Telecom Shelter Cooling Solution

Overview

Chunshu Cooling provides a complete Telecom Shelter Cooling Solution for 24/7 temperature control in unattended outdoor sites. We offer three proven architectures—48V DC inverter split air conditioners, free cooling (air economizer) with AC backup, and packaged wall-mounted telecom shelter HVAC—to match different climates, power supplies, and energy-saving targets.

Applications: BTS / Base Station Shelters, Outdoor Equipment Shelters, Power Shelters (Rectifier/Power Rooms), and Hybrid / Off-Grid Telecom Sites.

Telecom shelter

Shelter air conditioner_outdoor unit

Shelter air conditioner_indoor unit

Typical Shelter Challenges

Telecom shelters face unique thermal and operational challenges:

• High ambient temperature (often 45–55°C) combined with strong solar radiation

• High sensible heat loads from radios, rectifiers, batteries, and power electronics

• Dust / sand / salt fog that can block airflow and accelerate corrosion

• Unattended operation requiring high reliability, alarms, and remote diagnostics

• Limited or unstable power supply (especially at hybrid/off-grid DC sites)

• Energy cost pressure and operator requirements for measurable power reduction

Three Product Options

Option A – 48V DC Inverter Split Air Conditioner (Telecom Shelter)

Designed for 48V DC powered sites and hybrid/off-grid applications. Split design improves installation flexibility, and dual-unit configurations support redundancy and smart rotation.

Best for: DC sites, hybrid solar + battery systems, locations requiring low inrush current and high energy efficiency.

Highlights

• Direct 48V DC input (site-friendly), inverter control

• High efficiency and stable control for 24/7 operation

• Optional dual units for duty/standby or staged cooling

• Remote monitoring interfaces available (e.g., RS485 / alarm contacts)

  
  

48VDC Split air conditioner_outdoor unit

48VDC Split air conditioner_indoor unit

Telecom shelter_air cooling system_applicaition

Option B – Telecom Shelter Free Cooling Unit (FCU) / Air Economizer + AC Backup

Free cooling uses ambient air when conditions allow to reduce compressor runtime. This architecture combines an economizer (FCU) with a standard air conditioner under smart logic.

Best for: Regions with cool nights/winters or long “free-cooling hours”, retrofit energy-saving projects, sites targeting lower OPEX.

Highlights

• Auto switching: Free Cooling → Mixed Mode → Mechanical Backup

• Lower energy consumption and reduced compressor wear

• Filtration strategy available for dusty environments

• Humidity monitoring / control logic options

Free cooling unit(-Supply air unit+Exhaust air unit)

Free cooling unit supply air unit_Front view

Free cooling unit supply air unit_Side view

Option C – Packaged Wall-Mounted Telecom Shelter HVAC (Wall-Mount AC)

A rugged all-in-one wall-mounted unit designed for telecom shelters—fast to install, easy to service, and optimized for harsh outdoor use.

Best for: New shelter rollouts, high-ambient regions, projects requiring standardized installation and strong environmental protection.

Highlights

• Packaged wall-mount design for quick deployment

• Strong protection for outdoor environments (project-dependent IP level)

• Stable performance for electronics shelters

• Remote alarms and monitoring interfaces available

Wall mounted AC-Indoor

Wall mounted AC-Outdoor

How to Select

Use this simple selection logic:

Step 1: Power Supply

• 48V DC / Hybrid / Off-grid → Choose Option A (48V DC split AC)

• AC mains available (230VAC / 380VAC) → Option B or C depending on climate and goals

Step 2: Climate & Energy-Saving Target

• Cool nights / winters / strong energy-saving requirement → Option B (FCU + AC backup)

• Hot desert / high ambient for long periods → Option C (wall-mount HVAC) or Option A if DC power is required

Step 3: Reliability Requirement

• Critical site / no downtime → Consider dual-unit design (Option A) or N+1 configuration (Option C)

Scenario Packages (for quick proposal)

1. Hot Desert Package (45–55°C ambient): Wall-Mounted HVAC (Option C) + optional redundancy

2. Energy-Saving Package (temperate climate): Free Cooling FCU + AC Backup (Option B)

3. Hybrid/Off-Grid DC Package: 48V DC Split AC (Option A) + optional Free Cooling to reduce battery consumption

   
   

Control & Monitoring

A shelter cooling solution must be manageable remotely. Chunshu Cooling solutions can support:

• Remote monitoring & alarms: unit status, high temperature alarm, fan fault, compressor fault, filter maintenance reminder (FCU), door/auxiliary input (optional)

• Interfaces (project dependent): RS485 (Modbus), dry contact alarms, optional SNMP gateway integration

• Smart control logic: staged cooling, rotation control for dual units, free cooling priority with AC backup

This approach reduces maintenance cost and improves uptime in unattended sites.

LCD touch display_SNMP communication card

Reliability for Harsh Environments

Designed for outdoor telecom deployments where reliability matters most:

• Dust / sand protection: filtration options and airflow design to maintain stable cooling

• Anti-corrosion measures: coated coils / protective treatment options for coastal or industrial environments

• High ambient operation: robust components, thermal design for extreme temperature sites

• Unattended operation readiness: alarms, fault protection, remote diagnostics, and service-friendly layout

IP55, waterproof and dustproof

Intelligent operation, unmanned

Options & Accessories

To match real-world site conditions, we provide configurable options:

• Filtration levels: standard / enhanced filters for dusty regions (FCU and air intake systems)

• Anti-corrosion protection: coil coating, hardware treatment for salt fog/coastal sites

• Heating (optional): for cold climates or condensation control strategies

• Condensate management: drain kit, evaporative solutions (project dependent), anti-freeze measures where required

• Monitoring accessories: SNMP gateway, additional sensors (temperature/humidity), door switch input, runtime logging

Get a Proposal

Send us the following inputs and we will recommend the best architecture and capacity, plus a clear BOM/installation concept:

1. Shelter size (L × W × H) and insulation level

2. Internal heat load (kW): radios / rectifiers / batteries / other equipment

3. Target indoor temperature and max ambient temperature

4. Power supply: 48VDC / 230VAC / 380VAC

5. Site conditions: dust/sand/salt fog level, maintenance frequency, uptime requirement

Contact Chunshu Cooling to receive a fast selection proposal and recommended configuration (Option A/B/C, or hybrid combination).

FAQ 

Q1: Which solution is best for 48V DC powered sites?
Option A (48V DC inverter split AC) is typically the first choice for hybrid/off-grid telecom sites.

Q2: What is a “free cooling unit” / “air economizer” for telecom shelters?
It uses favorable outdoor conditions to provide cooling with fans and controlled airflow, reducing compressor runtime. When conditions are not suitable, the system switches to AC backup automatically.

Q3: How do I know if free cooling will actually save energy at my site?
Savings depend on local climate (free-cooling hours), filtration strategy, and control logic. Share your site location and temperature profile and we can estimate suitability.

Q4: Do telecom shelters need dehumidification?
Many shelters are high sensible-load environments, but humidity control may still be required to prevent condensation risk. We offer monitoring and control options based on project conditions.

Q5: What about dust, sand, and filter maintenance?
For high-dust regions, filtration level and maintenance frequency are critical—especially for economizer solutions. We can recommend a filtration strategy and service interval.

Q6: How do you handle coastal salt fog and corrosion?
We offer anti-corrosion options such as coated coils and treated hardware for coastal or industrial environments (project dependent).

Q7: What interfaces are available for remote monitoring?
Typical options include RS485/Modbus and dry-contact alarms, with optional SNMP gateway integration depending on the site monitoring system.

Q8: Should I plan redundancy for critical shelters?
Yes. Dual-unit configurations (Option A) or N+1 planning (Option C) are recommended where uptime is critical.