Determine the efficiency of the fire pump is mainly affected by the mechanical, volumetric and hydraulic three kinds of efficiency, specifically, the main factors that affect the efficiency of the fire pump can be divided into the following categories:
1. The efficiency of the fire pump itself is the most fundamental impact. Fire pumps under the same operating conditions may vary in efficiency by more than 15%.
2. Fire pump operating conditions below the rated fire pump conditions, low fire pump efficiency, high energy consumption.
3. Motor efficiency in the use of the basic remain unchanged. So it is important to choose a high efficiency motor.
4. The main impact of mechanical efficiency and design and manufacturing quality. Fire pump selected, the latter part of the management less affected.
5. Hydraulic losses include hydraulic friction and local resistance loss. Fire pump operation for a certain period of time, inevitably cause impeller and vane and other parts of the surface wear and tear, hydraulic loss increases, reducing hydraulic efficiency.
6. Fire pump volume loss, also known as leakage losses, including the impeller seal ring, interstage, axial force balance of three types of leakage losses. The level of volumetric efficiency is not only related to the design and manufacture, but also related to the latter part of management. Fire pump continuous operation for a certain period of time, due to the friction between the parts, the gap increases, reducing the volumetric efficiency.
7. As a result of filter cylinder blockage, pipeline intake and other causes of fire pump pump down and idling.
8. Before the start of the fire pump, the staff did not pay attention to the preparatory work before the start of the fire pump. The implementation of the basic operation procedures such as warm fire pump, fire pump and perfusion fire pump is not thorough and often causes cavitation of the fire pump and causes fire pump noise Large, vibration, fire pump efficiency is low.
A heat exchanger is a device used to transfer heat, usually to transfer heat from one fluid to another without them mixing. A heat exchanger usually consists of a number of parallel pipes in which one fluid flows through the pipe and another fluid flows through the outside of the pipe. In this way, heat can be transferred from one fluid to another for heating or cooling purposes. Heat exchangers are widely used in many industries, such as chemical, pharmaceutical, food processing, air conditioning and heating systems, etc.
Heat exchanger usually consists of the following components:
1. Heat exchange pipe: Pipe used to transfer heat, usually made of metal materials, such as copper, stainless steel, etc.
2. Heat exchange surface: A surface used to transfer heat, usually consisting of metal sheets or pipes. The greater the surface area, the higher the heat transfer efficiency.
3. Housing: Housing, usually made of metal or plastic, used to secure heat exchange pipes and surfaces.
4. Seals: Seals used to prevent media leakage, usually made of rubber or silicone rubber.
5. Support: A support used to support a heat exchanger, usually made of steel or cast iron.
6. Import and export pipes: pipes used for medium entry and exit, usually made of metal or plastic.
7. Cleaning hole: A hole used to clean the inside of the heat exchanger, usually located on the upper or side of the heat exchanger.
8. Insulation layer: Insulation layer used to keep the temperature of the heat exchanger stable, usually made of glass wool or polyurethane foam.
The main business scope is various heaters, waste heat boilers, pressure vessels, supportingair preheaters, air coolers, furnace accessories and accessories, and provide equipment installation, with EPC ability of projects. At present, our customers have covered all large and medium-sized petrochemical enterprises in China and established long-term strategic cooperative partnership with them. Products are exported to Southeast Asia, Middle East, and other regions.
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Jiangsu Gelan Environmental Technology Co., LTD , https://www.etfiredheater.com