Wednesday, December 15, 2010
【 Weak current College 】 dynamic flow balancing valve performance analysis---Power By 【 China power house network 】
In air conditioning and heating system, as the transmission and distribution of energy water circulation system of hydraulic balance is very important. A balance of hydraulic system is to meet user needs, save energy consumption.
In air conditioning and heating system, cold (heat)-borne by closed pipe system transportation and distribution to all users. For a well-designed network system, each user in the Terminal control valves (electric control valve, control valve, etc.) in turn on degree is at 100% you should have access to design water and the end user in the control valve to open degree change both to get the required flow and do not disturb each other. This water system is a hydraulic balance of the system, otherwise it is hydraulic imbalance system, hydraulic imbalance also known as the hydraulic failure.
Hydraulic offset generally consists of a static imbalance and dynamic imbalance. The so-called static imbalance also called homeostasis. The system, each user in design mode, the actual flow and design flow. This hydraulic imbalance is fundamental, if not addressed, the impact is always present. For constant flow system, this imbalance can be static or dynamic balancing valve, balance valve, the difference is that they need to be adjusted with the instrument, while the latter is not required. The so-called dynamic imbalance also known as the stability of the disorder. The system, when some users of water changes (turn off or regulation), will cause the system's resistance distribution changes, causing the other user's flow with the change. This hydraulic imbalance is random changes, dynamic. This imbalance static balance valve cannot be resolved, can only be used to address the dynamic balance valve.
For example: a building of six floors, if not installed dynamic flow balancing valve, the water system in actual operation will dynamic imbalance. In the air conditioning cooling season, the first two-story room» too cold, three-and four-layer design for comfortable rooms just reached temperature, five-six room is too hot. Conversely, the heating season, the first to the second floor of the room is too hot, the three-and four-layer design for comfortable rooms just reached temperature, five-six room is too cold. Install dynamic flow balancing valves, whether it be a ~ all use six layers room or only some rooms with air conditioning, all rooms can be reached the design temperature.
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