本文選題：冷庫(kù) + 滲風(fēng)　； 參考：《制冷學(xué)報(bào)》2017年03期

【摘要】：伴隨冷庫(kù)總量的快速增長(zhǎng),冷庫(kù)的能耗問題已越來(lái)越受到關(guān)注。庫(kù)門滲風(fēng)作為冷庫(kù)的一項(xiàng)占比很大的熱負(fù)荷是冷庫(kù)能耗研究的一個(gè)重點(diǎn)。本文采用非穩(wěn)態(tài)RANS模型對(duì)庫(kù)門滲風(fēng)建立了動(dòng)態(tài)模擬模型,利用對(duì)一座庫(kù)高和門高之比為2∶1的冷庫(kù),在不同庫(kù)內(nèi)外溫差和冷風(fēng)機(jī)運(yùn)行模式下,驗(yàn)證實(shí)測(cè)數(shù)據(jù)結(jié)果表明:所建模型預(yù)測(cè)的滲風(fēng)量、測(cè)量點(diǎn)當(dāng)?shù)仫L(fēng)速和溫度的數(shù)值和變化趨勢(shì)都與實(shí)驗(yàn)值有較好的吻合,在開門時(shí)間40 s內(nèi)時(shí),滲風(fēng)量模擬誤差在±10%以內(nèi)。利用該模型對(duì)滲風(fēng)的特性和機(jī)理進(jìn)行了模擬分析,結(jié)果表明,受風(fēng)機(jī)水平方向風(fēng)場(chǎng)影響,風(fēng)機(jī)開時(shí)庫(kù)內(nèi)溫度均比風(fēng)機(jī)關(guān)時(shí)低。庫(kù)內(nèi)外空氣密度差較小,庫(kù)內(nèi)冷空氣受重力的影響不大,因此滲風(fēng)量隨開門時(shí)間呈線性變化。
[Abstract]:With the rapid growth of the total amount of cold storage, the energy consumption of cold storage has been paid more and more attention. As a large proportion of cold storage heat load is one of the key points in the energy consumption research of cold storage. In this paper, a dynamic simulation model is established by using the unsteady state RANS model to simulate the seepage wind of the reservoir door. The cold storage with the ratio of 2:1 height to the door height is used under the different operating modes of the temperature difference inside and outside the reservoir and the cold air cooler. The experimental results show that the predicted seepage volume, the local wind speed and temperature of the measured points are in good agreement with the experimental values, and the simulation error of seepage air volume is less than 鹵10% when the opening time is less than 40 seconds. The model is used to simulate and analyze the characteristics and mechanism of the seepage wind. The results show that the temperature in the fan opening is lower than that in the wind mechanism due to the influence of the wind field in the horizontal direction of the fan. The difference of air density inside and outside the reservoir is small, and the cold air in the reservoir is not affected by gravity, so the air permeation rate changes linearly with the opening time.
【作者單位】： 中國(guó)科學(xué)院理化技術(shù)研究所;中國(guó)科學(xué)院大學(xué);清華大學(xué);
【基金】：國(guó)家自然科學(xué)基金(51676199) 國(guó)家重點(diǎn)研發(fā)計(jì)劃(2016YFE0114300)資助項(xiàng)目~~
【分類號(hào)】：TB657.1

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