Direct-Insertion Manifold
System fluid communicates with the glass tubes and header.
- Low-pressure/open-loop orientation
- Simple collector construction
- External centralized storage
Home / Solar Collectors / Manifold-Type Solar Collector
A modular evacuated-tube collector developed for centralized solar hot-water projects. All-glass vacuum tubes connect directly to an insulated manifold, allowing solar-heated fluid to circulate between the collector array and an external storage system.
Many evacuated-tube products have a manifold. The defining feature of this page is that the all-glass tubes connect directly to the insulated header for a simple engineering collector circuit.
System fluid communicates with the glass tubes and header.
A sealed heat pipe transfers energy through its condenser into manifold fluid.
Closed-loop solar fluid travels through metal U-shaped pipes inside the tubes.
The evacuated tubes absorb solar radiation and heat the fluid inside them. Density differences and/or engineered circulation move useful heat through the common header toward external storage.
The selective coating converts incoming solar radiation into heat inside each evacuated tube.
The evacuated glass structure reduces convective heat loss to the surrounding air.
Fluid in the direct-insertion tube gains heat without a separate copper heat pipe or U-pipe.
The insulated manifold combines flow from the tube array and connects it to the system circuit.
All-glass vacuum tubes connect directly to the common header without individual metal heat pipes.
Simplified collector constructionThe selective absorber and evacuated layer support solar heat collection with reduced ambient loss.
Useful thermal captureThe header gathers heated fluid while insulation limits heat loss around the shared flow path.
Central collector connectionMultiple collector modules can be arranged for larger loads after hydraulic review.
Scalable project capacityThe collector field can be matched to a separately sized centralized storage tank.
Flexible system sizingA straightforward construction can suit projects prioritizing initial collector-field economics.
Commercial configuration optionThe final arrangement depends on whether the project uses natural circulation or pumped circulation, plus the elevation, tank design, return temperature and pipe network.
| Parameter | Preliminary Option / Reference | Confirmation Requirement |
|---|---|---|
| Collector Type | Direct-insertion manifold ETC | Do not label as heat pipe or U‑tube. |
| System Orientation | Low-pressure / open system* | Publish the exact allowable pressure and head. |
| Vacuum Tube | All-glass evacuated tube | Confirm diameter, length, coating and glass specification. |
| Common Tube Reference | Ø58 × 1800 mm* | Market reference only until Cassky approval. |
| Tube Quantity | Model-dependent engineering series | Confirm available module combinations. |
| Manifold Inner Tank | Stainless steel option | Material grade and thickness require approval. |
| Manifold Casing | Stainless / coated steel option | Confirm finish and corrosion requirement. |
| Insulation | PU foam option | Density and thickness require model data. |
| Working Fluid | Water, system-dependent | Review water quality, scaling and freeze conditions. |
| Connections | Project-specific | Confirm size, standard and array arrangement. |
| Installation | Roof / rack engineering option | Check elevation, slope, wind, snow and structure. |
| Certifications | Destination-market option | List only certificates for the exact model. |
Central storage serving scheduled bathing and accommodation demand.
Solar preheating for hospitality projects in suitable climates.
Modular collector fields for employee and site hot-water facilities.
Applications designed around compatible static head and circulation.
Discuss tube quantity, manifold materials, casing, frame, connection position, labels, manuals, packaging, pilot orders and rolling batch releases.
Common questions about direct-insertion manifold collectors for centralized solar hot-water systems.
No. Manifold describes the common header. This page covers a direct-insertion all-glass tube configuration; heat-pipe and U‑tube products use different heat-transfer structures.
No. It is a collector module designed to connect to an external centralized storage tank and circulation network.
The direct-insertion configuration is generally positioned for low-pressure or open systems. The exact allowable static head and working pressure must come from the approved model data.
Yes, subject to flow distribution, elevation, pipe sizing, return temperature and allowable module connections. Large arrays require balanced hydraulic design.
Direct water-filled glass tubes create significant freeze risk. Cold-climate use requires a specifically engineered drainage or protection strategy; suitability must not be assumed.
Because water can contact the tube and manifold directly, hardness, sediment and corrosion chemistry may affect scaling, flow and service life. Water treatment may be required.
Potential options include tube count, manifold material, casing, insulation, frame, connection arrangement, labels, manuals and packaging, subject to technical feasibility.
Provide location, climate, daily hot-water demand, external storage volume, elevation, circulation method, water quality, quantity and delivery plan.
Cassky specializes in high-performance heat pump systems and solar energy solutions, providing reliable products and customized services for global distributors, engineering companies, contractors, and brand partners.
Tell us about your product or project requirements. Our team will contact you to discuss the next step.