水力失调和水力平衡的讨论研究

关于水利失衡的研究(英文)

Hydraulic disorders and balanced discussion on

hydraulic

[Abstract] HVAC works in the building, the regulation of water balance is an important issue. In this paper, static and dynamic balance hydraulic hydraulic balance the concept of combining two kinds of hydraulic and the characteristics of balance, Analysis of the traffic flow system and the system changed several typical way of hydraulic equipment balance the choice and implementation of water balanced manner.

[key words] Hydraulic disorders; Steady ; Operation Condition ; The number of resistance 1 Hydraulic disorders and the concept of water

balance

In hot water heating system and chilled water air-conditioning system in the thermal (cold) the user's actual traffic flow and design requirements as the inconsistency between the users of water imbalance.

Hydraulic disorders can be the extent of the actual traffic flow and design requirements to measure the ratio of X, X said an imbalance of water.

X = QS/QJ（QS：The actual user traffic，QJ：The design requirements of the user traffic）

Hydraulic balance refers to the network of users in all other users of changes in traffic flow to maintain unchanged the ability of their own, usually with hydraulic stability of the user's coefficient r to that.

ｒ=1/ XMAX = QJ/ QMAX （QJ：The design requirements of the user traffic ，QMAX：The largest user traffic ）

2 Hydraulic hydraulic balance disorders and the classification

2.1 Static and passive hydraulic hydraulic balance disorders As the design, construction, equipment and other material reasons for the resistance of the pipeline system and design requirements than the number of channels of resistance ratio of inconsistency, So that the actual system user traffic flow inconsistent with the design requirements, arising from the hydraulic system disorders, called the static water imbalance.

关于水利失衡的研究(英文)

Static hydraulic imbalance is the steady, fundamental, is inherent in the system itself, is China's HVAC water in the hydraulic system disorders an important factor.

Through the pipeline system in additional static balance hydraulic equipment (hy -draulic balance valve) of the pipeline system to regulate the ratio of resistance to the pipeline design requirements of the same ratio of resistance , At this time when the system throughput to meet the design flow, the flow of terminal equipment are also to meet the design flow, static hydraulic system to achieve balance.

2.2 Dynamic imbalance of hydraulic and dynamic water balance

When a user opened the valve of changes in water flow changes, other users of the flow also will be changed, from design flow, resulting in an imbalance of water, called hydraulic dynamic imbalance.

Hydraulic dynamic imbalance is dynamic and changing , it is not inherent in the system itself, the system is in the process of the operation.

Through the new pipeline system in the dynamic balance of hydraulic equipment (flow regulator or pressure regulator) , when other users valve opening event of a cha -nge, Dynamic hydraulic equipment through the balance of shielding, so that the flow is not followed its own changes, terminal equipment does not interfere with each other traffic, when the hydraulic system to achieve dynamic balance.

3 The flow of the hydraulic system of balance

The flow of hydraulic balance HVAC system design is common in the hydraulic system, in the process of running the entire traffic system remained unchanged. Com -monly used in the following two forms:

3.1 Complete system for traffic

Complete set flow system is in the system without any dynamic valve, the system after the completion of commissioning in the early opening of the valve not to make any changes, The entire system to always maintain a constant flow. Full flow system will apply mainly to terminal equipment do not have to adjust to flow through the system, If the end of a three-speed fan coil switch regulating wind speed and the use of variable air volume air handling units of air-conditioning systems and lower system requirements, Just climate heating water temperature compensation for adjustment to meet the basic needs of the heating system.

关于水利失衡的研究(英文)

Complete set flow hydraulic system exists only static imbalance , and there is no hydraulic dynamic imbalance , the only static in the relevant parts installed hydraulic equipment can be balanced.

Usually in the engine room catchment system installed on the hydraulic balance valve; water for air-conditioning system that can return to the building each floor level of water pipes installed on the hydraulic balance valve. Figure (1-5).

For some systems, although not contain any dynamic valve, but not through other means to regulate non-flow, Therefore, in actual operation of users because of a cold or overheated rooms and change the valve opening to change the flow, so that this system can be set between traffic and variable flow between

3.2 Single-tube series (with the bypass) heating system

One-pipe heating system including the series of vertical double-standard onepipe system and vertical series single-tube systems . This system will remain basi- ically unchanged in charge of traffic, is scheduled traffic system. The former as an example to illustrate the hydraulic system to achieve a balanced manner.

Such a system exists mainly static hydraulic imbalance in the level of branches on the two-or three because of the regulatory role of Wen Kongfa . There is a certain dynamic hydraulic imbalance . So just in the relevant parts of the hydraulic balance additional related equipment to enable the system to maintain water balance . Asfoll- ows:

(1) in the engine room catchment system installed on the hydraulic balance valv …… 此处隐藏：6311字，全部文档内容请下载后查看。喜欢就下载吧 ……