tailieunhanh - Module 1.1 Steam - The Energy Fluid

Steam - The Energy Fluid It is useful to introduce the topic of steam by considering its many uses and benefits, before entering an overview of the steam plant or any technical explanations. Steam has come a long way from its traditional associations with locomotives and the Industrial Revolution. Steam today is an integral and essential part of modern technology. Without it, our food, textile, chemical, medical, power, heating and transport industries could not exist or perform as they do. Steam provides a means of transporting controllable amounts of energy from a central, automated boiler house, where it can be efficiently. | Block 1 Introduction Steam - The Energy Fluid Module Module Steam - The Energy Fluid The Steam and Condensate Loop spi aroo Block 1 Introduction Steam - The Energy Fluid Module Steam - The Energy Fluid It is useful to introduce the topic of steam by considering its many uses and benefits before entering an overview of the steam plant or any technical explanations. Steam has come a long way from its traditional associations with locomotives and the Industrial Revolution. Steam today is an integral and essential part of modern technology. Without it our food textile chemical medical power heating and transport industries could not exist or perform as they do. Steam provides a means of transporting controllable amounts of energy from a central automated boiler house where it can be efficiently and economically generated to the point of use. Therefore as steam moves around a plant it can equally be considered to be the transport and provision of energy. For many reasons steam is one of the most widely used commodities for conveying heat energy. Its use is popular throughout industry for a broad range of tasks from mechanical power production to space heating and process applications. Fig. An 18th century steam engine. Photography courtesy of Kew Bridge Steam Museum London Fig. A modern packaged steam heat exchange system used for producing hot water Steam is efficient and economic to generate Water is plentiful and inexpensive. It is non-hazardous to health and environmentally sound. In its gaseous form it is a safe and efficient energy carrier. Steam can hold five or six times as much potential energy as an equivalent mass ofwater. When water is heated in a boiler it begins to absorb energy. Depending on the pressure in the boiler the water will evaporate at a certain temperature to form steam. The steam contains a large quantity of stored energy which will eventually be transferred to the process or the space to be heated. spir .