Tv Arjunan

Industrial processes require significant amounts of hot air, emphasizing the importance of developing efficient solar thermal systems to reduce dependency on fossil fuels and mitigate environmental impact. Most of the early studies focus on small-scale setups with lower airflow rates, limiting their applicability to industrial applications that require higher volumes of hot air. The primary focus of this work is to evaluate the impact of series and parallel thermal networking on the energy and enviro-economic performance of evacuated tube-based solar air heating systems, specifically for industrial process heating applications with moderate flow rates up to 1000 kg/h. A medium scale 42kWth experimental setup which consists of a blower, 28 sets of Evacuate Tube Solar Collector (ETSC) modules with 4 series and 7 parallel arrangements, baffle plates, a header, and a common duct, is developed. The airflow rate was adjusted across modules between 150 kg/h and 500 kg/h, maintaining a total airflow of 1000 kg/h at the outlet using control valves. Results indicate that the maximum average outlet temperature of 356 K was achieved at 150 kg/h. On clear sky days, the designed system can deliver hot air over 323 K at an operational flow rate of 150 kg/h between 9:30 a.m. and 4:00 p.m. The highest thermal efficiency was obtained at the higher operating flow rate of 500 kg/h. For the operating flow rate of 150 kg/h, the cost per kWh to provide hot air between 343 and 358 K is projected to be 0.0083$ (0.63 INR). The highest and least CO ₂ emission reductions were identified in the operating flow rates of 500 and 150 kg/h respectively. The average reduction in CO ₂ emissions is 19.68 tCO ₂ per year. Utilization of solar evacuate tube solar collector thermal networking can be deployed to reduce the environmental impact and fossil fuel dependancy. The system is more suitable for industrial process heating applications such as food product drying, paint drying, etc.

Most of the countries in the world are concentrating more on renewable energy resources to overcome the undesirable environmental impact and to fulfil the growing energy demand. Solar energy is one of the most beneficial forms of renewable energy since it has the fewest adverse effects on the surrounding environment. Numerous nations have devised solar energy policies in an effort to lessen their reliance on fossil fuels and boost the proportion of their domestic energy supply that comes from solar sources. The International Energy Agency used the global energy model to watch the working and functioning of the energy markets globally. In this chapter, the importance of the world energy models and the predictions are discussed in the first part. The later part of the chapter compares and explains the various global solar energy policies and global energy models by detailing theircharacteristic features.

Energy is the key factor in driving the economic progress and the development of any country. Industrial sectors consume a huge amount, accounting for nearly 32 to 35% of global energy consumption. Utilizing solar thermal energy is a step toward a sustainable and carbon-free energy future. Due to availability, economic viability, and environmental advantages, solar thermal energy is acknowledged as a viable alternative to replace conventional sources of energy in industries for process heating applications. In this chapter, the types of solar thermal collectors and their applications in different industrial processes are discussed. Further, the necessary assessments to be implemented for adopting solar thermal technologies in an industrial location and the hurdles to be considered such as technological, economic, social barriers, etc. are also discussed. Solar thermal conversion systems may be applied for many industrial applications in industries to support sustainable development.

The automobile sector is one of the world’s most important industries, with significant energy demands in both thermal and electrical forms. Many operations in the production of automobiles and auto components, including casting, forging, painting, and electroplating, need the use of heat or steam. Around 70% of the total energy consumed by the vehicle industry is thermal energy in the form of heat or steam. Solar collectors are capable of supplying a significant portion of thermal energy needed for industrial process heating, but the collector technology utilized is very dependent on the temperatures involved. The application of appropriate solar thermal technology can have a favourable influence on the overall energy and environmental situation of the automobile sector. There are several solar thermal technologies available for the automobile industry, including CST technologies. The solar-assisted process heating system reduced 30 to 40% of the expenditure on electricity and conventional fuels like coal, natural gas, LPG, diesel, etc. This chapter discusses the overview of the automobile industry’s energy consumption profile for various process heating applications and the temperature involved in the operations. The feasibility of utilizing solar thermal energy conversion technologies for fulfilling the thermal energy requirements is also discussed along with the attainable temperature. The later part of the chapter includes the successful implementation of solar thermal systems situated in different parts of the world.