Refrigerator Energy Consumption Equation

A new energy label introduced in 2010 is based on the energy efficiency index eei and has energy classes in the range a to d.

Refrigerator energy consumption equation.

A refrigerator is an open system that dispels heat from a closed space to a warmer area usually a kitchen or another room. The power consumption of refrigerators is 400 1 000 kwh per year this applies to models in the 21 25 cubic foot range. By dispelling the heat from this area it decreases in temperature allowing food and other items to remain at a cool temperature refrigerators appear to violate the second law of thermodynamics but the key reason they do not is because of the work needed as input to the. Refrigerators are one of the most common household appliances and are used to preserve food by keeping it cool most refrigerators also come with a built in freezer box for freezing food.

For example the energy bill for a typical new refrigerator with automatic defrost and top mounted freezer will be about 55 dollars year whereas a typical model sold in 1973 will cost nearly 160 dollars year almost three times the energy consumption. If your existing refrigerator is over 10 years old replace it with a new energy efficient refrigerator. Actual savings may vary based on use upkeep and other factors. For the washing cycles a weighted mix consisting of 42 full load cycles at 60 c 29.

The average energy usage of modern refrigerators is 400 600 kwh per year. Why the top mount freezer refrigerator is the most energy efficient refrigerator. This flip your fridge calculator is designed to provide an estimate of the savings associated with replacing or removing an old refrigerator or freezer with a new energy star certified model. Modern refrigerators are very energy efficient compared to older models from a few decades ago.

Electricity usage of a refrigerator. This translates to 33 kwh 50 kwh per month or an average wattage of 46 to 69 watts this equates to an average hourly power consumption of 46 to 69 wh. On the other hand these ratings also signify environment friendly appliances that reduce the emission of cfc and other pollutants into the environment. The energy efficiency of refrigerators and freezers has improved dramatically over the past three decades.

Generally the larger the refrigerator the greater the energy consumption. The eei is a measure of the annual electricity consumption and includes energy consumed during power off and standby modes and the energy consumed in 220 washing cycles. Refrigerators over 15 years old could be costing you more than 80 per year to run. Newer models are much more energy efficient than the old avocado green refrigerator at grandma s house.

While it might seem as if having a fridge with the freezer on the top or the bottom is really just about whether or not you want to stoop to get out your ice cream it is the placement of the freezer in relation to the compressor that makes the energy difference. Consider retiring the old refrigerator in your basement or garage. Power consumption is calculated depending upon the compressor cooling liquid efficiency hfc energy loss during the transmission and the material used in the making of the refrigerator.