What does the safety valve discharge coefficient mean?

1 Answers
LaMila
07/30/25 2:05am
Safety valve discharge coefficient is the ratio of the actual discharge to the theoretical discharge of a safety valve, which is an important performance indicator of the safety valve, also known as the safety valve relief coefficient. Actual discharge of the safety valve: The actual discharge is the measured medium release quantity at the rated discharge pressure. Rated discharge of the safety valve: The rated discharge refers to the portion of the actual discharge that is allowed as the applicable benchmark for the safety valve. Theoretical discharge of the safety valve: The theoretical discharge is the calculated discharge of an ideal nozzle with a flow channel cross-sectional area equal to the flow channel area of the safety valve. Rated discharge coefficient of the safety valve: The rated discharge coefficient of the safety valve is the product of the discharge coefficient and the reduction coefficient (the reduction coefficient is generally taken as 0.9).
Was this review help?
6
4
Share
More Forum Discussions

What is Most Likely to Puncture a Car Tire?

Under normal circumstances, triangular road spikes are the most likely to puncture a car tire. Below are the situations that may occur after a tire puncture and the corresponding solutions: 1. Severe air leakage: If the tire is losing air rapidly, it is not advisable to continue driving. You should promptly pull over to a safe location and call for roadside assistance or replace the tire with a spare to reach the nearest repair shop. Continuing to drive not only causes irreversible damage to the inner wall of the tire and the wheel rim but also significantly affects the vehicle's handling performance. 2. Slow air leakage: If the tire is losing air slowly, you can drive at a low speed to the nearest repair shop. It is recommended to plan your route in advance and locate the nearest auto repair shop to minimize the distance traveled. 3. No air leakage: If the tire is punctured but there is no air leakage, it can still be used. However, it should not be ignored indefinitely, as this could greatly impact driving safety.
13
5
Share

How to turn on the high beam of Buick GL8?

The method to turn on the high beam of Buick GL8 is: There is a round switch (light switch) on the left front of the steering wheel. Turn it to the right and pull it back to turn on the high beam, and turn it to the left to turn off the high beam. The high beam is one of the important functions of a car. Compared with the low beam, the high beam emits parallel light, which is concentrated and brighter, allowing it to illuminate higher and farther objects, providing great assistance to the driver's vision at night. Taking the Buick GL8 2021 Land Business Class 652T Smart Premium as an example: The length, width, and height of this car are 5238mm, 1878mm, and 1800mm respectively, with a wheelbase of 3088mm, and the body type is a 5-door 7-seater MPV.
12
0
Share

What Causes Cylinder Misfire in the Teana?

Here are the reasons for cylinder misfire in the Teana: 1. Damaged ignition coil; 2. Severe carbon buildup on spark plugs; 3. Clogged fuel injectors. Below is how an automotive cylinder works: Air in the engine cylinder converts thermal energy into mechanical energy through expansion; gas in the compressor cylinder is compressed by the piston to increase pressure, thereby providing a power source. The following are classifications of cylinders: 1. Single-acting cylinder: Only one end has a piston rod, with air supplied from one side of the piston to generate pressure, which pushes the piston to extend, returning via spring or gravity; 2. Double-acting cylinder: Air is alternately supplied from both sides of the piston, outputting force in one or two directions; 3. Diaphragm cylinder: Uses a diaphragm instead of a piston, outputting force in only one direction and resetting with a spring. It has good sealing performance but a short stroke; 4. Impact cylinder: This is a new type of component. It converts the pressure energy of compressed gas into the kinetic energy of the piston's high-speed (10~20 m/s) movement to perform work. The impact cylinder adds a middle cover with a nozzle and a drain port.
5
2
Share

Is the Xingyue L Equipped with a Volvo Engine?

The Xingyue L uses a Volvo engine, which is produced at the Volvo Zhangjiakou factory in China. The engine model used in the Xingyue L is the DHE15-ESZ, with a maximum horsepower of 150 HP, a maximum power output of 180 KW, and a maximum torque of 545 Nm. For daily maintenance of the Xingyue L's engine, the following methods can be employed: Use lubricating oil of the appropriate quality grade. For gasoline engines, select SD to SF grade gasoline engine oil based on the additional equipment in the intake and exhaust systems and usage conditions. For diesel engines, choose CB to CD grade diesel engine oil according to mechanical load, with the selection standard not lower than the manufacturer's specified requirements. Regularly change the engine oil and oil filter. The quality of any grade of lubricating oil will change during use. After a certain mileage, its performance deteriorates, which can cause various problems for the engine. To avoid malfunctions, change the oil regularly based on usage conditions and maintain an appropriate oil level. When oil passes through the fine pores of the filter, solid particles and viscous substances in the oil accumulate in the filter. If the filter becomes clogged and oil cannot pass through the filter element, it may rupture the filter element or open the safety valve, allowing oil to bypass through the bypass valve and carry contaminants back to the lubrication areas, accelerating engine wear and increasing internal contamination. Regularly clean the crankcase. During engine operation, high-pressure unburned gases, acids, moisture, sulfur, and nitrogen oxides from the combustion chamber enter the crankcase through the gap between the piston rings and cylinder walls. These substances mix with metal powder from component wear to form sludge. A small amount of sludge remains suspended in the oil, while a large amount precipitates, clogging filters and oil passages, making engine lubrication difficult and causing wear. Regularly use a radiator cleaner to clean the radiator. Removing rust and scale not only ensures the engine operates normally but also extends the overall lifespan of the radiator and engine.
14
5
Share

What are the differences between traditional cars and pure electric vehicles?

Traditional cars and pure electric vehicles differ in the following aspects: 1. Structure: (1) Pure electric vehicles eliminate the traditional mechanical transmission system layout and add a power battery pack and electronic control equipment, which makes their deformation posture and mechanical characteristics in collisions different from those of traditional cars; (2) The stiffness of the lower body of electric vehicles in the battery layout area is relatively low, and due to factors such as human-machine interface and battery space, it cannot be optimized. To achieve a level comparable to traditional cars, reinforcement is needed at the front shock absorber and rear suspension spring areas; (3) Due to the current limitations in energy storage and range (time factor) and the weight of the battery pack reaching several hundred kilograms (weight factor), the demand for lightweight body design is stronger in electric vehicles than in traditional cars. 2. Environmental protection: (1) New energy vehicles are quieter than traditional cars because the main noise source in fuel-powered vehicles is the combustion engine. Therefore, replacing fuel-powered cars with electric vehicles is a primary method to reduce urban noise pollution; (2) New energy vehicles are environmentally friendly, unlike traditional cars that emit a large amount of carbon monoxide, carbon dioxide, hydrocarbons, and other exhaust gases, which can severely impact urban road environments and reduce air quality.
14
4
Share

How Many Times Can You Take the Driving Test Subject 3?

You can take the driving test Subject 3 up to five times. Here are some important notes about the driving test: 1. Applicants: If you cannot attend the test at the scheduled time, you must apply to cancel the appointment one day in advance. If an applicant fails to attend the test at the scheduled time, the test will be marked as failed. 2. Within the validity period of the driving skill test permit: The number of appointments for Subject 2 and Subject 3 road driving skill tests cannot exceed five. If the fifth test appointment still results in failure, the passing scores of other previously passed subjects will be invalidated. 3. Tests must be taken in order and require prior appointment: The three subjects must be scheduled for tests in sequence. After each subject is scheduled, you can take the test once and have one retake. If you do not attend the retake or fail the retake, you must schedule the test again. 4. Subject 1 and Subject 4 can be scheduled for tests without limit: There is no limit on the number of appointments for Subject 1 and the safe and civilized driving knowledge test. The safe and civilized driving knowledge test can only be taken after passing the Subject 3 road driving skill test. If you fail, you can directly apply for a retake, and the previously passed road driving skill test scores remain valid.
16
3
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.