Air conditioner, a type of air conditioning system. A standardized product assembled with compressors, evaporative cooling coils, condensers, filters, motors, fans, and automatic control devices. Short for air conditioner, also known as air conditioning unit. Air conditioners come in various forms, are flexible to use, compact in structure, and easy to install; The disadvantage is that the humidity control accuracy is not high, and the filter can only remove large dust particles. In multi room buildings, the maintenance workload is large, and it is not suitable for rooms with strict requirements for noise and vibration. Commonly used air conditioners include room air conditioners and cabinet air conditioning units. The former has a cooling capacity of 1600 to 4000 kcal per hour, while the latter has a cooling capacity of 104 to 3 kcal per hour × 105 kcal. Air conditioners are divided into water-cooled and air-cooled according to their assembly methods; Classified by installation location into floor mounted, wall mounted, ceiling mounted, and window mounted; According to their functions, they can be divided into constant temperature and humidity units (see figure), air coolers, heat pump units, dehumidifiers, dedicated air conditioning units for electronic computer rooms, purification air conditioning units, and low-temperature units. A heat pump can draw heat from a lower temperature heat source to heat a higher temperature room. When used in reverse, it can draw heat from a lower temperature room and discharge it into a higher temperature atmosphere, so it can also be used as a refrigerator. The heat pump unit changes the flow path of air in the heat pump system by rotating the four-way directional valve, achieving heating to the room in winter and cooling to the room in summer; Or used for heating one part of the room and cooling another part of the room. This type of unit should be used when the cooling load in summer is roughly equal to the heating load in winter, in order to have better economic efficiency Scope of application
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 problemsBaijian 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