發(fā)布時間：2018-05-07 22:16

  本文選題：蒸發(fā)冷卻 + 輻射供冷　； 參考：《西安工程大學(xué)》2013年碩士論文

【摘要】：基于蒸發(fā)冷卻的輻射吊頂與桌面工位空調(diào)復(fù)合系統(tǒng)，利用蒸發(fā)冷卻技術(shù)制取高溫冷水和新風(fēng)，分別送給室內(nèi)的輻射吊頂和桌面工位空調(diào)裝置。室內(nèi)部分顯熱負荷由輻射末端消除，室內(nèi)濕負荷和其余部分顯熱負荷由桌面工位空調(diào)承擔(dān)。該復(fù)合系統(tǒng)是典型的獨立新風(fēng)控制系統(tǒng)，房間呈現(xiàn)大小環(huán)境的分區(qū)分布，大環(huán)境（背景區(qū)）和小環(huán)境（工作區(qū)），可實現(xiàn)分時分區(qū)控制，特別注重對人員附近工作區(qū)域的控制。桌面工位空調(diào)將新鮮空氣直接送到人員呼吸區(qū)，空氣品質(zhì)高，人員對工作區(qū)的空調(diào)個性化控制，提高人員對環(huán)境的滿意率，輻射末端采用蒸發(fā)冷卻技術(shù)提供的高溫冷水，節(jié)能環(huán)保。 結(jié)合蒸發(fā)冷卻空調(diào)系統(tǒng)的實際應(yīng)用情況，對輻射供冷/暖和工位空調(diào)深入學(xué)習(xí)，介紹基于蒸發(fā)冷卻的輻射吊頂與桌面工位空調(diào)復(fù)合系統(tǒng)，并對復(fù)合系統(tǒng)的理論原理、特點、運行模式及其應(yīng)用領(lǐng)域進行分析。復(fù)合系統(tǒng)是獨立新風(fēng)控制系統(tǒng)，屬于溫濕度獨立控制系統(tǒng)的一種，對房間進行分時分區(qū)控制，能夠充分利用蒸發(fā)冷卻制取的高溫冷水和新風(fēng)，為房間提供全新風(fēng)，并且直接將新鮮空氣送到人員工作區(qū)，輻射吊頂與桌面工位空調(diào)相結(jié)合能夠得到更好的室內(nèi)氣流組織。 根據(jù)復(fù)合系統(tǒng)的原理與特點歸納總結(jié)了復(fù)合系統(tǒng)的設(shè)計方法，對房間進行工作區(qū)與背景區(qū)的劃分，室內(nèi)由輻射末端和工位送風(fēng)兩套空調(diào)系統(tǒng)控制室內(nèi)環(huán)境，與其他系統(tǒng)的設(shè)計方法有較多不同，并對設(shè)計流程和設(shè)計步驟做了詳細的介紹，為該復(fù)合系統(tǒng)在實際的工程設(shè)計應(yīng)用提供一定的參考。 采用Airpark軟件建立了桌面工位空調(diào)系統(tǒng)模型，與已有的實驗數(shù)據(jù)進行對比分析，驗證了Airpark軟件模擬桌面工位空調(diào)系統(tǒng)的準確性，模擬結(jié)果與實驗結(jié)果的數(shù)據(jù)相吻合，誤差值在可允許的范圍內(nèi)。Airpark軟件有三種輻射模型，經(jīng)過試算選擇模擬收斂快、精度高的DO模型。 利用Airpark軟件建立了基于蒸發(fā)冷卻的輻射吊頂與桌面工位空調(diào)復(fù)合系統(tǒng)模型，模擬室內(nèi)熱環(huán)境和氣流組織，分析人員工作區(qū)的熱舒適性、室內(nèi)空氣品質(zhì)。模擬結(jié)果顯示： 1復(fù)合系統(tǒng)設(shè)計方法計算的風(fēng)量、風(fēng)速滿足熱舒適性要求，模型房間風(fēng)速分布均勻，人員工作區(qū)風(fēng)速小于0.3m/s，該項設(shè)計方法合理。 2在設(shè)計工況的基礎(chǔ)上，分別提高桌面工位空調(diào)送風(fēng)溫度和輻射頂板的表面溫度之后，室內(nèi)的熱環(huán)境并沒有變的偏熱或不舒適，反而室內(nèi)的溫度分布更為合理，熱舒適性更好，人員的滿意率提高。 3提高桌面工位空調(diào)送風(fēng)溫度到20℃和提高輻射頂板的表面溫度到22℃，，復(fù)合系統(tǒng)中蒸發(fā)冷卻新風(fēng)機組的出風(fēng)溫度和高溫冷水機組的出水溫度的要求降低，可以減少復(fù)合空調(diào)系統(tǒng)的能耗，擴展了蒸發(fā)冷卻的適應(yīng)性區(qū)域，可以使蒸發(fā)冷卻技術(shù)應(yīng)用于更為廣闊的領(lǐng)域。
[Abstract]:Based on evaporative cooling radiation ceiling and desktop air conditioning system, high temperature cold water and fresh air are made by evaporative cooling technology and sent to radiation ceiling and desktop air conditioning device respectively. The indoor sensible heat load is eliminated by the radiation end, and the indoor humidity load and the rest of the sensible heat load are carried by the desktop air conditioning. The compound system is a typical independent fresh air control system. The room presents the partition distribution of the big and small environment, the big environment (background area) and the small environment (working area), which can realize the time-sharing and partition control, especially pay attention to the control of the working area near the personnel. Desktop air conditioning sends fresh air directly to the breathing area of the personnel. The air quality is high, the personnel have individualized control of the air conditioning in the working area, and the personnel are satisfied with the environment. The radiation terminal adopts the high temperature cold water provided by the evaporative cooling technology. Energy saving and environmental protection. Combined with the practical application of evaporative cooling air conditioning system, this paper introduces the radiation ceiling and desktop air conditioning composite system based on evaporative cooling, and introduces the theoretical principle and characteristics of the composite system. Operation mode and its application field are analyzed. The compound system is an independent fresh air control system, which belongs to the temperature and humidity independent control system. It can make full use of the high temperature cold water and fresh air made by evaporative cooling to provide a new air for the room. And direct the fresh air to the personnel working area, radiation ceiling and desktop air conditioning can get better indoor airflow organization. According to the principle and characteristics of the composite system, the design method of the composite system is summarized. The working area and background area of the room are divided, and the indoor environment is controlled by two sets of air conditioning systems, the radiation terminal and the air supply station. There are many differences between the design methods of the system and other systems, and the design flow and design steps are introduced in detail, which provides a certain reference for the application of the composite system in practical engineering design. The model of desktop air conditioning system is established by using Airpark software, and compared with the existing experimental data, the accuracy of the simulation of desktop air conditioning system by Airpark software is verified. The simulation results are consistent with the experimental data. There are three kinds of radiation models in the Airpark software within the allowable range, and the do model with fast convergence and high precision is selected by trial calculation. The composite system model of radiation ceiling and desktop air conditioning based on evaporative cooling was established by using Airpark software to simulate the indoor thermal environment and airflow organization and to analyze the thermal comfort and indoor air quality of the working area. The simulation results show that: 1 the wind volume calculated by the design method of the composite system meets the requirements of thermal comfort, the wind speed distribution in the model room is uniform, the wind speed in the personnel working area is less than 0.3 m / s, the design method is reasonable. 2 on the basis of the design conditions, after raising the air supply temperature and the surface temperature of the radiant roof, the indoor thermal environment is not partial or uncomfortable, on the contrary, the indoor temperature distribution is more reasonable, and the thermal comfort is better. An increase in the satisfaction of the staff. (3) raising the air supply temperature to 20 鈩

本文編號：1858698