supermarket refrigerated showcase » article > display freezer > The selection of expansion valve in supermarket refrigerated showcase
The selection of expansion valve in supermarket refrigerated showcase
The selection of expansion valve in supermarket refrigerated showcase
The selection of expansion valve in supermarket refrigerated showcase Three types of thermal expansion valves. The selection of expansion valve is mainly based on the capacity of the valve. The pressure difference between the front and rear of the valve and other factors are considered when selecting the type, and its type is selected based on its refrigeration capacity.
1. The capacity characteristics of the manual expansion valve. When selecting, determine the valve diameter according to the pressure difference before and after the valve and the refrigeration capacity of the refrigeration circuit where the valve is located (slightly greater than the actual refrigeration capacity, the same below), and select the corresponding expansion valve model.
2. The float view is used to automatically adjust the liquid supply of the evaporator, intercooler and gas-liquid separator with free liquid surface. According to the way the liquid flows in it, it can be divided into straight-through and non-straight-through, and the latter is more commonly used. The float valve is generally selected according to the refrigeration capacity of the supermarket refrigerated showcase refrigeration system. The models and main technical performance parameters of some domestic float valves.
3. Thermal expansion valves Thermal expansion valves are commonly used in Freon refrigeration systems. It can automatically adjust the opening of the valve according to the degree of superheat of the refrigerant evaporation at the outlet of the evaporator, so as to achieve the purpose of adjusting the amount of refrigerant supply, so that the flow of the refrigerant matches the load of the evaporator. Thermal expansion valve is suitable for evaporators without free liquid surface, and it is divided into internal balance type and external balance type. The selection of the thermal expansion valve is mainly based on the cooling capacity, the type of refrigerant, the pressure difference before and after throttling, the flow resistance of the refrigerant in the evaporator tube, etc., and the performance parameters of the thermal expansion valve are used to determine the form and specification of the expansion valve. model. In general, a margin of 20% to 30% should be considered.
The above article comes from refrigerated showcase supermarket refrigerated showcase, supermarket refrigerated showcase, supermarket refrigerated showcase price, please log in: www.ihdjx.com
keywords：
Ranking of similar articles
- Watermelon fresh-keeping refrigerator can better preserve the nutrients of watermelon
- refrigerated showcase Refrigeration Equipment Co., Ltd. growth process
- 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
- Commercial refrigeration secondary failure machine noise is large (two)
- Supermarket refrigerated showcase, supermarket refrigerated showcase, frozen ark excess capacity
- display cases refrigeration but noisy maintenance (2)
- display cases The personal hygiene impact of the staff
- Selection of expansion valve in display cases (2)
- Display cooler evaporator embedding and production
- How to enhance the international competitiveness of the display cases industry
- General principles for the design and layout of walk-in cooler refrigeration systems (2)
- The accelerated development of supermarket refrigerated showcase is conducive to stimulating consumption
- Supermarket commercial refrigeration price range of refrigeration products directly affect the market
- The green and energy-saving supermarket supermarket refrigerated showcase has been improving
- General principles of design and layout of display cooler refrigeration system (3)
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