Overview

Heat recovery fresh air desiccant unit is a new air handling equipment with solution (lithium bromide, lithium chloride, calcium chloride, etc.) as the working fluid. The unit is driven by a heat pump and adopts advanced solution dehumidification. The technology can adjust the temperature and humidity of the air by absorbing or releasing moisture into the air through the solution. The original dual-countercurrent total heat recovery technology can achieve more than 63% total heat recovery, making the system more energy-saving and dehumidifying. It is not an ordinary fresh air ventilator, it is a fresh air treatment equipment integrating cold and heat source, dehumidification section, regeneration section, filter section, full heat recovery section, air supply section and exhaust section. It has equipment for independent treatment of air temperature, humidity, filtration, deodorization, sterilization and other functions. It is flexible in application, simple in operation, energy saving, and suitable for various occasions requiring fresh air.

Advantages

1. Save energy and protect the environment

   ● The working temperature of the dehumidification section is 18-25℃, which avoids the energy waste caused by the need for reheating when the dehumidification temperature is too low, and improves the cooling capacity of the heat pump.

   ● Dehumidification cooling and solution regeneration are driven by heat pump, and more than 90% of condensation heat is recycled, which greatly improves the cooling efficiency of the system, and does not discharge waste heat to the surrounding.

   ● Using countercurrent solution recovery to increase the circulation speed of the heat recovery solution, the total heat recovery efficiency reaches over 63%.

2. Strong dehumidification ability and wide application range

   ● The air can be treated with various functions such as cooling and dehumidification, heating and dehumidification, cooling and humidifying, and heating and humidifying, which is suitable for fresh air treatment requirements throughout the year.

   ● Low-humidity treatment can be performed to meet the fresh air dehumidification needs of tropical and subtropical summer high temperature and high humidity environments.

3. Improve indoor air quality

   ● High-concentration salt solution can kill most bacteria, viruses and other molds, and the killing rate can reach more than 99%, providing a favorable defense weapon against airborne diseases such as influenza and coronavirus.

   ● Independent and precise control of temperature and humidity to provide comfortable, healthy and good indoor air. 

4. Stable performance

   ● The salt solution does not decompose, does not volatilize, has stable moisture absorption and regeneration efficiency, is less affected by changes in fresh air and return air parameters, does not decay in dehumidification performance, and has a long service life.

Features

1. Flow air supply design, high gas-liquid heat exchange efficiency, more compact volume than cross-flow air supply design, and equipment occupies a smaller area of the equipment room.

2. The super absorbent core is made of polymer fiber material through a series of processes such as compression molding, high temperature carbonization, bonding, curing, etc. It has the advantages of anti-aging, corrosion resistance, mildew resistance, and long service life.

3. With advanced solution concentration control technology, the unit has stronger and more accurate dehumidification capacity, and the minimum fresh air humidity can be controlled at about 3g/kg.

4. The original double countercurrent heat recovery technology, the two-stage pumps operate independently of each other, increase the circulation speed of the heat recovery solution, and recover the waste heat more efficiently, reaching more than 63%. 

5. International standard, reliable operation

   ● The solution tank is integrally formed, and there is no hidden danger of air leakage and liquid leakage.

   ● The heat exchanger is made of titanium tube and will never rust.

   ● Refrigeration components, controller components, water pumps, fans and other main components are all internationally renowned brands, which are stable and reliable.

Working Principle

Application

Hospitals, experiments, data centers, museums, theaters, high-end office buildings, pharmaceutical factories, microelectronic chip workshops, etc.

Specification

Note:

1. Nominal cooling and dehumidification conditions: fresh air dry bulb temperature 36°C, relative humidity 65%; nominal return air dry bulb temperature 26°C, relative humidity 60%; nominal supply air dry bulb temperature 18°C,

Relative humidity 59%.

2. Nominal heating and humidifying conditions: fresh air dry bulb temperature -5°C, relative humidity 50%; nominal return air dry bulb temperature 20°C, relative humidity 50%; nominal supply air dry bulb temperature 18°C,

Relative humidity 62%.

3. Under nominal operating conditions, the return air volume is equal to the fresh air volume. In actual operation, the return air volume should not be less than 80% of the fresh air volume.

4. City tap water can be used as supplementary water source without softening.

5. The fan of the unit can be specially adapted or configured with a frequency converter according to the customer's residual pressure requirements.

6. For non-standard units, please call our company for consultation.

Project Cases

 Bus Station

 Medical Places

 Large Building Space