【摘要】：燃?xì)鈾C(jī)熱泵熱水器系統(tǒng)是以天然氣為一次能源輸入，為建筑物制冷季節(jié)提供冷量、供暖季節(jié)提供熱量和常年提供生活熱水的新型裝置，本文對(duì)燃?xì)鈾C(jī)熱泵熱水器系統(tǒng)進(jìn)行了理論模擬和實(shí)驗(yàn)研究。 以燃?xì)鈾C(jī)熱泵熱水器系統(tǒng)為基礎(chǔ)，建立了燃?xì)獍l(fā)動(dòng)機(jī)和熱泵系統(tǒng)的數(shù)學(xué)模型，以實(shí)驗(yàn)和仿真相結(jié)合的方法研究燃?xì)鈾C(jī)熱泵熱水器在冬季供暖季節(jié)的運(yùn)行性能，結(jié)果表明所建立的模型能夠有效預(yù)測(cè)燃?xì)鈾C(jī)熱泵熱水器的運(yùn)行特性。 對(duì)燃?xì)鈾C(jī)熱泵熱水器以循環(huán)加熱模式和一次加熱模式工作時(shí)的運(yùn)行特性進(jìn)行了對(duì)比研究，研究過(guò)程中主要考慮了環(huán)境溫度、冷凝器冷卻水流量、制冷劑過(guò)熱度及發(fā)動(dòng)機(jī)轉(zhuǎn)速對(duì)系統(tǒng)性能的影響，結(jié)果表明系統(tǒng)以一次加熱模式運(yùn)行時(shí)具有更高的一次能源利用率。 燃?xì)鈾C(jī)熱泵熱水器在供冷季節(jié)以板式換熱器取代翅片管換熱器做為冷凝器，在供冷的同時(shí)，冷凝器的冷凝熱及回收的燃?xì)獍l(fā)動(dòng)機(jī)余熱來(lái)制取生活用熱水。研究結(jié)果表明：回收冷凝器冷凝熱后系統(tǒng)的一次能源利用率PER得到了顯著提升，當(dāng)發(fā)動(dòng)機(jī)轉(zhuǎn)速為1900rpm時(shí)，系統(tǒng)的PER最小值也高達(dá)1.79，系統(tǒng)的節(jié)能效果顯著。 基于國(guó)內(nèi)四個(gè)城市氣象統(tǒng)計(jì)數(shù)據(jù)，對(duì)燃?xì)鈾C(jī)熱泵熱水器系統(tǒng)的制冷季節(jié)能效比（SEER）、制冷季節(jié)一次能源利用率（SPERr）、制熱季節(jié)能效比（HSPF）和制熱季節(jié)一次能源利用率（SPERh）進(jìn)行了計(jì)算。 在只考慮發(fā)動(dòng)機(jī)轉(zhuǎn)速和環(huán)境溫度的基礎(chǔ)上，提出了系統(tǒng)綜合一次能源利用率PERzh的定義，并對(duì)燃?xì)鈾C(jī)熱泵熱水器在非供冷和供熱季節(jié)的運(yùn)行進(jìn)行了評(píng)價(jià)，，在實(shí)驗(yàn)基礎(chǔ)上計(jì)算出系統(tǒng)的PERzh值為1.453，系統(tǒng)具有較高的一次能源利用率，節(jié)能效果明顯。
[Abstract]:Gas engine heat pump water heater system is a new type of device which takes natural gas as the primary energy input, provides cooling capacity for building refrigeration season, heat supply during heating season and daily hot water supply all the year round. In this paper, the theoretical simulation and experimental study of gas engine heat pump water heater system are carried out. Based on gas engine heat pump water heater system, the mathematical model of gas engine and heat pump system is established. The performance of gas engine heat pump water heater in winter heating season is studied by means of experiment and simulation. The results show that the model can effectively predict the performance of gas engine heat pump water heater. The operating characteristics of gas engine heat pump water heater in cycle heating mode and primary heating mode are compared and studied. The environmental temperature and cooling water flow rate of condenser are mainly considered in the research process. The effect of refrigerant superheat and engine speed on the performance of the system shows that the system has higher primary energy efficiency when running in primary heating mode. In the cooling season of gas engine heat pump water heater, plate heat exchanger is used as condenser instead of finned tube heat exchanger as condenser. At the same time, condensing heat of condenser and waste heat of gas engine are recovered to produce hot water for domestic use. The results show that the primary energy utilization rate (PER) of the system is significantly increased after the condensing heat is recovered. When the engine speed is 1900rpm, the minimum PER value of the system is also as high as 1.79, and the energy saving effect of the system is remarkable. Based on the meteorological statistics of four cities in China, the energy efficiency of gas engine heat pump water heater system in refrigeration season is higher than that of (SEER), refrigeration season. The energy efficiency of primary energy in the refrigeration season is (SPERr),. The seasonal energy efficiency ratio (HSPF) and primary energy efficiency (SPERh) of heating season were calculated. Based on the consideration of engine speed and ambient temperature, the definition of integrated primary energy efficiency (PERzh) is proposed, and the operation of gas engine heat pump water heater in non-cooling and heating season is evaluated. On the basis of experiments, the PERZ value of the system is calculated to be 1.453. The system has a high primary energy utilization rate, and the energy saving effect is obvious.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2013
【分類(lèi)號(hào)】：TU822

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