基于空氣焓值的變風(fēng)量空調(diào)冷量計(jì)量
《中國(guó)測(cè)試》雜志社邢麗娟， 楊世忠
邢麗娟， 楊世忠
（青島理工大學(xué)自動(dòng)化工程學(xué)院，山東 青島 266520）
摘 要：根據(jù)變風(fēng)量空調(diào)系統(tǒng)的運(yùn)行特點(diǎn)，以空氣焓值為依據(jù)，通過(guò)新風(fēng)、送風(fēng)和回風(fēng)的焓值來(lái)計(jì)算用戶的冷量消耗進(jìn)而解決變風(fēng)量中央空調(diào)的準(zhǔn)確分戶計(jì)量。該文在準(zhǔn)確性和公平性的前提下，為滿足實(shí)際工程經(jīng)濟(jì)性的要求，給出焓值測(cè)量的不同方案。計(jì)量理論明確，可操作性強(qiáng)，為變風(fēng)量空調(diào)系統(tǒng)分戶計(jì)量提供一種合理的方法。
關(guān)鍵詞：變風(fēng)量空調(diào)系統(tǒng)；冷量計(jì)量；焓值；測(cè)量方案
中圖分類號(hào)：TM925.12；TB94；TP273；TB61+1 文獻(xiàn)標(biāo)志碼：A 文章編號(hào)：1674-5124（2013）04-0018-04
Cool capacity metering based on air vnthalpy in VAV air conditioning system
XING Li-juan， YANG Shi-Zhong
（College of Automation Engineering，Qingdao Technological University，Qingdao 266520，China）
Abstract: Since there are some defects in the present metering theory， good solution of accurate household metering of the variable air volume （VAV） in central air conditioning has not been found yet. According to the characteristics of the VAV air conditioning system and taking air enthalpy value as the basis， the cool capacity metering has been calculated with the enthalpy of the fresh air， return air and the supply air. On the basis of accuracy and fairness， different measurement solutions were designed to meet the requirements of the economy in engineering practice. The proposed measurement method provides a reasonable method and can be easily applied to the VAV air conditioning system with high operability and sound theoretical support.
Key words: variable air volume air conditioning system； cool capacity metering； enthalpy； measurement solution
