This paper presents the performance assessment and working fluid selection for a novel integrated vapor compression cycle-organic Rankine cycle system (i-VCC-ORC), which recovers ultra-low-temperature waste heat rejected (50 °C) by condenser of (VCC). The analyses are carried out refrigeration capacity (heat input) 35kW along with component sizing organic (ORC). effects operational parameters o...

The dependency on fossil fuels for power generation can be reduced by enhancing the energy efficiency of generating systems. refrigeration systems that typically use electricity consume a significant portion supplied to cities. STAND-ALONE system which consists combined Organic Rankine Cycle and Vapor Compression (ORC-VCR) is analyzed using first law thermodynamics. Dry natural hydrocarbons suc...

Objective. The aim of the work is to determine thermodynamic efficiency modernized refrigeration unit a household refrigerator compared basic model using entropystatistical method. Method. В ходе работы при проведении исследований применен научный метод системного анализа, а также энтропийно-статистический термодинамического анализа определении эффективности холодильного цикла бытового холодиль...

Abstract With global warming and climate change, the world is experiencing a steady temperature rise. Hence need for effective efficient air conditioning, cooling refrigeration systems higher than ever. One of key elements influencing system performance working fluid. From 2022, new in UK must not use fluids with potential (GWP) above 150. Widely used R134a, GWP 1430, therefore being banned sui...

En la presente investigación se detallan los mapas de patrones flujo que generan en una tubería horizontal un colector/evaporador componente bomba calor expansión directa asistida por energía solar, utilizando el refrigerante R600a como fluido trabajo. El estudio realizó 3,8 mm diámetro interno y 1000 longitud, las velocidades masa variaron entre 197,59 267,26 kg·m-2·s-1, 72,83 488,27 W·m-2, du...

Due to the entry into force in 2014 of European F-Gas Regulation n° 517/2014 and subsequent Kigali amendment, phase-out medium high-GWP refrigerants has speeded up all refrigeration fields. The effect on plug-in or stand-alone systems meant that other environmentally friendly must replace R134a with low ultra-low GWP maintaining same operating conditions reducing energy consumption. Extended ex...