Change the pump performance curve method

Pump performance curve to change the method of variable speed regulation, cutting impeller cylindrical and so on. 1, variable speed regulation: is in the pipe curve unchanged, with variable speed to change the pump performance curve, thereby changing their working point. When the speed changes, the head and flow will change, and with the speed increase, qv and H will be increased, with this method to adjust the flow and lift, will not produce additional energy loss, so this method is the most Economy. However, the original motivation put forward new requirements, that is, the prime mover should be adjustable speed, such as steam engine, internal combustion engine, etc., or additional transmission, due to large investment in transmission, the general small and medium-sized pumps rarely used. 2, cutting the impeller cylindrical: impeller diameter smaller after cutting, you can change the pump qv-H curve, the pump operating point also changes. Using this method to adjust the flow rate, a basic centrifugal pump can be equipped with several different diameter impeller, when the flow changes regularly, according to need to select. Using this method is more economical.

Island Light

Island Light is a type of Pendant Light commonly used over the central island in a kitchen or over a long table in a dining room. It typically has multiple bulbs to provide sufficient light to illuminate the entire area. Island Lights come in a wide variety of designs, ranging from traditional pendant styles to modern, industrial, or artistic designs. Island Lights not only provide light but can also serve as a decorative element in a room.

Chandelier Light is a commonly used lighting decoration on the island of a restaurant, which can not only meet the lighting function, but also serve as the main focal point decoration of the restaurant. The Island Light is made of a variety of materials, such as crystal, glass, metal, etc., and has a variety of design styles, which can be matched according to your preferences and the overall style of the restaurant. As a rule of thumb, a gap of 72 cm to 90 cm between the edge of the Lighting Fixture and the surface of the island is optimal. Small islands (1.2 to 1.5 m long) are usually suitable for two medium-sized Island Light or a large Island Light. As for the larger islands, three medium-sized or two larger Island Light can be handled.

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