Energy Efficiency of the Beverage Vending Machine Refrigeration System

Wongsuwan, Wipawadee; Kallaka, Ruechuda; Chaiwiwatworakul, Pipat

doi:10.1109/icpei52436.2021.9690664

Cited by 5 publications

(2 citation statements)

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“…There are several issues to consider before selecting an up-to-date refrigerant: energy efficiency with direct impact on GWP value, the ambient conditions which can impact efficiency in terms of heat dissipation, Total Equivalent Warming Impact (TEWI), operation and maintenance costs which are directly related to the experience of installation teams in the implementation of these systems. Wongsuwan W. et al [5] have underlined the importance of energy efficiency when the transition to more environmentally friendly refrigerants for vending machines is made. The IPCC6 [6] report highlights that R290 has a 20-year GWP of 0.072 and a 100-year GWP of 0.02.…”

Section: Introductionmentioning

confidence: 99%

Study on the heat transfer with regard to an off-grid vending machine having a low impact on the environment

Calotă,

Girip,

Ilie

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Following the current trend of energy economy, the article’s team designed a vending machine made of sandwich panels, in order to minimize the heat transfer from the environment to the chilled volume. The heat inputs calculation was based on the data provided in the sandwich panels’ technical sheets. In this paper, the real performance in operation was monitored, resulting in a deviation between 2.27 and 5.37% of the theoretical values for the global heat transfer coefficient. Furthermore, the TEWI coefficient (Total Equivalent Warming Impact) was evaluated to highlight the energy efficiency of the equipment, operating with refrigerant R290. Thereby, the authors emphasize the importance of the transition to natural refrigerants.

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Section: Introductionmentioning

confidence: 99%

Study on the heat transfer with regard to an off-grid vending machine having a low impact on the environment

Calotă,

Girip,

Ilie

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…Regarding energy efficiency, Wongsuwan et al [11] made a study on the beverage vending machine refrigeration system EER. The cooling load of the experimental stand consisting of 594 aluminum cans and Polyethylene terephthalate (PET) bottles was evaluated when replacing R134a with the R407C refrigerant.…”

Section: Introductionmentioning

confidence: 99%

Study on Energy Efficiency of an Off-Grid Vending Machine with Compact Heat Exchangers and Low GWP Refrigerant Powered by Solar Energy

et al. 2022

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The purpose of this research is to design an energy-efficient off-grid vending machine that has a refrigeration system powered by an environmentally friendly refrigerant. The paper presents details from the equipment’s design phase in terms of the resistance structure, photovoltaic panels area dimensioning, but also in terms of the necessary cooling load to be provided by the refrigeration system. The refrigerant chosen was R290 following a comparative analysis, which showed that it has an efficiency 6.6% higher than R134a. During the monitoring periods, the outdoors temperature varied between −4–28 °C, the relative humidity between 22–100% and yet only a slight indoor temperature variation of ±1.5 °C compared to the set value was recorded. The battery module managed to store enough energy from the photovoltaic panels to keep the vending machine functional through three consecutive days with adverse environmental conditions, as evidenced by the low variation of indoor temperature

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