Detailed Description

The System Process Flow Is As Follows:

The liquid refrigerant in the evaporator of the unit is exchanged with the circulating air in the interior of the tank. The temperature rises from liquid to gas, and is sucked into the suction port of the compressor. The high-temperature and high-pressure refrigerant gas after compression by the compressor passes through The oil separator separates the refrigerating machine oil carried in the compression process, and then enters the condenser, and exchanges heat with ambient air or cooling water to change from high temperature and high pressure gas to high pressure normal temperature liquid. The high-pressure normal temperature refrigerant liquid is dried by a filter and then throttled and depressurized by an expansion valve, that is, from a high-pressure liquid to a low-pressure liquid. The low-pressure liquid (lower boiling point) enters the evaporator of the unit, and the cooling air is brought to the inside of the tank through the circulating air to achieve refrigeration.

Product features and advantages：

The anti-freeze solution is injected into the 80L pressure vessel, and the fully closed circulation system is adopted. This avoids the opportunity for the antifreeze to contact with the outside air and ensures the condensation of the water. After the expansion tank is protected by nitrogen, the temperature range of the heat transfer liquid is also broadened because its boiling point is increased. In addition, oxidation of the thermally conductive liquid in contact with oxygen in the environment is also avoided, thereby extending the useful life of the thermally conductive liquid.

Product parameters (All products can be customized)

Model		KRY-4A25W/2T
Temp Range		-40℃～+100℃
Temperature control precision		±0.5℃
Temperature feedback		Pt100
Temperature display		0.01k
Flow control/Group		1～20 L/min
Flow control accuracy/Group		±0.2L
Number of fluid output groups		2 groups
Pressure control/group		0.2bar～2.5bar
Flow pressure description		The unit can control the flow individually or separately. Need to control different solutions at the same time (customized)
Heating power		15kW*2
Cooling capacity	100℃	25kW*2
	20℃	25kW*2
	0℃	25kW*2
	-20℃	14kW*2
	-35℃	6.5kW*2
Compression		Emerson Valley Wheel / Danfoss Scroll flexible Compressor
Expansion valve		Emerson / Danfoss thermal expansion valve
Oil distributor		Emerson
Dry filter, Pressure control		Danfoss
Evaporator		Danfoss/KAORI plate heat exchanger
Circulating pump		German brand magnetic drive pump
Frequency converter		Delta
Flow,Pressure sensor		Electromagnetic flowmeter, Johnson Controls pressure sensor
Input,Display		Siemens 10-inch color touch screen \ Siemens s7-1200 PLC controller
Communication		Modbus RTU protocol RS485 interface, optional CAN communication bus, Ethernet interface TCP/IP protocol
Safety protection		Self-diagnosis function; freezer overload protection; high pressure pressure switch, overload relay, thermal protection device, low liquid level protection, high temperature protection, sensor fault protection, etc.
Closed circulation system		The whole system is a fully enclosed system. There is no oil mist at high temperature, and low temperature does not absorb moisture in the air. The system does not increase the pressure due to high temperature during operation, and the heat medium is automatically replenished at low temperature.
refrigerant		R404A/R507C/R125/N40 All four refrigerants are available
Connection size		There are two groups of inlet and outlet, G3/4
Cooling water at 20 C°		9000L/H
Condenser(W)		Shenshi tube type heat exchanger
Power 380V50HZ		70kW
Dimension(W) cm		145205205
Weight		1350kg
Optional		220V 60HZ Three phase 400V 50HZ Three phase 440V 60HZ Three phase
Optional		Extend to -40~+135℃
Optional		The size external circulation pipe line is DN15 or DN20, do not throttle, which will increase the circulation pump load, pipe need to be insulated, and adopt rubber and plastic insulation pipe which can afford high temp.

LNEYA attends various exhibitions at home and abroad every year. At the exhibition, we show the latest research equipment of LNEYA. Every year, long-term cooperative customers will come to exhibitions and communicate with us. We are also actively developing new customers to provide them with high quality machines and services.

After sale service

Quality assurance

Guarantee that the goods are sold to be conform to the provisions of the contract and qualified new products by factory inspection, quality performance, technical indicators and configured are in accordance with manufactures and technical documents stipulated in the contract.

Installation and debugging

After the arrival of the goods, my company or my company agent is responsible for installation and debugging of equipment need on-site installation and debugging.

Inspection and acceptance

After installation and debugging, acceptance by the customer to confirm the goods to be conform to the provisions of the contract and qualified new products, quality performance, technical indicators and configured are in accordance with manufactures and technical documents stipulated in the contract, and after the confirmation of a full set of technical documents, sign the installation acceptance report and confirm acceptance.

Training

At the same time of installation and debugging of equipment, my company’s after-sales service engineer is responsible for technical training for user until user can be skilled of operation. In the process of using equipment by customer, customer can consult relevant technical issues to after-sales service personal of our company at any time, according to the situation, my company will arrange training on site or remote.