本文選題：地源熱泵 + 供暖��； 參考：《河北工程大學(xué)》2017年碩士論文

【摘要】：隨著我國(guó)城鎮(zhèn)化的不斷推進(jìn),北方供暖地區(qū)的集中供暖面積缺口逐漸擴(kuò)大,同時(shí),大量孤立建筑物及廣大農(nóng)村地區(qū)也亟需環(huán)保高效的供熱方式來(lái)替代常規(guī)燃煤或直接電加熱的供暖方式,地源熱泵作為我國(guó)為數(shù)不多可供選擇的良好供熱方式之一,在全年累積熱負(fù)荷遠(yuǎn)大于全年累積冷負(fù)荷的地區(qū)運(yùn)用時(shí),存在著巖土體熱失衡的問(wèn)題。跨季節(jié)蓄熱太陽(yáng)能-地源復(fù)合熱泵系統(tǒng)的合理應(yīng)用可以很好的解決地源熱泵累年運(yùn)行導(dǎo)致的巖土體熱失衡問(wèn)題,但是目前對(duì)于該系統(tǒng)的研究還不全面,不能良好的支撐系統(tǒng)的推廣與應(yīng)用。本文以現(xiàn)有跨季節(jié)蓄熱太陽(yáng)能-地源復(fù)合熱泵系統(tǒng)研究為起點(diǎn),找出其中仍需進(jìn)一步研究的部分作為本文的研究重點(diǎn)。隨后以北京大興西蘆某公共建筑示范項(xiàng)目系統(tǒng)為原型,進(jìn)行正交模擬實(shí)驗(yàn)研究,得出了太陽(yáng)能集熱器裝機(jī)容量、巖土體的初始溫度、巖土體綜合導(dǎo)熱系數(shù)、巖土體容積比熱容和地埋管換熱器間距五個(gè)參數(shù)對(duì)于巖土體蓄熱達(dá)到平衡時(shí)溫度場(chǎng)平均溫度的影響。研究表明,太陽(yáng)能集熱器裝機(jī)量和巖土體初始溫度對(duì)于最終巖土體溫度場(chǎng)的影響具有高顯著性且影響趨勢(shì)較為相似,均存在一個(gè)拐點(diǎn),拐點(diǎn)處后因素對(duì)于巖土體溫度場(chǎng)的影響顯著程度逐漸降低;巖土體綜合導(dǎo)熱系數(shù)與巖土體容積比熱容對(duì)于巖土體最終溫度場(chǎng)的影響具有高顯著性,且兩者在常見(jiàn)的范圍內(nèi)存在互補(bǔ)性;地埋管換熱器間距對(duì)巖土體最終蓄熱溫度無(wú)顯著影響。為了驗(yàn)證系統(tǒng)的優(yōu)越性并佐證模擬的可靠性,本文對(duì)北京大興西蘆某公共建筑示范項(xiàng)目和無(wú)煤示范村跨季節(jié)蓄熱太陽(yáng)能-地源復(fù)合熱泵系統(tǒng)進(jìn)行了實(shí)驗(yàn)研究,實(shí)驗(yàn)研究結(jié)果與對(duì)應(yīng)的模擬部分保持了一定的相符度,同時(shí),也驗(yàn)證了系統(tǒng)蓄熱部分耗電量較少;蓄熱對(duì)系統(tǒng)夏季供冷影響可控;系統(tǒng)供暖的高效性、舒適性;系統(tǒng)相較常規(guī)地源熱泵具有經(jīng)濟(jì)性。最后,為解決跨季節(jié)蓄熱太陽(yáng)能-地源復(fù)合熱泵系統(tǒng)推廣應(yīng)用時(shí)的適宜性問(wèn)題,本章根據(jù)系統(tǒng)的特點(diǎn),架構(gòu)出一套實(shí)用的體系從房屋冷熱負(fù)荷特征評(píng)價(jià)項(xiàng)、太陽(yáng)能集熱器空間保證率評(píng)價(jià)項(xiàng)、節(jié)能性評(píng)價(jià)項(xiàng)、經(jīng)濟(jì)性評(píng)價(jià)項(xiàng)、年輻射總量評(píng)價(jià)項(xiàng)和熱工分區(qū)評(píng)價(jià)項(xiàng)6個(gè)必要評(píng)價(jià)項(xiàng)來(lái)對(duì)跨季節(jié)蓄熱太陽(yáng)能-地源復(fù)合熱泵系統(tǒng)運(yùn)用的適宜性進(jìn)行判定,得出適宜使用該系統(tǒng)的具體判定指標(biāo),從而為系統(tǒng)的推廣提供便利。
[Abstract]:With the continuous development of urbanization in our country, the gap of central heating area in northern heating areas is gradually widening, and at the same time,A large number of isolated buildings and rural areas also need environmental protection and efficient heating to replace conventional coal-fired or direct electric heating. Ground source heat pump is one of the few good heating methods available in China.When the annual accumulated heat load is much larger than the whole year's accumulated cooling load, there is a problem of thermal imbalance in geotechnical body.The rational application of cross-season solar and ground-source heat pump system can solve the problem of geotechnical heat imbalance caused by the annual operation of ground-source heat pump, but the research on the system is not comprehensive.Not good support system promotion and application.In this paper, the existing cross-seasonal solar and ground source heat pump system is taken as the starting point, and some of the parts that need further research are selected as the focus of this paper.Then taking the demonstration project system of a public building in Daxing Xilu, Beijing as the prototype, the orthogonal simulation experiment was carried out, and the installed capacity of solar collector, the initial temperature of rock and soil, and the comprehensive thermal conductivity of rock and soil were obtained.The influence of five parameters of volumetric specific heat capacity of rock and soil and distance between ground heat exchangers on the average temperature of temperature field when the heat storage of rock and soil reaches equilibrium.The results show that the influence of solar collector installed quantity and initial temperature of rock and soil on the final temperature field of rock and soil is highly significant and the influence trend is similar and there is an inflection point.The influence of the factors at the inflection point on the temperature field of rock and soil gradually decreases, and the influence of the comprehensive thermal conductivity of rock and soil and the specific heat capacity of rock and soil on the final temperature field of rock and soil is highly significant.The distance between ground heat exchangers has no significant effect on the final heat storage temperature of rock and soil.In order to verify the superiority of the system and to prove the reliability of the simulation, a demonstration project of a public building in Xilu, Daxing, Beijing, and a cross-season solar and ground-source heat pump system for cross-season heat storage in a coal-free demonstration village were studied experimentally.The experimental results are consistent with the corresponding simulation part, and also verify that the heat storage part of the system consumes less electricity, the influence of heat storage on the system cooling in summer is controllable, the efficiency and comfort of the system heating is high.The system is more economical than conventional ground source heat pump.Finally, in order to solve the problem of suitability in the popularization and application of cross-season regenerative solar-ground source heat pump system, according to the characteristics of the system, this chapter constructs a set of practical system to evaluate the characteristics of house cooling and heat load.Solar collector space guarantee rate evaluation item, energy conservation evaluation item, economic evaluation item,In order to judge the suitability of cross-season solar energy / ground source heat pump system, six necessary evaluation items of annual total radiation quantity and thermal zone evaluation item are obtained, and the specific judgment indexes are obtained for the suitable use of the system.Thus, it is convenient for the popularization of the system.
【學(xué)位授予單位】：河北工程大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TU83

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