Results 1 to 10 of about 6,253 (68)

Measurement of Refrigerator Cooling Capacity Loss and Improvement of Its Thermal Insulation

open access: yesZhileng xuebao, 2017
In the present paper, the cold loss of a fridge when unloaded was studied through an experiment, and an improvement was proposed. First, the heat transfer process between the fridge interior and the external environment was simplified into a one ...
He Peng   +3 more
doaj  

Theoretical and Experimental Study on the Effects of Depressurization Process on the Ice Nucleation of Supercooled Water

open access: yesZhileng xuebao, 2017
The control of ice nucleation temperature during the freezing stage has significant influences on quality uniformity of freeze-dried products and drying rate of later stages.
Huang Gensheng   +3 more
doaj  

Experimental Study of Environmental Parameters on the Performance of Evaporative Cooling Heat Exchanger

open access: yesZhileng xuebao, 2017
The experiment rig of evaporative cooling heat exchanger is set up for experimental research and the environmental parameters were controlled in enthalpy difference laboratory in this paper.
Shen Jiang   +3 more
doaj  

Physical Property Models of R32 and POE and PVE Oil

open access: yesZhileng xuebao, 2017
Accurate calculation of refrigerant and oil properties is the foundation to numerical optimization of compressor. The physical properties calculation models of R32 saturation liquid, saturation gas, superheated gas and lubricating oil POE and PVE in the ...
Shi Hongyan, Wu Jianhua
doaj  

Study on the Influencing Factors of Cold Storage Incubator with Al2O3-H2O Nanofluids by Orthogonal Method

open access: yesZhileng xuebao, 2017
In order to improve the effect of cold storage in box with nano fluid, the low density sponge is used to adsorb nano particles and the thermophysical properties of the coolant is changed. The carrots are used as the experimental object in the experiments
Di Qianqian   +3 more
doaj  

Experimental Study on Characteristics of Energy Storage Defrosting and Conventional Defrosting for Cascade Air Source Heat Pump

open access: yesZhileng xuebao, 2017
Based on the frosting and defrosting problems of cascade air source heat pumps (CASHPs) during heating operation in the cold area in winter, a novel thermal energy storage CASHP defrosting system with a thermal accumulator is proposed.
Qu Minglu   +3 more
doaj  

Experimental Research of Dual-source Heat Pump Unit Based on Solar Photovoltaic and Photothermal Component

open access: yesZhileng xuebao, 2015
Based on the solar photovoltaic-thermal integrated system, we designed a dual-source, i.e., solar photovoltaic-thermal and air source, heat pump unit.
Chen Jianbo   +3 more
doaj  

Analysis on Cooling Capacity and Anti-condensation Ability of Improved Chilled Radiant Panel Containing Thinner Air Layer

open access: yesZhileng xuebao, 2015
In order to improve the performance of chilled radiant panel(CRP) containing air layer, we firstly established a mathematical heat conduction model of CRP with air layer and evaluated its reliability. The deviation of model and experimental results about
Zhang Shunbo   +3 more
doaj  

Experimental Investigation on the Effect of the Second Stage Evaporation on the Transcritical CO2 Ejector Expansion Refrigeration System

open access: yesZhileng xuebao, 2015
An ejector expansion refrigeration cycle with two stage evaporation can not only regulate the exit quality of ejector but also improve the coefficient of performance of system. This experimental study presents the effect of the second stage evaporator on
Zheng Lixing, Deng Jianqiang, He Yang
doaj  

Field Test Study on the Interactions Between "Cold Wet Island Effect" and Frosting-Defrosting Phenomenon for Air Source Heat Pump Array

open access: yesZhileng xuebao
With the expansion of air source heat pump (ASHP) heating systems, ASHP arrays have become the main arrangement for medium to large-scale heating projects.
LIANG Shimin   +6 more
doaj  

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