Back to List What is a Heat Exchanger?
What is a Heat Exchanger? Put simply, a heat exchanger is a device which transfers heat from one medium to another, a Hydraulic Oil Cooler or example will remove heat from hot oil by using cold water or air.
Alternatively a Swimming Pool Heat Exchanger uses hot water from a boiler or solar heated water circuit to heat the pool water. Heat is transferred by conduction through the exchanger materials which separate the mediums being used.
A shell and tube heat exchanger passes fluids through and over tubes, where as Heat exchanger air cooled heat exchanger passes cool air Heat exchanger a core of fins to cool a liquid.
What types of Heat Exchanger are available? There are many different types of heat exchanger available, the three main types that Thermex supplies are; Shell and Tube ; Shell and Tube Heat Exchangers consist of a large number of small tubes which are located within a cylindrical shell.
The tubes are positioned into the cylinder using a tube bundle or "tube stack" which can either have fixed tube plates permanently fixed to the body or, in the case of Thermex Heat Exchangers a floating tube stack which allows the tube bundle to expand and contract with varying heat conditions as well as allowing the tube bundle to be easily removed for servicing and maintenance.
Plate Type ; Plate Heat Exchangers operate in very much the same way as a shell and tube heat exchanger, using a series of stacked plates rather than tubes. Plate heat exchangers are usually Heat exchanger or gasketed depending on the application and fluids being used.
Their compact stainless steel construction makes them an ideal choice for use with refrigerants or in food and beverage processing. Air Cooled ; Air Cooled Heat Exchangers are commonly used in vehicles or other mobile applications where no permanent cool water source is available. Thermex designs and supplies combination cooling packs or combi-coolers which combine an engine jacket water cooler, oil cooler and charge air cooler into a single unit reducing space requirements and improving efficiency.
Cool air is provided either by a fan or by air flow caused by the movement of the vehicle. How is a Heat Exchanger designed? To be able to select a heat exchanger, we need to know; Primary circuit fluid type, temperature and flow rate usually the hot fluid What you want to take out of the primary circuit Heat dissipation or a target outlet temperature Secondary circuit fluid type, temperature and flow rate usually the coolant The fields above are only the basics.
When putting an enquiry together you should also make Thermex aware of any pressure loss limitations and any other special requirements.
Please click here to download the Thermex data sheet template which highlights the required fields for heat exchanger selection. The data sheet should also be saved and sent to us if you require a quotation for a heat exchanger. Please feel free to contact us if you need assistance with the form.
Marine Heat Exchangers The operating principles of a marine heat exchanger are the same as a cooler designed for fresh water use, the main consideration for the designer however is that the marine heat exchanger must be resilient to erosion or corrosion caused by sea water.
There are other factors which need to be taken in to consideration when a marine heat exchanger is being designed. One is the velocity, if it is too low then there is a risk that sand and other particles will block the tubes.
If it is too fast on the other hand then those same particles can rapidly erode the tube plate and tubes.
Additional protection can be provided by installing a sacrificial anode which Thermex can include upon request. This will be installed in to the threaded hole normally used for a drain plug and is in direct contact with the sea water flow. What fluids can a Heat Exchanger operate with?
The suitability of a fluid with a heat exchanger will depend on the type of heat exchanger being used and the materials which are available. For more corrosive fluids such as chlorinated salt water, refrigerants and acids other materials such as Stainless Steel and Titanium will need to be used instead.
What is temperature Cross Over? Temperature cross over is a term used to describe the scenario where the temperatures of both circuits in a liquid cooled heat exchanger begin to cross over. This can be an important factor in a heat exchanger design as the efficiency of a cooler will be significantly reduced when the temperatures cross over.
In many cases a plate heat exchanger is the best option for applications where temperature cross over can't be avoided.Heat exchanger or not? You've seen that website called hot or not?
Well here's my equivalent: heat exchanger or not. If you're still confused about what a heat exchanger is, you might find it helpful to think about two examples of everyday, heat-moving devices that transport heat but . For over 20 years Heat-Exchanger USA has been designing and fabricating new shell & tube heat exchangers, as well as direct replacement and duplicate heat exchangers.
Heat-Exchanger USA designs and builds all its Heat Exchangers to ASME Section VIII, Division 1 requirements, as well as per TEMA B, C, & R standards. A heat exchanger is a device used to transfer heat between two or more fluids. The fluids may be separated by a solid wall to prevent mixing or they may be in direct contact.
They are widely used in space heating, refrigeration, air conditioning, power stations, chemical plants, petrochemical plants, petroleum refineries, natural-gas processing, and sewage treatment.
A heat exchanger is a device used to transfer heat between two or more fluids. In other words, heat exchangers are used in both cooling and heating processes. The fluids may be separated by a solid wall to prevent mixing or they may be in direct contact.
They are widely used in space heating, refrigeration, air conditioning, power stations, chemical plants, petrochemical plants, petroleum.
Product Description This unit is a Water to Air Heat Exchanger for use in your hot air. These heat exchangers are % factory tested, are made of stainless steel, and have heavy duty male pipe thread connections, and mounting studs come standard.
The heat exchangers are .