Ammonia-based compression heat pumps for simultaneous heating and cooling applications in milk pasteurization processes: Performance evaluation

Ayou, Dereje S.; Hargiyanto, Reza; Coronas, Alberto

doi:10.1016/j.applthermaleng.2022.119168

Cited by 9 publications

(3 citation statements)

References 32 publications

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“…On the other hand, based on the heat sink temperature HPs can be categorized as HP for sink temperatures up to 80 • C, high-temperature heat pump (HTHP) for sink temperatures up to 100 • C, and very high-temperature heat pump (VHTHP) for sink temperatures up to 160 • C [70]. HPs are most frequently used in the residential sector and for low-temperature industrial heat processes, such as the milk pasteurization processes in the dairy industry [71]. While HTHP and VHTHP are usually used in waste heat recovery processes in the industrial or district sector, where the waste heat available is used as an energy source for the HP, being capable of reaching a COP greater than 5 with heat sink temperatures between 80 to 125 • C [28,70,72,73].…”

Section: Photovoltaic-assisted Heat Pumps (Pv-hp)mentioning

confidence: 99%

“…Another useful indicator related to the primary energy performance of the system is the primary energy saving (PES). The PES is the ratio between the primary energy saved by the renewable energy system and the primary energy consumed by an equivalent fossil system that provides the same energy requirements [71,157]. This indicator allows the evaluation of the relative reduction in the primary energy consumption of the solar system (including electric and thermal energy) related to the primary energy consumption of a fossil energy alternative.…”

Section: Energetic Performance Indicatorsmentioning

confidence: 99%

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Hybrid System of Photovoltaic and Solar Thermal Technologies for Industrial Process Heat

et al. 2023

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Process heating is the activity with the most energy consumption in the industrial sector. Solar heating (SH) systems are a promising alternative to provide renewable thermal energy to industrial processes. However, factors such as high investment costs and area limitations in industrial facilities hinder their utilization; therefore, hybrid systems that combine two different solar thermal or photovoltaic technologies where each technology operates under conditions that allow a higher overall performance than conventional configurations have been proposed. In this review, we discuss the limitations of conventional SH systems and the potential of hybrid configurations to overcome them. First, the current literature about conventional and hybrid systems is presented. Then, the application of common performance indicators to evaluate hybrid configurations is analyzed. Finally, the limitation, advantages, and potential applications of conventional and hybrid systems are discussed. This work shows that conventional systems are the most promising alternatives in low and high-temperature industrial applications. At the same time, in medium and processes, hybrid configurations have great potential to increase the performance of SH systems and help to boost their adoption in the industrial sector. There are few studies about hybrid systems in industrial applications, and further research is required to determine their potential.

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Section: Photovoltaic-assisted Heat Pumps (Pv-hp)mentioning

confidence: 99%

Section: Energetic Performance Indicatorsmentioning

confidence: 99%

Hybrid System of Photovoltaic and Solar Thermal Technologies for Industrial Process Heat

et al. 2023

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“…Additionally, pure ammonia has been industrially used as a refrigerating agent [3, 4]. Thus, the ability to detect ammonia is useful in various fields, including environmental monitoring, medical diagnosis, and quality control [5–7]. Ammonia is a colorless and odorless gas with very corrosive effects.…”

Section: Introductionmentioning

confidence: 99%

Immobilization of biomolecular anthocyanin natural sensor into plasma‐cured polyethylene terephthalate fibers from recycled plastic waste for determination of ammonia

Al‐Qahtani,

Katouah,

Alenazi

et al. 2023

Luminescence

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Polyester textiles have been applied in numerous industrial applications. Polyester fibers are characterized with being excellent insulators to electricity, having excellent flexural and impact strength, ease of manufacture, low‐cost, as well as having resistance to moisture and chemicals. However, polyester fibers cannot be stained due to the absence of active dyeing sites on the surface of the fibrous structure. Thus, polyester cannot be dyed after it has been extruded. Herein, we report the development of novel‐colored polyester fabrics using plasma‐assisted dyeing and anthocyanin natural probe for determination of ammonia that may cause severe harmful effects to human organs and even death. Anthocyanin was extracted from red cabbage and characterized. The water‐soluble anthocyanin was fastened to polyester fibers by mordant (potash alum) to generate anthocyanin–mordant coordinative complex nanoparticles. Polyester can be treated with thin layer of anthocyanin probe after activation with plasma. The results showed excellent colorfastness, ultraviolet blocking, and antibacterial performance of the anthocyanin‐dyed polyester (APET) fibers. The APET fibers showed great potential for developing a portable colorimetric device for an on‐site detection of ammonia. APET displayed a detection limit of aqueous ammonia in the range of 25–200 ppb, displaying a change in color from purple (542 nm) to white (387 nm).

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Thermodynamic performance of heat pump with R1234ze(E)/R1336mzz(E) binary refrigerant

Wang

Jiang

et al. 2023

Applied Thermal Engineering

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Ammonia-based compression heat pumps for simultaneous heating and cooling applications in milk pasteurization processes: Performance evaluation

Cited by 9 publications

References 32 publications

Hybrid System of Photovoltaic and Solar Thermal Technologies for Industrial Process Heat

Hybrid System of Photovoltaic and Solar Thermal Technologies for Industrial Process Heat

Immobilization of biomolecular anthocyanin natural sensor into plasma‐cured polyethylene terephthalate fibers from recycled plastic waste for determination of ammonia

Thermodynamic performance of heat pump with R1234ze(E)/R1336mzz(E) binary refrigerant

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