Results 61 to 70 of about 678 (227)

A Leakage Detection Method for a Vapor-Compression Refrigeration System Based on System Modeling

Zhileng xuebao
Refrigerant leakage from a refrigeration system not only degrades the system performance and increases energy consumption but also aggravates environmental hazards and safety risks because of the high global warming potential or flammability of many ...
Gao Zanjun, Jiang Ning, Kong Jiaqi, Lu Yongjie, Yang Jialiang, Yan Yuhao, Han Xiaohong   +6 more
doaj  

Experimental Study on Concentration Distribution and Indoor Safety of R32 Refrigerant Leakage Location

Zhileng xuebao, 2022
In this study, an experiment was conducted to compare and analyze the concentration diffusion law of R32 gas in different planes ofthe testedroom following leakage from different positions of 3.6 kg R32 refrigerant. The safety impact in the room when the
Jin Wufeng, Xue Tandong, Yuan Xiaoyong, Wang Zhiqiang   +3 more
doaj  

Pulsed Light Technology in Food Safety and Preservation: Principles, Applications, and Future Directions

Food Chemistry International, EarlyView.
Pulsed light technology uses short high‐intensity broad‐spectrum flashes (200–1100 nm) to inactivate microbes via DNA damage. It preserves food quality, extends shelf life, and works on liquids, meats, and produce, often combined with other hurdles for enhanced efficacy.
Abdul Mueez Ahmad, Laiba Younas, Fatima Javed, Rimsha Amjad, Muhammad Tayyab Raza   +4 more
wiley   +1 more source

Experimental evaluation of a high temperature cascade heat pump based on refrigerant charge

Case Studies in Thermal Engineering
Global energy demand continues rising with technological advancement. Renewables like solar and wind are increasingly adopted, yet heating/cooling systems responsible for 40 % of building energy use require urgent efficiency improvements.
Xuelian Ma, Yue Fang, Qian Dai, Zhonglu He, Junlan Yang, Jingmeng Liu, Hongfu Zou   +6 more
doaj   +1 more source

Comprehensive Review on Advancements in Food Preservation Technologies for Quality and Sustainability

Food Chemistry International, EarlyView.
Preservatives limit microbial development, oxidation, and enzymatic degradation, resulting in better food quality and extended shelf life. Classified as natural, synthetic, or biological, each preservative has distinctive attributes and modes of action. Growing preference for natural preservatives aligns with clean label trends.
Monica Suresh, Arun Meyyazhagan, Haripriya Kuchi Bhotla, Manikantan Pappuswamy, Balamuralikrishnan Balasubramanian   +4 more
wiley   +1 more source

Bioelectrochemical single reactor for reductive and oxidative removal of trichloroethylene from contaminated groundwater

Journal of Chemical Technology &Biotechnology, EarlyView.
Abstract BACKGROUND Chlorinated aliphatic hydrocarbons such as trichloroethylene (TCE) are persistent groundwater contaminants due to improper disposal and low biodegradability. This work presents an innovative bioelectrochemical system for the integrated reductive/oxidative removal of TCE from contaminated water, implemented in a single tubular ...
Maria Presutti, Geremia Sassetto, Angela Marchetti, Giulia Simonetti, Marco Petrangeli Papini, Marco Zeppilli   +5 more
wiley   +1 more source

Diffusion Distribution Characteristics and Flammable Areas of Refrigerants Encountering Obstacles in Confined Spaces

Zhileng xuebao
Refrigerants exhibit different diffusion and distribution characteristics when they encounter obstacles after leaking into confined spaces. The influence of the thermophysical parameters of refrigerants on their diffusion and distribution after ...
Li Yalun, Zhou Peixu, Ye Gongran, Zhuang Yuan, Yan Yuhao, Ouyang Hongsheng, Han Xiaohong   +6 more
doaj  

Air leakage in refrigerated vans: report of confirmation tests conducted with the prototype air leakage test set [PDF]

, 1978
The objective of the work described was to evaluate the utility of the Prototype Air Leakage Test Set constructed for the United States Department of Energy under this contract, and to compare the air leakage data obtained by use of the Test Set to that obtained by use of three different, existing test equipments at three manufacturers of trailers and ...
openaire   +2 more sources

Stripping‐based approach for the recovery of volatile fatty acids from anaerobic digestion digestate: preliminary experimental investigations and modelling

Journal of Chemical Technology &Biotechnology, EarlyView.
Abstract BACKGROUND Volatile fatty acids (VFAs) are widely used across industries: as intermediates in chemical production (e.g., solvents and polymers), in pharmaceuticals and cosmetics, and as preservatives and health‐promoting additives in food and animal feed. Emerging applications also include bioplastics, bioenergy, and biotechnology.
Simeone Chianese, Angelo Fenti, Giovanni Falco, Valentina Innocenzi, Marina Prisciandaro, Pasquale Iovino, Dino Musmarra   +6 more
wiley   +1 more source

Effects of mixed microbial fermentation on the quality and metabolite profile of cassava leaf feed based on untargeted metabolomics

JSFA reports, EarlyView.
Abstract Background Cassava leaves are a major byproduct of cassava processing and have a low utilization rate. In this study, Lactiplantibacillus plantarum, Saccharomyces cerevisiae, and Bacillus subtilis were used for solid‐state fermentation of cassava leaves to improve their feed quality. Results After 48 h of fermentation, the feed pH decreased to
Mengjun Zhou, Dongxiu Wang, jie Zhang, Jian Chen, Xuding Wen   +4 more
wiley   +1 more source