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轉(zhuǎn)換比率:金額 X 10=金幣數(shù)量, 例100元=1000金幣 | 論文字?jǐn)?shù):17546 | ![]() | |
折扣與優(yōu)惠:團(tuán)購(gòu)最低可5折優(yōu)惠 - 了解詳情 | 論文格式:Word格式(*.doc) | ![]() |
摘 要:地源熱泵是利用淺層地能進(jìn)行供熱制冷的新型能源利用技術(shù),是熱泵的一種,熱泵是利用卡諾循環(huán)和逆卡諾循環(huán)原理轉(zhuǎn)移冷量和熱量的設(shè)備.地源熱泵通常是指能轉(zhuǎn)移地下土壤中熱量或者冷量到所需要的地方.通常熱泵都是用來(lái)做為空調(diào)制冷或者采暖用的.地源熱泵還利用了地下土壤巨大的蓄熱蓄冷能力,冬季地源把熱量從地下土壤中轉(zhuǎn)移到建筑物內(nèi),夏季再把地下的冷量轉(zhuǎn)移到建筑物內(nèi),一個(gè)年度形成一個(gè)冷熱循環(huán). 本設(shè)計(jì)為南京市某綜合醫(yī)院地源熱泵空調(diào)設(shè)計(jì),共五層,筑總面積3571 m2 ,全樓冷負(fù)荷為770KW。通過比較,我們最終選用地源熱泵系統(tǒng)作為冷熱源。 醫(yī)院的房間功能不同,有辦公室、病房、診室、產(chǎn)房等。將該集中系統(tǒng)設(shè)為風(fēng)機(jī)盤管加獨(dú)立新風(fēng)系統(tǒng),新風(fēng)機(jī)組從室外引入新風(fēng)處理到室內(nèi)空氣焓值,風(fēng)機(jī)盤管承擔(dān)室內(nèi)全部冷負(fù)荷及部分的新風(fēng)濕負(fù)荷。風(fēng)機(jī)盤管加獨(dú)立新風(fēng)系統(tǒng)有百葉風(fēng)口下送和側(cè)送。水系統(tǒng)采用閉式雙管同程式,冷凍水泵四臺(tái),三用一備;冷卻水泵選四臺(tái),三用一備。由于冷熱不平衡,選用一臺(tái)冷卻塔在夏季使用。衛(wèi)生間通風(fēng)統(tǒng)一由排風(fēng)扇接出,在末端安裝止回閥。 在冷負(fù)荷計(jì)算的基礎(chǔ)上完成主機(jī)和風(fēng)機(jī)盤管的選型,并通過風(fēng)量、水量的計(jì)算確定風(fēng)管路和水管路的規(guī)格,并校核最不利環(huán)路的阻力和壓頭用以確定新風(fēng)機(jī)和水泵。依據(jù)相關(guān)的空調(diào)設(shè)計(jì)手冊(cè)所提供的參數(shù),進(jìn)一步完成新風(fēng)機(jī)組、水泵、熱泵機(jī)組等的選型,從而將其反應(yīng)在圖紙上,最終完成整個(gè)空調(diào)系統(tǒng)設(shè)計(jì)。 關(guān)鍵詞:地源熱泵; 風(fēng)機(jī)盤管加獨(dú)立新風(fēng)系統(tǒng);負(fù)荷;選型
Abstract:With the progress of science and technology, people pay more and more attention to the lives of comfortable and health. Air conditioning technology are playing a bigger role in our daily life. This design is about the central air conditioner engineering of a general hospital which locates in Nanjing.It has five floors and its total area is about 3571 m2.The cold duty is 770 KW.By comparison ,we finally choose ground source heat pump as heat and cold source. The function of hospital room is different.There are rooms such as offices, wards, clinic, the maternity ward. The system adopts the PAU+FCU system. FCU system deals with the fresh air. PAU system carries on the whole cold duty and part wet duty. PAU+FCU systems can send air from the side and the upside; it uses the circular air diffuser to supply air. There are four water-cooling pumps, three are used when heating,the other is used in emergencry. There are also four frozen water pumps,the condition are the same as water-cooling pumps. Due to cold heat imbalance, we choose a cooling tower when use in the summer. The system in washroom can ventilate by itself. We select the air conditioning host and FCU by calculating the cold load.We ensure the duct road and conduit road specification through the calculation of air and water.We select the new fan and pump by checking the most unfavorable loop.Further,we ensure the equipment selection according to the air conditioning handbook of parameters.Then we can draw them in the picture.Finally,we complete the entire air conditioning system design. Keywords: ground source heat pump ; PAU+FCU systems; load; selection |