Results 1 to 10 of about 257 (75)
Zhileng xuebao, 2011 In order to solve the problem of cooling nonuniformity in forced air pre-cooling for vegetables and fruits,five vent-hole types were designed,and a physical model and a numerical model were established.The commercial software FLUENT was employed to ...
doaj +2 more sources
Research on Efficiency Evaluation of Multi-functional Heat Pump
Zhileng xuebao, 2011 The absence of evaluation standard seriously constraints the development of multi-function heat pump (MHP) in China. First, the basic principle of MHP is introduced briefly, and the current testing standards are discussed in detail based on different ...
Jiang Mingliu +3 more
doaj
Zhileng xuebao, 2011 The response surface method is applied to design the heat exchanger with decreasing tube diameter, for the traditional design methods are not suitable for the optimization of the performance and cost of heat exchanger simultaneously.
Wu Zhaoguo +5 more
doaj
Zhileng xuebao, 2010 The absorption heat pump technology has been an important building energy-saving technology due to its effective utilization of low-grade heat energy and electrical energy saving.The absorber performance is mainly determined by heat transfer and mass ...
Sun Jian Hu Peng Fu Lin
doaj
Experimental Study on Air-conditioning Plant with Space Radiative Cooling
Zhileng xuebao, 2010 In this study,the principle and the method of radiative cooling were stated.The emissivities of black carbon powder,NaCl crystal,TiO2 powder,PET film and PTFE film were measured using an infrared emission detector.The transmittance of LDPE film to ...
Rui Zhigang Zuo Ran
doaj
Two-Fluid Model for Air Supply Opening of Air Curtain in Vertical Display Case
Zhileng xuebao, 2007 Considering the characteristics of linear grill which is widely used in vertical display cases, a two- fluid model for the air supply opening was set up.
Yu Kezhi, Ding Guoliang, Chen Tianji
doaj
Impact of Refrigerant Charge on Mobile Air Conditioning System with New Heat Exchanger
Zhileng xuebao, 2011 The industry is always making efforts to reduce the R134a charge with new heat exchanger,which results in the decrease of direct emissions of R134a to the environment.The refrigerant charge in conventional mobile air conditioning system and the mobile ...
doaj
Research and Applications of Pressure Test for Vapor Compression Refrigeration System
Zhileng xuebao, 2011 The observation of leak detection on site for vapor compression refrigeration system showed that foamy leaks might be found by foamy test,even when maintaining pressure test met the requirement of national standard GB50274-98 code for construction and ...
doaj
Zhileng xuebao, 2006 The influences of ratio of piston displacement(RPD),volumetric efficiency,and indicated efficiency of two-stage compressors on refrigerating capacity were analyzed to find a simplified method to calculate refrigerating capacity of a two-stage compression
Wu Jiying
doaj
Investigation on Materials Compatibility Using Nanoparticles Additive in Refrigerating System
Zhileng xuebao, 2006 The compatibility of refrigerating system materials with HFC134a/mineral oil(MO) and HTR02/mineral oil appended with Nanoparticle TiO_2 and SiO_2 was experimentally studied using the alternative materials compatibility research method accepted ...
Bi Shengshan +3 more
doaj