Liquid Level Detection by Using Optical Sensors in Riyadh Wastewater Dissertation

Liquid Level Detection by Using Optical Sensors in Riyadh Wastewater Treatment Station - Dissertation Example C Damping coefficient ODEs Second order linear r Root of equation Acknowledgment I would like to thank my supervisor Professor Gui Tian strongly for being supportive and an excellent guidance throughout the duration of this work. My thanks must also go to Professor Matthew Armstrong for his advice regarding the control part of this project on. I would like to thank yassir Ali Bouraee for helping me in the fluid system control. List of contents Abstract......................................................................................... 1 List of Symbols and Acronyms...................................................... 3 Acknowledgements.............................................................................. 4 List of contents..................................................................................... 5 Chapter 1:Background 7 1.1 Introduction 1.2.1 What are wastewater treatment stations ....................... 9 1,2.2 What are the wastewater sources 1.2.3 What are the wastewater release gases Chapter 2: literature review 10 2.1 Introduction 2.2 The principle of liquid level detection and importance 2.3 Point liquid level detections techniques................................. 13 2.3.1 Magnetic and Mechanical float level sensors 2.3.2 Pneumatic level sensors 2.3.3 Conductive level... The main aim of this project is to find the proper liquid level sensors between these two sensors for working in Riyadh wastewater treatment station. By the end of the project, one of the main reason which causes a problem to the ultrasonic level sensors at Riyadh station came up which is a high temperature or temperatures Variety. According to Monitoring weather center in Riyadh, the average temperature at the summer time between 40-55 degree in the day time and the moisture in Riyadh is very low. Therefore the ultrasonic sensor might get affected by the Variety of temperatures or high temperature. As result of low moisture and high temperatures, I think the proper sensor for Riyadh wastewater station is the optical infrared sensors. In part of characteristics consideration for both sensors to select the suitable one for wastewater environment, the accuracy of the optical sensor for detecting the distance between the sensor and the liquid level is noticed even though the variations of surrounding temperature and sunlight intensity. The sensor was affected by dirt and misroute. The ultrasonic sensor is able to detect the distance even though the variations in moisture content, dirt and surrounding sunlight intensity. And, the sensor was severely affected by the difference of the surrounding temperature. Finally, both sensors can be used as distance detection sensor in the wastewater treatment field,† if a careful consideration is given to the characteristics of both sensors with improvement on problems pointed out in this study†.

Recession in the economy Essay Example | Topics and Well Written Essays - 500 words

Recession in the economy - Essay Example Hence, countries are expected to come up with various macro and microeconomic policies that spur positive growth so that their economies can recover from the menace. Such is the case in Poland if they want to redeem the situation. Consumption forms a critical development criterion in any economy and the state must find measures to spur the vice. The government should first reduce taxes on the basic goods and services as it would reduce the prices of the commodities. Consumers will increase the number of consumption bundles and have an extra income that they can spend on other goods. As a result, the consumption patterns increases that bring more money to manufacturers that they can invest and spur growth in the country. Another measure is by the Poland government to provide subsidies to the producers. The manufacturer's cost of operations will be reduced hence making cheaper commodities (Auerbach, Alan and Yuriy, pg 15). This policy will translate into low prices of goods and service s in the market that will reduce inflation. High consumption results in more sales that lead to high revenues. The firms can hence invest the excess income making them expand and, as a result, hire more workers that reduce unemployment in the economy. Through the central bank of the country, the benchmark lending interest for loans should be reduced to commercial banks. The reduced mortgage rates would be passed to consumers and investments in the form of reduced lending by the commercial bank. More persons and firms would acquire the loan services that they invest in major parts of the country. The policy is necessary because the interest rate is inversely related to investments levels. The higher the interest rate, the lower the investment and the opposite are right (Auerbach, Alan and Yuriy, pg 18). Therefore, due to low rates, investors will expand their production that increases the level of output within the economy. The increased production makes the gross domestic products t o raise that makes the country have a favorable trade balance with her business partners increasing economic growth in the country.