static volume pressure 中文意思是什麼
static volume pressure
解釋
靜態容積壓-
This paper establishes a model simulating dam actual placing process and considering the non - continuity of initial temperature on the boundary of new and old concrete, daily air temperature change, concrete - placing temperature, hydration heat, heat insulation on boundary, water - storing process, placing intermission and curing with water. the calculation of stress field considers the concrete weight, static water pressure, thermal stress, different autogenous volume change between rcc and normal concrete, change of elastic modulus of concrete with age and creep action
考慮了乞今最為全面的初始條件和邊界條件，包括模擬壩體的實際升程過程，考慮了新老混凝土接觸面上的初始溫度不連續，逐日的氣溫變化，混凝土的入倉溫度，水化熱溫升，邊界保溫，水庫蓄水過程，澆築間歇以及灑水養生等因素；應力場的計算考慮了混凝土的自重，靜水壓力，溫度應力，常態混凝土與碾壓混凝土不同的自生體積變形，混凝土的彈性模量隨齡期的變化以及徐變的作用。 -
It has a long history using a throttle device to measure the flow volume of fluid in pipe the method has formed normalization at home and abroad the principle is to make the flow bunch form the particial shrink at the place where the throttle part is located so as to produce a static pressure difference then measure and calculate the flow volume at the moment when the fluid is flowing through the throttle device by the static pressure measured this method is based on the law of conservation of energy and the equation of flow continuity
用節流裝置測量管道中流體流量已歷史悠久，在國內、國際上都已標準化，其原理是使流束在節流件處形成局部收縮，產生靜壓力差，通過測量靜壓力差來衡量流體流過節流裝置時的流量大小，這種測量方法是以能量守恆定律和流動連續性方程為基礎的。 -
Genetic algorithm is used to optimize the parameters of pid controller that is used to control the plant lon ( local operating network ) is designed to control vav air - conditioning system. by this means the static pressure control and minimum total supply air volume control are experimented. the paper analyzes the coupling among loops, the whole system ' s stability and energy saving effect under the two control methods
針對目前變風量空調系統的模型都是用機理建模方法建立的情況，本論文用最小二乘法對機組部分進行系統辨識，建立了水閥?送風溫度、變頻風機?靜壓兩個迴路的模型，經驗證比較接近實際系統；採用遺傳演算法對pid控制器的參數進行尋優，尋優結果令人滿意；設計了變風量空調系統的lon控制網路，以此為實現手段，進行了定靜壓控制和最小總送風量控制，並在兩種控制方式下，分析了各個迴路的耦合情況、兩種控制方式的穩定性和節能效果。 -
Three valve units that volume is small, weight is light, structure is simple, strong and durable, parts exchangeability is good. fpr temperature, static pressure variation and impulse the whole device have reliable stability, apply for 1151, 3051, fc, k, cfc, sbcc every series differential pressure transmitter : flow transmitter products coordinate usage, can be installed on the product and with product form integratization, has simplified product installation structure
三閥組體積小重量輕結構簡單堅固耐用，零部件互換性好，整體裝置對溫度和靜壓變化及沖擊有可靠的穩定性，適用於1151 3051 fc k cfc sbcc等各系列差壓變送器，流量變送器產品配套使用，可直接安裝在產品上，與產品成一體化，簡化了產品的安裝結構。 -
Three valve manifold that volume is small, weight is light, structure is simple, strong and durable, parts exchangeability is good. for temperature, static pressure variation and impulse the whole device have reliable stability, apply for 1151, 3051, fc, k, cfc, sbcc every series differential pressure transmitter : flow transmitter products coordinate usage, can be installed on the product and with product form integratization, has simplified product installation structure
體積小重量輕結構簡單堅固耐用，零部件互換性好，整體裝置對溫度和靜壓變化及沖擊有可靠的穩定性，適用於1151 3051 fc k cfc sbcc等各系列差壓變送器，流量變送器產品配套使用，可直接安裝在產品上，與產品成一體化，簡化了產品的安裝結構。 -
By means of variable frequency and adjustable speed, the variable air volume air conditioning automatic control system saves energy through setting different static pressure values in different time periods
變風量空調控制系統以變頻調速為手段，分時段設定靜壓值以實現節能。 -
The paper studies the static pressure control and minimum total supply air volume control of vav air - conditioning system by experiment at present vav air - conditioning system are all modelled by the method of mechanism analysis
本論文對變風量空調系統中的定靜壓控制和最小總送風量控制進行實驗研究。 -
The experiment ' s results show that the system is stable under the static pressure control and energy saving under the minimum total supply air volume control. although the terminal dampers ' s tuning time is prolonged under the minimum total supply air volume control, it can be reduced by adopting the appropriate sampling time when debugging the system. from all of this we can conclude thart the minimum total supply air volume control has a good application perspective
實驗結果表明，定靜壓控制方式下系統較為穩定，最小總送風量控制比定靜壓更加節能，但它延長了末端閥位的調節時間，在系統調試時，我們可通過選擇合適的采樣時間來縮短閥門的調節過程，所以最小總送風量控制具有廣闊的應用前景。
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