【摘要】：高校宿舍建筑具有體量大,人員密集,寒暑假“空巢”、使用規(guī)律等特點,所以熱計量改造節(jié)能潛力巨大。本文根據新疆嚴寒地區(qū)的供暖時間、室外溫度變化情況及高校宿舍采暖用能特點,把整個采暖期劃分四個氣候階段:初寒期、嚴寒期、值班期、末寒期,并提出三種在集中供熱系統(tǒng)樓棟計量條件下高校宿舍采暖模式:固定模式,流量調節(jié)模式,分時調節(jié)模式。采用DesignBuilder能耗模擬軟件對宿舍建筑以不同調節(jié)方式為變量來分析探討各氣候階段的室內溫度變化及能耗情況,獲得宿舍熱計量采暖最優(yōu)模擬調節(jié)組合方案,同時結合新疆嚴寒地區(qū)所在高校石河子大學熱計量改造工程實例,根據模擬所得采暖最優(yōu)調節(jié)組合方案進行現場試驗,對實時監(jiān)測采暖建筑的熱力入口供回水溫度、流量情況及各典型宿舍的室內溫度等數據進行分析,并通過模擬結果和實測結果對比分析,論證熱計量采暖最優(yōu)調節(jié)組合方案的可行性。模擬研究結果表明:熱計量采暖的宿舍在初寒期采用流量調節(jié)模式(閥門開啟度70%),節(jié)能率可以達到34.2%;嚴寒期采用分時調節(jié)模式,可以在供暖期間滿足室內溫度和舒適度的要求,在停暖期間室內采暖溫度降幅3℃~5℃,節(jié)能率達35.32%;值班期采用流量調節(jié)模式(閥門開啟度20%)時,可以滿足室內無人狀態(tài)最低溫度10℃的要求,采暖節(jié)能率達57.52%;末寒期采用流量調節(jié)模式(閥門開啟度60%)采暖室內溫度較穩(wěn)定,基本滿足室內設計溫度20℃的采暖要求,節(jié)能率達到31.97%;初寒期和末寒期的供水溫度按照50℃運行,室內溫度和舒適度均達到了設計要求。試驗結果表明:各測試房間室內溫度全天的變化趨勢基本相同,在采用流量調節(jié)模式采暖時,宿舍內部溫度穩(wěn)定性較好,且均能保證室內舒適度要求;采用分時調節(jié)模式采暖時,宿舍室內的溫度波動較大,室內溫度日較差最大為4.59℃。模擬與試驗對比結果表明:典型宿舍在實測和模擬條件下流量調節(jié)模式與分時調節(jié)模式室溫的日波動趨勢基本一致,模擬與實測的誤差產生是由于模擬條件下忽略了供暖設備的蓄熱量及建筑的熱惰性等因素,導致模擬條件下室內溫度變化速率較大。在供暖期間能夠滿足宿舍室內溫度和舒適度要求的前提下,嚴寒地區(qū)高校宿舍熱計量采暖節(jié)能調節(jié)模式最優(yōu)調節(jié)組合方案為:初寒期采用流量調節(jié)模式(閥門開啟度70%),嚴寒期采用分時調節(jié)模式,值班期采用流量調節(jié)模式(閥門開啟度20%),末寒期采用流量調節(jié)模式(閥門開啟度60%)采暖。
[Abstract]:The dormitory building in colleges and universities has the characteristics of large volume, dense personnel, "empty nest" in winter and summer vacation, and so on, so the energy saving potential of heat metering reform is huge. According to the heating time, the change of outdoor temperature and the characteristics of heating energy used in college dormitory, this paper divides the whole heating period into four climatic stages: the initial cold period, the duty period, the final cold period, and the final cold period. Three kinds of heating modes of college dormitory under the condition of building metering of central heating system are put forward: fixed mode, flow regulation mode and time-sharing regulation mode. Using DesignBuilder energy consumption simulation software to analyze and discuss the indoor temperature change and energy consumption in different climate stages of dormitory buildings with different adjustment modes, the optimal simulation and adjustment combination scheme of dormitory heat metering heating is obtained. At the same time, combined with the example of heat metering and reconstruction project of Shihezi University, a university located in severe cold area of Xinjiang, according to the optimal heating adjustment combination scheme obtained from simulation, the field test is carried out to monitor the temperature of the heating inlet of the heating building in real time. The data of flow rate and indoor temperature of typical dormitory are analyzed, and the feasibility of optimal adjustment combination scheme of heat metering heating is proved by comparing and analyzing the simulation results and the measured results. The simulation results show that the heat metering heating dormitory adopts flow regulation mode (valve opening degree 70%) in the initial cold period, and the energy saving rate can reach 34.2g; In the cold period, the time-sharing adjustment mode can meet the requirements of indoor temperature and comfort during the heating period. The indoor heating temperature decreases by 3 鈩，

本文編號：2350188