热时间常数

提出了干式变压器热时间常数和允许过载时间的计算方法，给出了运用Excel的计算实例。

The method to calculate thermal time constant and allowable overload time of dry-type transformer is presented . The calculating example with Excel is given .

分析了变压器空载试验时铁心温升过程的温度数据，得出试验点温升曲线的数学模型，其表达式中热时间常数为时间的一次函数，而试验点的极限温升可直接求出。

Temperature data in transformer core during heating up under no-load test are analysed , and mathematical model for temperature rise curves at some test points established , thermal time constant in its expression assumed as a linear function of time .

单芯电缆热时间常数的理论计算与试验研究

Theoretical Calculation and Experimental Research on Thermal Time Constant of Single-core Cables

探讨了温差测量对传感器的稳定性、线性及热时间常数的要求。

The stability , linear and time constant of sensors was discussed .

温度传感器的热时间常数及其测试方法

Time Constant of Thermal Sensor and It 's Measuring Method

热时间常数从数秒到数小时不等。

Thermal time constants may range from seconds to hours .

本文将温度传感器视为人体体温测量系统的一个组成部份，讨论了对温度传感器热时间常数的要求以及改善传感器热时间常数的途径。

The temperature sensor is considered as a component of the body temperature measuring system . The requirements for time constant of temperature sensor and the method for the improvement of the time constant are presented .

25μm像元结构得益于较小的热时间常数，该技术使我们能够设计出更高的热隔离性能，从而能以35μm技术为基础开发出25μm技术。

The 25 μ m pixel architecture profits from the low thermal time constant which characterizes our technology , to design a higher pixel thermal insulation and therefore to develop a 25 μ m version from the well mastered 35 μ m technology .

太阳集热器时间常数分析及测试讨论

The time constant of solar collector testing and analysis

一种自动测量热电阻时间常数的方法

Method for Measuring Automatically Time Constant of Thermoresistance

热电阻时间常数的测试

Determination of the time constant of thermoresistance

该文在一阶系统基础上讨论了时间常数，提出了在集热器时间常数测量基础上，判定集热器与一阶系统的符合程度的方法。

The time constant of the solar collector was discussed based on the first order system .

理论计算表明，可动微镜热响应时间常数为4.45×10-4s。

Theoretical calculation indicates that the time constant of thermal response is 4 45 × 10 - 4 s.

在有关试验测量所得数据基础上，计算了紊流条件下的电弧弧柱热传导时间常数特性。径向滑动轴承紊流相似分析研究

It offers a new calculation for analyzing arc plasma motion under turbulent condition . Similarity Analysis of Journal Bearing Characteristics on Turbulent Condition

基于虚拟仪器的热电阻动态时间常数测试系统

Thermal-resistance Dynamic Time Constant Auto-testing System Based on Virtual Instrument

在自然辐照条件下测试了内插管式空气集热器的时间常数、瞬态效率，得到了不同流量下的瞬态效率方程。

The time constant and instantaneous efficiency of the feed-tube solar air heater were tested on the solar irradiance . The equation for instantaneous efficiency was obtained at the different flow rate .

通过其温度测量的数学模型及其实际应用，提出了基于对流换热系数的时间常数在线补偿温度测量的动态误差。

In terms of the mathematics model and the practical application , an online compensation of temperature measurement has been brought forward in the paper based on the time constant of the convective heat transfer coefficient .

减小热电偶的长度可以减小热堆内阻和时间常数。

The resistance and response time can be reduced by shortening the length of the thermocouples .

被冻结的分子主链段偶极热松弛活化能随结晶度增大线性减小，热松弛时间常数则随结晶度的提高而呈指数增大。

The activation energy of thermal relaxation of dipoles for main-chain segmental motion in amorphous region was decreased linearly and the time constant of dipolar thermal relaxation was increased exponentially with increasing of crystallinity .

该文对该类集热器热性能评价方法进行了研究，并对集热器的时间常数、热延迟常数、角系数修正因子及瞬时热效率的实验方法进行了初步的实验研究。

A study on the thermal performance of the solar air heater is presented . The methods to test the time constant , resident time , incident angular modifier and instantaneous thermal efficiency are suggested .