2) auxiliary engine energy conservation: Each kind pumps the kind (freezing to pump, cold water pump, air blower and so on) the movement energy conservation. Uses has the space vector control the  frequency conversion velocity modulation way, changes  the proportioning pump  the variable displacement pump. Auxiliary engine energy conservation many to 40% 3) optimizes the auxiliary engine movement pattern: Generally when  full load pumping machine needs  the  full  speed  movement,  has  not  conserved  energy  the  space,  but  uses  the  redundant technology  and  the  frequency  conversion  technology  unifies,  the  proportioning  pump  and  the variable displacement pump coordinate, the optimized movement pattern, may cause the auxiliary engine unit to synthesize the energy conservation. 4) multi- parameters non-linearity control: This system  for multi- parameters, when changes, the nonlinear system,  take  the computer as  the control method, designs a set  to have  from seeks  the stable  security  control  system  which  the  superior  auto-adapted  intelligent  control,  the  function consummates This  central  air  conditioning  dynamic  load  track  energy  conservation  control  system,  with  the central  air-conditioning  system  necessary  use,  may  realize  the  central  air-conditioning  system highly  effective  energy  conservation,  the  effect  is  remarkable. After  the  theoretical  calculation, compares  with  the  permanent  current  capacity  central  air-conditioning  system,  whole  year  the average electricity saving rate may reach 20%-30%. This project technology content is high, is the collection  warmly  passes  the  air  conditioning  technology,  the  refrigeration  technology,  the intelligent  control  theory and  the computer control  technology  is a body central air conditioning highly effective energy conservation system. 4. systems characteristics 1)  entire  closed  loop:  The  central  air  conditioning  main  engine,  the  auxiliary  engine,  the circulatory  system  and  so  on  took  the  whole  constitution  energy  conservation  control  system, seeks  one  kind  of  best  control  rule,  causes  the  central  air  conditioning  main  engine,  the  cold intermediary current capacity system all along with to shoulder Q the change to change, is for the purpose  of  satisfying  the  air  conditioning  area  comfortableness  to  have  to  shoulder under  the Q premise, realization overall system greatest degree energy conservation. 2) moves stably, safe: Optimized the main engine movement pattern, may solve the main engine to open stops the question, reduces the surge current, reduces the electrical network demand capacity; Uses  softly  opens  stops with  the  low  frequency movement  water  pump,  the  air  blower,  avoids opening  stops  attacks  the  electrical  network  and  reduces  the  equipment  machinery  to  wear, lengthens the useful life of equipment.  3)  long-distance  control: 
Through  long-distance  communication  connection  and  computer connection, realization long-distance control, running status visible.  4)  system  adaptability  strong: This  electricity  saving  system may with  the  new  clothing  central air-conditioning system or with  the old attire central air-conditioning system necessary use, does not  change  the  original  system  the  installment,  the  system  connection  is  simple,  the  electricity saving system increase and the unloading cuts conveniently, does not have the impact. This system area is small, the overall system movement does not need to nurse, the low noise, not to have the unusual smell; Conserves energy, the environmental protection high is good; Does not produce the deleterious substance, not good has not affected to the environment. 5）  forecasts  equipment  system  invests  the market,  if  every  year  has will  surpass  200  sets  of products  completely  to  install  is  bigger  than  50,000  m2  in  the  floor  space  in  the  commercial construction  central  air  conditioning  engine  room,  it  saves  the  electric  quantity  to  be  equal  to every  year  newly  built  50,000  kW  power  plant,  descrease  the  peak    will  use  electricity  to  the summer  electrical  network  also  plays  certainly  alleviates  the  role,  truly will  realize  the  society sustainable coordinated development. 空调节能技术英文文献和中文翻译(7):http://www.751com.cn/fanyi/lunwen_31576.html