To clean your heat exchangers, you can use Goodway’s Scale Removal System, which is a portable descaler with a 15-gallon tank. It’s constructed of heavy duty polyethylene and acid proof components, so the system will last for years when used in industrial applications.
To clean your PHE, first drain both sides and isolate it from your system fluid (generally done with isolation valves). Then, flush water through both sides until it runs clear.
Thereof, How long does a heat exchanger last?
20 years
Also to know is, How much does it cost to replace a heat exchanger? If so, here’s the thing: replacing a heat exchanger isn’t as simple or affordable as it sounds. In fact, replacing a furnace heat exchanger can take up to 8 hours and can cost anywhere from $2,000 to $3,500.
Subsequently, question is, Can a heat exchanger be repaired? Unfortunately, heat exchangers cannot be repaired. When a heat exchanger cracks or rusts through it must be replaced. Because the heat exchanger is at the center of the furnace, nearly the whole furnace must be disassembled. Even if the parts are covered under warranty, the labor and freight will start around $500.
Also, How do you clean a brazed plate heat exchanger?
Brazed connections – Clean by rubbing down and degreasing the various surfaces. Use the correct brazing temperature and brazing metal grade. Welded connections – To minimize the heat impact of the heat exchanger it is recommended to use TIG or MIG welding methods.
How do you maintain a heat exchanger?
– Online and Offline Cleaning. …
– Maintaining Heat Exchanger. …
– Periodic Cleaning. …
– Cleaning the PHE Manually. …
– Minimizing the Fouling Factor. …
– Analyzing and Addressing Issues in Heat Exchanger Efficiency.
What is scaling in heat exchangers?
Scaling is a type of fouling caused by inorganic salts in the water circuit of the heat exchanger. It increases the pressure drop and insulates the heat transfer surface, thus preventing efficient heat transfer. … The salts are therefore deposited on the warm surface when the cold water makes contact with it.
How long do heat exchangers last?
20 years
What causes scaling in cooling towers?
Typically, scale forms from calcium or water hardness-based salts, the mineral content in cooling water will form subsequent salts/scale such as calcium carbonate, calcium phosphate, magnesium silicate and calcium sulfate.
Is it worth replacing heat exchanger?
If your heat exchanger is cracked, your furnace is probably nearing the end of its life (18-20 years). If that’s the case, then it’s usually not worth the money to replace the heat exchanger. No matter who you ask, replacing a heat exchanger will be expensive. … Heat pumps can heat and cool your home.
What is a brazed plate heat exchanger?
Copper brazed plate heat exchangers provide efficient heat transfer with a small footprint. They are maintenance free, provide a long service lifetime and can withstand high temperatures and extremely high design pressures. They are used in a range of duties including cooling, heating, evaporation and condensing.
How can I improve my cooling tower performance?
– Piping Change. Simple repairs like a change to the water piping can help you mange your energy consumption. …
– Focus on Recycling. …
– Periodically Inspect all Equipment. …
– Increase Cooling Cycles.
Why is plate heat exchanger used?
The plate heat exchanger (PHE) is a specialized design well suited to transferring heat between medium- and low-pressure fluids. Welded, semi-welded and brazed heat exchangers are used for heat exchange between high-pressure fluids or where a more compact product is required.
What can go wrong with a heat exchanger?
Some of the most common heat exchanger problems for many process plants include the following; … Increasing exchanger energy consumption. Pass Partition bypassing (thermal leakage) Air cooler air recirculation.
How do I know if my plate heat exchanger is blocked?
– Increased pressure drop from inlet to outlet.
– Loss of heat transfer efficiency.
– Loss of flow and performance.
– Process fluid leakage.
How do you clean a secondary heat exchanger?
How do you remove scale from a cooling tower?
Hydrochloric Acid. Also known as aqueous hydrogen chloride or muriatic acid, hydrochloric acid is a traditional, effective approach for cleaning scale from water-cooled condensers and cooling towers. When water is heated or evaporated, scale often is left behind.
Don’t forget to share this post 
References and Further Readings :
