Easiest way to clean a Plate Heat Exchanger (PHE) - Case Study

Plate heat exchangers are an important component in a variety of industries, such as chemical, food processing, and HVAC systems, among others. They are used for transferring heat between two fluids that are separated by a thin metal plate. Over time, these plates can become fouled with mineral deposits, scaling, and other contaminants, leading to a reduction in efficiency and potentially, costly downtime for cleaning. Ultrasonic cleaning is an effective and efficient way to clean plate heat exchangers. Ultrasonic cleaning is an effective, non-damaging, environmentally-friendly, and cost-effective method of cleaning plate heat exchangers. Its ability to remove stubborn contaminants from even the tiniest crevices and cavities of the plates makes it an ideal choice for industries that rely on plate heat exchangers. By using ultrasonic cleaning, businesses can ensure that their plate heat exchangers operate at peak efficiency, reducing downtime and saving money in the long run.

Ultrasonic cleaning is a process that uses high-frequency sound waves (typically above 20 kHz) to agitate a cleaning solution, which then dislodges and removes contaminants from the surface of an object. The process involves immersing the object to be cleaned in a tank filled with a cleaning solution and then introducing ultrasonic waves into the solution. The waves create millions of tiny bubbles that implode when they come into contact with the object, releasing energy that dislodges dirt and other contaminants.

Why Ultrasonic Cleaning is Ideal for Plate Heat Exchangers

The ultrasonic cleaning process is very effective in removing stubborn contaminants, such as mineral deposits, rust, and scaling, from the surface of plate heat exchangers. The high-frequency sound waves penetrate even the tiniest crevices and cavities of the plates, ensuring a thorough and deep cleaning. This means that plate heat exchangers can be cleaned quickly and effectively, without the need for manual scrubbing or harsh chemicals.

Ultrasonic cleaning is a gentle process that does not damage the surface of the plates, unlike other cleaning methods that can cause scratches, pitting, or erosion. The cleaning solution used in ultrasonic cleaning is usually a mild alkaline detergent that is gentle on the metal surface, yet powerful enough to remove contaminants. Additionally, the process does not involve any high-pressure water jets or abrasive brushes, which can damage the plates.

Customers Criteria: Free from all contamination
Material: Steel
Component: Plate Heat Exchanger
Contamination prior to cleaning: Staining / Scale
Total number off: 2
Number off per run: 1

Ultrasonic Cleaner Cleaning Fluid Temperature(s) Concentration
Kemet 12 Solvit 4 40°C 40%
Kemet 12 Tap water 50°C 100%
Versa 120 Dryer N/A 70°C 3 minutes

Process for cleaning plate heat exchanger:

The plate heat exchanger was cleaned in a small bench top unit (Kemet 12) placed standing up, the reason being the high concentration. The bath was filled with tap water then diluted with the cleaning fluid Solvit 4. The part was placed standing up and set for a cycle time of 1 hour, the part was then rinsed and inspected. One side had fully cleaned up, with all the scale removed. The other side has changed colour slightly but still heavily contaminated/stained. The part was cleaned in 60 minutes cycles until 100% clean. It took a total time of 8 hours in the ultrasonic to fully clean both sides with no staining/scale remaining.

% Satisfactorily Cleaned: 100%

Comments: Using a higher concentration will reduce cleaning times.

Ultrasonic cleaning is an environmentally-friendly method of cleaning plate heat exchangers. The cleaning solution used is typically biodegradable, and the process does not generate any hazardous waste. Additionally, the process uses less water and energy than other cleaning methods, making it a more sustainable option. Ultrasonic cleaning is a cost-effective method of cleaning plate heat exchangers. The process is fast and efficient, meaning less downtime and increased productivity. Additionally, because the process does not involve harsh chemicals or abrasive brushes, there is less wear and tear on the plates, resulting in longer lifespans and fewer replacement costs.

Before cleaning Plate Heat Exchanger

Before cleaning Plate Heat Exchanger

After cleaning Plate Heat Exchanger

After cleaning Plate Heat Exchanger

kemet ISO 9001

BSI number Q05919

Over 85 years of service to industry

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