液化天然气船液货翻滚及其预防

分析了液化天然气（ＬＮＧ）船液货分层和翻滚的机理及特性、提出ＬＮＧ安全贮运的技术和结构措施 。     

抗强冲击特殊低温储罐内支承结构传热分析

本文采用有限元法对特殊低温储罐内支承结构进行传热分析,建立了左右支承结构在有限元传热分析模型,得到了相应的温度场和热流分布,计算出通过内支承的总漏热量,并对影响漏热量的几个主要因素进行了计算分析。     

安静型潜艇的AIP动力系统及其废气管理

介绍了常规动力潜艇推进系统及不依赖于空气的动力系统(AIP),比较了闭式循环柴油机、斯特林发动机、闭式蒸汽轮机装置以及燃料电池等4种基本AIP系统各自的特点,分析了自主式水下动力系统废气排放对潜艇性能,尤其是隐蔽性的影响,最后阐述了AIP系统废气的吸收、压缩式处理方法。     

PREDICTION OF VISCOSITIES OF LNG MIXTURES BY TWO CORRESPONDING STATES PRINCIPLES

ＰＲＥＤＩＣＴＩＯＮＯＦＶＩＳＣＯＳＩＴＩＥＳＯＦＬＮＧＭＩＸＴＵＲＥＳＢＹＴＷＯＣＯＲＲＥＳＰＯＮＤＩＮＧＳＴＡＴＥＳＰＲＩＮＣＩＰＬＥＳ＊ＺｈａｎｇＬｕ（张路）ＧｕＡｎｚｈｏｎｇ（顾安忠）（ＩｎｓｔｉｔｕｔｅｏｆＲｅｆｒｉｇｅｒａｔｉｏｎ＆Ｃｒｙ...     

Thermal structure of glass fiber reinforce plastic support structure

The assembled form of thick-wall glass fiber reinforced plastics (GFRP) tube and OCr18Ni9 ansteniticstainless steel pipes was designed as the radius thermal-insulating and load-supporting structure in cryogenicvessels. In order to study the thermal leakage and gap changes on the support structure, as well as radiustemperature and stress distribution on GFRP tube, an experimental investigation has been taken. The resultsindicate that the support structure is proved to fit well as thermal-iusulating and load-supporting part in cryo-genic vessels, furthermore has high security during cryogenic applications.     

低温容器稳压供气研究

本文研究了低温容器稳压供气原理,建立了挤压式稳定供气系统设计计算步骤并编制了计算机程序,可以很方便地计算所需水浴式盘管汽化器及增压器的传热面积,供气温度及初始自增压规律,计算结果与试验结果相符合,具有较好的工程计算应用价值。     

Simulation and Comparative Study of CO2 Capture in Underwater LSS Using HYSYS

Long-duration manned submersible missions require advanced life support systems (LSS) that can regenerate air, water and food. This study presented two CO_2-capture methods used in LSS, CO_2 removal with diethanolamine (DEA) and cryo-freezing with liquid oxygen. Both processes were modeled and simulated with HYSYS simulator. The performance of the two types of module was compared, and the results showed that the latter could be advantageous over the former in specific power, facility scale, operation reliability and safety. Economic evaluation suggested the latter cost only half of the former. Cryo-capture module could be an alternative for underwater LSS because of its efficiency and compactness.     

Experimental Investigation of a Single-Stage Four-Valve Pulse Tube Refrigerator

In order to simplify the structure of the cold end of the pulse tube refrigerator (PTR) and have a better utilization of the cold energy of the system, a one-stage four-valve pulse tube refrigerator (FVPTR) with an "L" type pulse tube structure and two orifice valves at the hot end of pulse tube has been constructed. Verification experiments show that the two orifice valve structure performs better than one orifice valve structure. A lowest temperature of 67.5 K was obtained at a frequency of 2.5 Hz under a system average pressure of 1.5 MPa with 200 mesh bronze screens as regenerator material, 80 mesh copper screens as stuffing material of heat exchanger. Due to the difficulty in manufacturing the thin "L" type pulse tube, the wall thickness of the pulse tube in the experiment was relatively difficult for us to reach 0.5 mm as that of the ordinary pulse tube, which resulted in relatively big system loss and affected the minimum temperature of the system to some degree.     

THERMODYNAMIC STUDY OF HIGH-PRESSURE ADSORPTION OF METHANE AND HEATS OF METHANE ADSORPTION ON MICROPOROUS CARBONS

IntroductionNatural gas is considered as an alternative au-tomotive fuel.In fact,a considerable number ofvehicles worldwide have been converted to operateon compressed natural gas.Butmobile applicationsof NG atpresentare limited mainly due to its limit-ed driving range as a result of its low volumetricenergy density.At NTP the volumetric energydensity,and hence the mileage per unit volume ofthe fuel tank,of NG is only 0 .1 2 % of that ofgasoline[1] .Hence,the suitability of NG for vehic-ul…     

Schemes for Producing 1.8 He Ⅱ and the Prediction of the Pumping Speed for the Method of Vacuum-Pumping

Cryogenic ground supporting equipment (CGSE) developed for international cooperation scientific experimental item AMS-02 is the ground supporting and cooling system, which will complete the cooling process of the superconductor of AMS-02 from ambient temperature to 1.8 K. Obtaining 1.8 K He Ⅱ by vacuum-pumping is discussed in detail and compared with the other three schemes. The results show that the scheme of vacuum-pumping not only could meet the requirement of the project much better but also has higher reliability compared with other schemes. To select the vacuum pump, the energy conservation model is presented according to the experimental system of CGSE. Therefore, the pumping speed is also determined.