產品介紹

POE冷凍油

⇒技術數據表Technical Data Sheet
⇒產品 Product DM

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簡介 Introduction：
氫氟碳化合物（HFCs）是不含氯的氣體，目前已取代全球範圍內的氯氟烴（CFC）氣體，
成為更環保的製冷劑。 HFC-134a是一種無臭氧消耗潛能的氫氟烴，是使用中的主要製冷劑。
HFC與礦物油基潤滑劑系統的相容性差，導致在製冷劑應用中引入了合成潤滑劑。

合成多元醇酯（POE）潤滑劑在汽車工業中作為適用於空調系統的合成油已被廣泛確立，
而LUBETA EST多元醇酯的新穎結構差異也確保了潤滑劑能夠滿足用於組裝汽車的性能要求，
以及廣泛的工業和家用製冷劑和空調系統。
LUBETA EST與各種HFC的混溶性確保了它們適用於各種製冷劑，包括1,1,1,2-四氟乙烷（R134a），
五氟乙烷（R125），二氟甲烷（R32），1,1， 1-三氟乙烷（R143a）和基於這些混合物的製冷劑。

通常，諸如在汽車空調單元中發現的壓縮型製冷單元由壓縮機，冷凝器，膨脹球和蒸發器組成。
在這種製冷裝置中，通常溫度可以升高到40℃，通常是65℃或更高，而在冷卻器中，
溫度可能低至-40℃。
用於汽車空調單元的多元醇酯是眾所周知的，但是它們可能遭受兩個關鍵問題。
首先，在接近室溫和高於室溫的溫度下與氫氟烴進行相分離之一。
產生的富含HFC的相會導致潤滑不良並縮短壓縮機壽命，並且在關鍵溫度區域分離潤滑劑會降低壓縮機效率。
為了有效地潤滑壓縮機，避免相分離至關重要。
其次，多元醇酯具有吸濕性，超過可接受水平的水吸收會導致膨脹球中的水凍結，從而降低效率和潤滑。

Hydrofluorocarbons (HFCs) are chlorine-free gases, now replacing chlorofluorocarbon (CFC) Gases worldwide as more environmentally acceptable refrigerants. HFC-134a, a hydrofluorocarbon which has no ozone depletion potential, is the principle refrigerant in use. Poor compatibility of HFCs With mineral oil based lubricant systems has led to the introduction of synthetic lubricants for refrigerant applications.

Synthetic polyol ester (POE) lubricants are well established in the automotive industry as a synthetic fluid suitable for use in air conditioning systems, with the novel structural difference of LUBETA EST polyol esters also ensuring the lubricants meet the performance requirements for use in the assembly of a wide range of industrial and domestic refrigerant and air conditioning systems. Miscibility of the LUBETA ESTs with a wide range of HFCs ensures their suitability for use with a range of refrigerants, including 1,1,1,2- tetrafluoroethane (R134a), pentafluoroethane(R125), difluoromethane (R32), 1,1,1-trifluoroethane (R143a) and refrigerants based on blends of these.

Generally, a compression type refrigeration unit, such as found in automotive air-conditioning units, consists of a compressor, a condenser, expansion bulbs and an evaporator. In such a refrigeration unit, usually the temperature can rise to 40℃, often 65℃ or more, while in the cooler the temperature may be as low as -40℃. Polyol esters for automotive air-conditioning units are well known, however they can suffer from two key problems. Firstly, one of phase separation with the hydrofluorocarbon at temperatures close to room temperature and above. The resulting HFC-rich phase can result in poor lubrication and reduced compressor life, with separation of lubricant in critical temperature regions in reduced compressor efficiency.
For efficient lubrication of the compressor avoidance of phase separation is therefore crucial. Secondly, polyol esters are hygroscopic and the absorption of water above acceptable levels can cause freezing out of water in the expansion bulbs, resulting in reduced efficiency and lubrication.

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