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Biofuel and biomass renewable growth management
Published in Henry K. H. Wang, Renewable Energy Management in Emerging Economies, 2020
Biomass in many different forms, including the solid, liquid or gaseous forms, has been used to produce thermal energy for residential and industrial heating applications. Solid biomass has been burned directly in both traditional stoves and more modern appliances so as to provide heat for cooking. Biomass has been providing renewable thermal energy for residential heating and water heating. It can also be used on larger scales to provide heating for industrial and commercial premises. Biomass can be used to provide either low-temperature thermal energy for heating and drying applications or high-temperature process heat. Various forms of biomass thermal energies could also be co-generated to produce electricity via combined heat and power (CHP) systems. Bio-heat energy can also be distributed from larger production facilities by district energy systems to provide heating and cooling to residential, commercial and industrial customers.
Performance evaluation of an absorption refrigeration system using R1234yf - organic absorbents working fluids
Published in Science and Technology for the Built Environment, 2021
Salhi Khelifa, Khaled Ramadan, Mohammed Ali Hadj Ammar, Hadjiat Mohammed Moundji
In the light of the above discussion, it is inferred that the absorption refrigeration system with R1234yf-organic absorbents is a promising system and promotes the development of the absorption cycles. This system has two advantages; the potential to use renewable thermal energy to reduce electricity consumption and the low-GWP refrigerants to reduce the global warming effect. This study revealed that the R1234yf should replace the R134a refrigerant in absorption systems, despite the additional cost. Since the refrigerant R134a will be phased out in the near future because of the environmental regulations and penalties the use of R1234yf-organic absorbents in absorption refrigeration systems is strongly recommended.