Calculating power with flow

1. After a certain amount of traffic, such as the 99 yuan provincial wireless traffic package, the first 20g is 4G traffic, and the speed limit between 20-100g is 1mpbs = 128K / s. when it reaches 100g, the network will be disconnected.

2.

KB, m, MB and so on represent the billing unit of traffic

Kilobyte, written in KB or K, is a unit of information measurement, which is a multiple of the storage unit byte of computer data memory

nowadays, it is usually used to mark the storage capacity of storage media with general capacity such as memory. According to the international system of units, 1KB = 1000B (byte)

The unit conversion is as follows:

1KB = 1024b; 1MB=1024KB=1024 × 1024B

1B (byte) = 8 bits (see below)

1KB (kilobyte) = 1024b = 2 ^ 10B

1MB (megabyte, megabyte, megabyte for short) = 1024KB = 2 ^ 20b

1GB (gigabyte, gigabyte, gigabyte, also known as "Gigabyte") = 1024MB = 2 ^ 30b

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traffic saving methods

many friends have been complaining that their mobile phone traffic is not enough, which has a certain relationship with the method of using mobile phones

if the mobile phone has WiFi function, try to use WiFi wherever possible

when browsing a web page, if you can turn off the picture animation sound, try to turn it off, and upload the picture as small as possible before uploading

when downloading something, try to use the software download with breakpoint continuation function to avoid having to download again when the line is broken

check the background program of networking frequently. If you can set the time interval of software networking, you can set it as large as possible (such as checking e-mail time). Turn off the functions of automatic software update and automatic network access to information

use the flow saving browser, open the compression transfer, low color and other functions

try not to download too much music, movies, applications, etc

3. The sum of the two
please adopt....

4.

1g is equal to 1024m

the unit of mobile traffic is 1024, and the common units include GB (g), MB (m), KB, B. The algorithm comes from the way of data storage in computer

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tips for using mobile traffic:

1. Turn off automatic synchronization: Android system turns on automatic synchronization by default. If you update Gmail, calendar and contact data on your mobile phone, it will automatically synchronize to Google server, which will generate a lot of data traffic

2. Turn off the GPRS connection when you don't need to use the network: this can basically prevent the background application data traffic from running away in most of the time

When downloading materials and software, WiFi network should be used as much as possible

5. The basic parameters of the pump include flow and pressure. The pressure requirement for basic irrigation is not high. The tap water pressure is about 0.4 MPa. You should consider more flow, 30 ml times 100

6. The main technical calculation of pipeline is as follows: 1. The diameter and wall thickness are determined according to the medium parameters, flow rate, pipeline layout and allowable pressure drop; 2. The pressure drop is calculated according to the medium parameters, flow rate and pipe diameter, and the flow capacity of the pipeline is checked.

7. It depends on how many meters of packages you handle. Now that you have downloaded 360 traffic monitoring, you should pay more attention to traffic monitoring. Don't use it too much, otherwise it will cause cost loss. I suggest you distribute it equally. If you have a 150m package a month, you can use less than 5m traffic a day. I am now a month of 60m traffic, but usually use WiFi, home units have wireless routing, so every month a lot of surplus!

8. The head is the pressure. It says that there is no need to calculate. 15m is 1.5kg = 0.15Mpa

9. The main technical calculation of pipeline is as follows: 1. The diameter and wall thickness are determined according to the medium parameters, flow rate, pipeline layout and allowable pressure drop; 2. The pressure drop is calculated according to the medium parameters, flow rate and pipe diameter, and the flow capacity of the pipeline is checked. All kinds of medium fluid in the pipeline have the recommended value of allowable flow rate. You can check the allowable flow rate according to the medium and its parameters, estimate the allowable flow rate, and then check the pressure drop. Your other problem is that the pressure is mainly used to determine the parameters of the medium and determine the wall thickness of the pipeline.

10. Calculation of general liquid Kv value

A. non blocking flow discriminant: △ P calculation formula: kV = 10ql, where: FL - pressure recovery coefficient, see attached table FF - critical pressure ratio coefficient of fluid, FF = 0.96-0.28 PV - saturated vapor pressure (absolute pressure), kPa PC - thermodynamic critical pressure (absolute pressure), kPa QL - liquid flow M / h under valve inlet temperature ρ- Liquid density g / cm P1 - pressure in front of valve (absolute pressure) kPa P2 - pressure behind valve (absolute pressure) kPa B. judgment formula of blocking flow: △ P ≥ FL (p1-ffpv) calculation formula: kV = 10ql, in which: the meaning and unit of each character are the same as those before

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