liquefied natural gas (LNG) is the most economical way of transporting natural gas (NG) over long distances. Liquefaction of NG by using vapor compression refrigeration system requires high operating and capital cost. Due to lack of systematic design methods for multistage refrigeration cycles, the conventional approaches of determining optimal cycle configuration are mostly based on trial-an...

Before the development of controlled hypothermia as a therapeutic measure in man little was known of the effects of prolonged lowering of the body temperature in the human subject. The pioneering work of Smith and Fay (1940) and of Talbott (1941, 1944) in the use of refrigeration for the treatment of malignant disease, schizophrenia, and intractable pain has found little support and the techniq...

This article presents the magnetic refrigeration technology that is based on magnetocaloric effect, heating or cooling of a material when applied field changes. The first part paper shows an introductory study evolution this over years, continuing with presentation regenerator model, which composed two heat exchangers parallel plates material, gadolinium and are separated by transfer agent flow...

This paper presents a thermoeconomic analysis aimed at the optimization of a novel zero-CO2 and other emissions and high-efficiency power and refrigeration cogeneration system, COOLCEP-S (Patent pending), which uses the liquefied natural gas (LNG) coldness during its revaporization. It was predicted that at the turbine inlet temperature (TIT) of 900 C, the energy efficiency of the COOLCEP-S sys...

Direct expansion (DX) refrigeration technology is almost exclusively used in multi-temperature transport refrigeration systems. Multi-temperature systems use up to three evaporators, requiring large refrigerant charges and system pressure control to operate over a wide range of set-point conditions. Despite incremental design improvements over the past decade, environmental and control issues c...

A small refrigeration plant, for teaching refrigeration theory, used a control console built to traditional design guidelines: one output in the display for each sensor in the plant. This style of console is notorious for inducing high cognitive loads on operators and for displaying redundant data. Often the high cognitive load is the result of inconsistency between the intent for displaying th...

AIM The present study was conducted to determine efficacy of edible coating of carrageenan and cinnamon oil to enhance the shelf life of chicken meat stored under refrigeration conditions. MATERIALS AND METHODS Chicken breast was coated with carrageenan and cinnamon oil by three methods of application viz., spraying brushing and dipping. The coated meat was evaluated for drip loss, pH, thioba...

Series production of R134a compressors started in 1990. 200 compressors, from the very first series, were built into cabinets placed in an apartment house in Denmark. Cabinets with R12 compressors were placed in the same apartment house as well. The cabinets have two separate cooling systems; one for a cold cabinet and one for a freezer. 10 running cabinets were called back for analysis; 7 cabi...

Background: There is a demand for natural food preservatives as an alternative to artificial chemical compounds. Under refrigeration conditions, the paneer has shelf life of 7-9 days. The application can help solve problem its short shelf-life. present study was conducted evaluate four types, S0, S1, S2 and S3 samples. effect storage period on paneer, control treated with brine (10% w/v), hydro...

Simultaneous production of fresh water and refrigeration are often required, e.g. in warm-climate waterdeficient regions, and this study is a proposal and analysis of an efficient way of producing both of them by consuming mainly low-grade heat. After introducing the configuration choice methodology, a combined refrigeration and water system, ARHP–MEE (absorption refrigeration heat pump and mul...