JL (D) purified water-cooled air conditioner

How it works:

The operation of the constant humidity machine system is through three mutual systems: refrigerant circulation system, air circulation system, electrical automatic control system;

Refrigerant circulation system:
   The liquid refrigerant in the evaporator absorbs the heat of the air (the air is cooled and dehumidified) and begins to evaporate，A certain temperature difference is formed between the refrigerant and the air，The liquid refrigerant also evaporates into a gaseous state，After being sucked in and compressed by the compressor (pressure and temperature increase),The gaseous refrigerant absorbs heat through a condenser (air-cooled/water-cooled)，Condense into liquid。After being throttled through the expansion valve (or capillary), low temperature and low pressure refrigerant enters the evaporator to complete the refrigerant circulation process。

Air circulation system:
  The fan is responsible for inhaling the air from the return air outlet, and the air is sent to the space required by the user through the evaporator (cooling, dehumidification), humidifier, and heater (heating), and the sent air is mixed with the air in the space and returned to the return air outlet。

Electrical automatic control system:
   Including power supply part and automatic control part。
   The power supply part supplies power to compressors, fans, and humidifiers through contactors。
   Automatic control is divided into temperature, humidity control and fault protection:
   Temperature and humidity control is to compare the temperature and humidity of the return air with the temperature and humidity set by the user through the temperature and humidity controller, and automatically run the compressor (cooling and dehumidifying), humidifier, electric heating (heating) and other components to achieve automatic control of constant temperature and humidity。
   Fault protection control is achieved through the combination of pressure protection, delay device, relay, overload protection, etc., to control the fault protection of compressor, fan, humidifier and other components。

Unit features:

1. Well controlled:
The unit is controlled by intelligent instrument or programmable controller (PLC)，High control precision and good reliability，Unit instrument can reserve remote control interface，Convenient remote centralized control，节省管理人力；Comprehensive application of modern control technology, optimize the control model to ensure that the unit operation mode adapt to the change of working conditions throughout the year, improve the unit seasonal energy efficiency；

2. Multiple protection:
The unit is equipped with high pressure, low pressure, overload, short circuit, phase break, overheating, low wind pressure and other protection, as well as water pump, fire valve chain protection;

3. Full range of high Energy Efficiency ratio (EER) scroll compressors (up to 50Hp) and semi-enclosed screw compressors (up to 60Hp)。

4. The seasonal energy efficiency ratio (SEER) was taken as the optimization goal，The system matching theory is introduced comprehensively，Computer aided design technology is widely used，Optimize the design (selection) of the structural parameters of each component of the refrigeration system，Make the performance of each component in the system match properly，So that it can form a whole whole，To ensure efficient and reliable operation in a variety of operating conditions throughout the year。

5. Comprehensive application of modern control technology, optimize the control model to ensure that the unit operation mode adapt to the change of working conditions throughout the year, improve the unit seasonal energy efficiency。

6. A multi-purpose machine, wide temperature control range (5~32℃), high operating efficiency throughout the year。There is a fresh air ventilator interface, the user can configure the fresh air ventilator, in the transition season and winter, the unit can automatically introduce the outdoor low temperature air into the room, to achieve the purpose of ventilation and cooling, but also can reduce the running time of the host, in order to achieve the purpose of energy saving。This feature is especially suitable for the occasions where ventilation is needed in the transitional season and cooling is needed in winter。

7. The unit uses environmental protection working medium, selects environmentally friendly materials, adopts new technology and new process that meet environmental protection requirements, so that the whole process of the unit can meet environmental protection requirements。

8. The unit can be equipped with automatic control sterilization device to ensure that the air in the air conditioning room is clean。

Structural features:

1. Compressor:
The selection of high-performance imported compressor, safe, reliable, high energy efficiency。

2. 风机：
The centrifugal fan with high performance and low noise has the advantages of large air volume, high static pressure, low noise and smooth running。

3. Heat exchanger:
The introduction of American OAK production line processing, so that the heat exchange efficiency of the heat exchanger greatly improved。

4. 外壳：
 Indoor unit:Using Japan AMADA equipment processing, with excellent appearance quality。The following 30Hp frame adopts the new aluminum alloy arc edge frame structure popular at home and abroad;More than 40Hp adopts the new rhomboid-sided aluminum alloy frame structure, the overall structure is compact, beautiful and generous, rich modern flavor。
 Outdoor unit:The heat exchanger adopts one time bending forming technology, which has beautiful appearance and good heat transfer effect。The shell is sprayed with high-quality steel plate surface or stainless steel material, and the unit will never rust when placed in the open air。

5. Humidifier:
High performance humidifier is selected, which has the characteristics of good control performance, high humidification efficiency, safety and reliability。

6. Heater:
High efficiency ribbed electric heat pipe, small size, high heat work conversion rate。

7. Refrigeration accessories:
Expansion valve, filter, solenoid valve, high and low pressure controller, pressure gauge and other accessories are selected products。

8. Defrosting agency:
The use of highly reliable components and high-performance control mode to ensure the safety and reliability of the unit defrosting during low temperature operation, as well as the frost layer treatment, thus increasing the heat transfer performance of the unit。

9. Insulation layer:
High performance thermal insulation material, low thermal conductivity, high water resistance, anti-aging, flame retardant, non-toxic。

10. Multiple protection:
The unit is equipped with high pressure, low pressure, overload, short circuit, phase break, overheating, low wind pressure and other protection, as well as water pump, fire valve chain protection。

11. Control mode:
The constant temperature and humidity unit adopts high performance programmable control instrument。High control precision and good reliability。The instrument is reserved with a remote control interface, which can facilitate the user to remote centralized control and save management manpower。 

Type preparation instructions:

Model examples:HF19N represents an air-cooled unit air conditioning unit with a compressor with a nominal cooling capacity of 19kW placed indoors。

JL(D) series water-cooled chillerPerformance parameter table:

Nominal working condition of the unit:

Note: L-type unit is single cooling type, without heating device and heat production。