Convection heat transfer (including natural and forced convection) ofelliptical tubes had been studied systematically. The experienced formula of heattransfer had been given. It presents fin efficiency of rectangular finned elliptical tubeand optimized fin geometry (i.e. length/width ratio) and fin spacing for rectangularfin.

A reconstruction algorithm, the simultaneous algebraic reconstruction technique(SART), proposed by Anderson (1984) is discussed. SART can be applied to optical tomographyto determine quantitatively or to reconstruct the 3-D asymmetric temperature distribution or therefractive-index field of a transparent medium. With two orthographic-view directions and limitedview- ranges, the reconstruction speed and the accuracy of the SART are adequate. By the use oforthographic double-beam holographic interferometry with double exposures and the SART, thetemperature distribution of a 3-D asymmetric heat air-fiow field can be successfully andquantitatively reconstructed. (12 refs.)

从理论上分忻了影响沸腾传热特性的各种因素，以间隙为l~2mm的环形狭缝通道中流动沸腾传热的实验数据为基础，给出了三种计算环形狭缝中流动沸腾传热的准则关系式。分别将计算结果与实验数据进行了比较，找出了影响狭缝中沸腾传热的关键因素，确定了可以用来预测该实验范围内的流动沸腾传热的准则关系式。

引入三个形状因子和一个体积参数之后，对二维轴对称几何形状下的内部和外部接触熔化过程进行了统一的数学分忻，得到接触熔化速率的一般表达式并分别与六种典型几何形状下现有的分忻结果相对比，对该表达式的正确性进行了验证。此外，对其局限性进行了简要讨论。

采用单颗粒动力学模型及自行研制的计算机程序对波形板汽水分离器中液滴的运动轨迹进行了数值模拟计算，通过对波形板中液滴轨迹的数值模拟可以为优化波形板结构提供理论依据。

介绍了空调列车车厢内CO2浓度的组成，并对车厢内CO2浓度与新风量、新风能耗之间的关系进行了分忻，指出即要满足乘客的舒适性要求，又要达到节能的目的，必须合理控制车厢内CO2的浓度，为今后列车空调的设计和运行提供了重要依据。

The boiling heat transfer experiments have been carried out in vertical narrow- annularchannels with pure water. A two-dimensional homogeneous turbulence model of boiling flow- hasbeen developed and solved numerically to yield pressure gradient, and velocity, thermal andturbulence fields, together with local heat transfer coefficient along the length of the tube.Predictions are compared with the data of experiments and agreed well with it. The model resultsshow- that the heat transfer coefficient increases as the gap size decreases in annular channels. Thismodel can be used to predict heat transfer of boiling flow- in narrow- channels.

The paper, "Heat pumps as a source of heat energy for desalination of seawater", waspublished in Desaliraation [Vol 139, 2001 ] in the paper, heat pumps using agent R12 or waterand vapor were introduced to be used as a sourceof heat energy for desalination The cyclicprocesses of heat pump were illustated in T-S and P-H thelmodynamic diagrams under theconditions of corlderlsation temperature at 120℃ and an evaporative temperature of 20℃, butthere are some questions that need to be discussed First, thermodynamic diagrams of thetranscrltlcal cycle of heat pumps usirng agent R12 are given Second the ratio betweenmassnowsof the water vapor and agent R12 is discussed and the heat balance equations of desalination aregiven Third, calculations from a 5 t/d desalination plant are given as an example