Parabolic solar trough systems have seen limited deployments in cold northern climates as they are more suitable for electricity production in southern latitudes. A numerical dynamic model is developed to simulate troughs installed in cold climates and validated using a parabolic solar trough facility in Winnipeg. The model is developed in Simulink and will be utilized to simulate a trigenerati...

Using zeotropic mixtures as working fluids can improve the thermal efficiency of Organic Rankine cycle (ORC) power plants for utilising geothermal energy. However, currently, such ORC systems cannot regulate the composition of zeotropic mixtures when their operating conditions change. A compositionadjustable ORC system could potentially improve the thermal efficiency by closely matching the cyc...

Organic Rankine Cycles (ORC) can be used to convert low-grade waste heat to electricity. The working fluid employed in the ORC has a strong influence on the thermal efficiency of the system. Until now, methods for the selection of working fluids have been based on trial and error approaches which are not very effective. As a result, the motivation for the work reported in this paper is to remed...

Organic Rankine cycles (ORC) are used to produce power from low-temperature heat sources. In the low output range (

A thermodynamic limitation of single-component working fluids in organic Rankine cycles (ORCs) is the large exergy destruction (and, consequently, useful power loss) associated with evaporation and condensation. Due to their non-isothermal phasechange behaviour, non-azeotropic working-fluid mixtures have shown reduced exergy losses, leading to improved cycle efficiencies and power outputs. Thes...

Organic Rankine Cycles (ORC) and Trilateral Flash (TFC) are very similar power cycles; ideally, they have a reversible adiabatic (isentropic) compression, an isobaric heating, isentropic expansion cooling. The main difference is that for ORC, the heating includes full evaporation of working fluid (prior expansion); therefore, starts in saturated or dry vapour state, while TFC, terminates upon r...

Combined heat and power plants (CHPPs) allow for significant savings in primary energy resources a reduction environmental pollution. Mostly it is carried out using steam turbines. However, the eighties of twentieth century, new promising direction development cogeneration appeared. These are operating on organic Rankine cycle (ORC). An analysis innovations abroad required adaptation this to Ru...

Nowadays, the Organic Rankine Cycle (ORC) system, which operates with organic fluids, is one of the leading technologies for “waste energy recovery”. It works as a conventional Rankine Cycle but, as mentioned, instead of steam/water, an organic fluid is used. This change allows it to convert low temperature heat into electric energy where required. Large numbers of studies have been carried out...