1、1 中文 4160 字 英文 原文 How Air Conditionersenergy conservation technology research 1. Introductions The energy conservation may say is the building character automatic control system starting point and the home to return to. It is well known, in the intelligent construction, HVAC (heating, ventilates and
2、 air conditioning) the system consumes to have to occupy the building consumption total energy enormous partial proportions, approximately about 50% 60%. Specially cold: East the unit, the cooling tower, the circulating water pump and the air conditioning unit, the new atmosphere unit, all are consu
3、mes energy the big household. Therefore really has essential develops one effective air-conditioning system energy conservation method, especially uses is in improves in the existing building air-conditioning system automation the aspect. DDC (Directdigitalcontr01) the direct of numerical control, i
4、s a structure simple operation easy control device, it may borrow by the connection switches over the equipment to make the systems control along with the load change, like the air conditioning cold water circulatory system, the air conditioning box frequency conversion automatic amount of wind adju
5、stment and the cooling tower radiation ventilator frequency conversion holds controls and so on, may let an air-conditioning system more effective revolution, like this, not only brings the very big economic efficiency for the estate management, moreover also may cause the system to move under a bet
6、ter operating mode, thus lengthens the equipment the service life as well as achieved provides goal of the comfortable air conditioning environment and the energy conservation. The general building commonly used air-conditioning system has CAV, VAV, VWV and so on, respectively has differently holds
7、controls the way, all may use DDC to control. 1） decides the amount of wind system (ConstantAirVolume, is called CAV). Decides certainly the amount of wind system the amount of wind which blows out for the air conditioner certainly, provides coldly (is warm) the gas which the air conditioning region
8、 needs. When air conditioning region load variation, then changes the blast temperature to deal with in the room to shoulder, and achieves the 2 maintenance indoor temperature to the comfortable area request. The commonly used central air-conditioning system is AHU (air conditioner) and the cooling
9、water pipe system (the FCU system). These two generally decides the amount of wind (CAV) to supply the air conditioning area, in order to deal with in the room the partial loads change, decides the amount of wind system in AHU to change warm by the air conditioner blows of processes, controls in the
10、 general FCU system by cold water valve ON/OFF adjusts the blast temperature. 2） changes the amount of wind system (VAV) Changes the amount of wind system (VarlableAirVolume, is called VAV) is the air conditioner (AHU or FCU) may move changes the amount of wind. The commonly used central air-conditi
11、oning system is AHU (air conditioner) and the cooling water pipe system FCU system. These two generally decides the amount of wind (CAV) to supply the air conditioning area, in order to deal with in the room the partial loads change, decides the amount of wind system in AHU to change warm by the air
12、 conditioner blows of processes, controls in the general FCU system by cold water valve ON/OFF adjusts the blast temperature. However these two has wasted the massive energy on the blast system. Because in long-term low load time the air feeder also carries out the entire amount of wind revolution t
13、o consume the electricity, this not only is not easy to maintain in the stable room humidity the condition, also wastes the massive blasts revolution energy. Changes the amount of wind system is aims at the blast system to consume the electricity shortcoming the energy conservation countermeasure. 3
14、） changes the current capacity system (VWV) So-called changes the current capacity system (VariableWaterVolume, is called VWV), is enhances the heat source machine by the certain water temperature supply air conditioner the efficiency, but changes by the special water pump delivers the water volume,
15、 while convenient achieves saves the effect which the water pump uses electricity. Changes the water volume system to depend on the water pump to the water pump system energy conservation efficiency the control mode and the VWV use proportion but different, whether there is the general VWV control m
16、ode section speed change (SP) and the bidirectional valve control mode. Above three kind of air-conditioning system is the present building air conditioning most often the system which designs. The central air conditioning control also is the pipeline, the fitting, the valve body or the valve centra
17、lism hypothesis control fluid provides the air 3 conditioning. Therefore effectively combines the central air conditioning control namely to be able the active control to consume energy, the design conforms with the energy conservation the air-conditioning system. In recent years, the our country ma
18、jority of areas, in particular southeast the coastal area summer the air conditioning energy consumption suddenly was rising, the air conditioning uses electricity the tendency which increases sharply to cause the electrical network power supply to be intense. Statistics have indicated, our country
19、every year the burning hot season air conditioning consumed the electricity to occupy 1/3 in recent years which the entire society uses electricity, the massive electrical energies swallow by the industry and the civil construction air conditioning, in particular large-scale construction central air
20、-conditioning system, like each kind of commercial construction (office, market, hospital, hotel and so on) central air conditioning because its space big, person current capacity many, operation time long, management complex characteristic, causes the movement energy consumption to be quite high, t
21、he commercial construction air conditioning energy consumption nearly occupies its total energy consumption 50%. The central air conditioning design capacity is according to the biggest load computation, but in a major part building year only has several dozensdays time central air conditioning to b
22、e at the biggest load condition. The central air conditioning cold load throughout is in during the dynamic change, like every day sooner or later, each season in turn, every year samsara, the environment and the humanities condition, real-time will be affecting the central air conditioning cold loa
23、d. General, it also gives the general energy conservation control domain the worker brought enormously has displayed the talent the space. The power load gap increases, the electric power supply tense aspect with difficulty obtains in recent years relaxes. Therefore, energy conservation in particula
24、r electricity saving, not only has the significant social significance moreover to have the urgent practical significance. Positively studies the development promotion green environmental protection new air conditioning technology and the equipment, the suppression air conditioning energy consumptio
25、n increases, has become the building warmly to pass air conditioning domain urgent and the popular research topic. The dependence technology innovation, the system innovation, the energy conservation falls consumes, enhances the energy use efficiency, guaranteed are least in the energy consumption, in the environmental pollution smallest foundation, realizes the
