本文關(guān)鍵詞：小型水源熱泵系統(tǒng)運行特性研究　出處：《天津商業(yè)大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 水源熱泵 對比 實驗研究 模擬研究

【摘要】：本文針對住宅建筑中利用水源熱泵及空氣源熱泵系統(tǒng)的能耗及運行性能開展實驗及模擬研究，分析并對比研究兩種空調(diào)系統(tǒng)的運行特性及其能耗。通過本文中對小型水源熱泵系統(tǒng)的實驗研究及模擬研究，為今后其在小型建筑中的應(yīng)用提供一些參考。同時，通過對小型水源熱泵及空氣源熱泵系統(tǒng)運行的特性對比研究，也為兩種系統(tǒng)在不同建筑的適用性方面提供一些參考。 建立了小型水源熱泵系統(tǒng)實驗臺，在不同水源供水溫度、水流量、室內(nèi)干球溫度條件下，對系統(tǒng)的蒸發(fā)壓力、冷凝壓力、耗功率等性能參數(shù)進行了測試及采集，分析研究各參數(shù)對系統(tǒng)的制熱量及制熱系數(shù)的影響規(guī)律。同時在該系統(tǒng)試驗臺進行相應(yīng)改造對空氣源熱泵系統(tǒng)的供熱工況進行了實驗測試，研究在不同室內(nèi)及室外干球溫度條件下，系統(tǒng)的蒸發(fā)壓力、冷凝壓力、耗功率等性能參數(shù)變化規(guī)律，及其系統(tǒng)的制熱量及制熱系數(shù)的影響因素進行了分析研究。研究結(jié)果表明：水源（空氣源）溫度或流量升高時，系統(tǒng)蒸發(fā)壓力，制熱量及制熱系數(shù)均升高；水源流量升高時，系統(tǒng)耗功率也隨之升高；室內(nèi)干球溫度升高時，系統(tǒng)耗功率升高，制熱系數(shù)下降。對于水源熱泵，水溫每升高1℃，制熱量增加7.4％，制熱系數(shù)增加7.28％；水流量每升高1kg/s,制熱量增加3.9％，制熱系數(shù)增加4.45％。所以水源溫度比流量對系統(tǒng)性能的影響更大。而室內(nèi)干球溫度每升高1°，制熱系數(shù)降低2.96％。對于空氣源熱泵，室外干球溫度每升高1℃，制熱量增加1.74％，制熱系數(shù)增加2.2％；室內(nèi)干球溫度每升高1℃，制熱量降低1.6％，制熱系數(shù)降低1.27％。所以室外干球溫度比室內(nèi)干球溫度對系統(tǒng)性能的影響更大。 在實驗研究的基礎(chǔ)上，，對小型水源熱泵系統(tǒng)及空氣源熱泵系統(tǒng)的各性能參數(shù)進行對比研究。研究結(jié)果表明：在同樣的熱源溫度下，水源熱泵比空氣源熱泵的制熱量和制熱系數(shù)更高。同時，擬合出了空氣源熱泵及水源熱泵系統(tǒng)能效系數(shù)隨各影響因素變化的曲線及關(guān)系式，以作為模擬研究的理論依據(jù)。 對住宅建筑采用水源熱泵和空氣源熱泵系統(tǒng)分別進行了建筑負荷和系統(tǒng)能耗的模擬研究，研究采用equest軟件進行建模及計算，選取了南京地區(qū)三層四戶別墅住宅建筑為模擬對象，以南京市氣象參數(shù)為依據(jù)，并利用實驗擬合出的水冷、風冷熱泵性能參數(shù)變化關(guān)系式，計算建筑全年負荷及系統(tǒng)能耗逐時變化規(guī)律，分析空氣源熱泵及小型水源熱泵系統(tǒng)的負荷率、耗功率、制冷量、制熱量、制冷及制熱系數(shù)等，并對比兩種熱泵系統(tǒng)供熱能耗和制冷能耗情況，比較兩種系統(tǒng)的運行情況及水源熱泵系統(tǒng)節(jié)能的潛力。模擬結(jié)果表明：住宅建筑應(yīng)用水源熱泵的全年運行能耗比空氣源熱泵低30-40％左右，運行成本更低。
[Abstract]:In this paper, the energy consumption and operating performance of water source heat pump and air source heat pump system in residential buildings are studied experimentally and simulated. The operating characteristics and energy consumption of the two air conditioning systems are analyzed and compared. The experimental and simulation research on the small water source heat pump system is carried out in this paper. At the same time, through the small water source heat pump and air source heat pump system operation characteristics comparative study. It also provides some reference for the applicability of the two systems in different buildings. A small water source heat pump system test bench was set up. Under the conditions of different water supply temperature, water flow rate and indoor dry ball temperature, the evaporation pressure and condensation pressure of the system were established. Performance parameters such as power consumption were measured and collected. The influence of various parameters on the heating capacity and heating coefficient of the system is analyzed and studied. At the same time, the heat supply condition of the air-source heat pump system is tested by the corresponding modification of the system test rig. Under different indoor and outdoor dry ball temperature conditions, the performance parameters of the system such as evaporation pressure, condensation pressure and power consumption were studied. The results show that when the temperature or flow rate of water source (air source) increases, the evaporation pressure, heating capacity and heating coefficient of the system increase. When the water flow increases, the power consumption of the system also increases. When the indoor dry ball temperature increases, the power consumption of the system increases and the heating coefficient decreases. For the water source heat pump, the heating capacity increases by 7.4and the heating coefficient increases by 7.28for the water source heat pump when the water temperature rises by 1 鈩

本文編號：1372859