Radiant Heaters for ceiling mounting

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Radiant Heaters for ceiling mounting
ECOSUN Radiant heaters
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Radiant Cassettes
Applications
Standard models of radiant heaters
Advantages
Theory
Specifications
Installation
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ECOSUN Ranges

• Radiant panels are manufactured in two basic
  designs
• High-temperature panels ECOSUN S
• - are equipped with flat radiation surface
  which guarantees radiation from up to 180 angle
  ( so called hemispheric radiation ). Temperature
  at the surface of radiating segment is approx.
  350C. This high temperature enables relatively
  high density of radiant flow. That is why these
  panels are designed for suspending in high places
  5-8 m.Plane surface emitter is designed to
  provide environment heating

2) Low-temperature panels ECOSUN - have
also flat radiating area. Contrary to high-level
panels is the surface of radiating area max.
110C. Density of radiant flow is lower.
Recommended height of panels placement is 2,5-3,8
m.
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Radiant Cassettes Applications

• The radiant cassette is designed to provide
  environment heatingronment heating
• The radiant cassette is used for total, or
  additional heating in thermal insulated buildings
  
• Multiple-purpose buildings
• buildings which are not continuously occupied
• with ceiling heights from 2,5 to 8,0 meters
• Applications
• public offices and administrative offices,
  company seats, schools
• cultural facilities, show-rooms
• medical arrangements
• commercial and sales centres
• manufacturing halls and warehousessuch as
  shops, industrial premises, gymnasiums,
  exhibition halls, etc.

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Plane surface emitter
emitter

• Hemispheric radiation (Radiant cassette)

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Radiant Cassette
Environment comfort heating by ECOSUN
Convection discomfort heating system
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Radiant Cassettes Advantages

• the surface of the radiant panel radiates a flow
  whose spectrum lies mostly in the band of
  wavelengths greater than 5 micrometers, and is
  thus absorbed to a large degree by the human
  body people are thus heated in a manner similar
  to objects.
• when the radiant flow heats objects up to a level
  of 20-22C, heat comfort can be achieved even
  with air temperatures of 18-19C, and this leads
  to energy savings of at least 18-24.
• radiant panels make temperature distribution in a
  room vastly more vertically balanced only a -1
  to -2 degree difference between the floor and the
  ceiling (for convection heating, meanwhile, the
  difference is given as 1C per mere 30-50 cm of
  height).
• there is less flow (whirling) of air in the
  heated space, so dust particles also whirl less,
  thus reducing the risk for a number of
  illnessesasthma, mucous membrane infection, etc.
  
• a higher wall temperature means a lower
  possibility for surface condensation room
  humidity is not lowered.

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Radiant Cassettes Advantages

• glass is not transparent (we might say
  transthermant) when it comes to radiation with
  wavelengths over 3 and thus the radiant flow is
  not lost through windowpanes.
• the panels do not need any maintenance
• sounder environment with higher air moisture does
  not lead to mucosa membrane drainage and
  respiratory diseases
• has positive effect on people affected with
  arthral diseases
• full possibility for machines, furniture etc.
  placements
• long service life
• no emission, thrifty way of dealing with life
  environment
• high thermal comfort
• Infrared radiant heating is most suitable for
  wall dehumidification in room (for example caused
  by flood)

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Cassettes solve the problem of cold spots and
isolated work areas.
Cassettes do not dry out the air ensuring a
pleasant working environment
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Isolated work areas in factories, work stations,
warehouses etc.
Hospitals, Xray tables neo-natal units, burn
units, receptions, waiting rooms etc.
Ecosun High Temperature Cassettes resolve problem
of deicing planes in cold hangar areas at the
John Lennon Airport, Liverpool.
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Radiant Cassettes Theory
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ECOSUN radiant heat cassettes work in a similar
way to the radiant heating action of the sun
gently warming the surfaces of objects and people
in the room. This is a gentle, natural
comfortable heating system that offers may
advantages over conventional convection heating
systems.
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2.5 m
2.0
1.5
1.0
0.5
0
º
º
º
º
20
22
24
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Basis of radiant heat transmission

• each object with certain temperature has some
  inner heat energy.
• Heat energy is changing into electromagnetic
  oscillation which extends through space. If there
  is no heat supplied to the object, it cools down.
  
• When electromagnetic oscillation hits other
  object, it is absorbed by its surface and changes
  into heat energy. If the heat is not taken away
  from the object, it heats up.
• Electromagnetic oscillation is not bound to outer
  environment ( medium) it can proceed even in
  absolute vacuum
• Most famous heat transmission via radiation is
  natural sun radiation heating the Earth

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HEATING RADIATION

• Transfer of heat energy from one body to another
  through the space which separates them .
• (Heating of Air is only secondary!!!)
• Using electromagnetic waves as transfer vector

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Ideal
Ecosun
Convected heat
Convected heat
Ceiling level
Ecosun
Ideal
16º
19º
23º
18º
20º
22º
19º
20º
21º
20º
20º
20º
21º
21º
19º
22º
22º
18º
16º 18º 20º 22º 24º
Floor level
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Radiant Cassettes Specifications
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Radiant Cassettes ECOSUN S specifications

• Proportion of energy radiated 70 !
• Average surface temperatures up to 350C
• 1, 2 or 3 heating units
• Unitary power 900, 1200, 1800, 2400, 3000, 3600 W
• Very high installation ( for whole area heating 5
  to 8 m, for zone heating 3,5 to 4,5 m).
• Covering IPX4

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ECOSUN S Radiant Cassettes technology

• Thermal reflecting panel (rock wool insulation)
  covered with sheet metal varnished body

• Heating element (aluminium segment with
  pressed-in heating rods)

High emissivity surfacing underside SILICATING
Technology
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Radiant Cassettes ECOSUN specifications

• Average surface temperatures
• 90 -110C
• Covering IP20, IP44, IP54, IP65
• Unitary power 100W - 700W
• high installation (2,7 to 3,8 m).

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ECOSUN Radiant Cassettes technology

• Thermal reflecting panel (rock wool insulation)
  covered with sheet steel metal body

• Heating element (a heating foil or a heating
  cable)

• THERMOQUARTZ TradeMark layer -the highest
  possible absorption of heat (of heat radiation)
  from the heating board

THERMOCRYSTAL TradeMark layer-the highest
possible efficiency of heat energy radiation
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Radiant Cassettes Installations
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How to design output, numbers and location of
radiant cassettes?

• 1. Calculate heating loss of a specific area Q(W)
• 2. Select heating mode in accordance with the
  character of a future object operation
• Systematic heating mode with good level of
  heating comfort
• heat passage coefficient to (U)
• walls lt 0.5 W/m2K, floors at terrain lt 0.5
  W/m2K,
• ceilings lt 0.35 W/m2K.
• Higher values to (U) increase operating costs
  and decrease heating comfort !

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How to design output, numbers and location of
radiant cassettes?

• 3. Total input of all heaters set up to 20
  higher than calculated heating loss because of
  higher heating system dynamics
• P 1,2 Q W
• to check the input size for area unit,
  whereas applies P/Slt150W/m2
• S ......... floor surface of an area W

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How to design output, numbers and location of
radiant cassettes?

• 4. Set minimal number of heating units n for
  creation of homogenous radiant field ngt S/H2
• H .......... expected installation height m
• The more heating units enable heating comfort
  but increases acquisition costs!!!
• 5. Calculate average input of one heating unit
  and from output line of appropriate type select
  closest face-value
• Specify number of heaters according to total
  input
• Pn P/a Pjm
• n P/Pjm

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How to design output, numbers and location of
radiant cassettes?

• 6. Propose scheme of even location of individual
  panels. It is necessary to respect frame
  distances and even distances of panels according
  to scheme figure

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How to design output, numbers and location of
radiant cassettes?

• 7. Determine installed height according to frame
  recommendation in table or through the use of
  nomogram
• Usually mounting height
• 300 W 2,7 to 3,2 m
• 600 W 3,0 to 3,8 m
• 700 W 3,0 to 3,8 m
• 900 W 1200W 4,5 to 6,5 m
• 1800 W 2400W 5,0 to 7,0 m
• 3000 W 3600W 6,0 to 8,0 m

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Minimum mounting height

• Vertical asymmetry of radiated lt 12C.
• If this temperature difference is
• between 8 and 12C, the environment is qualified
  as slightly uncomfortable,
• less than 8C, the environment is considered to
  be comfortable.

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How to design output, numbers and location of
radiant cassettes?

• In case of systematic heating mode with lower
  level of heating comfort is possible to provide
  zone heating by radiant cassettes.
• ZONE HEATING is a mean of heating when only
  exposed, relatively small areas ( case of little
  heated halls ) are heated with radiant heat.

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Application of zone heating

• heat passage coefficient of an object cover k (U)
  gt 2W / m2K
• Interrupted heating mode in objects heated for
  short-term stay of people (mainly churches,
  concert halls in historical objects etc. with
  high ceilings, social halls)
• These large area objects are very expensive to
  heat in interrupted mode with conventional
  heating devices such as storage heaters,
  convectors and various types of "radiants". These
  high operation costs are caused by the fact that
  it is necessary to heat very huge air content
  from low temperatures up to demanded temperature
  (comfort). And this all in relatively short time
  period. Because radiation heats the air only
  secondarily from radiated objects, comfort
  environment can be reached in such areas much
  faster. Therefore radiant heating is for
  interrupted mode of heating much more effective.

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Assembly

• Low temperature radiant cassettes ECOSUN
• Supply cords, 1 m long, lead out of the panels.
  The panels can be installed directly on ceilings
  using a fastening frame.
• They can also be installed in coffer ceilings (in
  grids) or by hanging on ropes or chains.
• The figure below show how the panel should be
  installed

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Assembly

• High temperature radiant cassettes ECOSUN S
• These panels can be installed directly on
  ceilings using the attachment frame (which is
  part of their installation kits)
• or by hanging them on ropes or chains.
• The panels are connected during installation
  to a terminal box placed on the side of each
  panel. These terminal boxes each have two outlets
  to enable the interconnection of cables inside
  them.
• CAUTION The SURROUNDING TEMPERATURE
  (temperature of surrounding air) near an ECOSUN
  radiant panel may not exceed 30C.

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El. supply

• The radiant heaters from 300 W to 1200 W are
  supplied in 230V
• 1800 W and 2400 W are supplied in 230/400V 2N
• 3000 W and 3600W are supplied in 230/400V 3N

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Regulation by room

• One thermostat only to control all radiant
  heaters in the same room
• There must be a suitable control system such as
• A moduling electronic ambient thermostat
• A control system device limiting their operation
  according to the exterior temperature and
  modulating interior temperatures

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The 5 conditions for a quality radiant heating

• The installed power of heating is equal to the
  thermals losses of walls and air change by the
  premises increased by 20 .
• In thermal insulated buildings
• The heaters power in accordance with the mounting
  height.
• Radiant heaters must be installed horizontally
• A homogeneous layout of radiant heater

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Effective ECOSUN S radiant cassettes applications
in practice
Prague Castle Gallery
Market hall
Production hall
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Effective ECOSUN radiant cassettes applications
in practice
Newsagents
Restaurant
Office
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Thank you for your time and interest
Contact us FENIX Trading s.r.o. Slezska
2 79001 Jesenik, Czech Rep. Tel/Fax [phone]
304/303 E-mail fenix_at_fenixgroup.cz Web
www.fenixgroup.cz