Local heat exchange coefficient measurement experimental device when air plunder tablets

1. Determine the --r heat control coefficient when the --r plunder flows across the tablet surface;

2. Based on the similar analysis of the inspiration process of the forced exercise, the experimental data is organized into a standard formula.

2. Technical indicators

1. Electro -plated copper tablet test parts: Δ = 0.1 mm, 280mm in length, 190 mm width, surface blackness ε = 0.2, thermal conductivity λ = 15 (w/m ℃);

2. Electro -plated copper tablets Electric heater power supply: AC220V, rated current 5A, electric heating power: ≤500W;

3. Digital display voltage table: AC220V, accuracy 0.2;

4. Digital display current: 5A, accuracy of 0.2 levels.

5. Electro -plated copper tablet temperature test sensor.

6. Temperature measurement: -55 ~+127 ° C, accuracy: ± 0.2fs;

7. Micro -pressure meter; Requirements: 0 ～ 1000Pa, accuracy: 0.25 level

8. Multi -wing low noise fan: full pressure 450 ~ 350Pa,

The --r volume is 1300 ~ 3300m3/h, and the speed is 1450R/min.

9. Operation under normal temperature and normal pressure, working power supply: three -phase and five lines 380V ± 10%, 50Hz, power of 500W; safety protection: ground protection, leakage protection, overcurrent protection;

10. Installation of power lines and control lines: It is necessary to use environmentally friendly flame retardant electrical wiring grooves to standardize and organize the characteristics of national standards. It has the characteristics of insulation, arc -proof, flame retardant self -extinguishing. Change the line;

Note: PLC, inverter can be configured separately, or you can also use the PLC inverter speed adjustment tr--ning device to use

 

Features

 

The "frequency frequency constant pressure water supply tr--ning model" is a equipment carefully developed and developed by the company with the increasingly mature and improved technology. This model can simulate the life and fire water supply system of residential areas and high -rise buildings. The model is m--nly composed of water pumps, pressure transmitters, reservoirs, faucet and other equipment. It can complete tr--ning projects such as conventional motor frequency conversion speed, static pressure fixed value control, dynamic frequency conversion constant pressure water supply.

It can be widely used in the tr--ning device equipped with a inverter experimental hanging or with a inverter, a relay contactor tr--ning mount.

 

Technical Parameters

 

1. Work power supply: three -phase and four -line system AC380V ± 10%/50Hz;

2. Working environment: temperature+3 ℃-+45 ℃; relative humidity <85%(25 ℃); altitude <4000m;

3. Frequency range: 25Hz-50Hz;

4, shape size: 500mm × 375mm × 1700mm;

5. Scope of pressure control: low pressure control 4-12kPa; high pressure control 10-35kPa.

 

Inverter module (optional):

 

The Siemens MM420 series high -performance inverter, three -phase output, output power 0.37kW. Integrated RS485 communication interface to provide BOP operation panels; with linear V/F control, square V/F, programming multi -point settings V/F control, magnetic flux current control (FCC) and other control modes. Input 3 integrated digital quantity, input 1 simulation input, output 1 simulation amount, and 1 relay output; have overvoltage, under voltage protection, inverter, motor over temperature protection, ground fault protection, short circuit protection and other protection functions.