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DEEN
Schematic cross-section of a coated functional heating surface with opposing contact areas
PURE PARTS – Heat as the active functional world

PURE PARTS TECHNOLOGY PLATFORM

PURE LIQUID HEAT

An electric functional layer for integrated heating systems.

Heating becomes a surface function — integrated into defined panels, products and design objects instead of added as a separate heater.

THE PROBLEM

WHY INTEGRATED SURFACE HEAT?

Conventional heating technology is often added to a space or product as separate hardware. PURE LIQUID HEAT explores another route: integrating the heating function directly into defined surfaces and components.

LESS VISIBLE HARDWARE

Heating functionality can be integrated into panels, furniture and objects instead of added as a separate visible heater.

SURFACE-BASED HEAT

Heat is generated across a functional surface rather than only at a point-shaped heating element.

FLEXIBLE INTEGRATION

Thin functional layers allow heating concepts to follow product and design geometry more closely.

ZONED CONTROL

Defined heating zones can be controlled individually according to the application.

THE PRINCIPLE

HOW DOES PURE LIQUID HEAT WORK?

01ELECTRICAL ENERGY
02CONDUCTIVE FUNCTIONAL COATING
03ELECTRICAL RESISTANCE HEATING
04SURFACE HEAT
05CONTROLLED THERMAL OUTPUT
CONTACT A
HOMOGENEOUS ACTIVE FUNCTIONAL LAYER
CONTACT B

PURE LIQUID HEAT uses a conductive functional coating. Electrical current flows through the defined conductive layer and electrical resistance converts the supplied energy into heat.

Copper conductors, coating resistance, geometry and system control determine the thermal behaviour of the finished heating module.

The result is a thin, electrically activated heating surface that can be integrated into defined products and components.

SYSTEM ARCHITECTURE

FROM COATING TO HEATING SYSTEM

The functional coating is only one part of the complete system.

01

SUBSTRATE

GFB / GFK / Vermiculite

02

LIQUID HEAT FUNCTIONAL COATING

Direct application to the defined substrate. No primer layer.

03

CONTACTING + CONTROL + SAFETY

Electrical contacting, temperature sensing, thermal protection and system control.

04

OPTIONAL PROTECTIVE LAYER

Only where required by moisture, outdoor exposure, cleaning or mechanical load.

PHYSICAL DEVELOPMENT

FROM FUNCTIONAL LAYER TO PHYSICAL MODULE

Internal development images show early Liquid Heat modules, panel formats and design integrations. They document physical development work but do not represent released series products or independent certification.

THE DESIGN LOGIC

HEAT AS A FUNCTION OF THE SURFACE

LOW THERMAL MASS

The thin functional heating layer can react quickly compared with systems that first have to heat large masses.

DESIGN INTEGRATION

Heating functionality can disappear into panels, furniture and technical products.

FLAT HEAT DISTRIBUTION

The active layer enables surface-based heat generation across a defined module.

CONTROLLABLE ZONES

Temperature sensors, control electronics and separate zones can adapt heat delivery to the application.

The value is not a new law of physics. It is a different way of designing where and how electrical heat is delivered.

APPLICATION WORLDS

WHERE CAN SURFACE HEAT BECOME USEFUL?

Illustrative application concept. Outdoor suitability, protective build-up and electrical configuration are defined for the specific system.

OUTDOOR & HOSPITALITY

Integrated heating concepts for terraces, hotels, gastronomy and premium outdoor environments, placing warmth close to the user while reducing visible heating hardware.

  • pyramid heating concepts
  • HotCube concepts
  • heated lounge modules
  • heated seating
  • table-integrated heating concepts
CONCEPTS / DEVELOPMENT
Internal PURE LIQUID HEAT design panel as interior and design studyINTERNAL PROTOTYPE
Design integration study.

INTERIOR & DESIGN

Wall, panel and furniture concepts can combine design surfaces with integrated electrical heat.

  • wall panels
  • furniture modules
  • decorative heating surfaces
  • defined comfort zones
Internal PURE LIQUID HEAT prototype panel for module integrationINTERNAL PROTOTYPE
Freestanding panel format.

OEM INTEGRATION

PURE LIQUID HEAT can be developed as a functional heating module within a defined OEM product architecture.

  • product panels
  • enclosures
  • furniture
  • technical modules
  • custom heating surfaces

Every OEM application requires its own defined substrate, contacting, electrical architecture, thermal limits and validation programme.

FROST & TECHNICAL HEATING

Surface heating can also be developed for anti-condensation, frost protection and controlled temperature maintenance in technical components.

  • electronics enclosures
  • sensor boxes
  • technical containers
  • defined temperature-maintenance modules
DEVELOPMENT CONCEPT

HEATED SEATING

Instead of heating an entire outdoor area, heating functionality can be integrated close to the user — for hospitality, public spaces and premium winter environments.

PURE LIQUID HEAT heated seating development conceptDEVELOPMENT CONCEPT
Heated seating system concept. Embedded specifications are not released product data.
DEVELOPMENT CONCEPT

PUREHEAT PRISM

A current development concept explores how PURE LIQUID HEAT can be integrated into the base of hospitality and terrace tables, moving the heat source close to the user while preserving a clean furniture design.

Concept design — geometry, output, surface temperature, safety and certification remain subject to engineering and testing.

PUREHEAT Prism table-integrated heating development conceptDEVELOPMENT CONCEPT
PUREHEAT FACET PURE LIQUID HEAT development conceptDEVELOPMENT CONCEPT

PUREHEAT FACET

PUREHEAT PETAL PURE LIQUID HEAT development conceptDEVELOPMENT CONCEPT

PUREHEAT PETAL

OUTDOOR DEMONSTRATOR

From demonstrator to series-ready outdoor product

PURE LIQUID HEAT is being integrated into a complete outdoor heating device. The development architecture is defined; external type testing, conformity assessment and series release are still pending.

D · development status
PURE LIQUID HEAT pyramid outdoor heater development demonstratorDEVELOPMENT CONCEPT
Development concept for integrating four functional heating surfaces into a complete outdoor device. Not a released series product.

Planned series architecture

  • 230 V AC mains connection
  • 4 × 30 V DC power supplies
  • 400 W each
  • up to approximately 1,600 W electrical heating output
  • 4 PURE LIQUID HEAT heating surfaces
  • temperature control with sensors
  • independent overtemperature cut-off
  • LED lighting
  • weather-protected technical base
  • castors or base

Development and planning values. Not released series specifications.

Intended outdoor applications

  • terraces
  • beer gardens
  • hospitality
  • publicly accessible outdoor areas

Intended for these application areas and subject to the planned safety and conformity assessment.

Target for final device qualification: at least IP44, subject to testing of the complete series-identical product.

Path to series release

1 · Product definition

Define intended outdoor use, output and variants.

2 · Series configuration

Freeze power supplies, heating surfaces, control, sensors, safety, LED, enclosure and mechanics.

3 · Test plan

Bindingly define applicable EU legislation, standards and test methods with a suitable accredited testing institute.

4 · Type testing of complete device

Electrical, thermal, mechanical, IP, EMC, EMF, RoHS and endurance testing on the series-identical device.

5 · Technical file and release

EU Declaration of Conformity, CE marking, series end-of-line testing, traceability and change management.

The steps shown describe the intended validation pathway. They do not constitute certification that has already been completed.

Planned test programme

D · development status· planned test programme

Electrical safety

  • insulation
  • protective conductor
  • dielectric strength
  • protection against contact

Thermal behaviour and fault conditions

  • heating
  • sensor fault
  • controller failure
  • blocked openings
  • overtemperature cut-off

Mechanics

  • stability
  • castors
  • impact
  • cable routing

Environment / IP

  • water
  • foreign objects
  • drainage
  • complete device

EMC / mains / EMF

  • emissions
  • immunity
  • harmonics
  • flicker
  • electromagnetic fields

Endurance and series quality

  • temperature stability
  • resistance
  • contacting
  • protective shutdown
  • end-of-line testing

Controlled heating layer instead of an arbitrary coating

In the complete end device, PURE LIQUID HEAT is treated as a functionally and safety-relevant component. Layer thickness, resistance range, contacting geometry, conductor spacing, substrate, drying and repair limits must be defined and controlled for the series configuration.

Changes to formulation, application, contacting or safety-critical components are subject to documented change management.

Market-access boundary

External type testing and CE conformity assessment with a German accredited testing institute are planned. CE conformity assessment, IP44 device qualification and third-party certification have not yet been completed.

Series release only after completion of the required test programme, closure of safety-relevant findings, completion of the technical file and signature of the EU Declaration of Conformity.

EVIDENCE

WHAT DO WE KNOW TODAY?

B · internally documentedINTERNAL FIELD REFERENCE

GFB panel · Portugal · winter-season operation

An internally documented GFB panel was used continuously as a heating element during a winter season in Portugal. According to the available internal observations, the approximately 90 °C surface temperature and electrical power draw remained stable during the observed operating period.

WHAT THIS MEANS

The observation provides useful practical evidence of stable operation in this specific configuration.

WHAT IT DOES NOT MEAN

It is not yet an independent long-term certification or a transferable lifetime guarantee for every PURE LIQUID HEAT system.

EVIDENCE PHILOSOPHY

VALIDATION IN PROGRESS

Defined engineering questions are part of developing a reliable heating system.

LONG-TERM STABILITY

Extended operating hours and thermal cycling.

ELECTRICAL SAFETY

Complete system testing including contacts, control and fault conditions.

MOISTURE & OUTDOOR EXPOSURE

Protective layers, electrical isolation and application-specific environmental testing.

SERIES REPRODUCIBILITY

Defined coating resistance, contacting, process control and quality assurance.

SYSTEM PERFORMANCE

Voltage, current, power density, surface temperature and warm-up behaviour must be specified for each defined system configuration.

TRANSPARENT SCOPE

CAPABILITIES — AND CLEAR BOUNDARIES

WHAT THE TECHNOLOGY ENABLES

  • integrated electric surface heating
  • thin functional heating layers
  • individually controlled heating zones
  • application-dependent low-voltage architectures
  • integration into defined panels and products
  • design-oriented heating concepts

WHAT WE DO NOT CLAIM

  • no efficiency above 100%
  • no universal percentage energy saving
  • no universal substrate compatibility
  • no generic CE certification for the coating alone
  • no generic IP rating for all systems
  • no transfer of one prototype value to every application
  • no universal replacement for every building heating system
SAFETY & MARKET ACCESS

THE COMPLETE SYSTEM MATTERS

SUBSTRATEHEATING LAYERCONTACTSCONTROLPROTECTIONAPPLICATION

Electrical and regulatory assessment applies to the complete end system, not to the coating in isolation.

Depending on the final product and market, electrical safety, EMC, temperature limitation, environmental protection, fire behaviour and other requirements may need to be evaluated.

WORK WITH PURE

DEVELOP THE NEXT HEATING APPLICATION WITH PURE

PILOT PROJECT

Develop and measure a defined Liquid Heat demonstrator under controlled operating conditions.

OEM INTEGRATION

Integrate the functional heating layer into a product or component with a defined engineering and QA specification.

TESTING & VALIDATION

Work with PURE on electrical, thermal, environmental and long-term validation of a defined system.