Walk-in cooler lubricating oil
walk-in cooler lubricating oil
lubricating oil can be divided into the following two categories according to the manufacturing process of walk-in cooler.
1) Natural mineral oil Natural mineral oil is referred to as mineral oil, which is the lubricating oil extracted from petroleum. As a fraction of petroleum, mineral oil usually has a smaller polarity and they can only be dissolved in walk-in cooler refrigerants with weak or non-polar polarity, such as R600a, R12, etc.
2) Synthetic oil Synthetic oil is abbreviated as synthetic oil, which is a lubricating oil synthesized by artificial chemical methods in accordance with the requirements of a specific walk-in cooler refrigerant. Synthetic oil is mainly proposed to make up for the defect that mineral oil is difficult to dissolve with polar walk-in cooler refrigerant. Therefore, synthetic oil usually has a strong polarity, and they can be dissolved in a strong polar refrigerant. , Such as R134a, R717, etc.
synthetic oil mainly includes polyols, polyesters and polar synthetic hydrocarbons. The choice of lubricating oil mainly depends on the type of walk-in cooler refrigerant, compressor type and operating conditions (evaporating temperature, condensing temperature), etc. Generally, the brand recommended by the walk-in cooler manufacturer is used. When choosing lubricating oil, the first thing to consider is the low-temperature performance of the lubricating oil and its compatibility with walk-in cooler refrigerant. The lubricating oil that comes out of the walk-in cooler compressor and enters the evaporator along with the refrigerant due to the decrease in temperature. If the refrigerant dissolves the lubricating oil poorly, the lubricating oil in the walk-in cooler must pass through the evaporator An oil film is formed on the wall of the heat pipe, which increases thermal resistance and reduces system performance. Due to the presence of lubricating oil, the surface heat transfer coefficient of R22 is lower than that of pure walk-in cooler refrigerant. In addition, because R22 has a greater solubility for mineral oil than ester oils, ester lubricants have a greater impact on the heat transfer performance of R22.
The above articles are from refrigerated showcase walk-in cooler and display cases
. For details, please log in: www.ihdjx.com Free Order Hotline: +86 18019567573 Contact: Mr. Shao 26066250@qq.com
keywords:
Ranking of similar articles
- refrigerated showcase Refrigeration Equipment Co., Ltd. growth process
- Watermelon fresh-keeping refrigerator can better preserve the nutrients of watermelon
- Refrigerated showcase ltd. refrigeration has been a leader in innovation and energy saving
- The advantage of western restaurant made salad bar - refrigerated showcase
- Refrigerated showcase warm, kick off the new offers
- Don't put the frozen food in shenzhen supermarket display cooler, rapid freezer storage in shenzhen more than two
- Supermarket walk - cooler in fruits and vegetables preservation equipment
- Refrigerated showcase display cooler company 2012 annual celebration
- How to enhance the international competitiveness of the display cases industry
- display cases refrigeration but noisy maintenance (2)
- Commercial refrigeration secondary failure machine noise is large (two)
- Display cooler evaporator embedding and production
- Selection of expansion valve in display cases (2)
- Supermarket commercial refrigeration price range of refrigeration products directly affect the market
- Supermarket refrigerated showcase, supermarket refrigerated showcase, frozen ark excess capacity
- The accelerated development of supermarket refrigerated showcase is conducive to stimulating consumption
- General principles of design and layout of display cooler refrigeration system (3)
- General principles for the design and layout of walk-in cooler refrigeration systems (2)
- The green and energy-saving supermarket supermarket refrigerated showcase has been improving
- display cases The personal hygiene impact of the staff
Latest news articles
- May 2011 refrigerated showcase Qingyuan Tour
- refrigerated showcase Refrigeration Equipment Co., Ltd. growth process
- Refrigerated showcase major sales walk - cooler in class
- Refrigerated showcase display cooler written commercial display cooler legend
- Refrigerated showcase walk - in cooler energy-saving progresses steadily
- 2012 take care of the old man from the supermarket refrigerated showcase
- refrigerated showcase Tip: Which fruits are not suitable for placing in the fruit refrigerated showcase
- Dragon fruit reveals ark makes pitaya ornamental fruit
- Watermelon fresh-keeping refrigerator can better preserve the nutrients of watermelon
- Represent the frozen watermelon fruit for storage
- Hairy crabs freezer frozen taste more fresh
- How hairy crabs fresh refrigerated showcase display cooler tell you
- Large supermarket display ark how to choose the right goods
- Small convenience store owner should show how to choose the convenience stores ltd. refrigeration
- Refrigerated showcase ltd. refrigeration has been a leader in innovation and energy saving
- In September 2012, refrigerated showcase west chung
- Refrigerated showcase walk - in cooler cleaner which aspects should be paid attention to
- Correctly use refrigerated showcase supermarket refrigerated showcase the matters needing attention
- , a refrigerated display showcase meat cooler features of the product
- Refrigerated showcase walk - in the cooler is icy