One of the most important points in a heat exchanger is the overall heat transfer coefficient. This coefficient is obtained in terms of the conduction and convection resistances between the fluids separated by flat walls and cylindrical shells, respectively. The layer of scale on the surfaces may increase the resistance to heat transfer between the two fluids to a large extent. This effect can be taken into account by introducing an additional thermal resistance, called the fouling coefficient (Rf), and its value depends on the operating temperature, fluid velocity, and the operating time of the exchanger.

One of the main factors of scale in building installations is the presence of calcium carbonate in water, because the solubility of this compound in water is very low and if the conditions are right, it will precipitate quickly. One of the parts that provides these conditions is the surfaces in contact with water in heat exchangers in domestic gas-fired boilers (heat packages).

Chiller is derived from the Latin word Chill, meaning to cool. Various cycles are used to create refrigeration, the most important of which are the compression refrigeration cycle, the absorption refrigeration cycle, and the thermoelectric refrigeration cycle.

Mitreh Cooling Tower Anti-Fouling is one of the innovative products of Abrizan Company. This product, using an excellent composition, serves all industries and large buildings that use cooling towers to exchange and remove water heat. Mitreh's product prevents the reduction of the performance of this system by preventing the formation of fouling. A system that plays the role of a heat exchanger.

Steam boilers are mainly made of carbon steels, and the internal surface of these metals that are in contact with water must be free of deposits. Deposits have a lower thermal conductivity than metals, which causes the temperature of the metal to rise on the combustion wall side. Therefore, more fuel is needed to produce steam. Therefore, there is a need to control and wash these deposits inside the steam boiler.

Condenser: A unit for controlling temperature in refrigerators, air conditioning systems, and chillers. Its main function is as a heat exchanger in which it converts a substance (refrigerant) from a gas state to a liquid state, from where the latent heat is dissipated by the substance and transferred to the condenser coolant.

Refrigeration is the process of absorbing heat from one fluid and releasing it to another. The fluid can be air, water, or any other gas or liquid. In all refrigeration systems, keeping cool involves absorbing heat from a lower-temperature material and releasing it to a higher-temperature environment.

Mitreh is a superior solution for dealing with scale in various industries. Mitreh scale removal solution, a revolutionary product from Abrizan Industrial Research Company, is an efficient alternative to traditional scale removal methods. This product offers a comprehensive solution to the scale problem in various industries by overcoming the limitations of existing physical and chemical methods.

There are various types of heat exchangers in the industry, examples of which include: double-tube, plate, spiral tube and shell-and-tube heat exchangers, each of which has its own working method. Also, each heat exchanger has its own advantages and disadvantages.

This term is the name of advanced products with scale removal, anti-scale and anti-corrosion properties that are designed to help optimize energy consumption and solve scale and corrosion problems in industrial water systems. The name "Mitreh" is derived from the ancient word "Mitreh" which means pact, friendship and sun. This name reflects the commitment of the creators of Mitreh to create a friendly relationship between industry and water.