Dehumidification air conditioning unit for underground engineering

NegotiableUpdate on 11/12

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Overview

Product Name: Dehumidification Air Conditioner for Underground Engineering Description: Unit Overview: Dehumidification Air Conditioner for Underground Engineering is a new type of dehumidification air conditioner developed by our company based on more than ten years of professional design and manufacturing experience in air conditioning dehumidification equipment. Through extensive data collection and analysis, we have developed this new type of dehumidification air conditioner for underground engineering or similar underground engineering environments. It is suitable for places with both general air conditioning and dehumidification requirements, such as national defense engineering, civil defense engineering, subway stations, aerospace bases, underground shopping malls, and underground entertainment centers

Product Details

Product Name: Dehumidification Air Conditioner for Underground Engineering
explain:Unit Overview:
The dehumidification air conditioning unit for underground engineering is a new type of dehumidification air conditioning equipment developed by our company based on more than ten years of professional design and manufacturing experience in air conditioning dehumidification equipment. Through extensive data collection and analysis, we have developed a series of dehumidification air conditioning equipment for underground engineering or similar underground engineering environments. It is suitable for places with both general air conditioning and dehumidification requirements, such as national defense engineering, civil defense engineering, subway stations, aerospace bases, underground shopping malls, and underground entertainment centers.
This series of products adopts a new design concept, tailored to the heat and humidity load characteristics of underground engineering, and uses a large number of new materials, technologies, and processes. The unit has both central air conditioning and dehumidifier functions, truly achieving multi-purpose use with superior performance indicators, making it a pioneer in energy conservation and environmental protection in the new era.

Working Principle:

The operation of the dehumidification unit system consists of the internal circulation of the dehumidifier (refrigerant circulation system) and the external circulation of the dehumidifier (air circulation system);

The internal circulation of a dehumidifier: through the operation of the compressor → discharging high-temperature and high-pressure gas from the exhaust port → entering the condenser for cooling → becoming low-temperature and high-pressure gas → intercepting flow through capillary tubes → becoming low-temperature and low-pressure liquid → evaporating and absorbing heat through the evaporator → returning to the compressor to become low-temperature and low-pressure gas, and so on.

External circulation of dehumidifier: Under normal startup conditions → through the operation of the fan → humid air is sucked in from the inlet → passes through the evaporator → the evaporator adsorbs moisture in the air onto the aluminum sheet → becomes dry air (→ passes through the condenser for heat dissipation) → blows out from the outlet.

Unit characteristics:

1. Multi functional and versatile:
The unit has good engineering adaptability and can achieve three operating modes: air conditioning, dehumidification, and dehumidification temperature regulation. The unit operates at full load in air conditioning mode, which can effectively eliminate internal waste heat and reduce air temperature, making it suitable for periods with high engineering heat demand; The unit operates in partial load mode for dehumidification, mainly used for dehumidification during periods of low residual heat and high residual humidity in the project. With the cooperation of adjustable equipment, it can achieve low air volume operation to ensure that the relative humidity inside the project meets the requirements. It is particularly suitable for regular maintenance, management, and operation of underground projects; The unit operates at full load in dehumidification and temperature control mode, suitable for routine maintenance, management, and operation of underground engineering; The unit operates at full load in dehumidification and temperature control mode, which is suitable for the operation of both peacetime and wartime projects in transitional seasons and under conditions of low and high residual heat. It can effectively eliminate indoor residual heat.

2. Energy saving operation--Heat recovery:
By utilizing condensation heat as the secondary heating source for air conditioning units, the operating costs of the units have been reduced, energy consumption has been saved, and the energy-saving indicators of the units have been comprehensively improved.

3. structural type"personalization"：
The dehumidification air conditioning unit used in underground engineering adopts a modular design concept and a modular structure, which is composed of a mixed air filtration section, a cooling and reheating section, an air supply section, and a main unit section. Free assembly, simple connection, and easy disassembly.

4. Energy regulation:
The unit achieves multiple operating modes through the use of high-performance screw compressors or scroll compressors, and adopts a combination of variable speed fans and compressor energy regulation through staged adjustment.

5. Direct evaporation, efficient refrigeration:
The unit is a multi-functional combined dehumidification air conditioning equipment with a built-in cold source (direct evaporation type), integrating the refrigeration system, ventilation system, and control system. Compared with units that use chilled water as the secondary refrigerant, it is simple, efficient, and has an efficiency increase of more than 10%; The evaporator layout design fully utilizes the evaporator area, and at 50% load, the evaporator efficiency is increased by more than 30%, resulting in high refrigeration efficiency. The installation of the unit is convenient, and on-site operation only requires wiring and connection.

6. Compressor and Cold Distribution:
The compressor and main refrigeration components are made of internationally renowned products. Through scientific and rational optimization design of the refrigeration system, the unit has low noise, reliable operation, and high energy efficiency.

7. Heat exchanger:
The water side heat exchanger is a shell and tube heat exchanger, using high-efficiency heat exchange tubes; The air side heat exchanger is a copper tube aluminum fin heat exchanger, manufactured using the OAK heat exchanger production line in the United States. The heat exchanger has a compact structure, good pressure, and high heat transfer efficiency.

8. Environmentally friendly working fluid,"green"Concept:
The unit uses R22 refrigerant that meets the requirements of the national plan to phase out CFCs, which is beneficial to the global environment. The company can also customize dehumidifiers with HFC working fluids such as R407C and R134a according to user requirements.

9. Shell:
The unit adopts the popular high-strength aluminum profile frame at home and abroad; The bent parts are processed using Japanese AMADA CNC equipment and have excellent appearance quality. The unit adopts an assembled structure, with a compact overall structure, beautiful and elegant appearance, and rich modern atmosphere.

10. Fully automatic control:
The unit fully applies modern control technology, optimizes control models, uses advanced PLC as the control system, comes with a control cabinet to ensure control accuracy, and achieves perfect electromechanical integration. The crew is equipped with a friendly and simple all Chinese human-machine interface, with a standard configuration of text display or touch screen according to user requirements.

11. Optional network functions:
The unit can be connected to a remote computer through a modem or Ethernet module, and data exchange can be carried out using the Internet to remotely monitor and analyze faults of the unit, helping you quickly and accurately predict and eliminate faults. The group control function of the local area network unit can also be achieved through the PROFIBUS bus.

12. Multiple protections:
The unit is equipped with overload, short circuit, phase loss, overheating, high and low voltage protection, as well as interlocking protection for fans, water pumps, and fire dampers.

13. Function segment introduction:
Mixed air filtration section:Mix fresh air and return air, and filter the mixed air, mainly including fresh air flange, return air flange, and primary filter.
Cooling and reheating section:Corresponding heat and humidity treatment is carried out on the air, mainly including evaporator and air-cooled condenser.
Air supply section:Transporting the processed air to the destination mainly includes variable speed fans and shock absorbers, with an upward air outlet method.
Host segment:The compression and condensation treatment of the refrigerant is mainly composed of refrigeration components such as compressors and water-cooled condensers, as well as electrical control systems (including fans for Type I machines).
Others:Our company can also add auxiliary functional sections such as medium efficiency filtration and intermediate sections according to the actual needs of users to meet the air treatment requirements of different occasions.

Model designation description:
The air intake method is specified as follows: facing the controller, the air return port on the left side is called left air intake, and the air return port on the right side is called right air intake;
The cooling water inlet and outlet of this series of units are distributed on opposite sides of the controller, with the controller on the front and the cooling water inlet and outlet on the back.

Model example:CK12-DX represents a dehumidifier air conditioner for southern underground engineering with a nominal air volume of 12000m3/h and an end return air method. It faces the unit controller and has a return air outlet on the right side.

Southern type-Basic Performance Parameter Table:

typenumber		CK9-DX	CK12-DX	CK15-DX	CK20-DX	CK25-DX	CK30-DX	CK35-DX	CK40-DX	CK45-DX
refrigeration capacity	KW	62	72	95	120	148	175	210	242	276
dehumidification capacity	Kg/h	32	40	50	75	90	100	120	135	150
external static pressure	Pa	500	500	650	650	700	700	700	700	600
unit power	KW	18.5	22.5	30.6	41	55.6	63	74	80	99

Southern type-IPerformance parameter table:

typenumber		CK9-DX-I	CK12-DX-I	CK15-DX-I	CK20-DX-I	CK25-DX-I
refrigeration capacity	KW	62	72	95	120	148
dehumidification capacity	Kg/h	32	40	50	75	90
external static pressure	Pa	500	600	650	650	700
unit power	KW	19.4	26	30.6	41	55.6

北方型-Basic type andSPerformance parameter table:

typenumber		CK9-BDX	CK12-BDX	CK15-BDX	CK20-BDX	CK25-BDX	CK30-BDX	CK35-BDX	CK40-BDX	CK45-BDX
refrigeration capacity	KW	62	72	95	120	148	175	210	242	276
heating capacity	KW	24	27	36	45	48	60	72	90	99
dehumidification capacity	Kg/h	32	40	50	75	90	100	120	135	150
Humidification capacity	Kg/h	4	8	10	12	15	36	44	48	56
external static pressure	Pa	450	450	550	550	550	600	600	6000	500
unit power	KW	30.5	37.6	55.4	73.5	83.5	102.3	114.3	144.2	165.2

Unit nominal operating conditions:

evaporator side		condenser side				Remarks
evaporator side		water-cooled		Air-cooled type		Remarks
dry-bulb temperature℃	Relative humidity%	inlet water temperature℃	outlet water temperature℃	dry-bulb temperature℃	wet-bulb temperature℃
27	60	30	35	35	--	--