Constant temperature and humidity air conditioner dehumidifier

Constant temperature and humidity air conditioner dehumidifierConfirm before selectingCooling capacity, heating capacity, air supply volume, static pressure inside the machine, and residual pressure. These are necessary.Depending on the purpose, some parameters may be required, such as return air volume, fresh air volume, exhaust air volume, dehumidification capacity, humidification capacity, height, width, length, input power, voltage, etc

Experience in selecting modular air handling units

Constant temperature and humidity air conditioner dehumidifierIt is a commonly used end device in all air systems, usually including a flow equalization section, a filtration section (coarse, medium, high efficiency), a surface cooling section (or a water spraying section), a heating section, a humidification section, an air supply section, a return air section, an intermediate section, and a silencing section. Designers can flexibly select standard segments or components for combination based on parameters such as cooling (heating) load, supply air temperature, supply air humidity, noise, etc. Compared with fan coil units with fresh air systems and unit air conditioners, it has the advantages of large air volume processing, high air quality, and energy saving, especially suitable for large spaces such as shopping malls, exhibition halls, airports, and systems with large human flow.

A good air handling unit should have the characteristics of occupying less space, having multiple functions, low noise, low energy consumption, beautiful appearance, and easy installation and maintenance. However, due to its multiple functional segments and complex structure, in order to achieve a comprehensive consideration of both aspects, it requires designers and construction units to compare materials, manufacturing processes, structural characteristics, and selection calculations from multiple perspectives in order to achieve satisfactory results.

Constant temperature and humidity air conditioner dehumidifierEach functional segment
Combination clean air conditioning unit air volume from3500m3/hto200000m3/hplan30Various specifications in total12Various functional segments are available for users to freely choose and combine. Mainly suitable for air purification systems in various clean rooms. Such as industrial electronics factories, precision machinery manufacturing factories, textile workshops, automotive spray painting workshopsGMPPharmaceutical factories, cosmetics, food factories, pure water workshops, hospital operating departmentsICUWaiting for various occasions.
Classified by structural type, it can be divided into horizontal, vertical, and suspended ceiling types; Classified by usage characteristics, it can be divided into general units, fresh air units, purification units, and units (such as rooftop units, subway units, computer room units, etc.); It can also be classified by specifications, and the basic specifications of the unit can be represented by the rated air volume.

The setting of the functional section of the purification unit should be determined according to the production process or clean room requirements, which is a basic principle. The merging and selection of purification unit functional sections should be closely integrated with the design of the air conditioning room.

Microbial contamination points in the purification unit must be controlled. Due to the suitable structure, temperature and humidity for the growth of bacteria and other microorganisms, the box, filter, muffler, humidifier and other components of the purification unit have become potential microbial contamination points that must be controlled. If the unit casing is undamaged, rust free, resistant to disinfection, has good insulation and sealing performance, antibacterial materials widely used in refrigerators can be used; The performance indicators of the filter meet the requirements; Silencers, humidifiers, etc. do not retain condensable substances; Regularly clean or disinfect the unit.

Each functional section of the air conditioning unit1New return air mixing section The position of the new return air outlet can be set at the end, top, or left and right sides according to the design requirements. If it is different from this sample, the specific opening position should be provided. A regulating valve can be installed on the new return air outlet, and the actuator has three types: manual, electric, and pneumatic, which can be selected by the user.
2Filter section There are two types of primary and medium efficiency filters, equipped with diamond shaped bag and four peak bag, and can also be equipped with automatic winding. The filter material is made of high-quality polyester non-woven fabric, and the filter adopts a quick installation and removal mechanism, a cover display and alarm device.
3New exhaust section (also known as flat top split air mixing section) This section of the box is equipped with a primary return air valve, with one exhaust and one fresh air outlet on the top of the box before and after the valve, and equipped with a regulating valve. Its function is to supply air conditioning units with partial return air when there is a return air fan, so that the fresh air is mixed with the primary return air in the required proportion; When using a DC system during the transition season, the return air valve should be closed once, and the exhaust and fresh air valves should be fully opened.
4The energy recovery section is used for cross split air mixing and exhaust energy recovery in a dual fan system. There is a return air valve inside this section of the box, and the top is an energy recovery device. It is a device that uses the cold (hot) exhaust air to indirectly cool (heat) the fresh air. The fresh air passes through a plate type energy recovery device and can recover the sensible heat energy of the exhaust air60%about. At the same time, the exhaust and fresh air do not come into direct contact, making it particularly suitable for energy recovery in DC air conditioning systems that eliminate harmful gases indoors. When used in a DC system, the return air valve should be closed once. Hazardous gas sites should have separate exhaust systems and should not use this section.
5Middle section (maintenance section) This section is used for the connection of the transition section and the internal maintenance lighting of the unit. Before the filtering section, a middle section must be set up before and after the surface cooling section, heating section, and silencing section.
6Secondary return air section The middle section connected to the secondary return air pipe can be equipped with a regulating valve at the top, which is equipped with manual, electric or pneumatic adjustment mechanisms. Users can choose from this section, which can also be combined with the supply fan section.
7Cold section on the surface The surface cooler adopts a structure of four, six, and eight rows of copper tubes with aluminum foil in series. The aluminum foil is in the form of double flanged corrugated edges, reducing the use of large bent tube heat exchangers60%The welded elbow improves the mechanical expansion form of heat exchange and ensures the contact performance of the heat exchanger. The heat exchanger is divided into fixed and rotary types, and users can choose one according to their needs. The heat medium used is steam or hot water.

Classified by structural type, it can be divided into horizontal, vertical, and suspended ceiling types; Classified by usage characteristics, it can be divided into general units, fresh air units, purification units, and units (such as rooftop units, subway units, computer room units, etc.); It can also be classified by specifications, and the basic specifications of the unit can be represented by the rated air volume.

The setting of the functional section of the purification unit should be determined according to the production process or clean room requirements, which is a basic principle. The merging and selection of purification unit functional sections should be closely integrated with the design of the air conditioning room.

Microbial contamination points in the purification unit must be controlled. Due to the suitable structure, temperature and humidity for the growth of bacteria and other microorganisms, the box, filter, muffler, humidifier and other components of the purification unit have become potential microbial contamination points that must be controlled. If the unit casing is undamaged, rust free, resistant to disinfection, has good insulation and sealing performance, antibacterial materials widely used in refrigerators can be used; The performance indicators of the filter meet the requirements; Silencers, humidifiers, etc. do not retain condensable substances; Regularly clean or disinfect the unit.

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Note:1.Unit performance condition: refrigeration:Return air condition, fresh air volume<10%, temperature of air dried bulb27℃, entering rheumatic bulb temperature19.5℃,outlet water temperature7℃,return water temperature12Heating at ℃:Temperature of air dried balls15℃, hot water inlet temperature19.5℃,