An air-water mixture is found from the heat and mass balance to be at 60°C (333 K) and 0.025 kg/kg (25 g/kg) absolute humidity. Calculate the other main parameters for the mixture. Take atmospheric pressure as 101,325 Pa.
Method: Consult item (vi) in Table 12-5 for the calculation methodology.
From the initial terminology section, specific humidity YW = 0.02439 kg/kg, mole ratio z = 0.0402 kmol/kmol, mole fraction y = 0.
Effect greenhouse What are greenhouse gases (GHG)? Greenhouse gases (GHGs) trap heat within the earth’s atmosphere, contributing to the ‘greenhouse’ effect and causing global warming. These gases include carbon dioxide, methane, nitrous oxide, and water vapor. Industry, including manufacturing, is the second largest global emitter of human-created GHGs. Much of industrial GHG emissions are due to the burning of fossil fuels for heat and power generation.
Why should I care about GHGs?
Structural steel grades are referred to by their corresponding ASTM designation. For example, the most commonly used grade of structural steel is A36, which is produced to meet the requirements of the ASTM A36 specification. This grade offers a good mix of strength, weldability, and cost. In many designs, this specification alone will satisfy designers’ needs. Other specifications, such as A53 for pipe, provide an equivalent grade of steel for that type of product.
Buildings should be designed to withstand minor earthquakes without damage, because they may occur almost everywhere. For major earthquakes, it may not be economical to prevent all damage but collapse should be precluded. Because an earthquake and a high wind are not likely to occur simultaneously, building codes usually do not require that buildings be designed for a combination of large seismic and wind loads. Thus, designers may assume that the full strength of wind bracing is also available to resist drift caused by earthquakes.
Industrial vehicles/trucks are one of the most common groups of materials handling equipment used in industry as well as in the day-to-day distribution of goods in warehouses, large stores, transport depots, etc. The basic operation and construction features of some of the common types of industrial trucks will be discussed here. The adjective ‘‘industrial’’ used before this group of vehicles/trucks is to distinguish these from other groups of vehicles like buses, lorries, trucks, etc.
When modern industrialization started in the 19th century, many people migrated from the agricultural area to the big cities. Public hygiene became a major problem. Human excrement and waste was discharged into open channels, rivers, and lakes. The pollution was disastrous and hygiene-related epidemic diseases, like cholera and typhus, occurred frequently. Therefore, it was an important step forward when public water collection systems and treatment plants were introduced at the end of the 19th century.
This blog will help to refresh and expand your understanding of basic electrical components and the basic terms used in electricity as required for instrumentation.
This chapter discusses
■ Basic passive components (resistors, capacitors, and inductors) used in electrical circuits
■ Applications of Ohm’s law and Kirchoff’s laws
■ Use of resistors as voltage dividers
■ Effective equivalent circuits for basic devices connected in series and parallel
■ The Wheatstone bridge
Automatic fire sprinkler systems have been protecting property in the United States since the late 1800s; in fact, the Standard for the Installation of Sprinkler Systems, 1896 was the first standard developed by the National Fire Protection Association (NFPA). Today the NFPA still develops the most widely accepted standards for the design and installation of sprinkler systems: NFPA 13, Standard for the Installation of Sprinkler Systems; 20, Installation of Centrifugal Fire Pumps; 24, Installation of Private Fire Services Mains and Their Appurtenances; 231, General Storage and 231C, Rack Storage of Materials.
Method to be adopted and choice of equipment for a materials handling system primarily depends on the type of material/s to be handled. It is, therefore, very important to know about different types of materials and their characteristics which are related to methods and equipment used for their handling.
As innumerable different materials are used and need to be handled in industries, they are classified
based on specific characteristics relevant to their handling.