The vessels that normally designed to release energy inform of heat is what that is referred to as radiators. Most people keep on arguing which is the most efficient type of radiators. Some argue that they are all efficient provided that they transform energy into heat. This is very different as you will see that the amount of heat that is produced is dependent on the amount of energy that will be put on it. In order to get the most efficient radiators you need to consider the following factors.
The size and surface area of the radiator is the first thing to consider. The surface area of the radiator will determine the capacity of the heat that will be produced. If the surface area is large then the heat output will be high. The convectors, fins, and the panels are the one that increases the surface area of the radiators. The panel that is in doubles or triple increases the surface area as compared to the singles. See this site; www.contourheating.co.uk/products/safe-surface-temperature/lst-radiators.
The water content of the radiator is another factor to consider. A radiator that holds little amount of water is better as it will also require little time to heat up and also little fuel to reach the full temperature. The most efficient radiator is therefore the one that has a water content that is lower.
The design of a radiator also contributes to the amount of heat that will be produced. The design is also dependent on the kind of surface area that the radiator has. For instance, with a tubular radiator, you will discover that it has hollow tubes hence has a larger surface area as compared to a radiator that is designed into a flat panel without any fin.
The material of the radiator is also important to consider although it has no direct impact on the amount of heat that will be produced. The main issue on what the material does is that it determines the speed at which the radiator will cool down or heat up. For example aluminum radiators will heat up very quickly as well as cool down very quickly as compared to cast iron radiators. View here.
The finish of the radiators is also important to check on. According to science, the kind of finish a radiator has affects the amount of heat produced in varying degrees. Impassivity as it is said to be the ability of heat to leave from the surface of any object varies between the finishes of the radiators. Radiators that are painted have a higher impassivity level as compared to radiators that have a bare metal. This is because painted finishes normally absorb as well as release more heat the bare metal finishes.
Know more here; http://home.wikia.com/wiki/Radiator.