Commissioning and operation of air-conditioning water system in purification engineering
Commissioning and operation of air-conditioning water system in purification engineering
Check the variable air volume air conditioners, fresh air units and fan coil units to see if there is any foreign matter in the tray. If there is, you should clean it up first; close various valves on the inlet and return water pipelines, and check whether the rotation is through the crank. Flexible, check the operation of the water pump and whether the steering is correct;...
Text label: Design and installation of purification engineering, purification engineering company, commissioning and operation of air-conditioning water system
Commissioning and operation of air-conditioning water system of purification project
Check the variable air volume air conditioners, fresh air units and fan coil units to see if there is any foreign matter in the tray. If there is, you should clean it up first; close various valves on the inlet and return water pipelines, and check whether the rotation is through the crank. Flexible, check the operation of the water pump and whether the steering is correct; start the water supply pump or directly use tap water to supply water, generally follow the direction of water flow for positive water supply, and then according to the system settings, first open the main valve of the water distributor to control a system, see Check whether there is any water leakage in the section from the main valve to the floor control valve of the corridor. If so, drain the water for repair, then open the floor control valve, and check the control valve to the valves on the inlet and return water branches of the inner unit coil, and check the entire floor. If there is any leakage, mark it as soon as possible, then close the valve, drain the water and repair it again, and then try again until the system does not leak; after the system is filled with water and there is no leakage, the system can be greatly improved. Check whether the flow and head of the circulating water pump meet the design requirements. After running for half an hour, open the filter on the main return pipe, remove the filter screen, and remove the dirt.
The water pump is linked with the main unit, first start the circulating water pump, then turn on the main unit, after reaching the design temperature, turn on each fan coil unit, unscrew the manual air release valve on the fan coil unit by hand, release the accumulated air, and clean it up Check the cooling effect of the fan coil unit when the filter on the water pipe is dirty. After the whole system is running, check the condensed water in the fan coil unit tray to see if the drainage is smooth. If there is water accumulation, check the pipeline. , readjust the slope. In the HVAC water system, hydraulic imbalance is the most common problem. Due to hydraulic imbalance, the flow distribution of the system is unreasonable, and the flow in some areas is excessive, and the flow in some areas is insufficient, resulting in some areas that are not hot in winter and not cold in summer. In some cases, the cold and heat delivered by the system are unreasonable, and the corresponding regulating valve must be used to adjust the flow distribution of the system. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for purification projects and GMP workshops.
Some general valves such as globe valves, ball valves, etc. also have a certain adjustment ability, but due to their poor adjustment performance and the inability to measure the adjusted flow, this adjustment can only be said to be qualitative and inaccurate. It often brings great inconvenience to the commissioning work and operation management after the installation of the project; the hydraulic balance valve is used to adjust the flow distribution of the system. The hydraulic balance valve has good adjustment characteristics. It has the characteristics of branch line flow. When the pressure difference between the two ends of the valve remains unchanged, the flow rate and the opening degree are linear. The flow through the hydraulic balance valve can be measured on site through a special flow measurement instrument.
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