Results 11 to 20 of about 27,924 (214)

Theoretical Simulation and Experimental Study on Effect of Vacuum Pre-Cooling for Postharvest Leaf Lettuce [PDF]

open access: yesJournal of Food and Nutrition Research, 2014
The effect of vacuum pre-cooling process on leaf lettuce was a complex process of heat and mass transfers. Based on the properties of leaf lettuce in vacuum pre-cooling process, an unsteady computation model was constructed to analyze the factors affecting vacuum pre-cooling.
Enhai Liu, Xiaobo Hu, Shengyong Liu
openaire   +1 more source

Effects of sublimation temperature on cell microstructure of pear melon during vacuum freeze drying

open access: yesShipin yu jixie, 2023
Objective: This study aimed to obtain optimal sublimation temperature of pear melon cells. Methods: The pre-freezing cooling rate and vacuum pressure were selected by optimization method to be 25 ℃/min and 10 Pa, respectively, based on cryogenic ...
TIAN Jinjin   +5 more
doaj   +1 more source

Effect of Vacuum Pre-cooling on Quality Properties of Broccoli after Harvest Compared with Other Conventional Cooling Methods [PDF]

open access: yesJournal of Food Science and Engineering, 2012
Vacuum pre-cooling technology has potential to be used in post-harvest storage of vegetables by removing field heat rapidly. In the current study, the efficiencies of different cooling methods (vacuum cooling, cooling water and cold room) and the quality properties of broccolis with pre-cooling treatments were compared.
null Tian Ding   +4 more
openaire   +1 more source

Performance of solar adsorption cooling system with internal finned vacuum tube bed

open access: yesCase Studies in Thermal Engineering, 2022
Aiming to improve the performance of the solar adsorption cooling system using the silica gel-water as the working pair, a series of fin-enhanced vacuum tube bed have been developed and tested experimentally.
Zepeng Wang   +4 more
doaj   +1 more source

Development of Pre-hardened and Ultra-thick 1.2311 Steel Plate Used for Plastic Mold Steel [PDF]

open access: yesTeshugang
Based on domestic and abroad market demands,this article introduces the development process of pre-hardened and ultra-thick 1.2311 steel plate used for plastic mold steel.Experimental study on continuous phase transformation behavior of 1.2311 steel was ...
Han Fei   +3 more
doaj   +2 more sources

Evaluation of the functional acceptability of the ITER vacuum vessel

open access: yesNuclear Fusion, 2022
The International Thermonuclear Experimental Reactor (ITER) vacuum vessel (VV) is one of the critical components of the ITER tokamak fusion reactor. The first sector of the ITER VV was delivered to ITER Organization in 2020, and it is ready to assemble ...
Hokyu Moon   +3 more
doaj   +1 more source

Manufacturing and testing of flat-type divertor mockup with advanced materials

open access: yesNuclear Engineering and Technology, 2023
During reactor operation, the divertor must withstand unprecedented simultaneous high heat fluxes and high-energy neutron irradiation. The extremely severe service environment of the divertor imposes a huge challenge to the bonding quality of divertor ...
Nanyu Mou   +6 more
doaj   +1 more source

Study on Optimization Matching of Catcher and Vacuum pump in Vacuum cooling

open access: yesZhileng xuebao, 2006
The matching of the catcher and the vacuum pump determines the pre-cooling quality during vacuum cooling processes.With the assumption of the water vapor resulted from the vacuum cooling to be ideal gas,the energy consumptions of the catcher and the ...
严雷, 刘斌, 邹同华
doaj   +2 more sources

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