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After selecting a preferred refrigerator, users should pay attention to the energy-saving factor. Beyond the price, energy efficiency is a crucial criterion for users to consider when choosing a model.
1. Identifying Energy-Efficient Refrigerators
After choosing a refrigerator that suits your preferences, it's essential to consider the energy-saving aspect. In addition to the price, energy efficiency is a crucial criterion for users to weigh when selecting a model.
The simplest way to identify energy-efficient refrigerators is to pay attention to the energy label on the appliance. However, if comparing two refrigerators with the same star rating, users should look at a more detailed parameter on the label: the electricity consumption level.
Above are the energy labels of two refrigerators with similar capacities, both rated 5 stars. However, looking at the energy labels reveals that Refrigerator 2 has lower electricity consumption than Refrigerator 1. To determine which refrigerator is more electricity-efficient and truly energy-saving, users can calculate the electricity consumption per liter of capacity.
Example:
- For a 335-liter Refrigerator 1 consuming 420 KWH/YEAR: 420 (KWH)/335 = ~ 1.25 (KWH).
- Refrigerator 2 with a capacity of 322 liters and an electricity consumption of 337 KWH/YEAR: 337 (KWH)/322 = ~ 1.05 (KWH).
Therefore, for every 1 liter of capacity, Refrigerator 2 consumes about 1.05 KWH, significantly lower than Refrigerator 1 (~ 1.25 KWH). This means Refrigerator 2 is genuinely more energy-saving and efficient in electricity usage than Refrigerator 1.
To determine the daily electricity consumption, divide the annual electricity consumption of the refrigerator by 365 days: 337 KWH / 365 days = ~ 0.92 KWH/day
Assuming the current government-provided electricity price is 2,500 VND/kWh, the daily cost for Refrigerator 2 would be: 0.92 x 2,500 VND = 2,300 VND.
