Refrigerators

Refrigerator bodies are commonly painted white because white reflects light and heat, helping to keep the interior cool. In contrast, black absorbs heat, which could cause the refrigerator to consume more energy to maintain the desired temperature. Additionally, white surfaces are easier to clean and maintain than black surfaces.

A knocking noise from the fridge when running can be caused by a few reasons such as the compressor mounting bolts being loose, the condenser fan hitting something, or the evaporator fan motor malfunctioning. It's best to have a professional technician inspect and diagnose the issue to determine the exact cause and needed repair.

To dissolve a refrigerator magnet, you can try soaking it in a solution of warm water and vinegar or using a commercial solvent like acetone. Be sure to wear gloves and work in a well-ventilated area when handling any chemicals.

The refrigerator is usually not permanently magnetic; the magnet will induce magnetism temporarily in the refrigerator when it is brought close to it.

Brewed coffee can be stored in the fridge for 1-2 weeks before it starts to lose its freshness and flavor. It is best to store it in an airtight container to prevent it from absorbing other odors in the fridge. Reheating it before consumption is recommended for the best taste.

The cooling fins are painted black to improve heat absorption, as black color absorbs heat more efficiently than other colors. The rough surface increases surface area, which helps in dissipating heat more effectively, making the cooling process more efficient.

A magnet is a substance that is made of iron. The molecules in it are arranged in a way different than most magnets which is why the magnet has a tendency to attract materials more. Instead of the fridge magnet having a distinct north or south pole attraction, the fridge magnet has both alternating. This actually gives a stronger force of attraction.

When the magnet is brought in contact or brought close to the fridge, the force between the north and south poles of the body of the fridge and the magnet attract each other, and the alternating poles on the magnet attract as well, giving that extra attraction.

Refrigerator was just like a air conditioner and a magnet of Tom Swayer.

Copper pipes are used in refrigerators due to their excellent thermal conductivity and durability. They are highly efficient at transferring heat, which is essential for the refrigeration process. Additionally, copper does not corrode easily, making it a reliable material for long-term use in refrigeration systems.

It doesn't. The equation for mean free path is:

mfp = 1 / [sqrt(2)*n*pi*d^2]

In the above equation, n is the number of molecules per unit volume, and d is what is known as the collision diameter (the distance between the centers of the two colliding molecules). Thus, there are only three variables which affect mean free path: number of molecules, volume, and collision diameter. Volume can be changed by a change in temperature, but this question assumes constant volume (meaning pressure will change as temperature changes). As long as the amount of gas is unchanged, the mean free path will be unaffected by changes in temperature.

This is a wrong answer. The collision diameter decreases with the increase of temperature.

A full freezer maintains lower temperatures more effectively than an empty one because the items inside act as thermal mass, helping to retain coldness. This reduces the workload on the compressor, leading to more efficient cooling and potentially lower energy consumption.

The shaking could be caused by the refrigerant flowing through the system, which creates vibrations when the compressor shuts off. It could also be due to unbalanced internal components or the evaporator fan motor. If the shaking is excessive or accompanied by unusual noises, it's best to have a technician inspect the refrigerator.

Refrigerant absorbs heat from the air inside a refrigerator or air conditioner, causing it to change from a liquid to a gas. As it releases the absorbed heat outside, it condenses back into a liquid, and the cycle continues. This continuous process of absorbing and releasing heat allows the refrigerant to cool the air inside the appliance.

Balancing a refrigeration system involves adjusting various components such as the expansion valve, evaporator, and condenser to ensure proper operation and efficiency. This process helps optimize the system's performance by ensuring that each component is working at its designed capacity and that the system is thermally balanced.

This is a matter of melting and freezing. When you touch the tray, the warmth from your finger quickly melts a bit of a ice and creates a thin layer of water between the tray and your finger. Since the tray is so cold, it quickly freezes that thing layer of water forming an icy bond between your finger and the tray.

Old fridges typically use chlorofluorocarbons (CFCs) as the refrigerant gas. These gases have been phased out due to their harmful effects on the ozone layer.

A refrigerator uses a refrigeration system to remove heat from the interior, keeping the inside cool. It does this by circulating a refrigerant through a series of coils where it absorbs heat from inside the fridge and releases it outside. The insulation in the walls of the refrigerator helps to maintain the cool temperature by trapping the cold air inside.

If it is in working order with everything pristine (chrome, paint etc).... restored like new.... depending on the model $500 to $2000 if the buyer can show it off...

If it is rusty or beat up... if the buyer has to pull it out of your basement and restore it himself.... $100 to $300

Obviously some are worth more than others.

Some Philcos are worth way more!

The three basic laws of refrigeration are: 1) The law of conservation of energy, which states that energy cannot be created or destroyed, only transferred or converted. 2) The first law of thermodynamics, which states that energy is conserved in a system and can be neither created nor destroyed. 3) The second law of thermodynamics, which states that heat will naturally flow from a high-temperature region to a low-temperature region.

Most refrigerators use a capillary tube as the refrigerant metering device. It is a simple and cost-effective way to regulate the flow of refrigerant into the evaporator coil.

When you close the fridge door, a mechanism called a door switch is activated, which is designed to turn off the light to save energy and prevent the temperature inside the fridge from rising. This helps to maintain the cool environment needed to keep the food fresh.

the cells in the celery lose water through evaporation, causing the celery to become dehydrated and limp. Celery has a high water content, so when it is exposed to air in the refrigerator, it can lose moisture quickly, leading to wilting.

Ice water will cool a soda faster than the fridge. This is because the ice water can transfer heat more quickly to the soda due to the direct contact and the greater temperature difference between the two. The fridge cools the soda more slowly as it relies on the surrounding air to cool down the drink.

In the 1930' non-toxic, non-flammable synthetic refrigerants such as Freon-12 were introduced. However, R-12 damaged the ozone layer, causing governments to issue a ban on its use in new refrigerators in 1994. The less harmful replacement, R-134a has been in common use since 1990.

The cooling unit in the refrigerator is typically located at the top. As a result, cold air is generated at the top and then circulates down to the bottom. This can lead to the bottom being warmer as the cool air sinks and the warm air rises. Regularly cleaning the coils at the back can help with air circulation and temperature regulation.