Premium Blast Cooling Air Cooler with ISO Certification

Product Description

 

Introduction to air-cooled heat exchangers

 

Water shortage and increasing costs, together with more recent concerns about water pollution and cooling tower plumes, have greatly reduced industry's use of water cooled heat exchangers. Consequently, when further heat integration within the plant is not possible, it is now usual to reject heat directly to the atmosphere, and a large proportion of the process cooling in refineries and chemical plants takes place in Air Cooled Heat Exchangers (AC-HEs).

 

There is also increasing use of Air Cooled Condensers for power stations. The basic principles are the same but these are specialized items and are normally configured as an A-frame or "roof type". These condensers may be very large-the condensers for a 4000 MW power station in South Africa have over 2300 tube bundles, 288 fans each 9.1 m in diameter and a total plot area 500 m X 70 m.

 

AC-HEs for process plants are normally just called Aircoolers, but should not be confused with devices for cooling air (best described as Air Chillers).

 

The design of an AC-HE is more complex than for a Shell and Tube Heat Exchanger, as there are many more components and variables.

 

The structure of an AC-HE is painted or galvanized, depending on customer specification. However, the costs are roughly the same if a multiple coat paint system is specified. Often the painted units are more expensive. There seems to be a trend toward more galvanized structures because they require virtually no maintenance. Painted structures require touch-up after installation and they often rust anyway.

 

Air-cooled heat exchangers are used extensively throughout the oil and gas industry, from upstream production to refineries and petrochemical plants, under high pressure and high temperature conditions, as well as corrosive fluids and environments.

 

Applications:

Petrochemical

Refining

Refinery

chemical plants

Power generation

Natural gas processing

Natural gas compression

Oil & gas transmission

LNG liquefaction &vaporization

Engine radiator cooling

Bitumen extraction and upgrading

Industrial process applications

natural gas processing plants

liquefaction facilities

large transmission pipelines

Gas Compression

What standards air used for Air-Cooled Exchangers?

First, almost all air coolers are built to Sect. VIII of the ASME Code, since they are pressure vessels. For refinery and petrochemical services most customers include 661 (Air-Cooled Heat Exchangers for General Refinery Service) in their specifications.

 

This spec is very good since it includes all the necessary information to properly specify a cooler and provides for a high level of minimum quality in the design and fabrication of the cooler. In the back it has a very good checklist where a customer can decide exactly what type construction is needed and what options are important. These include such items as galvanizing vs. painting, types of headers, maintenance walkways and platforms, controls, and external loads on the cooler. The following details refer mostly to the specifications.

 

 

 

What kinds of finned tubes are used?

The tubes can be of virtually any material available, such as carbon steel, stainless steel, Admiralty brass, or more exotic alloys. The minimum preferred outside diameter is one inch. Some manufacturers sometimes use smaller tubes, but most of the process coolers have tubes which are 1.0", 1.25", or 1.5" OD. The minimum tube wall thicknesses vary with the material. In some cases the design pressure and design temperature of the exchanger govern the minimum thickness.

 

The fins are almost always of aluminum material. The most common type of fin is the helically wrapped, L-footed type. These are used where the process temperatures are below about 350 °. F. The specification calls for cast zinc bands at the ends of the tubes to prevent the fins from unwrapping. Some of the better manufacturers also use cast zinc bands at the tube supports. For higher process temperatures, most customers prefer either embedded or extruded fins. The embedded fins have the highest temperature capabilities. They are made by a process which cuts a helical groove in the OD of the tube, wraps the fin into the groove, then rolls the upset metal from the tube back against the fin to lock it into place. The tube wall must be thicker with embedded fins because of the groove.

Different types of fin tubes:
1.Multiple fin structures can be designed.
2.Automatic welding technology of argon arc deep hole.
3.Flatting and strength expansion technology.


Advantages of fin tubes :

1. Adopt high quality low carbon content steel
2. Advanced welding technology
3. Good thermal conductivity
4. Long durable
5. Safe and reliable
6. Can be customized according to specific working condition

Different structures of fin tube air coolers:
The air cooler can be designed in the forms of air - blast, induced wind and pitched roof structure.
 

Production Workshop

 

Company Profile

	Business Type:	Manufacturer/Factory
	Main Products:	finned tubes,fin heat exchanger,air cooler,radiator,economizer,condenser, vaporizer/evaporator ...

DATANG STEEL PIPE Co., Ltd is a reputed processor and wholesaler that export to global markets for 17 years.
You will find a extensive range of finned tubes,fin tube heat exchanger,air cooler,radiator,economizer,condenser, vaporizer/evaporator in Datang.
Welcome to visit our factory and looking forward to cooperate with you.

We have a professional sales and technical team.
We design solutions and provide product cunstomization for you.

Now we have production facilities for manufacturing various types of finned tubes as mentioned below,
EXTRUDED FIN TUBE (Bimetallice Fin Tube&Integral Low Fin Tube)
'G' TYPE FIN TUBE (EMBEDDED FIN TUBE)
'L' 'LL' 'KL' TYPE FIN TUBE (WRAP AROUND FIN TUBE)
LASER WELDED FINNED TUBE
HIGH FREQUNECY WELDED FIN TUBE(Including Serrated Finned Tube)


These fin tubes typically find application in all industries where drying,heating,heat recovery in power plant\ refinery etc. The are equipped in heat exchangers like Air Cooled Heat Exchangers/Heat Recovery Systems/Boilers/Driers.

 

 

FAQ

1. Q: Do you manufacture by yourselves?
A: Yes. We are manfacturer and supplier with ASME for foreign market in China.

2.Q: How can we get the quotation asap?
A:  The heat exchanger,air preheater is designed and supplied by customers' operating condition on the plant site.We will design the HE technical data immediately once getting the operation condition from you, and supply quotation to you asap. 

3.Q:  What operation data do you need from us for the quotation carring?
A : 1. Working  temperature
     2. Working Pressure
     3. What's the lowing medium in heating and cooling pass.
     4. MOC of equipment
     5. Required size.
     6. Required quantity
     7. Other specified data

4.Q:What is the MOQ? 
A:We accept loose quantity order,any trial orders or mixed order 

5.Q:How does your factory do quality control? 
A:Quality is priority ,we make relevant strict testing before delivery 
Our factory has already obtained ISO9001 quality and ISO 14001 
Environmental management system certificate