The Science Behind It
The idea that using plastic bottles to reduce your fridge’s electricity bill is based on the concept of ‘Thermal Mass’.
More ice, less work: If there is more empty space inside the fridge, when you open the door, cold air will quickly escape and warm air will enter. Then the fridge’s compressor has to work again to adjust the temperature inside. This is what costs more electricity.
Water in a bottle: When you place plastic bottles filled with water in the empty spaces of the fridge, the water cools and turns into ice. This ice acts like a ‘cold storage’. When you open the fridge door, these ice cubes keep the fridge cool instead of the air. Since the compressor only has to run for a short time, you can save electricity.
How to do it:
Place plastic bottles filled with water in the freezer and in the empty spaces on the lower shelves of the fridge.
Do not fill the bottle with water (it expands when it turns into ice, which can cause the bottle to burst).
This helps to maintain the temperature of the fridge at all times (Cooling retention).
Critical Warnings:
Do not overfill: Placing bottles full of water in the fridge will block air circulation. This will affect the functioning of the fridge and put excessive pressure on the compressor. Leave some space for air circulation in the fridge.
Amount of bill reduction: This is only a small help. However, do not expect a large amount to be reduced from the bill. The main ways to reduce the bill are to clean the fridge regularly and ensure that the rubber gasket (door seal) is not damaged.
