制冷常用術(shù)語

制冷常用術(shù)語制冷常用術(shù)語溫度溫度被用來表示物質(zhì)冷與熱的程度，溫度的高低的程度可用溫度計(jì)來度量，如玻璃溫度計(jì)，管內(nèi)的液體受熱后膨脹，液面升高，冷卻收縮后，液面降低，液面的高低表示溫度的高低程度。攝氏溫度：在標(biāo)準(zhǔn)大氣壓下，把水的冰點(diǎn)作為0度，沸點(diǎn)作為100度，在0度與100度之間均衡的刻成100格，每格為l度，以符號℃表示。華氏溫度：在標(biāo)準(zhǔn)大氣壓下，把水的冰點(diǎn)定為32度，而沸點(diǎn)定為212度、二者之間均衡的刻成180格，每格為l度，以符號oF表示。開氏溫度(又稱絕對溫度)：它以攝氏溫標(biāo)為基礎(chǔ)、把水的冰點(diǎn)定為273.16度，水的沸點(diǎn)定為373．16度，理論上把物質(zhì)中分子全部停止運(yùn)動(dòng)之點(diǎn)作為0度，以符號K表示。熱量物體溫度的高低表示了物體的物質(zhì)分子熱運(yùn)動(dòng)劇烈的程度，溫度的高低也表示物體所具有能量的高低，這種能量稱為熱能。當(dāng)溫度不同的兩個(gè)物體相接觸時(shí)，兩者溫度逐步趨于一致，發(fā)生了熱能從溫度較高的物體向溫度較低的物體轉(zhuǎn)移，此時(shí)物體所放出或吸收的能量稱為熱量。卡：在標(biāo)準(zhǔn)大氣壓力下，將l克的水加熱或冷卻，其溫度升高或降低l℃時(shí)，所加進(jìn)或除去的熱量稱為l卡，以符號cal表示。因卡的單位太小，工程上往往采用其1000倍的千卡或大卡來表示。具符號為kcal。英熱單位：在標(biāo)準(zhǔn)大氣壓下，將11b(磅)(11b＝0.454kg)水加熱或冷卻，其溫度升高或降低華氏溫度loF，所加進(jìn)或除去的熱量稱為一個(gè)英熱單位，其符號為Btu。焦耳：在國際單位制中，取熱量單位與功的單位一致，以焦耳表示。焦耳相當(dāng)于用1N(牛頓)的力，共作用點(diǎn)在力的方向上移動(dòng)lm(米)所做的功。因此，在國際單位制中，焦耳是功和能的單位，采用這種單位使計(jì)算簡化，焦耳的符號為J。我國法定熱量單位為焦耳。比熱任何物質(zhì)當(dāng)加進(jìn)熱量，它的溫度會升高。但相同質(zhì)量的不同物質(zhì)，升高同樣溫度時(shí)，其所加進(jìn)的熱量是不一樣的。為相互比較，把lkg水溫度升高1℃知道材料比熱值，就能計(jì)算出對它降溫所需要除去的熱量。例如要將5kg70℃的水冷卻到15顯熱對固態(tài)、液態(tài)或氣態(tài)的物質(zhì)加熱，只要它的形態(tài)不變，則熱量加進(jìn)去后，物質(zhì)的溫度就升高，加進(jìn)熱量的多少在溫度上能顯示出來，即不改變物質(zhì)的形態(tài)而引起其溫度變化的熱量稱為顯熱。如對液態(tài)的水加熱，只要它還保持液態(tài)，它的溫度就升高；因此，顯熱只影響溫度的變化面不引起物質(zhì)的形態(tài)的變化。潛熱對液態(tài)的水加熱，水的溫度升高，當(dāng)達(dá)到沸點(diǎn)時(shí)，雖然熱量不斷的加入，但水的溫度不升高，一直停留在沸點(diǎn)，加進(jìn)的熱量僅使水變成水蒸氣，即由液態(tài)變?yōu)闅鈶B(tài)。這種不改變物質(zhì)的溫度而引起物態(tài)變化(又稱相變)的熱量稱為潛熱。壓力氣體由分子組成，億萬分子在無規(guī)則的運(yùn)動(dòng)中，頻繁撞擊容器內(nèi)壁，在內(nèi)壁單位表面積上垂直產(chǎn)生的力稱為壓力。在工程中測量氣體壓力的常用單位是：千克／厘米2、或?yàn)閙mHg(毫米汞柱)，我國的法定單位是Pa(帕斯卡)。大氣壓力：包圍地球的空氣層對單位地球表面積形成的壓力稱為大氣壓力。通常用B表示。單位用帕Pa或千帕kPa表示。絕對壓力：當(dāng)?shù)卮髿鈮菏ぷ鲏毫Α９ぷ鲏毫?表壓)：用儀表測定的壓力。蒸發(fā)與沸騰蒸發(fā)：指在液體自由表面進(jìn)行氣化的過程。沸騰：指液體內(nèi)部產(chǎn)生氣泡形式的劇烈氣化過程。放熱系數(shù)當(dāng)凍結(jié)一種物質(zhì)時(shí)，如在表面吹風(fēng)則它的凍結(jié)速度比不吹風(fēng)時(shí)快。表示這種不同物質(zhì)之間在不同狀態(tài)下?lián)Q熱能力的物理量稱為放熱系數(shù)，其數(shù)值等于每小時(shí)、每平方米面積上，當(dāng)流體和固體壁之間的溫度差為l℃時(shí)所傳遞的熱量。以符號a表示，其單位為kcal／(m2h℃)，國際單位制是W／(m2k)或J／(m2h℃)、兩者之間換算關(guān)系為：1W／(m2K)＝0.860kcal／(m2h℃)傳熱系數(shù)熱量從高溫側(cè)流體透過平壁轉(zhuǎn)移到低溫側(cè)流體。這種熱量傳遞的能力除與兩側(cè)溫差、傳熱面積的大小有關(guān)外，還與平壁的導(dǎo)熱系數(shù)，平壁的厚度及壁面兩側(cè)的放熱系數(shù)有關(guān)。把所有因素列成一個(gè)方程式，即：

Q＝KFDt(kJ／h)

式中：Q：傳遞的熱量(kJ／h)；F：平壁的表面積(m2)；Dt：溫差Dt＝t1-t2(℃)；K：傳熱系數(shù)kJ／(m2h℃)

K為傳熱系數(shù)，它數(shù)值上等于當(dāng)兩側(cè)溫差l℃時(shí)、lh通過lm2傳熱面積，從一側(cè)熱流體傳到另一側(cè)冷流體所傳遞的熱量。單位是kJ／(m2h℃)或W／(m2k)。比容和密度單位容積的濕空氣所具有的質(zhì)量稱為密度。用符號ρ表示。而單位質(zhì)量的濕空氣所占有的容積稱為比容，用符號V表示。

濕度濕度是表示濕空氣中含有水蒸汽量多少的物理量，有三種表示方法。絕對濕度：l濕空氣中含水蒸汽的質(zhì)量。符號為Z，單位為kg／。絕對濕度使用起來不方便。它不能直接反映出濕空氣的干濕程度。含濕量：每公斤干空氣所含有水蒸汽量稱為含濕量，符號為d，單位為kg／kg(干)。相對濕度：濕空氣中水蒸汽分壓力和同溫度下飽和水蒸汽分壓力之比，符號表示。露點(diǎn)溫度在一定大氣壓力下，含濕量不變時(shí)空氣中的水蒸汽凝結(jié)為水(凝露)的溫度。在d不變時(shí)，空氣溫度下降，由未飽和狀態(tài)變?yōu)轱柡蜖顟B(tài)，此時(shí)空氣的相對濕度=1O0％。在空調(diào)技術(shù)中，把空氣降溫至露點(diǎn)溫度，達(dá)到除濕干燥空氣的目的。焓焓是濕空氣的一個(gè)重要參數(shù)。是一個(gè)內(nèi)能與壓力位能之和的復(fù)合狀態(tài)參數(shù)。

在空調(diào)過程中，濕空氣的狀態(tài)經(jīng)常發(fā)生變化，焓可以很方便確定該狀態(tài)變化過程中的熱交換量。濕空氣的變化過程是定壓過程，焓差等于熱交換量。靜壓、動(dòng)壓、全壓靜壓(Pi)：由于空氣分子不規(guī)則運(yùn)動(dòng)而撞擊于管壁上產(chǎn)生的壓力稱為靜壓。計(jì)算時(shí)，以絕對真空為計(jì)算零點(diǎn)的靜壓稱為絕對靜壓。以大氣壓力為零點(diǎn)的靜壓稱為相對靜壓?？照{(diào)中的空氣靜壓均指相對靜壓。靜壓高于大氣壓時(shí)為正值，低于大氣壓時(shí)為負(fù)值。動(dòng)壓(Pb)：指空氣流動(dòng)時(shí)產(chǎn)生的壓力，只要風(fēng)管內(nèi)空氣流動(dòng)就具有一定的動(dòng)壓，其值永遠(yuǎn)是正的。全壓(Pq)全壓是靜壓和動(dòng)壓的代數(shù)和：Pq＝Pi十Pb全壓代表lm3氣體所具有的總能量。若以大氣壓為計(jì)算的起點(diǎn)，它可以是正值，亦可以是負(fù)值。表面冷卻器的熱工計(jì)算類型計(jì)算類型已知條件計(jì)算內(nèi)容設(shè)計(jì)性計(jì)算空氣量G空氣初狀態(tài)(干球溫度、溫球溫度……)空氣終狀態(tài)(干球溫度、溫球溫度……)表冷器規(guī)格、臺數(shù)、冷水初溫、終溫、水量。校核性計(jì)算空氣量G空氣初狀態(tài)(干球溫度、溫球溫度……)表冷器規(guī)格、臺數(shù)、冷水初溫、水量。空氣終狀態(tài)(干球溫度、溫球溫度……)，水終溫。表面冷卻器的選型計(jì)算實(shí)例【實(shí)例1】已知空調(diào)使用地點(diǎn)在江蘇蘇州，大氣壓力=1.01Kpa，夏季平均空氣參數(shù)：=34℃、=90.2kj/kg、=28.2℃=64.5%。室內(nèi)空氣參數(shù)：=22℃、=43.1kj/kg、=15.5℃=50%。新風(fēng)比：10%?？照{(diào)面積230，單位負(fù)荷466.4W/。求：冷量、風(fēng)量、表冷器規(guī)格、進(jìn)出水溫度和水量、水阻力、風(fēng)阻力、除濕量?！窘狻俊窘狻?)查濕空氣的焓濕圖，求回風(fēng)參數(shù)。A點(diǎn)為室外工況，B點(diǎn)為室內(nèi)工況。再根據(jù)新風(fēng)比確定C點(diǎn)，查出C點(diǎn)工況：=23.2℃、=47.8kj/kg、=17.1℃=54%。2)需要的總冷量Q=230×466.4W/=107.3KW實(shí)例1圖 3)風(fēng)量假設(shè)空調(diào)機(jī)組出風(fēng)空氣參數(shù)：=10.5℃、=29.5kj/kg、=10.1℃=95%根據(jù)公式：Q=G(-)G=107.3/(47.8-29.5)=5.9Kg/s=177004)確定表冷器規(guī)格計(jì)算需要的接觸系數(shù)，確定表冷器排數(shù)。 查附錄1表，當(dāng)通過表冷器的截面風(fēng)速為2.5m/s、通過銅管的水速為0.8m/s時(shí)，濕工況下的6排管表冷器的實(shí)際接觸系數(shù)為0.934。理論上計(jì)算，6排管已經(jīng)可以滿足性能要求。5)求析濕系數(shù)6)求傳熱系數(shù)水流速設(shè)為：0.8m/s(查表時(shí)的水速)7)求冷水量表冷器的傳熱面積：40×1.3×6×0.84=262.08表冷器的通水截面積(銅管內(nèi))：181.4584×40×=0.0073查附錄4可得進(jìn)水管徑為DN65。8)求表冷器能達(dá)到的求傳熱單元數(shù) 求水當(dāng)量比求9)求水溫冷水初溫：冷水終溫：10)求空氣阻力和水阻力空氣阻力：水阻力：11)除濕量室外空氣參數(shù)：=34℃、=28.2℃時(shí)，濕空氣的含濕量為21.78g/kg(干空氣)室內(nèi)空氣參數(shù)：=22℃、=15.5℃時(shí)，濕空氣的含濕量為8.22g/kg(干空氣)出口空氣參數(shù):=10.5℃、=10.1℃時(shí),濕空氣的含濕量為7.49g除濕量=17700×10%×1.2×(21.78-7.49)+17700×90%×1.2×(8.22-7.49)=44.3Kg/h12)用軟件校核通過“SurfaceAirCooler”-表冷器校核軟件校核，結(jié)論為：上述工況下，進(jìn)水溫度為7℃，水速為1.6m/s，單排進(jìn)水，8排管最大冷量為105.1KW，接近于要求的107KW。因?yàn)樵撥浖强紤]到大約1.2的安全系數(shù)，且附錄1僅是起參考作用，故以軟件校核參數(shù)為準(zhǔn)。輸入 輸出參數(shù)如下：冷凝水管的設(shè)計(jì)管徑選擇承擔(dān)冷量(KW)公稱直徑DN(mm)承擔(dān)冷量(KW)公稱直徑DN(mm)≤720177～598507.1～17.625599～10558017.7～100321056～1512100101～176401513～12462125>12462kWDN150備注：本資料引自美國“McQUAY”水源熱泵空調(diào)設(shè)計(jì)手冊。水封的設(shè)計(jì)注：H=機(jī)內(nèi)負(fù)壓+20注：H=機(jī)內(nèi)負(fù)壓+20(mm)機(jī)內(nèi)負(fù)壓指風(fēng)機(jī)段負(fù)壓。注意事項(xiàng)沿水流方向，水平管道應(yīng)保持不小于千分之一的坡度；且不允許有積水部位。當(dāng)冷凝水盤位于機(jī)組負(fù)壓區(qū)段時(shí)，凝水盤的出水口處必須設(shè)置水封。為了防止冷凝水管道表面產(chǎn)生結(jié)露，必須進(jìn)行防結(jié)露驗(yàn)算。聚氯乙烯塑料管一般不需要進(jìn)行防結(jié)露的保溫和隔汽處理；鍍鋅鋼管時(shí)，一般設(shè)置保溫層。冷凝水立管的頂部，應(yīng)設(shè)計(jì)通向大氣的透氣管。設(shè)計(jì)和布置冷凝水管路時(shí)，必須認(rèn)真考慮定期沖洗的可能性，并應(yīng)設(shè)計(jì)安排必要的設(shè)施。冷凝水管的公稱直徑DN（mm），應(yīng)根據(jù)通過冷凝水的流量計(jì)算確定。一般情況下，每1kW冷負(fù)荷每1h約產(chǎn)生0.4kg左右冷凝水；在潛熱負(fù)荷較高的場合，每1kW冷負(fù)荷每1h約產(chǎn)生0.8kg冷凝水。附錄1JTL-2表冷器接觸系數(shù)Eo(濕工況） NW\Vy1.5001.7502.0002.2502.5002.7503.0003.2503.50040.6000.8540.8420.8320.8230.8150.8080.8010.7950.7900.8000.8760.8640.8530.8440.8380.8290.8270.8160.8111.0000.8940.8810.8710.8610.8530.8460.8390.8330.8271.2000.9090.8960.8850.8760.8670.8600.8530.8460.8411.4000.9220.9090.8970.8880.8790.8720.8650.8580.8521.6000.9330.9200.9080.8980.8900.8820.8750.8690.8631.8000.9430.9290.9180.9080.8990.8910.8840.8780.8722.0000.9520.9380.9270.9170.9080.9000.8930.8860.8802.2000.9600.9460.9350.9250.9160.9080.9000.8940.8882.4000.9670.9540.9420.9320.9230.9150.9080.9010.895NW\Vy1.5001.7502.0002.2502.5002.7503.0003.2503.50060.6000.9440.9370.9310.9250.9200.9160.9110.9070.9040.8000.9560.9500.9440.9380.9340.9290.9250.9210.9181.0000.9650.9590.9530.9480.9440.9390.9350.9320.9281.2000.9720.9660.9610.9560.9520.9470.9430.9400.9361.4000.9780.9720.9670.9620.9580.9540.9500.9470.9431.6000.9830.9770.9720.9680.9630.9590.9560.9520.9491.8000.9860.9810.9770.9720.9680.9640.9610.9570.9542.0000.9890.9850.9800.9760.9720.9680.9650.9620.9592.2000.9920.9880.9830.9790.9760.9720.9690.9650.9622.4000.9940.9900.9860.9820.9790.9750.9720.9690.966NW\Vy1.5001.7502.0002.2502.5002.7503.0003.2503.50080.6000.9790.9750.9720.9690.9660.9630.9600.9580.9560.8000.9850.9810.9780.9760.9730.9710.9680.9660.9641.0000.9890.9860.9830.9810.9780.9760.9740.9720.9701.2000.9920.9890.9870.9850.9820.9800.9780.9760.9751.4000.9940.9920.9890.9870.9850.9830.9820.9800.9781.6000.9950.9940.9920.9900.9880.9860.9840.9830.9811.8000.9970.9950.9930.9920.9900.9880.9870.9850.9842.0000.9980.9960.9950.9930.9920.9900.9890.9870.9862.2000.9980.9970.9960.9940.9930.9910.9900.9890.9872.4000.9990.9980.9970.9950.9940.9930.9910.9900.989 附錄2JTL-2表冷器接觸系數(shù)Eo(干工況）NW\Vy1.5001.7502.0002.2502.5002.7503.0003.2503.50040.6000.5270.5030.4830.4660.4520.4390.4270.4170.4080.8000.5480.5230.5020.4850.4690.4560.4440.4340.4241.0000.5640.5390.5170.4990.4840.4700.4580.4470.4371.2000.5790.5520.5300.5120.4960.4820.4690.4580.4481.4000.5910.5640.5420.5230.5060.4920.4790.4680.4571.6000.6010.5740.5510.5320.5150.5010.4880.4760.4661.8000.6110.5830.5600.5410.5240.5090.4960.4840.4732.0000.6200.5920.5680.5480.5310.5160.5030.4910.4802.2000.6280.5990.5760.5560.5380.5230.5090.4970.4862.4000.6350.6060.5820.5620.5440.5290.5150.5030.492NW\Vy1.5001.7502.0002.2502.5002.7503.0003.2503.50040.6000.6750.6500.6280.6100.5940.5800.5670.5550.5440.8000.6960.6700.6490.6300.6140.5990.5860.5740.5631.0000.7130.6870.6650.6460.6290.6140.6010.5890.5781.2000.7260.7000.6780.6590.6240.6270.6130.6010.5901.4000.7380.7120.6900.6700.6530.6380.6240.6120.6001.6000.7480.7220.7000.6800.6630.6470.6330.6210.6091.8000.7570.7310.7080.6890.6710.6560.6420.6290.6182.0000.7660.7390.7160.6970.6790.6630.6490.6370.6252.2000.7730.7460.7240.7040.6860.6700.6560.6430.6322.4000.7800.7530.7300.7100.6930.6770.6630.6500.638NW\Vy1.5001.7502.0002.2502.5002.7503.0003.2503.50040.6000.7760.7530.7330.7150.6990.6850.6720.6600.6490.8000.7950.7720.7520.7340.7180.7040.6910.6790.6681.0000.8100.7870.7670.7490.7340.7190.7060.6940.6831.2000.8220.7990.7790.7620.7460.7310.7180.7060.6951.4000.8320.8100.7900.7720.7560.7420.7290.7170.7061.6000.8410.8190.7990.7810.7650.7510.7380.7260.7141.8000.8490.8260.8070.7890.7730.7590.7460.7340.7222.0000.8550.8330.8140.7960.7800.7660.7530.7410.7292.2000.8620.8390.8200.8020.7870.7720.7590.7470.7362.4000.8670.8450.8260.8080.7920.7780.7650.7530.742附錄3JTL-2型加熱器干球溫度效率Eg NW\Vy1.5001.7502.0002.2502.5002.7503.0003.2503.50010.6000.3230.3000.2810.2650.2510.2380.2280.2180.2090.8000.3340.3110.2920.2760.2020.2500.2390.2290.2211.0000.3420.3190.3000.2840.2700.2580.2470.2370.2281.2000.3470.3240.3050.2890.2750.2630.2520.2430.2341.4000.3510.3280.3090.2930.2800.2670.2570.2470.2381.6000.3540.3320.3130.2970.2830.2710.2600.2510.2421.8000.3570.3340.3150.3000.2860.2740.2630.2530.2452.0000.3590.3360.3180.3020.2880.2760.2650.2560.2472.2000.3600.3380.3200.3040.2900.2780.2670.2580.2492.4000.3620.3400.3210.3050.2920.2800.2690.2590.251Z0.3940.3690.3480.3300.3150.3010.2890.2790.269NW\Vy1.5001.7502.0002.2502.5002.7503.0003.2503.50020.6000.5370.5050.4780.4540.4330.4140.3980.3830.3690.8000.5530.5220.4950.4720.4510.4330.4160.4010.3881.0000.5640.5330.5060.4830.4630.4450.4290.4140.4011.2000.5710.5410.5150.4920.4720.4540.4380.4230.4101.4000.5770.5470.5210.4980.4780.4610.4450.4300.4171.6000.5810.5510.5260.5030.4840.4660.4500.4360.4221.8000.5840.5550.5290.5070.4880.4700.4540.4400.4272.0000.5870.5580.5330.5110.4910.4740.4580.4440.4312.2000.5900.5600.5350.5130.4940.4770.4610.4470.4342.4000.5920.5630.5380.5160.4970.4790.4640.4500.437Z0.6410.6080.5800.5560.5340.5150.4980.4820.468NW\Vy1.5001.7502.0002.2502.5002.7503.0003.2503.50030.6000.6820.6480.6180.5920.5680.5460.5270.5090.4930.8000.6990.6660.6380.6120.5890.5690.5500.5320.5161.0000.7100.6780.6510.6260.6030.5830.5650.5480.5321.2000.7170.6870.6600.6350.6130.5940.5750.5590.5431.4000.7230.6930.6660.6420.6210.6010.5830.5670.5521.6000.7270.6980.6710.6480.6270.6070.5900.5740.5581.8000.7310.7020.6760.6520.6310.6120.5950.5790.5642.0000.7340.7050.6790.6560.6350.6160.5990.5830.5682.2000.7360.7070.6820.6590.6390.6200.6030.5870.5722.4000.7380.7100.6840.6620.6410.6230.6060.5900.575Z0.7980.7650.7360.7110.6880.6670.6480.6300.614NW\Vy1.5001.7502.0002.2502.5002.7503.0003.2503.50040.6000.7800.7480.7190.6930.6690.6470.6260.6070.5900.8000.7960.7660.7390.7140.6910.6700.6510.6330.6161.0000.8060.7780.7520.7280.7060.6860.6670.6490.6331.2000.8130.7860.7610.7370.7160.6960.6780.6610.6451.4000.8180.7920.7670.7440.7240.7050.6870.6700.6541.6000.8220.7960.7720.7500.7300.7110.6930.6770.6621.8000.8250.8000.7760.7540.7340.7160.6980.6820.6672.0000.8280.8030.7790.7580.7380.7200.7030.6870.6722.2000.8300.8050.7820.7610.7410.7230.7060.6910.6762.4000.8320.8070.7840.7630.7440.7260.7100.6940.679Z0.8960.8670.8410.8170.7950.7750.7560.7390.723附錄4管徑/流速/流量對照表管徑(DN)流量m3/h0.6m/s0.8m/s1.0m1.2m/s1.4m/s1.6m/s1.8m/s2.0m/s200.70.91.11.41.61.82.02.3251.11.41.82.12.52.83.23.5321.72.32.93.54.14.65.25.8402.73.64.55.46.37.28.19.0504.25.77.18.59.911.312.714.1657.29.611.914.316.719.121.523.98010.914.518.121.725.329.032.636.210017.022.628.333.939.645.250.956.512526.535.344.253.061.970.779.588.415038.250.963.676.389.1101.8114.5127.220067.990.5113.1135.7158.3181.0203.6226.2250106.0141.4176.7212.1247.4282.7318.1353.4300152.7203.6254.5305.4356.3407.1458.0508.9350207.8277.1346.4415.6484.9554.2623.4692.7400271.4361.9452.4542.9633.3723.8814.3904.8450343.5458.0572.6687.1801.6916.11030.61145.1500424.1565.5706.9848.2989.61131.01272.31413.7600610.7814.31017.91221.41425.01628.61832.22035.7流速推薦值管徑(DN)3240506580100125150閉式系統(tǒng)0.7-0.90.8-10.9-1.21.1-1.41.2-1.61.3-1.81.5-2.01.6-2.2開式系統(tǒng)0.6-0.80.7-0.90.8-1.00.9-1.21.1-1.41.2-1.61.4-1.81.5-2.0附錄5組合式空氣處理機(jī)噪聲限值風(fēng)量m3/h設(shè)定余壓Pa通風(fēng)機(jī)組冷、熱風(fēng)二管制機(jī)組冷、熱風(fēng)四管制機(jī)組凈化機(jī)組噴水室機(jī)組6300～10000400747879838112500～20000600798384878525000～5000080085898991906300～10000010009093929292125000～16000012009295959595附錄6空調(diào)房間允許最大溫差送風(fēng)方式房間高度m23456側(cè)送、大風(fēng)量6.58.3101214側(cè)送、小風(fēng)量911131517頂棚散流器9.516171818附錄7我國主要城市的室外空氣氣象參數(shù)城市名海拔（M）大氣壓力冬季室外計(jì)算干球溫度（℃）冬季室外計(jì)算相對濕度（%）夏季室外計(jì)算干球溫度（℃）夏季室外計(jì)算濕球溫度（℃）夏季日平均干球溫度（℃）夏季日平均溫差（℃）室外平均風(fēng)速冬夏冬夏北京31.2102.0499.86-124533.226.428.68.82.81.9天津3.3102.66100.48-115333.426.929.28.13.12.6石家莊80.5101.6999.56-115235.126.629.710.41.81.5太原777.993.2991.92-155131.223.426.19.82.62.1呼和浩特1063.090.0988.94-225629.920.825.09.41.61.5沈陽41.6102.0