Recently we offered 264 cutting plates of condenser for a power plant equipment company. The total weight is of the parts about 350 tons.
The customer is a large equipment manufacturing company focusing on energy equipment, industrial equipment, and integrated services. The main products include thermal power equipment, nuclear power equipment, wind turbine, transmission and distribution equipment, etc. The plates we fabricated this time are for the condenser of a large coastal power plant.
A condenser is a two-phase flow heat exchanger in which heat is generated from the conversion of vapor into liquid (condensation) and the heat generated is removed from the system by a coolant. Condensers may be classified into two main types: those in which the coolant and condensate stream is separated by a solid surface, usually a tube wall, and those in which the coolant and condensing vapor are brought into direct contact.
The direct contact type of condenser may consist of a vapor that is bubbled into a pool of liquid, a liquid that is sprayed into a vapor, or a packed column in which the liquid flows downward as a film over a packing material against the upward flow of vapor. Condensers in which the streams are separated may be subdivided into three main types: air-cooled, shell-and-tube, and plate. In the air-cooled type, condensation occurs inside tubes with cooling provided by air blown or sucked across the tubes. Fins with large surface areas are usually provided on the air side to compensate for the low air-side heat transfer coefficients. In shell-and-tube condensers, condensation may occur inside or outside the tubes. The orientation of the unit may be vertical or horizontal. In the refrigeration and air-conditioning industry, various types of two-phase flow heat exchangers are used. They are classified according to whether they are coils or shell-and-tube heat exchangers.
The Condenser has two major functions:
The Condenser Support Systems have the following functions:
The water from the circulating water system enters the condenser in a waterbox. The level in the waterbox must be maintained above the level of the uppermost tubes, otherwise the condenser will not be efficient. Generally the colder the circulating water, the more efficient the plant is. Power plants become less efficient when either the condenser tubes are fouled, e.g. by mud, plugging, or accumulation of other materials that reduce the ability to transfer heat from the steam to the water.
A condenser may heat the circulating water passing through as much as 40 degrees Fahrenheit.
The tubes are generally kept clean by a tube cleaning system that injects small abrasive sponge-like balls. In some cases, the power plant may have to reduce load so that the tubes can be cleaned manually.
Vacuum in the condenser is maintained by either a mechanical vacuum pump or steam-driven air ejectors that suck gases (not steam) from the condenser.
The waterboxes are kept full using an air ejector or other system that keeps water level in the column from the waterbox as high as needed - above the tubes.
On the steam side of the condenser, the water collects at the bottom in a hotwell that provides the water source for the suction of the condensate pumps.
Openex specializes in fabricating industrial heat exchangers for effective and precise temperature regulation, including the heating and cooling of liquids and gasses. We manufacture a wide variety of industrial heat exchanger types, each of which is best suited for different applications, purposes, and industries.
Since 2003,we have been manufacturing quality heat exchangers. Openex consolidates all fabrication activities in the field of heat exchangers and comes with perhaps the largest portfolio in this area globally. With shell and tube heat exchangers, plate heat exchangers, air filter systems, air-cooled heat exchangers, primary gas cooler, waste heat recovery boilers and economizer coils systems for various areas of application – our heat exchanger segment gives broad coverage of the spectrum. Customers in worldwide market for oil and gas, power, chemicals, defence, water and waste treatment and many more, leverage from the highest standard of safety, efficiency and sustainability that our heat exchangers deliver at optimum level.
Openex offers metal fabrication for heat exchangers that includes products, such as:
Shell and tube heat exchangers
Plate heat exchangers
Steam heat exchangers
Primary gas cooler
Towers & columns
Contact us at [email protected] or call us at +86 186 5928 0806 for more information about the fabrication of heat exchangers and to receive a free project quote today.