本文针对新型永磁外转子爪极电机的发热问题，在对该种电机的特殊结构简单介绍的基础上，首先对电机内部的热源及热路进行了分析，建立了该种电机的等效热路模型，并导出了模型中各部分热阻的计算式；然后研制开发了该种电机的热路分析仿真程序，对电机运行工况下的发热及温升情况进行了仿真研究；最后通过样机实验平台，对该样机进行发热实验。实验结果与理论分析的一致性，验证了等效热路模型的正确性，为该种电机的深入研究奠定了理论和技术基础。

In order to study thermal situation of a novel claw pole machine with outer permanent magnet rotor ( CPMPM) , on the basis of introducing its special structure briefly , the equivalent thermal circuit model of this machine was built up , and then calculation equations of thermal resistance for every parts of the machine were derived.Thermal analysis simulation procedure of this kind of machine was developed and the simula -tion research for thermal and temperature rise of this machine was done under the operating conditions.Fi-nally, the thermal test for this prototype was completed by means of experiment platform; Correctness of e-quivalent thermal circuit analysis model was verified through the comparison of experiment result and theory analysis, and also laid the foundation of theory and technology on further research on this kind of machine.

通过流量标准装置模拟3种户用热量表(机械式、U型声路超声式和W型声路超声式热量表)在7种典型的现场安装方式下的流量测量特性。结果表明:若在热量表的入口和出口处分别加4D直管段,则热量表流量测量误差满足国家检定规程的要求;机械式热量表应水平安装,超声式热量表可水平安装或竖直安装;热量表出口弯头会增大流量测量误差。

The flow measurement characteristics of three types of household heat meters (mechanical meter,Utype and Wtype ultrasonic meters)installed under different conditions were simulated to show that,addinga 4D straight pipe at heat meter’s inlet and exit can make its flow measurement error meet the requirements ofthe national verification regulations;and the mechanical heat meter should be installed horizontally togetherwith horizontal or vertical installation mode for ultrasonic heat meters,and the elbow at the heat meter exit canincrease flow measurement error.

电缆敷设方式决定电缆的载流量。分析目前常见的几种电缆敷设方式的环境热阻计算方法和等值热路图，并给出了不同敷设条件下的电缆载流量。

The cable laying way decides the current-carrying capacity. We analyze the methods of environment thermal resis tance and the equivalent hot road map based on some common cable laying way,and obtain the current-carrying capacities in different placing conditions.

为了对LHT-100霍尔推力器提出热设计优化措施，采用有限元仿真软件进行LHT-100霍尔推力器的稳态、瞬态及空间在轨环境模拟热分析研究，并通过热平衡试验进行了结果比对。分析及试验结果表明，处于工作状态时霍尔推力器的高温部件主要是放电腔、阳极和导磁底座，而受高温影响薄弱部件内线圈、气路组件的温度则分别达到了约401～421℃和141～381℃。热设计优化建议为，在放电腔与内线圈之间增加独立热屏结构后可以有效降低内线圈温度约80～90℃，在阳极气路组件上存在的热应力会是影响霍尔推力器可靠性的重要因素，需要在热设计中得到充分考虑。

In order to optimize thermal design of a LHT-100 Hall thruster, the thermal behaviour of a LHT-100 Hall thruster was described. Warm-up time,steady-state temperature distribution and space environ?ment simulation for the thruster were simulated by the finite element analysis software. The simulation results were compared with thermal-balance experiment results,which show the high temperature components are dis?charge chamber, anode and magnetizer, and the thermal weakness components include inner circuitry and an?ode insulation parts, whose temperature are up to 401~421℃ and 141~381℃. Thermal design optimization measures suggest that increasing heat shield between discharge chamber and inner circuitry will reduce the inner circuitry temperature about 80~90℃,and thermal deformation occurred in the anode insulation parts is the core factor which influences the reliability of the Hall thruster,which should be considered in thermal design.

基于一台热泵风管机重新设计了饱5mm管径蒸发器和冷凝器，对原换热器和饱5mm管径换热器的性能、成本、分路设计进行分析研究。结果表明，采用饱5 mm管径换热器能够提高空调的性能，降低开发成本。设计饱5 mm管径换热器时，应在流程长度和分路数目之间进行平衡优化，单分路流程长度可控制在4～6m。

Evaporator and condenser using ?5mm diameter tube are designed based on a ducted heat pump air-conditioner, and research on capability, cost and circuit design is comparatively performed with original diameter tube heat exchanger and?5mm diameter tube heat exchanger.Results show that, The capability of unit with?5mm diameter tube is improved and the price is reduced.Optimization should be taken between path length and circuit a-mount, and the optimal path length is designed from 4 to 6 meters.