Abstract

A substantial share of the total energy in various countries is consumed by industries and manufacturing sectors. Most of the energy is used for low and medium temperature process heating (up to 3000C) as well as low and medium cooling capacity (up to 350kW). To meet the demand, the industrial sector consumes most of its energy in either thermal (heat) or electrical energy forms. The use of fossil fuels accounts for about half of the overall share. This resulted in a necessity to commercialize local and clean renewable energy sources efficiently considering the reduction of economic dependence on fossil fuels and greenhouse gases emission. As such, solar energy has proven potential and resulted in considerable development and deployment of solar heating industrial processes (SHIP) and solar cooling systems in recent times. Thus, an attempt to present a review of the available literature on overall energy intensiveness, process temperature levels, solar technology match, and solar thermal system performance and cost have been made in this paper. The review also includes identifying the potential and relevance of involving solar thermal for industrial heating and cooling demand. As a result, at least 624 SHIP including promising large-scale plants and 1350 solar cooling systems most of them in small and medium capacities in operation are identified. Though limited data is available for solar cooling potential and installation, investigations projected the global SHIP potential to 5.6 EJ for 2050. Consequently, given the presence of many low and medium temperature heating processes and cooling capacities in industries with immense solar energy potential, developing counties such as Ethiopia can take experience and pay attention to the development of sustainable industrial systems.

Highlights

  • Now-a-days the global energy use is nearly 14,000 million tons of oil equivalent [Mtoe]

  • A significant share, about 54%, of the overall global energy use is reported for meeting industrial sector energy demand

  • This paper presents a review of the potential, installation, and relevance aspects of solar thermal for the most important fields of application

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Summary

INTRODUCTION

Now-a-days the global energy use is nearly 14,000 million tons of oil equivalent [Mtoe]. This paper presents a review of the potential, installation, and relevance aspects of solar thermal for the most important fields of application (heating and cooling) It assesses the details of low and medium temperature levels heating and cooling capacity in the industrial sector energy use for the common industrial groupings. Industrial solar heating and cooling [ISHC] is one of the promising options to meet the increasing industrial energy demand especially in oil-importing countries (Weiss and Spörk-Dür, 2018; Vajen et al, 2012; Rashad et al, 2013). The volume of petroleum imports has been growing rapidly (8% annually and higher) over the past 10 years which increased the burden on trade balance and ecology Considering these as the major challenges in realizing Ethiopia’s industrialization vision, the country plans to increase installed power generation capacity, up from 2, 000MW to 10, 320MW, by building major hydro-dams and expanding to other sources of renewable energy. The utilization of solar energy can be quite effective in the country because most regions in Ethiopia experience more or less uniform solar radiation (Energypedia, 2013; FDRE, 2013; Alemu, 2017)

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