Low Temperature Annealing for PV Solar Cell

• After-sales Service: 12 Months
• Warranty: 12 Months
• Type: PV Firing Furnace
• Certification: CE, ISO
• Structure: Horizontal Type
• Brand: Hengli
• Model NO.: HSK25003-2803Z
• Effective Height: 30mm
• Furnace Weight: 60000kg
• Rated Temperature: 200c
• Maximum Temperature: 300c
• Heating Element: Heating Wire
• Transport Package: Wooden Box Iron Bracket
• Specification: 41120× 3730× 2000mm
• Trademark: HENGLI
• Origin: China
• HS Code: 8514390090
• Production Capacity: 300set/Year

Product Description

1,Typical application fields

Typical application fields

Mainly used for heat treatment processes such as activation and annealing of solar cell glass substrates under air atmosphere conditions

 

1. Equipment specification and structure:

Code	Name		Length	Note
A	Total length		41120mm
B	Load/ unload table		1000mm	The length of load and unload table is the same, and the height from the ground is 1000 ± 50mm
C	Furnace frame		39120mm
D	Entrance vestibule part		370mm	Including air curtain
E	Entrance insulation part		600mm	Ceramic fiber material insulation transition
F	Heating part		25200mm	28 temperature zones,the length of each zone is 900 mm, and power of each zone  is 28 kW. Totally is 616KW
G	Free cooling part		1540mm	No heating element, use thermal insulation material
H	Cooling part		5705mm	Three sections water-cooled steel sleeve (coil type), adjustable flow rate. One point water temperature detection, including 350mm air-cooleded sleeve (air curtain, soft curtain)
I	Exit air cooling part		5705mm	High air volume forced air cooling
K	Equipment height		2000mm	Excluding chimney and foundation height
L	Equipment operation panel position
Chamber structure		Adopting segmented and openable stainless steel inner structure
Effective height		30mm
Furnace weight		About 60000kg
Dimensions		41120×3730×2000mm(L×W×H),excluding foundation, chimney and indicator light
Appearance color		Outside panel uses high temperature spraying coating and off-white color.
Special requirements		With belt drying function

4,Thermal system:

Rated temperature	200ºC
Maximum temperature	300ºC
Heating element	Heating wire ( belt cross-section divided into 7 sections for heating)
Heating power	616kW
Heat preservation power of empty furnace	≤185KW
Number of temperature zones	28 zones
Temperature control points	197 points(7 points for temperature control in each zone; 1 point for water temperature detection)
Thermocouple	K type
Surface temperature rise	<35ºC
Discharge temperature	<60ºC(typical belt speed)
Temperature control stability	±1ºC
Temperature uniformity	±2ºC(Constant temperature zone)

5,Transmission system:

Belt width	2500mm
Belt specification	B251014
Belt material	SUS316
Maximum load	15Kg/m^2(excluding belt weight)
Transmission mode	Friction drive with large wrap angle
Speed range	300-2000mm/min, variable frequency stepless speed regulation. Design belt speed 975mm/min
Drive system	The drive control adopts frequency converter to drive the motor, which is controlled by reducer, and the speed is continuously adjustable
Transmission structure	Belt conveyor device: to drive the driving and drived wheel through chain and sprocket wheel, and then generate the friction force by driving wheel and the belt drive the belt running. There is a belt deviation guide device on the both sides at the entrance and exit.
Belt cleaning mode	Ultrasonic cleaning machine

6,Atmosphere system:

Atmosphere control system		Including air inlet pipes, exhaust system
Air inlet pipes: The range of firing discharge assisted flow meter is 28~280L/Min, and the range of other flow meters is 48~480L/Min
A	Entrance air curtain		Entrance air curtain (divided into 5 pipes of air intake), with each flow meter measuring range is 48-480L/min
B	Heating part air inlet		Fresh air replenishment (divided into 5 pipes of intake), with each flow meter measuring range is 48-480L/min
C	Rubber discharge air outlet		Set up one set of exhaust gas collection pipeline and filtration system, connected to the chimney, and a drainage capacity ≤ 50m3/min
D	Firing air inlet		1 pipe of air intake (divided into 5 pipes of air intake), with each flow meter measuring range is 48-480L/min, distributed in the last water jacket of the water-cooled section
E	Exit air curtain		Exit air curtain (divided into 5 pipes of intake), with each flow meter measuring range of 48-480L/min
F	Cooling part exhaust		In the air cooling area, the blower blows air, and the air displacement is about 150m3/min
Each atmosphere flow meter displays the actual flow rate

7,Cooling system:

Cooling structure	Stainless steel cooling jacket surface mounted water-cooled coil
Cooling mode	Water cooling
Cooling detection	Cooling water jacket 1-point water temperature detection
Alarm indication	Low water pressure alarm and overtemperature alarm

8,Safety protection:

Belt stop button	One stop button is set for each entrance and exit end plate. After pressing it, the belt stops running
Alarm indication	Overtemperature, temperature deviation, frequency converter alarm, thermocouple broken, low air pressure, low water press and parts overrun ureaudible and visual alarm