Steam is dry saturated only when it has all of its latent heat, and its dryness is 1.
Based on the influence of steam dryness on calorific value, the measurement of dryness value can estimate or calculate its dryness by measuring the energy or heat contained in steam at a specific pressure through simple calorimetry.
If the steam contains 10% water by mass, the steam has a dryness of 90%, that is, the dryness is 0.9.
Therefore, the actual wet steam evaporation is not the hfg shown on the steam table, but the actual evaporation is the product of dryness x and hfg.Dryness = actual evaporation stew/evaporation stew
Since the state of condensate in steam is uncertain, the sampling position of steam dryness is in the middle, bottom, or top of the steam supply pipe. Due to the moisture film on the inner wall of the pipe or the different states of condensate accumulation and suspended water droplets at the bottom of the steam pipe, the dryness error may exceed 50%.
The sampling position of the steam dryness after the high-efficiency steam-water separator is no longer strict. The dryness after the high-efficiency steam-water separator is increased to dry saturated steam, and the total steam value contained in the steam should be equal to the steam value under the corresponding pressure. And use this to determine the treatment effect of the high-efficiency steam-water separator.
1. Technical parameters of steam generator:
Model: NBS-24KW-0.09Mpa
Rated evaporation capacity: 32kg/h
Rated working pressure: 0.09Mpa
Rated steam temperature:
119℃
Main steam diameter (DN): 15
Safety valve diameter (DN): 15
Inlet diameter (DN): 15
Drain valve diameter (DN): 15
Dimensions (mm): 835×620×1000 (subject to actual size)
Weight (KG): 125KG (subject to actual weight)
2. Design and structure of steam generator
(1) Comply with Chinese steam generator standard
(2) Low water level shutdown protection
(3) Overcurrent shutdown protection
3. The main electrical appliances and control system of the steam generator
(1) The main electric heater is selected from joint venture products
(2) The components of the main electrical control cabinet are all selected from well-known domestic brands
(3) Pressure limit automatic control device
(4) Safety valve automatic discharge device
(5) Power phase failure protection function
4. The main components of the steam generator
|
No.
|
Name
|
Specification
|
Quantity
|
|
One
|
Electric steam generator
|
NBS-24KW-0.7mpa
|
1
|
|
Two
|
Liner
|
stainless steel
|
1
|
|
Three
|
Cabinet
|
paint
|
1
|
|
Four
|
Safety valve
|
A28Y-16C DN15
|
1
|
|
Five
|
Pressure gauge
|
Y60 -ZT-0.25MPA
|
1
|
|
Six
|
Heating tube
|
12KW
|
1
|
|
Seven
|
Heating tube
|
12KW
|
1
|
|
Eight
|
Liquid level display gauge
|
17cm
|
1
|
|
Nine
|
High pressure scroll pump
|
750W
|
1
|
|
Ten
|
Liquid Level Relay
|
AFR-1 220VAC
|
1
|
|
Eleven
|
Pressure Controller
|
LP10
|
1
|
|
Twelve
|
Water tank
|
float
|
1
|
|
Thirteen
|
AC contactor
|
4011
|
2
|
|
Fourteen
|
Check valve
|
thread port
|
2
|
|
Fifteen
|
Drain valve
|
thread port
|
1
|
Superheater NBS-36KW-900℃ reference technical parameters
1. Technical parameters of steam generator:
Model: NBS-24KW-900℃
Rated working pressure: 0.09Mpa
Design temperature: 900°C
Energy consumption: 24KW/H
Fuel: Electricity
Power supply: 380v,50Hz
Product weight (kg): 368kg (subject to actual weight)
Dimensions (mm): 1480*1500*900 horizontal (subject to physical size)
2. The main components of the steam generator
|
No.
|
Name
|
Specification
|
Quantity
|
Brand
|
|
One
|
electric steam superheater
|
NBS-24KW
|
1
|
Nobeth
|
|
Two
|
Liner
|
stainless steel
|
1
|
Nobeth
|
|
Three
|
Cabinet
|
paint
|
1
|
Nobeth
|
|
Four
|
Safety valve
|
A48Y-16C DN25
|
1
|
Guangyi
|
|
Five
|
Pressure gauge
|
Y100 -0.25MPA
|
1
|
Hongqi
|
|
Six
|
Temperature Sensor
|
/
|
2
|
/
|
|
Seven
|
Steam outlet shut-off valve
|
DN20 flange connection
|
2
|
Peilin
|
