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Home / Solar Collectors / Flat Plate Solar Collector

Flat Plate Solar Collector front view
Frame and connection detail showing casing depth and side profile
Absorber cutaway showing glazing, flow channels, and insulation
Collector array installed on a project roof
Technical dimensions drawing showing connection positions
01 / 05

Flat Plate Solar Collector

A modular solar thermal collector engineered to transfer sunlight into usable heat through a selectively coated absorber and liquid flow circuit. Built for pressurized domestic, commercial and project-scale hot-water systems.

2.0–3.0 m²* Cu/Al or Full Copper* Water / Glycol Circuit OEM Available
Request Collector Configuration →

Collector-only product: storage tank, pump station, controller, expansion vessel and mounting accessories are configured separately. *Market-reference options; final CASSKY data require model confirmation.

Collector panel, not a complete heater

This page is for the glazed heat-collection panel that connects to an external hydraulic circuit. It should be specified by area, absorber construction, flow layout, pressure class and tested performance—not by storage-tank litres.

THIS PRODUCT

Flat Plate Solar Collector

Supplied item Glazed collector panel with internal liquid circuit
Selection basis Gross/aperture area, absorber, pressure, connections and efficiency data
System role Captures heat and transfers it to water or heat-transfer fluid
DIFFERENT PRODUCT

Flat Plate Solar Water Heater

Supplied item Collector plus storage tank and support frame
Selection basis Tank capacity, household demand and complete-system pressure
Typical layout Compact roof-mounted thermosiphon package
ALTERNATIVE TECHNOLOGY

Evacuated Tube Collector

Absorber format Individual vacuum tubes rather than one glazed flat panel
Service approach Tube-level replacement may be possible
Selection note Compare climate, operating temperature and maintenance strategy
Send the system design conditions—not only the panel quantity. Required: location, load profile, target water temperature, circuit type, roof layout and applicable certification.

One sealed panel. Five thermal layers.

Flat plate solar collector cutaway
01

Solar glazing

Tempered low-iron textured glass is a common option for transmitting sunlight while protecting the internal assembly.

02

Selective absorber

A coated metal sheet absorbs solar radiation and limits radiative heat loss. Copper/aluminium or full-copper structures can be evaluated.

03

Hydraulic circuit

Headers and risers carry water or glycol solution. Tube material, layout, connection standard and pressure rating are model-specific.

04

Insulation & casing

Back/edge insulation and an aluminium enclosure reduce thermal loss and protect the collector in outdoor service.

*Illustrative construction options only. Replace the reserved visual with an approved exploded view, then align every material statement with the selected CASSKY model.

From sunlight to stored heat

The collector is one heat-generating component inside a designed solar loop. Pumps, controls and freeze/overheat protection depend on the complete hydraulic scheme.

STEP 01
☀

Solar transmission

Radiation passes through the glazing and reaches the coated absorber surface.

STEP 02
↧

Heat absorption

The absorber converts incoming solar energy into heat across the metal sheet.

STEP 03
≈

Fluid transfer

Heat passes into water or glycol solution circulating through headers and risers.

STEP 04
□

Tank charging

The solar circuit delivers heat to an external storage tank, directly or through a heat exchanger.

Direct circuit System water may pass through the collector where water quality, pressure and freeze conditions permit.
Indirect glycol circuit A closed solar loop transfers heat through a coil or external exchanger for freeze protection and hydraulic separation.

Technical specification scope

Request Confirmed Datasheet
Collector type Glazed liquid flat plate
Reference gross area 2.0 / 2.5 / 3.0 m²*
Reference dimensions 2000 × 1000–1500 × 80 mm*
Casing Aluminium alloy option*
Glazing Low-iron tempered glass*
Heat-transfer medium Water / antifreeze solution*
Absorber structure Cu/Al or full copper*
Surface Selective coating option*
Reference absorptance ≥ 0.93*
Reference emittance ≤ 0.15*
Bonding method Model-dependent
Insulation Material / thickness to confirm
Flow pattern Header & riser*
Reference header 22 mm*
Reference risers 10 mm class*
Connections 22 mm / 3/4 in option*
Rated working pressure 0.6 MPa class*
Maximum pressure Exact model only
Optical efficiency η₀ Test report required
Heat-loss coefficients a₁ / a₂ required
Aperture area Model-specific
Stagnation temperature Test report required
Pressure drop Flow-rate dependent
Test standard ISO 9806 / applicable scheme*
Reference inclination 15°–75°*
Orientation Portrait / landscape by model
Mounting Pitched / flat roof option
Array connection Project-engineered
Wind / snow load Site-specific verification
Certification Exact model and market only
*These are competitor-derived market references, not confirmed CASSKY claims. Replace them with approved model data before publishing. Tested efficiency must always identify the reference area, test standard and exact collector model.

Configured for the system. Prepared for your market.

Flat plate solar collectors for villas and multifamily housing
01 / DOMESTIC HOT WATER

Villas & multifamily housing

Collector arrays paired with central or individual storage for pressurized hot-water production.

Flat plate solar collector system for hotels and resorts
02 / HOSPITALITY

Hotels & resorts

Roof-mounted solar fields designed around occupancy, peak draw and backup heating strategy.

Flat plate solar collectors for schools and commercial facilities
03 / COMMERCIAL

Schools & facilities

Modular collectors for shower blocks, kitchens and service-water loads.

Flat plate solar collector system for industrial process heat
04 / PROCESS HEAT

Low-temperature industrial demand

Preheating for washing, cleaning or other processes after load and temperature-profile review.

Flexible customization. Flexible production scheduling.

MODEL CONFIGURATION Area, absorber, casing and connections*
BRAND PACKAGE Logo, label, carton and manual*
ORDER PLANNING Mixed models and staged shipment by agreement*

Partner With Cassky for Reliable Clean Energy Solutions

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.

1. Distributors & Dealers Build long-term partnerships with reliable heat pump and solar energy products, competitive supply capability, and professional support.
2. Engineering Companies & Contractors Get technical assistance, project solutions, and product recommendations for residential and commercial energy projects.
3. OEM / Brand Partners Access customized manufacturing, private label solutions, and flexible cooperation options for your market.

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