According to the “Ventilation and Air Conditioning Engineering Construction Quality Acceptance Specification” GB50243-2016 Article 4.2.3 stipulates that: the thickness of the steel plate of the air duct of the smoke exhaust system can be determined in accordance with the high-pressure system, and at the same time, it is clear that the thin sheet steel flange rectangular duct shall not be used for high-pressure air ducts. Then the point of contention: smoke exhaust system duct is a high-pressure system duct, in the end, thin steel plate flange connection can not be used for smoke exhaust system?

In the central air-conditioning chilled water, cooling water, condensate three water systems, the general design of the chilled water and cooling water systems pay considerable attention to the construction of the construction of quality management and pressure testing and other aspects of the construction is also done more considerate, running for some time after the problem of less, and the condensate system is relatively poor attention to some of the hotel building most of the air-conditioning end installed in the ceiling, due to the condensate discharge problems Problems of lagging, often in the wet ceiling damage can only be found after the problem, so the discharge of condensate should also attract sufficient attention.

Used to control the high pressure or exhaust pressure. When the pressure in the system exceeds the set safety value, the high pressure controller will shut down the compressor to prevent the excessive pressure from damaging the system or causing safety problems.

This meeting was organized by the China Machinery Industry Federation, from China Machinery Industry Group Corporation, China Refrigeration and Air Conditioning Industry Association and Qingdao University of Science and Technology of the nine authoritative experts in the industry after listening to the project report, reviewing the relevant information and inspecting the products and production process video, unanimously agreed that the above two projects of the scientific and technological achievements of the international leading level.

It consists of speed fan and heat exchanger coil two parts, fan is generally composed of forward tilting blade and low noise motor, generally three wind speed, motor for the tapping speed, by speed switch on different tapping, control the motor operating voltage to realize the speed control. Coil is a high-efficiency finned heat exchanger, which is made of purple copper tube and hydrophilic aluminum fins by high-pressure expansion, and it is the component of cooling and heating air, in addition to condensate tray, air filter and other accessories.