實驗室排風(fēng)系統(tǒng)工程
實驗室排風(fēng)系統(tǒng)工程
Laboratory airflow control speciality design requirements / 實驗室氣流控制系統(tǒng)設(shè)計要求
In any case, air should always flow from the office, the corridor and auxiliary areas into the lab area. And all chemical laboratory exhaust gas should be directly discharged to the outside, and mustn’t be recycled. Therefore, unless chemical laboratory is required to clean itself, its relative to other space within a building maintains negative pressure of the camp.
在任何情況下，氣流均應(yīng)從辦公室、走廊和輔助區(qū)域進入實驗室區(qū)域，所有化學(xué)實驗室排出的氣體均應(yīng)直接排放至室外，而不得循環(huán)利用。因此，除非化學(xué)實驗室本身有潔凈要求，否則其相對樓宇內(nèi)其他空間，均應(yīng)維持負(fù)壓。
Experiment indoor airflow should be from low risk areas to high risk areas. Generally speaking, it should keep the flow of gas 47 liters per second between the above area (170 cubic meters per hour). Office areas in a laboratory should always maintain a positive pressure relative to the corridor and laboratory.
實驗室內(nèi)氣流應(yīng)從低危險區(qū)域流向高危險區(qū)域。一般來說，應(yīng)維持上述區(qū)域之間47升/秒（即170立方米/小時）的氣流量。實驗室建筑的辦公區(qū)域，應(yīng)相對于走廊和實驗室始終維持正壓。
Under normal conditions, 6-12 times every hour’s room air changes are considered appropriate. When there is analysis equipment which is likely to produce high heat load or there is large local exhaust air in the room, there will be a need to increase in volume.
通常情況下，6-12次/小時的房間換氣次數(shù)都被認(rèn)為是合適的。當(dāng)實驗室內(nèi)有可能產(chǎn)生高熱負(fù)荷的分析設(shè)備，或房間內(nèi)有較大量的局部排風(fēng)時，則可能需要相應(yīng)增大換氣量。
The laboratory should adopt 100% full fresh air system, the central air supply unit and compensate laboratory exhaust demand.
實驗室應(yīng)采用100%全新風(fēng)系統(tǒng)，采用中央新風(fēng)機組送風(fēng)，并補償實驗室排風(fēng)需求。實驗室排風(fēng)不得循環(huán)利用于其它通風(fēng)需求。
In order to ensure the safety of the staff, keep the distance of discharge point and flat roof at least 3 meters (ten feet) or even higher in order to exhaust emissions and effectively diluted. The specific choice should be calculated to confirm.
為保證人員的安全，應(yīng)保持尾氣排放點距離屋頂平面最高點至少3米（即10英尺），甚至可能要求更高，以便尾氣有效地排放及稀釋。具體選擇應(yīng)經(jīng)過計算確認(rèn)。
Interpretation of variable air volume speciality / 解讀變風(fēng)量系統(tǒng)
In the large ventilation system, in order to solve the ventilation equipment at the end of the variable air volume demands and constant wind speed and to achieve further adjustment, we apply the frequency conversion and variable air volume ventilation control.
在大型通風(fēng)系統(tǒng)中，為了解決通風(fēng)設(shè)備末端的變風(fēng)量要求和面風(fēng)速恒定的要求，實現(xiàn)進一步調(diào)節(jié)。我們應(yīng)用變頻+變風(fēng)量通風(fēng)控制來解決。
Interpretation of the variable air volume speciality
解讀變風(fēng)量系統(tǒng)
Laboratory airflow control aims
實驗室氣流控制目標(biāo)
Security (Accord with the regulations and standards)
安全性（符合規(guī)范要求）
Local exhaust control
局部排風(fēng)控制
Regional pressure control
區(qū)域壓力控制
Energy-saving
降低能耗
Easy to maintenance and management
易維護管理
Availability and flexibility
系統(tǒng)靈活性
Adaptive control （Temperature and humidity）
舒適性控制（溫濕度）
Variable air volume control ventilation：Every country has strict requirements of the ventilation cabinet winds, For laboratory ventilation cabinet is the most important level of protective equipment. Generally we should always maintain constant ventilation counter wind speed of 0.5 m/s. Too high or too low surface wind speed can produce dangerous side leakage.
通風(fēng)柜變風(fēng)量控制：通風(fēng)柜作為化學(xué)實驗室內(nèi)最重要的一級防護設(shè)備，各國對于通風(fēng)柜的面風(fēng)速均有嚴(yán)格要求。通常要求始終維持通風(fēng)柜面風(fēng)速恒定為0.5m/s。過高或者過低的面風(fēng)速，均會產(chǎn)生泄漏危險。
Local exhaust control: Cover cabinet , atomic absorption, reagent cabinets and some other local exhaust control should be able to continuously and effectively control and discharge the exhaust gases quickly and securely.
其他局部排風(fēng)控制：對于萬象抽氣罩、原子吸收罩、試劑柜等局部排風(fēng)設(shè)施，應(yīng)能夠持續(xù)、高效地控制，安全迅速地將氣體排出。
Room pressure control: Generally we should maintain negative pressure of the laboratory relative to that of the corridor in order to avoid cross contamination of the office or production areas.
房間壓力控制：通常情況下要求始終保持實驗室相對于走廊的負(fù)壓，以免對周圍辦公或生產(chǎn)區(qū)域造成交叉污染。
Reduce energy consumption: On the premise of safety, significantly reduce energy consumption, including air conditioning and fan energy consumption.
降低能耗：在充分滿足安全的前提下，大幅降低運行能耗，包括空調(diào)以及風(fēng)機能耗。
The working principle of ventilation counter wind speed control
system / 通風(fēng)柜面風(fēng)速控制系統(tǒng)工作原理
1、Surface wind speed control system
continuously monitor s the actual exhaust air volume of the fume cabinet .
Calculate the average wind speed of the open area according to the height of the
window. When the exhaust pipe pressure changes or the window height changes, the
system responses within a second and adjust the opening of the air valve to keep
the average surface wind speed of the window open surface
stable.
面風(fēng)速控制系統(tǒng)持續(xù)地監(jiān)測通風(fēng)柜實際排風(fēng)量，根據(jù)視窗高度計算出視窗開口面積的平均面風(fēng)速，當(dāng)排風(fēng)管道壓力變化或視窗高度發(fā)生變化時,系統(tǒng)在≤1S的時間做出反應(yīng)，及時調(diào)整風(fēng)閥開度保持視窗開口面積的平均面風(fēng)速穩(wěn)定。
2、Under
different experimental conditions, we can set different parameters on the
panel.
不同實驗狀況時，可在面板上設(shè)置不同的參數(shù)。
3、The system controls surface wind speed at
a set speed ( 0.5m/s) through infrared detector when there is an operator in
front of the ventilation cabinet and the system automatically switches to
another value(e.g. 0.3m/s) to save costs when there is no operator in front of
the fume cabinet
.
系統(tǒng)通過紅外線監(jiān)測器當(dāng)通風(fēng)柜前有操作人員工作時面風(fēng)速控制在某一設(shè)定值（0.5m/s)，當(dāng)通風(fēng)柜前無人操作時，系統(tǒng)自動轉(zhuǎn)換到另一設(shè)定值（如0.3m/s)以節(jié)省運行費用。
4、When
ventilation cupboard door was off, the air valve maintains the minimum of the
ventilation cabinet exhaust air 1500MM , the ventilation cabinet
300CMH.
當(dāng)通風(fēng)柜門關(guān)閉后，風(fēng)量閥要維持通風(fēng)柜的最小排風(fēng)量,1500MM通風(fēng)柜為300CMH。
5、Due to the fault
surface wind speed is high or low, there will be sound-light
alarms.
由于故障面風(fēng)速過高或過低時有聲光報警。
6、When temperatures of ventilation cabinet
are high, there will be sound-light alarms.
通風(fēng)柜溫度過高時有聲光報警。
7、When the
position of the ventilation cabinet is too high, there will be sound-light
alarms.
通風(fēng)柜門位過高時有聲音報警。
8、When there is an exception, open the emergency
discharge mode control and the system will open all the air valves. The
maximum air volume of the ventilation cabinet s is free from the control of the
wind speed value.
當(dāng)出現(xiàn)異常情況時，開啟緊急排放模式控制,系統(tǒng)將全部打開風(fēng)閥,本臺通風(fēng)柜最大風(fēng)量，不受面風(fēng)速值的控制。
We provide laboratory for variable air volume systems CON-LABC with VAV fume
hood control system CON-FHC,using the world’s most advanced VAV solutions
through a digital controller for laboratory supply and exhaust,fume hood face
velocity for strict monitoring and
control.
我們提供的實驗室變風(fēng)量體統(tǒng)CON-LABC與通風(fēng)柜變風(fēng)量控制系統(tǒng)CON-FHC,采用世界最先進的VAV解決方案，通過數(shù)學(xué)控制器對實驗室送排風(fēng)、通風(fēng)柜的面風(fēng)速，進行嚴(yán)格的監(jiān)視與控制。
Security no matter how to adjust the opening window, you can always precise
control of the fume hood wind speed of 0.5m/s+ 20% of imports. At the same time
the exhaust valve air flow tracking changes in the amount of wind to send the
air valve to increase or decrease exhaust volume to ensure that the design of
the infiltration air flow is constant, thus ensuring a laboratory micro-negative
pressure and airflow direction. System strong adaptability, and energy
consumption can be decline to fully protect the safety on this
premise.
保障無論調(diào)節(jié)窗開度如何，始終可以精確控制通風(fēng)柜進口風(fēng)速為0.5m/s.同時排放閥風(fēng)量追蹤送風(fēng)閥的風(fēng)量的變化。增大或減小排風(fēng)量，以保證設(shè)計的滲透風(fēng)量恒定，從而保證實驗室的微負(fù)壓及正確的氣流方向。系統(tǒng)適應(yīng)性強，可以在充分保障安全的前提下降低能耗。
