed. The waste heat from the CHP unit is used to generate power in an ORC unit (Organic Rankine Cycle). The heat goes into an evaporator, and the operating liquid is converted into pressurised steam. The steam is depressurised by a ...

By Wolf Power Systems GmbH

The objective of this paper is to create a small power plant, (producing 2 MW annually), which will be using solar energy as a driving fuel. The system is made up of three sub-systems: a set of Solar Collectors (SCS), a Rankine power cycle and a Heat Exchanger Network (HEN). Two cases with variations in the operation of the solar collectors and the heat exchanger network will be examined. The ...

By Inderscience Publishers

Plant: 1 x ZE-50-LT Low-Temperature Organic Rankine Cycle (ORC) Module, nominal output 50 kWe Nominal output: 50 kWe Application: Heat recovery from engines (a Jenbacher biogas-fueled genset) Location: Province of Bozen, South Tyrol, Italy Manager: Private Italian firm The owner of this plant, a SME located near Bolzano/Bozen, Italy, decided to install a micro-thermolectric power plant on ...

By Zuccato Energia Srl

Plant: 1 x ZE-50-LT Low-Temperature Organic Rankine Cycle (ORC) Module, nominal output 50 kWe Nominal output: 50 kWe Application: Heat recovery from engines (Jenbacher biogas-fueled genset) Location: Province of Venice, Veneto, Italy Manager: Private Italian firm The client who commissioned this plant is a livestock farm specializing in cattle and located in the province of Venice, Italy, ...

By Zuccato Energia Srl

Plant: 1 x ZE-50-LT Low-Temperature Organic Rankine Cycle (ORC) Module, nominal output 50 kWe Nominal output: 50 kWe Application: Heat recovery from engines (two Jenbacher biogas-fueled gensets) Location: Province of Mantua,Lombardy,Italy Manager: Private italian firm The client, located in the province of Mantua, Lombardy, Italy is a livestock farm specializing in pigs, which has decided to ...

By Zuccato Energia Srl

Plant: 1 x ZE-50-ULH Low-Temperature Organic Rankine Cycle (ORC) Module, nominal output 50 kWe Nominal output: 50 KWe Application: Heat recovery from processes (pyrolitic gasification) and engines (syngas-fueled genset) Location: Province of Rome, Lazio, Italy Manager: Private italian firm The firm who commissioned this plant is the manager of a large cinema multiplex and related mall ...

By Zuccato Energia Srl

Plant: 1 x ZE-50-ULH Low-Temperature Organic Rankine Cycle (ORC) Module, nominal output 50 kWe Nominal output: 50kWe Application: Didactic hybrid plant (solar concentrator panels + methane-fueled gas boiler) Location: Province of Enna, Sicily, Italy Manager: Private Italian University The client who commissioned this plant is a recently-estabilished private university which has decided to ...

By Zuccato Energia Srl

Plant: 1 x ZE-50-LT Low-Temperature Organic Rankine Cycle (ORC) Module, nominal output 50 kWe Nominal output: 50 kWe Application: Heat recovery from engines (two MAN biogas-fueled gensets) Location: Province of Padua, Veneto, Italy Manager: Private Italian firm The cattle farm which commissioned this plant lies in a small village in a corner of the province of Padua adjoining the province of ...

By Zuccato Energia Srl

The Hot-Dry-Rock-(HDR) technology allows a location-independent utilisation of geothermal heat, because aquifers in deep formations, i.e. layers filled with water, are not necessary. The flow paths for the circulating water in a depth of 4 km are created by hydraulic fracturing of existing gaps. Due to the fact that this new technology is quite cost-intensive, high annual load duration of the ...

By Inderscience Publishers

Plant: 2 x ZE-40-ULH Low-Temperature Organic Rankine Cycle (ORC) Modules, nominal output 40 kWe each Nominal output: 40 kWe Application: Heat recovery from engines (MAN vegetable oil-fueled gensets) Location: Province of Bolzano / Bozen, South Tyrol, Italy Manager: Private Italian firm The client who commissioned this plant is a well-known construction company having its seat in a small ...

By Zuccato Energia Srl