If there are more items in the fridge does each one cause the fridge to have a higher uptime when maintaining colder temperatures?
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In: Engineering
The two questions in the post ask different questions.
The subject is “with more items to cool?” so it does it work harder if you put more warm stuff in it. The answer to that is YES if more times is more or the same item at the same temperature. If the suff it not the same then it depends on what it is. Water, for example, have 4.9x higher specific heat. So putting in 1 kg of water or 4.9 kg of glass at the same temperature requires the same amount of energy to cool down. So if more stuff require more energy depend on the stuff.
The second question is “maintaining colder temperatures?” That is the energy used when all in it is cooled. Then if the door is not opened the energy usage is independent of what it contain. The heat is lost through the walls and they conduct heat the same way regardless of what is in it.
If the door is opened then more stuff results in lower energy consumption. the free cold air can escape and be replaced with warm air relative quickly when you open the door. If you have air trapped in a containers or have replaced it with something liquid or sold that stay in it you reduce the amount of air that can be replaced with warm air.
So when you open the door the more stuff results in less energy needed to return to the set temperature. The temperature will also be more even with more stuff in it.
So the answers is yes depending on what more stuff is. It works the same if closed and less if opened with more stuff in it.
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