Cooling fragile quantum systems requires cooling technology. The smallest possible fridge employs a three-level system to autonomously cool the coldest of three reservoirs. authors suggest setup with working fluid composed $N$ collectively coupled qubits effectively implement such refrigerator. collective couplings lead quadratic boost current, $I\ensuremath{\propto}{N}^{2}$.

Household IoT devices are intended to collect information in the home, and interact with each other, to create powerful new applications that support our day-to-day activities. For example, a smart fridge detects when certain groceries are running out, and triggers a shopping console to order fresh supplies. Technical solutions can ascertain that the data used for such functionality are minimiz...

in recent years, there has been an increasing interest in using food additives from natural sources to improve taste and also extend the shelf-life of semi-preserved foodstuffs. the aim of this study was to examine the chemical and microbiological changes promoted by a local marinating process in rainbow trout fillets during chilled storage. fish fillets were immersed in marinades and stored at...

The use of refrigerants with a global warming potential (GWP) greater than 150 is banned in small and medium-sized refrigerators accordance the European F-Gas policy. Therefore, suitability retrofitting an existing refrigerator using low GWP working fluid (R152a), as replacement for usual refrigerant (R134a) that harmful to environment, was investigated experimentally this paper. In study, clos...

We consider absorption refrigerators consisting of simultaneously operating Carnot-type heat engine and refrigerator. Their maximum efficiency at given power (MEGP) is by the product MEGPs for internal The only subtlety derivation lies in fact that cooling refrigerator not limited just refrigerator, but, due to first law, also engine. As a specific example, we simultaneous composed low-dissipat...

Up to now, the production of the cold is undertaking mainly by the classical way of compression refrigerator cycle. The cycle need an electrical power or mechanics expense for the training of the compressor and the C.F.C for their functioning. Most of the C.F.C impoverish the layer of ozone and participate with a considerable manner, to the increase of the sere effect, then to climatic changes....

The objective of this paper was to study the performance of household refrigerator having both air and water-cooled condenser, with 0.06% mass fraction CuO nanoparticle-lubricant mixture and different types of compressor oils. The experiment was done using HFC134a as the refrigerant, CuO nanoparticles, Polyol-ester oil (POE) oil which is used as the conventional lubricant in the household refri...

Fruit and vegetables are regularly stored by consumers in the refrigerator at temperatures that may be well below the recommended storage temperatures. Apart from causing visible symptoms such as watery, sunken areas on the skin, chilling may also induce changes in fruit textural properties and flavour. The aim of this research was to investigate the effect of low temperature storage on tomato ...