Heat exchange is the process of heat transfer between two objects or parts of the same object caused by temperature difference. Heat exchange is generally achieved through three methods: heat conduction、 heat convection、 and heat radiation. Heat exchange、 also known as heat exchange. The process of transferring heat energy from a hot fluid indirectly (such as through a partition) or directly to a cold fluid. The properties are complex、 and it is necessary to consider not only the heat conduction through the partition wall、 but also the convective heat transfer of the fluid on both sides of the partition wall、 and sometimes radiation heat transfer. The heat exchange problem often encountered in the chemical industry is usually not high in temperature、 but there are many types and calculations are also very complex. There are three main types of heat exchange methods in industry: wall type、 regenerative type、 and hybrid type P>
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific、 fair、 and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsinspection and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered、 meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing、 with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle、 low cost、 and attentive service 7. Possess authoritative qualifications such as CMA、 CNAS、 CAL、 etc 8. The testing report is authoritative and effective、 and is generally used in China