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Ventilation System Questions and Answers Issue131
Release time:2025-07-04 08:33:08| Views:

In Libya's extremely dry and hot climate, the ERV (Energy Recovery Ventilation) system needs to take into account efficient heat exchange, dust prevention and energy-saving cooling functions.

Combined with the geographical environment, population distribution and climate characteristics, the following areas are most suitable for deploying the system:


1. Coastal humid area: Green Mountain Area (Jabal al-Akhdar) ‌

Climate advantages ‌: It belongs to the Mediterranean climate, with high annual precipitation (a rare non-desert area in Libya), relatively moderate humidity, but still faces high temperatures in summer ‌.


Application scenarios ‌:

Urban residences and public buildings ‌: For example, in the capital Al Bayda, ERV can balance humidity and reduce air conditioning energy consumption.

Agricultural facilities ‌: Greenhouses need stable ventilation to prevent diseases caused by high humidity, while recovering energy to reduce temperature control costs ‌.

System adaptation points ‌: The filter module needs to be strengthened to deal with spring dust, and the heat exchange efficiency needs to be optimized (recommended enthalpy efficiency > 70%) ‌.


2. Desert Oasis: Sabha and its surrounding areas

Environmental characteristics: Dependence on groundwater sources to maintain agriculture and residence, large temperature difference between day and night (average daily temperature difference can reach 20℃),

 and prominent dust problem.

Core needs:

Constant humidity and temperature control in residential areas: ERV can recycle nighttime cooling for daytime cooling, and cooperate with the "sterilization mode" to purify microorganisms carried by dust.

Commercial transportation nodes: Airports and cargo stations need continuous ventilation to ensure air quality while reducing energy consumption.

Technical strengthening direction: Use explosion-proof motors (such as CBF explosion-proof fans) to resist high temperatures, and configure water-washed heat exchange cores to extend equipment life.


3. Emerging industries and newly built urban areas: Tripoli, Benghazi

Urban challenges: High-density buildings aggravate the heat island effect, and industrial emissions pollution is superimposed on dust.

Optimal application of ERV:Industrial plants: Combine explosion-proof ventilation design (such as spark-free aluminum alloy blades) to solve the problem of exhaust gas and dust in high-temperature workshops.

Commercial complex: The full heat exchange system can link air conditioning to reduce energy consumption by 40%, and the HEPA filter (H12 grade) blocks PM2.5 and industrial particulate matterInstallation specifications: Strictly follow the pipe sealing and insulation standards to prevent condensation from damaging the ceiling structure.


5. Key recommendations for system selection and installation

High temperature resistant design

Select models with an operating temperature of ≥60°C (refer to Liebherr's desert air conditioning technology), and the motor must pass the T4 group explosion-proof certification.

Multi-layer filtration and sand prevention

Combined with G4 primary filter (intercepting large particles of sand and dust) and F7 medium filter (adsorbing fine dust), the regular replacement cycle is shortened to 2 months.


Intelligent linkage control

Enable "sleep mode" (noise ≤22.3dB) to adapt to residential buildings, and industrial scenes can be connected in series with fans for boosting.


Energy adaptation solution


Solar auxiliary systems (such as Bedouin-inspired ventilation design) reduce grid dependence and are suitable for remote oases.

Summary ‌

Green Mountain area, Sabha Oasis and major industrial cities are the priority deployment areas of ERV system in Libya. Successful application needs to focus on the three cores of sand prevention, 

high temperature resistance and efficient heat recovery, and strictly follow the air duct sealing and explosion-proof safety standards. In areas with long sandstorm seasons, it is recommended

 to add additional pre-filters to protect the heat exchange core.

HRV Ventilation System ERV Fresh Air System

 
 
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