BIS Certification for Heat Exchanger |Finned Type|

 Finned heat exchangers are devices that facilitate heat transfer between fluids and substances. The fins are attached to a series of tubes. These fins have the primary purpose of increasing the area of the heat exchange surface, which results in an efficient heat exchange between fluids. This blog will explain how to obtain BIS certification for heat exchanger.

A Look at the IS 11329, an Indian Standard for Finned-Type Heat Exchanger

IS 11329 standard covers finned heat exchangers for room air conditioners. The standard outlines general requirements and test procedures for manufacturing various types and sizes of air conditioners.

This standard addresses the design and construction of finned heat exchangers that are used in both heating and cooling room air conditioners.

Classification by Construction Method

The following are the categories of heat exchangers according to their construction methods:

Fin pack with collar and tube type, and Microchannel tube having continuous-fin type.

It is important to thoroughly test all heat exchangers in each class.

IS 11329 specifies that the tubes used in heat exchangers should be made of either aluminum or copper and meet specified standards. The aluminium tube material must comply with IS737 while the copper tube should comply with IS10773.

The fins used in heat exchangers should also be made from aluminium, and conform to all relevant standards. The fins’ visible surfaces must be free of any imperfections, including porosity, inclusions, and puncture points.

Rubber grommets and plugs are required to seal the ends of the tube inlet and outlet on the heat exchanger. This sealing mechanism is essential for the efficiency and integrity of the heat exchanger process.

Testing to Qualify for BIS Certification of Finned Heat Exchangers

Manufacturers must perform the following tests to be eligible for BIS certification for Finned Type heat exchangers:

• Test for corrosion resistance
• Test for burst
• Fatigue strength test
• Construction Test
• Test for leaks
• Contamination of the Internal Organs

Highlighting The Labelling And Marking Norms For Fined Type Heat Transfer

The standard requires that every finned heat exchanger designed for room air conditioners be marked with specific information. The Standard Mark (ISI Mark), which is a designation of the ISI, can also be applied to finned heat exchangers designed for room air conditioning.

If the product meets the requirements of this standard and the Rules and Regulations that accompany it, it may be certified under the Bureau of Indian Standards Act of 2016, and its Rules and Regulations. The product(s), therefore, can be marked with a Standard Mark (ISI Mark).

For the Standard Mark to be used, the manufacturer will need a BIS License from the Bureau of Indian Standards (1). This license will only be granted if the manufacturer’s manufacturing infrastructure, testing capabilities, quality control measures, and production processes are evaluated.

Documents required for BIS certification of finned type heat exchanger

Documentation required for BIS certification is typically:

1. Application Form: This is a fully completed form that the BIS provides. It contains information such as the name of the applicant, their address, the product details, and the certification they desire.

2. Test Reports: Reports of BIS-recognized labs, which demonstrate the product’s conformity with the Indian Standard.

3. Technical Documents: Specifications or drawings of the finned heat exchanger.

4. Quality Control Manual — A document that outlines the quality control processes and procedures of a manufacturer to ensure product consistency.

5. Manufacturing Unit Detail: Details about the manufacturing unit including its infrastructure, facilities, and quality control measures.

6. Trademark registration: If a product bears a registered trademark, it may be necessary to provide a copy.

7. Registration Fee: This is the prescribed fee for the BIS Certification process. It varies depending on the product categories and certification schemes.

What is the process of BIS certification for finned-type heat exchangers?

The following steps are required to obtain BIS (Bureau of Indian Standards), certification for a finned heat exchanger:

1. Find the Indian Standard that Applies

Find the Indian standard that applies to finned heat exchangers.

2. Prepare the Required Documentation

The paperwork includes the application form completed, the test report from a BIS-recognized laboratory, the technical documents, the quality control manual, the details of the manufacturing unit, Trademark registration (if applicable), as well as the prescribed registration fees.

3. Submit the Application

Make sure the application form and supporting documents are filled in accurately. Submit them to the BIS or submit them online.

4. Evaluation Process

The BIS will review your application and carefully review all the documentation you have submitted. They will also conduct an assessment of infrastructure, facilities, and quality control measures in your manufacturing unit.

5. Testing and Inspection

The BIS can conduct tests and inspections to verify the finned heat exchanger’s compliance with the applicable Indian Standard.

6. Certificate Grant

The BIS will certify your finned heat exchanger if it meets the required requirements and passes the evaluation. The BIS will issue you the certificate, and if applicable, allow you to display the Standard Mark ISI Mark.

Renewal of BIS certification is required to maintain its validity. Keep up to date with all revisions and changes to the Indian Standard. Maintain compliance by adhering to quality control measures.

Final Thoughts:

Refer to BIS guidelines or seek advice from BIS officials to ensure that your finned heat exchanger is BIS-certified.