Driving Sustainable Growth with Advanced Thermal Energy Solutions
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Thermal energy solutions directly capture and deliver heat for domestic hot water, space heating, pools, and low‑to‑medium‑temperature industrial processes. With high conversion efficiency and simple maintenance, they are among the fastest, most cost‑effective ways to cut emissions where heat demand dominates.
About Soletks Solar
Soletks Solar designs and manufactures flat plate collectors, PVT hybrid panels, and complete solar water heating systems for residential, commercial, and industrial customers. Our products feature high‑selectivity absorbers, laser‑welded fins, hail‑resistant glass, and corrosion‑proof housings, engineered for a service life of up to 25 years and an operating range from −35 °C to 95 °C.
How thermal solutions work
1) Capture
Flat plate collectors or evacuated tubes absorb solar radiation and heat a working fluid. Soletks’ selective coatings minimize reflection and re‑radiation losses.
2) Transfer & storage
A circulation pump moves heat through a heat exchanger into an insulated tank. Smart controllers prevent freezing and stagnation, maximizing annual yield.
3) Delivery
Stored heat supplies DHW, space heating, pools, or processes. Existing boilers or heat pumps remain as backup to guarantee setpoints.
Where thermal solutions shine
Buildings
Hotels, resorts, dormitories: high, predictable DHW
Hospitals & care: sanitary hot water at stable setpoints
Multifamily & schools: boiler preheat for central systems
Sports & pools: large area for solar pool heating
Industry
Food & beverage: washing, blanching, pasteurization (40–95 °C)
Laundry & cleaning: continuous 50–80 °C demand
Agriculture & drying: low‑temperature drying, greenhouse heat
Solar cooling: absorption/adsorption chillers (80–95 °C)
Soletks product
Flat Plate Collectors (Engineering Series)
High‑transmittance tempered glass, laser‑welded absorber, EPDM seals
Ideal for 30–80 °C DHW preheat and radiant heating
Header/harp hydraulics for series/parallel fields; pressure‑rated operation
PVT Hybrid Panels
Co‑generate electricity and low‑temperature heat on the same footprint
Improved PV efficiency via back‑side heat extraction
Best for sites needing both power and hot water (hotels, gyms, industry)
Complete Solar Water Heating Systems
Pre‑engineered kits: collectors, pump stations, heat exchangers, controls
Options: pool heating packages, industrial preheat skids, drainback or glycol
Operating range: −35 °C to 95 °C; hail‑ and frost‑resistant design
Benefits for your project
High efficiency: direct heat, minimal conversion losses
Lower OPEX: free solar energy; simple, predictable maintenance
Resilience: hot water availability even during grid events (with UPS for controls)
Scalability: modular fields from small rooftops to multi‑MW thermal plants
Decarbonization: immediate CO₂ reductions for heat‑dominated loads
“For hot‑water‑dominant facilities, Soletks Solar systems often deliver the fastest payback on decarbonization.”
Integrating with PVT and heat pumps
Thermal solutions complement electricity‑focused renewables. PVT hybrids maximize energy yield per square meter, while solar thermal preheats water to reduce the electrical load of heat pumps or boilers. The result is a balanced system with better CAPEX utilization and shorter payback.
Design & performance essentials
Right‑size storage: 50–100 L per m² of collector for DHW preheat
Hydraulics: balanced flows, air removal, sensor placement for usable energy
Controls: differential thermostats minimize pump runtime & stagnation
Freeze/overheat: glycol or drainback; correctly sized expansion vessels
Monitoring: thermal kWh meters and temperature logging for transparency
Project checklist
Confirm hourly hot‑water profile (flow & temperature)
Survey roof/ground area (orientation, tilt, shading, structure)
Select collector type & storage; validate hydraulic scheme
Plan controls, safety, frost & stagnation protection
Estimate solar fraction, savings, and payback; pilot if needed
FAQs
How much area do I need?
Hotels often start with 0.8–1.2 m² of flat‑plate collector per occupied room for DHW preheat, adjusted by climate and occupancy.
What temperatures are realistic?
Flat plates: 30–80 °C efficiently; evacuated tubes: up to ~95 °C. For >120 °C, consider concentrating collectors.
Can Soletks integrate with my current boiler?
Yes. Use a preheat tank upstream. Your boiler or heat pump only tops up when solar cannot meet the setpoint.
