Solar collectors, building integration, controls and system options for ventilation and process air.
THE TECHNOLOGY, EXPLAINED
How the collector heats incoming air.
A dark, micro-perforated absorber on a sun-facing façade or roof captures solar energy. Fans draw outdoor air through the perforations into an air cavity, then into the facility’s air-handling system or process air supply. This offsets heat that would otherwise be supplied by boilers, burners or other conventional equipment.
SolarWall heats air directly rather than producing electricity. The collector itself contains no liquid circuit, although the complete installation includes fans, dampers, ducts and controls.
A SolarWall collector belongs to a complete air-handling system. The useful result depends on absorption, pressure and airflow, solar exposure, duty cycle, controls and the baseline heat supply.
01 / TRANSPIRED ABSORBER
Direct solar-to-air transfer
A perforated metal absorber receives solar radiation; ventilation fans draw fresh air through the warm surface. The process avoids a separate fluid loop for basic air preheating.
02 / AIRFLOW
Air rate drives usable heat
SolarWall Global describes 2–10 cfm per square foot of collector in industrial configurations, depending on project design. Fan duty, plenum pressure and distribution affect the outcome.
03 / TEMPERATURE
Thermal lift depends on the day
SolarWall Türkiye publishes indicative diffuse-light lifts of 5–15 °C and sunny-day values of 25–40 °C for its Single-Stage descriptions. These are indicative rather than guaranteed for a facility.
04 / INTEGRATION
Connect to existing AHU systems
Coordinate supply ducting, air-handling units, fan and damper controls, heating-coil backup and the summer bypass with required air quality and process conditions.
05 / CONTROL
Solar heat only when useful
Control strategies compare collector and ambient temperatures with the required setpoint, schedule and process operating state; integration may include roof heat or return-air blending.
06 / MEASUREMENT
Make reported savings auditable
Instrument collector inlet and outlet temperatures, air volume, weather inputs, relevant damper states and baseline energy. Report delivered useful kWh separately from calculated fuel displacement.
60–85%*SolarWall Türkiye publishes this indicative thermal-efficiency range for certain configurations. Actual installed-system results depend on collector specification, air flow, weather and operating schedule.
*Published manufacturer indicative range, not a blanket warranty, measured result or an input for site-specific energy budgeting. Sources: SolarWall Türkiye, Teknolojiler; SolarWall Global, Industrial and Technology; NREL published research.
SOLUTION 01 / FACADE-INTEGRATED VENTILATION AIR HEATING
SolarWall® Single-Stage
Original transpired solar collector with a micro-perforated metal façade and a plenum connected to existing air-handling equipment. Suitable for retrofit and new-build industrial facilities.
200–1,000 W/m²Reported collector output range
Engineered to siteAirflow, orientation, climate and thermal load
Photograph or technical illustration from the SolarWall archive; representation of technology, not necessarily this specific system configuration.
01 / system configuration
Key features
Direct solar preheating of incoming ventilation or process air
Perforated absorber, cavity and insulated connection to the air-handling unit
Panel profiles and colours can be adapted to the building, subject to thermal considerations
02 / business value
Advantages
Displaces part of seasonal purchased heating energy
Makes use of a façade area as a renewable heat resource
Can improve comfort through tempered make-up air and airflow management
03 / engineering
Integration potential
Central AHUs, rooftop HVAC units and fresh-air ductwork
Dampers, sensors, summer bypass and control-system interfaces
Integration design depends on pressure drop, required supply temperature and airflow
04 / industry fit
Applications
Automotive and general manufacturing
Warehouses, logistics centres and assembly halls
Commercial buildings with substantial outdoor-air requirements
Technical ranges and system descriptions derive from SolarWall Türkiye or manufacturer literature. Actual output, temperature lift, energy displacement and economic return are project-specific and must be validated in an engineering feasibility study.
SOLUTION 02 / HIGHER TEMPERATURE LIFT FOR DEMANDING FACILITIES
SolarWall® Two-Stage
A two-stage collector that heats incoming air in successive steps, with additional protection against wind-related heat losses. Particularly relevant to industrial sites requiring greater preheat temperatures.
300–1,100 W/m²SolarWall Türkiye reported thermal range
Engineered to siteAirflow, orientation, climate and thermal load
Photograph or technical illustration from the SolarWall archive; representation of technology, not necessarily this specific system configuration.
01 / system configuration
Key features
Two successive heating stages using the solar air collector
Manufacturer describes a glazed second-stage configuration
Engineered for increased air temperature rise and higher thermal duty
02 / business value
Advantages
Improved thermal lift compared with the original single-stage approach
Potential fuel displacement for high-demand make-up air
Useful option for certain windy or roof-constrained sites
03 / engineering
Integration potential
Existing AHU systems, process air supply and rooftop arrangements
Temperature sensors, proportional dampers and BMS coordination
System choice depends on outdoor temperature and required thermal setpoint
04 / industry fit
Applications
Paint shops and industrial drying
Manufacturing with high outdoor-air demand
Facilities needing higher supply-air temperature
Technical ranges and system descriptions derive from SolarWall Türkiye or manufacturer literature. Actual output, temperature lift, energy displacement and economic return are project-specific and must be validated in an engineering feasibility study.
SOLUTION 03 / ROOFTOP SOLAR AIR HEATING FOR RETROFIT PROJECTS
SolarDuct® 1-Stage
A modular, duct-type roof collector developed for facilities where the façade is unavailable or a roof-based solution is more practical.
Roof-basedAlternative to façade mounting
Engineered to siteAirflow, orientation, climate and thermal load
Photograph or technical illustration from the SolarWall archive; representation of technology, not necessarily this specific system configuration.
01 / system configuration
Key features
Roof-mounted one-stage solar air heating configuration
Modular collector sections and duct connections
Designed to supply preheated intake air to building systems
02 / business value
Advantages
Utilises suitable roof area instead of the façade
Can be considered for retrofit projects with clear air-duct access
Modular form helps accommodate different roof layouts
03 / engineering
Integration potential
Feeds air-handling units via insulated duct connections
Airflow, roof loading and maintenance access must be reviewed
Controls can blend preheated air with ambient fresh air
04 / industry fit
Applications
Logistics buildings and warehouses
Medium-airflow manufacturing spaces
Commercial buildings without suitable solar-facing walls
Technical ranges and system descriptions derive from SolarWall Türkiye or manufacturer literature. Actual output, temperature lift, energy displacement and economic return are project-specific and must be validated in an engineering feasibility study.
SOLUTION 04 / MORE THERMAL LIFT FROM ROOF-MOUNTED COLLECTORS
SolarDuct® 2-Stage
A roof-based, two-stage configuration for air systems with demanding temperature and airflow requirements, subject to suitable roof capacity and weather exposure.
2 heating stagesRoof-mounted design
Engineered to siteAirflow, orientation, climate and thermal load
Photograph or technical illustration from the SolarWall archive; representation of technology, not necessarily this specific system configuration.
01 / system configuration
Key features
Two-stage modular duct collector
Roof installation with insulated process-air connections
Air-path arrangement tailored to temperature rise requirements
02 / business value
Advantages
Supports higher preheat temperatures in suitable conditions
Creates another design route where façade installations are impractical
Useful for process applications with significant thermal loads
03 / engineering
Integration potential
Fresh-air lines, rooftop equipment and process systems
Proportional damper control, bypass and BMS compatibility
Requires project-specific fan pressure and thermal calculations
04 / industry fit
Applications
Automotive paint facilities
Food processing and industrial drying
High-volume industrial ventilation
Technical ranges and system descriptions derive from SolarWall Türkiye or manufacturer literature. Actual output, temperature lift, energy displacement and economic return are project-specific and must be validated in an engineering feasibility study.
SOLUTION 05 / SOLAR HEAT FOR RECIRCULATING INDOOR AIR
Two-Stage Closed-Loop
An application concept described by SolarWall Türkiye that heats recirculated building air in two stages for certain space-heating demands. Suitability must account for indoor air quality and process ventilation obligations.
RecirculationSubject to indoor air standards
Engineered to siteAirflow, orientation, climate and thermal load
Photograph or technical illustration from the SolarWall archive; representation of technology, not necessarily this specific system configuration.
01 / system configuration
Key features
Two-stage thermal collection configuration
Air is recirculated through the heating loop
Can be configured for facilities where indoor air reuse is acceptable
02 / business value
Advantages
Supports high-bay space-heating requirements
Can contribute to more even temperatures in suitable facilities
Avoids unnecessary outside-air load where recirculation is permitted
03 / engineering
Integration potential
Mechanical recirculation and mixing units
Thermostatic and BMS controls
Fresh-air minimums and contaminant controls remain mandatory
04 / industry fit
Applications
High-bay production halls
Assembly and packaging areas
Suitable warehouses and workshops
Technical ranges and system descriptions derive from SolarWall Türkiye or manufacturer literature. Actual output, temperature lift, energy displacement and economic return are project-specific and must be validated in an engineering feasibility study.
SOLUTION 06 / USEFUL HEAT AND ELECTRICITY FROM THE SAME SURFACE
SolarWall® PV/T
PV modules generate electricity while a SolarWall thermal collector behind or adjacent to them extracts useful heat. It can improve use of a limited building envelope when both thermal and electrical loads exist.
Heat + powerIntegrated energy use
Engineered to siteAirflow, orientation, climate and thermal load
Photograph or technical illustration from the SolarWall archive; representation of technology, not necessarily this specific system configuration.
01 / system configuration
Key features
Combines photovoltaic conversion with a solar air collector
Extracts heat from the back of the PV array
Roof and façade applications depend on certified product configuration
02 / business value
Advantages
Two useful energy streams from the same available area
May reduce PV module operating temperature in suitable designs
Can supply preheated air to an HVAC system
03 / engineering
Integration potential
PV electrical installation and thermal air path are separately engineered
May integrate with heat pumps and building energy management
Electrical output and useful heat must be modelled independently
04 / industry fit
Applications
Industrial facilities with roof limitations
Large commercial buildings
Sites with simultaneous electricity and preheat requirements
Technical ranges and system descriptions derive from SolarWall Türkiye or manufacturer literature. Actual output, temperature lift, energy displacement and economic return are project-specific and must be validated in an engineering feasibility study.
SOLUTION 07 / NIGHT-TIME RADIATIVE COOLING SUPPORT
NightSolar®
A manufacturer-described configuration that uses night-sky radiative cooling to reduce incoming air temperature during suitable clear-sky conditions. It is not a substitute for cooling load calculations or required ventilation controls.
Night coolingClimate-dependent operation
Engineered to siteAirflow, orientation, climate and thermal load
Photograph or technical illustration from the SolarWall archive; representation of technology, not necessarily this specific system configuration.
01 / system configuration
Key features
Uses thermal radiation from the collector surface to the night sky
Can draw air over a cooler surface
Functions are climate, humidity and sky-condition dependent
02 / business value
Advantages
Potentially reduces mechanical cooling demand
May support night ventilation strategies
Can complement day-time thermal solar operation
03 / engineering
Integration potential
AHUs, ventilation and BMS controls
Fans may still consume electricity
Condensation, humidity, outdoor-air quality and control priorities need study
04 / industry fit
Applications
Industrial and logistics buildings
Commercial premises in warmer climates
Buildings with suitable night-time ventilation strategy
Technical ranges and system descriptions derive from SolarWall Türkiye or manufacturer literature. Actual output, temperature lift, energy displacement and economic return are project-specific and must be validated in an engineering feasibility study.
ENGINEERING INTEGRATION
From solar collector to useful heat.
Air handling integration
Ventilation schedules, fresh-air volume, pressure losses, fan selection, mixing requirements and winter/summer operating modes are modelled before equipment selection.
Controls and measurement
Temperature and flow measurement, proportional dampers, bypass devices and BMS logic are designed to supply useful heat at the appropriate conditions and monitor performance.
Indicative values from the SolarWall technical specification. System configuration and expected output are established during feasibility assessment.
1,000–3,000
kWh per m² per year
Indicative annual thermal production
40–200
m³/h airflow per m²
Airflow design range per collector area
60–85%
Solar conversion efficiency
Depends on installation and operating parameters
0.15–0.50 m
Collector-to-façade cavity
Reference design range for air gap
10–14 kg
Panel weight per m²
Panel specification reference
2–4 years
Indicative payback range
Financial estimate, not a universal project return
Integration and operation
Suitable configurations can be mounted on façades and rooftops and integrated with air-handling units, ventilation ducts and existing burners. Micro-perforated collectors transfer solar heat to incoming air; the installation can be combined with measurement and control systems to track performance.
Figures reproduced from the supplied SolarWall Technical Specifications and Performance Data sheet. Claims about certifications or regulatory compliance require product- and project-specific evidence and are intentionally excluded from this summary.
