能量转换效率

According to the principle of energy conversion and conservation in fuel combustion, the study is made to automatically control boiler combustion and to supervise boiler thermal efficiency real time on line. Representing fuel caloricity signal and on line thermal efficiency signal with the flame parameter, the combustion automatic control system has been successfully put into operation.

引 言在电力工业生产中，发电厂锅炉消耗大量的燃料，如何提高锅炉运行效率以节约能源，是人们长期力求解决的课题，从燃料燃烧的能量转换和守恒原理出发，对锅炉燃烧自动控制系统和锅炉热效率在线实时监测进行了一系列的探讨，找到了一个用火焰参数代表燃料发热量的能量信号和在线热效率信号。

Fuel cell is a new energy conversion device featuring high efficiency and low pollution. Because its electrical efficiency can achieve 50%-60%, the foreground is very good, the research and development of fuel cell have been emphasized in many countries now.

燃料电池是一种高效低污染的新型能量转换装置，其发电效率可达到50%~60%，有非常好的发展前景，目前很多国家都很重视对燃料电池的研究开发工作。

Further, heat dissipation and the ratio of energy transition of the power distributive circuit were calculated and analyzed.

并对能量转换的效率和发热量设计进行了计算和分析。

At the same time, the relative detection efficiency and energy conversion coefficient were calculated with Monte-Carlo method.

同时，利用蒙特卡罗方法对长计数器探测效率及其相应的能量转换系数进行模拟计算。

On theoretical grounds, the maximum efficiency of energy conversion is believed to be between 25% and 30%. There is an upper limit, and it has been achieved in certain plants for brief periods of time under optimal conditions.

从理论上来说，能量最大转换效率被认为能达到25％-30％，有一个上限，并且在适宜环境条件下，某些植物在较短时间内达到了此上限。

Solar chimney ; cleaner energy ; energy conversion ; efficiency

太阳能烟囱；清洁能源；能量转换；效率

Piezoelectric transformer is a kind of promising solid electronic component. It is characterized by high voltage gain, high power density, simple structure, small size, non- electromagnetic noise and being flam retarded.

压电变压器是一种很有发展前景的固体电子器件，有高转换效率、高能量密度、结构简单、体积小、无电磁噪声及不可燃烧等特点。

The energy exchange analysis indicates that gliding energy efficiency is dependant on the lift drag ratio of the wings and gliding angle of the hull. Through the calculation in this thesis, it can be concluded that enhancing the lift drag ratio can largely improve the energy efficiency when the gliding angle is in the range of 10to 40 degree, and when lift drag ratio is fixed, there exists a special gliding angle for the maximum of the efficiency, which provide theoretical basis for the design of operating parameters.

通过能量转换分析，得出滑翔机航行效率由机翼升阻比和机身航行角决定，航行角在10~40度范围内，增大机翼升阻比可显著提高航行效率；并由计算得出，在升阻比一定的情况下，总存在一个使滑翔机航行效率达到最大的航行角度，为样机工作参数设计提供了理论依据。

The USM is a kind of new electrical motor which develops in recent 20 years, it broke through the traditional concept of electrical motor. It didn"t have the electromagnetism winding and the magnetic circuit, and it didn"t uses the mutually electromagnetism to transform the energy, moreover, the volume of electrical motor is small, the weight is light, the transfer efficiency is high. For it was so small, so light, and so thin, it have begun to use on automobile. But the usage of superconductivity electrical motor is still in the experimental stage at present. The main reason is that the super conductivity material has not realized the high temperature, but with the development of technical, the possibly uses of superconductivity electrical motor in the big horsepower like automobile generator and on actuation electrical motor causes the electrical machinery to be smaller in volume, lighter in weight, and higher in efficiency.

超声波电机是近二十年来发展起来的一种新型电机，它突破了传统电机的概念，没有电磁绕组和磁路，不用电磁相互作用来转换能量，体积小、重量轻、转换效率高，很小、很轻、很薄，在汽车上已经开始使用；超导电机的使用目前还处在实验阶段，这主要的原因是超导材料还没有实现高温化，但是，随着技术的发展，超导电机可能使用在汽车的起动机和驱动电机这些大马力上，使原有的电机体积更小，重量更轻，效率更高。

Solid oxide fuel cells are an environmentally clean and efficient source of energy.

固体氧化物燃料电池是一种能量转换效率高和环境友好的新能源装置。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。