Essays on Thermocouple

Thermal conductivity is defined as a material’s property to conduct heat. Heat transfer across materials occurs in materials that have lower thermal conductivity and transfers faster in materials with high conductivity. It is important to determine the thermal conductivity of materials since different materials are used for different applications. For instance, materials with high conductivity are more efficient when they are used as heat sinks since they can conduct heat away faster. Those with lower thermal conductivity are often used as insulators (Callister 78). The classical transfer of energy happens through conduction, radiation, convection or combination of all ...

Introduction

Accurate temperature measurement is a very vital and common requirement in every industrial instrumentation process. It is however very difficult to achieve this objective. Unless the techniques used to measure temperature are proper and effective, massive reading inaccuracies can occur leading to the accumulation of useless data. This is where the thermocouple comes into play. This device is a temperature sensor that is widely used in all corners of the globe. It has very many favorable characteristics and these include: high inherent accuracy; wide temperature range suitability; high reliability; great application versatility, fast thermal response and relatively low cost. The thermocouple ...

Abstract

Photovoltaic (PV) systems are one of the next generation’s renewable energy sources for our world energy demand. PV modules are highly reliable. However, in polluted environments, over time, they will collect grime and dust. There are also limited field data studies about soiling losses on PV modules. The study showed how important it is to investigate the effect of tilt angle on soiling.

The study includes two sets of mini-modules. Each set has 9 PV modules tilted at 0, 5, 10, 15, 20, 23, 30, 33 and 40o. The first set called "Cleaned" was cleaned every other day. ...