Effect of the refrigerant charge on transcritical CO2 direct evaporation ice-making system

Zhang, Zhenying; Wang, Shiqi; Zhang, Paiwei; Guan, Zheng; Chang, Li; Wang, Hongli

doi:10.1016/j.applthermaleng.2024.123283

Cited by 1 publication

(1 citation statement)

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“…Additionally, their abundance in nature and neutrality concerning the greenhouse effect render them environmentally responsible choices. This technological advancement reflects a growing commitment to sustainable solutions in the refrigeration industry, aligning with global demands for more ecological practices [18].…”

Section: Refrigeration Systemmentioning

confidence: 99%

Sustainable CO2 Refrigeration System for Fish Cold Storage Facility Using a Renewable Integrated System with Solar, Wind and Tidal Energy for Cape Verde—Analyzing Scenarios

Garcia,

Semedo

2024

Sustainability

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This study compares four feasible alternative solutions for an integrated cold storage system in the city of Tarrafal, Santiago, Cape Verde. Integrated systems using grid electricity are compared with autonomous systems generating electrical energy from renewable sources, alongside various types of refrigeration facility systems. Its objective is to assess the energy efficiency, financial feasibility, and environmental impact across four scenarios. Scenario 1 utilizes two R134a refrigeration units powered by the public grid. Scenario 2 employs a transcritical R744 (CO2) system using grid electricity. Scenario 3 incorporates R744 and autonomous renewable energy. Scenario 4 employs R744 for refrigeration with seawater heat exchange and autonomous renewable energy sources. The findings favor Scenario 4, emitting 15,882 kg CO2 eq with a 5-year return on investment. Autonomous electricity production in this scenario reduces emissions by 95%. Despite an initial cost of EUR 769,172.00, Scenario 3 demonstrates financial viability, contributing to energy sustainability. This autonomous production reduces emissions by 360,697 kg CO2 compared to conventional systems, highlighting the positive impact of local renewable energy integration.

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Section: Refrigeration Systemmentioning

confidence: 99%