Capacity and efficiency of any refrigerating system diminish rapidly as the difference between the evaporating and condensing temperature is increased by a reduction in the evaporator temperature. The single stage vapour compression refrigeration system using various refrigerants are limited to an evaporator temperature of -40 0C. Below temperature of -40 0C the either cascade refrigeration sys...

Capacity and efficiency of any refrigerating system diminish rapidly as the difference between the evaporating and condensing temperature is increased by reduction in the evaporator temperature. The single stage vapour compression refrigeration system is limited to an evaporator temperature of -40 C. Below temperature of -40 C the either cascade refrigeration system or multi stage vapour compre...

LEG carriers’ energy efficiency can be increased by improving the boil-off gas (BOG) reliquefaction installation processes in its components. In this study, it is proposed to replace conventional process (CRP) of a carrier “ANTIKITIRA” actual equipped throttle devices with an ejector (ERP) having two-phase ejectors as expansion increase installation. Expansion EV2E and EV2R were replaced system...

We have been using the refrigerator for domestic purposes with various types of refrigeration varied by sizes as we notice that power consumption will be always high and they need a amount time cooling purposes. To overcome this came up an idea changing condenser coil into helically shaped copper tube 190-litre fridge are introduced 40-litre same surface area tubes which may give efficiency les...

The energy crisis in recent years has led to the use of thermodynamic cycles that work based on renewable energies. Low-temperature cycles—such as organic cycles—are suitable strategies for the application of renewable energies. The present study proposes a novel cycle through the integration of a two-stage compression refrigeration cycle with a combined Rankine power and ejector refrigerat...

Abstract--Developing model equation, consider binary mixture of methanolwater system and using a continuous distillation (Stage wise operation cascade), various assumption data are number of stages including rebuilder are 5.Feed plate is 3rd from top. Efficiency Of each stage: 100%. Various runs are operated between various parameters and tabulated data. And model has been developed in the form...

In this study, artificial neural networks (ANNs) have been used for performance analysis of a CO2/NH3 cascade refrigeration system using a data set, obtained from a thermodynamic model implemented in EES. Thermodynamic parameters of the system are estimated in terms of condensing temperature of ammonia, evaporating temperature of carbon dioxide, condensing temperature of carbon dioxide and temp...

Optimal collection and analysis of exhaled breath condensate (EBC) are prerequisites for standardisation and reproducibility of assessments. The present study aimed to assess reproducibility of EBC volume, hydrogen peroxide (H(2)O(2)), 8-isoprostane and cytokine measurements using different condensers, including a newly developed glass condenser. At four points in time, 30 healthy subjects perf...