chemical engineering thermodynamics pdf 7th

In many countries the surface of the earth acts as a very large collector of solar energy, where the energy radiated from the sun is stored below the earth’s surface. Variations of the most critical parameters have been studied and analyzed to evaluate plant features and find out an optimized configuration. Under optimized condition, the thermodynamic efficiency of 52% is achieved. Different plant configurations have been studied and the best one found to be a regenerative gas turbine. The exhausted gases out of the SOFC enter a burner for further fuel combusting and finally the off-gases are sent to a gas turbine to produce additional electricity. Gasification plant is fed by MSW to produce syngas by which the anode side of an SOFC is fed wherein it reacts with air and produces electricity. A Municipal Solid Waste Gasification Plant Integrated with Solid Oxide Fuel Cell (SOFC) and Gas Turbine (GT) has been studied and the plant is called IGSG (Integrated Gasification SOFC and GT). Moreover, future improvements, such as a Peltier cooling system, which allows a reduction of the temperature in the nozzle throat, improving the condensation process, and a variable inlet area, could potentially improve the working range towards the required 30–60% relative humidity in buildings.Īn interesting source of producing energy with low pollutants emission and reduced environmental impact are the biomasses particularly using Municipal Solid Waste (MSW) as fuel, can be a competitive solution not only to produce energy with negligible costs but also to decrease the storage in landfills. The main results, based on computational fluid dynamics (CFD) simulations and experimental tests in wind tunnels, show an initial working range of up to 80% relative humidity, with almost ten times reduction in energy consumption compared to the classical mechanical refrigeration dehumidifiers. This article aims to show a new method for indoor moist air dehumidification, based on a controlled adiabatic expansion of moist air, similar to the Foehn effect, by means of a nozzle–diffuser system. However, commonly employed cooling based dehumidification systems have a very high energy consumption, from 720 W in residential buildings to 3150 W in industrial buildings. To reduce the relative humidity level in the indoor environment, different dehumidification technologies are being employed. The northwest of Spain is defined by very high relative humidity values, with an average relative humidity of 85% throughout the year, which is considered too high by most standards and therefore can be related to various health problems and fungi growth.

Chemical engineering thermodynamics pdf 7th