本文選題：空氣源熱泵 + 低溫�。� 參考：《燕山大學(xué)》2013年碩士論文

【摘要】：方興未艾的空氣源熱泵技術(shù)，依靠把空氣作為低溫熱源的靈活、實用性，在我國許多地區(qū)得到了迅猛的發(fā)展。但在向華北、東北地區(qū)推廣的過程中，成熟的普通空氣源熱泵技術(shù)暴露出了一些問題，其中最明顯的問題是在低溫工況下因壓縮比過大導(dǎo)致工質(zhì)循環(huán)量降低和排氣溫度升高，從而導(dǎo)致指示效率偏低，甚至還出現(xiàn)機組低溫保護頻繁停機的問題，影響系統(tǒng)制熱性能和運行穩(wěn)定性。 為了克服上述弊端，有效擴大空氣源熱泵的低溫應(yīng)用范圍，本文在總結(jié)普通空氣源熱泵技術(shù)特點，研究低溫影響機理的基礎(chǔ)上，提出一種在北方地區(qū)實用并具有廣闊市場前景的低溫空氣源熱泵制熱新技術(shù)——過冷型經(jīng)濟器輔助噴氣增焓數(shù)碼渦旋空氣源熱泵系統(tǒng)（Enhanced Vapor Injection Air Source Heat Pump SystemCoupled with Scroll Compressor and Undercooling Economizer，簡稱EVIU系統(tǒng)，下同），并聯(lián)合企業(yè)的加工、試驗平臺，對上述系統(tǒng)進行了技術(shù)實施和現(xiàn)場試驗。 針對一種可應(yīng)用于南方地區(qū)的數(shù)碼渦旋空氣源熱泵加冰蓄冷空調(diào)模式和一種可應(yīng)用于北方地區(qū)的EVIU系統(tǒng)加毛細管網(wǎng)采暖模式，研究了容量計算方法和工程性價比問題，以求在保證功能品質(zhì)的基礎(chǔ)上達到更好的節(jié)能、環(huán)保效果。 通過系統(tǒng)對比測試，證實了EVIU系統(tǒng)在較低環(huán)境溫度條件下應(yīng)用的可行性，與直流變頻熱泵相比，EVIU系統(tǒng)具有“小功率，大熱量，超低溫，更穩(wěn)定”的技術(shù)優(yōu)勢。評價EVIU系統(tǒng)的工程應(yīng)用經(jīng)濟性，對三聯(lián)供機組在采暖期、生活熱水工況和空調(diào)制冷工況分別進行了經(jīng)濟評價，并從設(shè)計角度探討了EVIU系統(tǒng)泳池機工程的熱量計算和系統(tǒng)設(shè)計方法。 針對另一種具有競爭力的低溫空氣源熱泵即雙級壓縮熱泵技術(shù)，對其制熱性能系數(shù)及相關(guān)技術(shù)參數(shù)進行了研究。利用實際工程數(shù)據(jù)分析了其工程應(yīng)用的技術(shù)因素和經(jīng)濟性，為EVIU系統(tǒng)方案提供了技術(shù)支持。研究結(jié)果證明，EVIU系統(tǒng)方案在保證系統(tǒng)功能滿足用戶要求的前提下，，無論在全年運行費用，還是在初投資、運行費用方面，都優(yōu)于其它系統(tǒng)，本文提出的低溫空氣源熱泵方案具有實用價值。
[Abstract]:The emerging air source heat pump technology, relying on the flexibility and practicability of using air as a low temperature heat source, has been developing rapidly in many areas of China. But in the process of popularizing to North China and Northeast China, the mature common air source heat pump technology has exposed some problems, the most obvious problem is that the working fluid circulation quantity decreases and the exhaust temperature rises at low temperature because the compression ratio is too large. This leads to the low efficiency of indication and even the frequent shutdown of the low temperature protection of the unit, which affects the heating performance and operation stability of the system. In order to overcome the above disadvantages and effectively expand the low temperature application range of air source heat pump, this paper summarizes the technical characteristics of ordinary air source heat pump, and studies the mechanism of low temperature influence. A new heating technology of low temperature air source heat pump with wide market prospect in the north of China is presented. It is an enhanced Vapor injection Air Source Heat pump coupled with Scroll Compressor and, which is assisted by a supercooled economizer for the enthalpy increasing enthalpy digital vortex air source heat pump system. Undercooling economy, or EVIU, The technical implementation and field test of the above system are carried out on the processing and test platform of the joint enterprise. Aiming at a digital vortex air source heat pump with ice storage air conditioning mode and an EVIU system with capillary net heating mode in the north region, the capacity calculation method and the engineering performance-price ratio are studied. In order to ensure the functional quality on the basis of better energy-saving, environmental protection effect. The feasibility of EVIU system in low ambient temperature is proved by system comparison test. Compared with DC frequency conversion heat pump, EVIU system has the technical advantages of "small power, large heat, ultra-low temperature, more stable". To evaluate the engineering application economy of EVIU system, the economic evaluation of triple supply unit in heating period, domestic hot water condition and air conditioning and refrigeration condition were carried out respectively. From the point of view of design, the heat calculation and system design method of EVIU swimming pool machine are discussed. Aiming at another competitive low temperature air source heat pump, two stage compression heat pump technology, the heating performance coefficient and related technical parameters are studied. The technical factors and economy of its engineering application are analyzed by using the actual engineering data, which provides technical support for the EVIU system scheme. The research results show that the EVIU system scheme is superior to other systems in terms of operating cost, initial investment and operation cost, while ensuring that the system functions meet the requirements of users. The low-temperature air source heat pump proposed in this paper has practical value.
【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TU83

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