      
THE RESARO
ENERGY SYSTEM
Heating and ventilation with air circulation
Under floor heating (SOFT HEAT)
INFORMATION
This information concerns: Small houses and villas with RESARO
elements placed directly on ground, Installation elements
This publication holds the following headings
Some technical facts
Suspended structural floor element with opportunity for installations
Flooring materials
Flooring in upper floor
Living during cold winters
Tests
Reference objects
The Resaro system heating system
Cleaning of ventilation supply air with Dynamic fresh air intake
Cleaning of circulation supply air
Electrical installations
Electrical installations on the top floor
The house in the future
New technical developments
At the bottom of the page
Text appendixes
Some technical facts!
The RESARO SYSTEM is a construction design aimed at 1-storey,
1 1/2-storey or 2-storey houses.
The RESARO ELEMENT can also be applied on its own, as a foundation
system, to houses built in various materials such as wood, brick
and concrete. Using the all concrete RESARO ELEMENT in the bottom
floor.
When the exterior walls are dressed with timber paneling the
space between these two surfaces is used to preheat supply air
and thus complementing the heat from the solar heat collectors.
A complement to solar collectors. The space under the roofing
will always be used.
When the RESARO ELEMENT is used in floor construction, then circulated
air will pass freely under all floor space. This means that the
floor can be evenly heated by the warmed air from the solar heat
collectors.
Combining the ventilation air with the heating air system ensures
an efficient ventilation system.
A moisture proof construction is used for the basement with warm
ventilated basement and ground insulation as well as radon tight
with a barrier of gas tight welded plastic sheeting
The basement is constructed moisture safe with warm ventilated
basement and ground insulation as well as radon tight with a
sealing barrier of gas tight welded plastic sheeting. !
An optional system with RESARO floor structure, for both bottom
and intermediate floors, is available, facilitating under floor
heating also to the intermediate floor.
The structural top floor can also be used for air conditioning,
viz. Cooled air can cool primarily the top floor and there after
the rest of the house.
The house can also be provided with exterior walls constructed
in concrete with exterior thermal insulation. And with optional
facing or surface coating.
Intermediate structural floor with space for installation.
Tests performed at the Royal Institute of Technology in Stockholm
indicate that the overall concrete elements can be used for spans
up to 8 m, even longer in heavier construction. The floor is
firmer than a timber floor.
- The design of the structural floor units
simplifies installation and thus results in a lower price.
- All installations are entirely accessible
for inspection and maintenance as well as additions in the future.
Flooring materials
Today there are many economically acceptable alternatives for
flooring available and we can choose between both synthetic and
natural materials which can be installed on a cleavage layer
of cork backed underlay felt or similar material.
These materials give us comfortable floors.
Also a rustic flooring can be used.
The climate for natural wood in the flooring is much better at
low temperature system as the Resaro system than with common
hot pipe floor heating systems.
Intermediate floor structure:
The intermediate floor can optionally be constructed with an
all concrete floor structural which is somewhat more expensive
than a conventional floor. The elements are turned in the intermediate
floor so that the concrete slab will face downwards and thus
constitute the ceiling.
The floor, which may consist of optional material, in the case
of an overall concrete floor, will be laid as a floating floor
on sound attenuating rubber strips on the structural floor beams.
The elements can also be turned with the slab facing upwards
and with a ceiling of gypsum plasterboard, for example.
- These arrangements provide an improved indoor
sound climate between the floors when compared with conventional
villas.
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Living during cold winters
We are sure you will remember the extremely cold winter of 1986.
(In Sweden)
The winter of 1994 and 1996 also afforded surprisingly cold spells.
By using the RESARO heating and ventilating system you obtain:
- a comfortable floor which warmer gets the
colder it is outside, producing even temperatures over the entire
area.
without....
- hot zones because of the intensive heat from
the piping in a water borne under floor heating system (usually
28 oC to 45 oC )
- exposed water piping that may freeze during
long term power failures,
- risk of water leaks,
- risk of oxygen infiltration through the walls
of plastic tubing into the recirculating water system, (oxygen
causes corrosion in the boiler)
- trouble making thermostatic valves for temperature
control.
Tests:
The building elements have been type tested at the Royal Institute
of Technology in Stockholm in the Department of Steel Construction
under the guidance of Professor Torsten Höglund
Reference objects:
Four semi-detached hillside houses (eight dwellings) are erected
in Bollstanas, Upplands Vasby, Stockholm with RESARO elements
in both floors and RESARO wall elements i ground floor.
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THE RESARO SYSTEM heating system
New comfort everywhere in the house.
Filtered indoor air mixed with fresh air for ventilation transfers
into the structural floor under the floor slab.
- The ventilating air distributes efficient
to every part of the house.
- The house is heated by the under floor heating
as well as heating by the circulating air moving through the
dwelling.
- The air will enter soundlessly along the
exterior walls and circulate without any draught.
- Air circulation gives an even temperature
and ventilates everywhere in the dwelling.
- Keeps the subsoil dry at the same time as
the house is heated from below.
- The heating is allowed to spread in the natural
way by means of natural air movement. This is one of the great
advantages of our systems.
Noise caused by air
(hissing sound) from a fan is very easy to remedy. This is accomplished
with simple duct silencer. These are always included in our installations.
To keep the sound level down the support duct is always spacious
in order to lower the air speed.
THE RESARO SYSTEM with Dynamic air intake
You may perhaps select the ventilation system with dynamic air
intake through the roof insulation. This may consist of mineral
wool or cellulose fibers. Air is sucked through the insulation
by the vacuum created by the exhaust fan.
During the cold season, when it passes the roof insulation, the
outdoor supply air is preheated by the heat transmitted outwards
through the fibers of the insulation. Thus heat is recovered
instead of lost to the outside air through the roof.
During the summer it is possible to collect outdoor air through
a duct from the northern side, unless we do not want to open
the windows and thus end the vacuum in the house.
- This design gives your house outstanding
thermal insulation properties despite a quite common thickness
of the insulation.
- In combination with the RESARO SYSTEM, which
provides under floor heating and exhaust air ventilated foundations,
no heat recovery unit is needed,
- which results in even lower construction
costs, to your benefit
- Under floor heating and thus a decreased
room temperature will give you even lower housing costs.
Cleaning of ventilation air at dynamic
air intake
The roof insulation is used as a gigantic filter and cleans the
air sucked threw it. The insulation may consist of fibers and
functions as a filter for all particles and need never be replaced
- Its capacity lasts for over 200 years ahead and lasts the entire
life span of the house. Tests at among others in the Dept. of
Building Physics. Lund University proves that.
The fresh ventilation supply air distributes to the entire house.
Cleaning of ventilation air
Filtering will take place in several stages.
A common double pre-filter for the entire house. The filter consists
of two parts which facilitates cleaning and replacement.
- A roughing filter that is washable, can be
rinsed in the shower. This costs no money. Saves the fine filters.
En filter guard indicates when it is time.
- And a fine filter of high capacity, replacement
once a year or every second year depending of the fineness of
the filter desired.
- Several houses in Sweden furnished with dynamic
air intake is occupied by allergic persons.
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Electrical installations:
Electrical wiring and distribution boards are installed inside
the structural Resaro elements.
Cooker, oven, freezer, refrigerator, washing machine, hot water
heater, immersed heater, etc. are provided with cables with a
new type of plug according to a system that ENSTO OY has developed.
- These units are connected directly to the
electrical distribution board by letting the cable down into
the elements through an opening behind the skirtings at outer
walls. Suspended by threading it through the web of the elements
and connected to sockets in the distribution board. The electrician
does not need to fasten any flexible cords by means of screws.
- Sockets for table lamps etc. are suspended
in the skirtings and are easy to move.
- Simple to complete with new sockets when
new when necessary. Fixed sockets have a tendency to be placed
in the wrong place.
- With dismounting flooring as for example
the Alloc flooring it is easy to lift up the floor boarding along
the walls if better accessibility is desired. For large engagement,
water damage, rebuilding for new house owners etc., the entire
flooring will be lifted off.
Electrical installations on the top floor
Electrical wiring for the top floor as well as ceiling lights
for the ground floor are installed in the intermediate floor
if this is constructed of concrete elements without need for
cutting of holes to get past any beams.
- Dismounting flooring enables accessibility
in the future even in this part of the house.
If RESARO elements are not used, wiring for
the top floor will be installed in a conventional way.
The house in the future
A house must be operable for several generations. Supplementary
purchases of appliances are usually necessary after 10 or 15
years.
- Should not a house planning concept be such
that it will not prove to expensive to change appliances in the
building?
- Should this not be easy to perform, for example
with plug-in connections for power, water and sewage discharge.
- For repairs to traditional houses more than
50 years old, it is today cheaper to demolish than reconstruct
due to the fact that everything is so inaccessible.
- With the new thinking of today regarding
recovery and recycling it is natural to develop a system that
tasks consideration to the above.
New technical developments
But even new technology is continually being developed.
The house is easy to modify and complete in that case other new
components are concerned,
Who knows today what we might want to install in ten years time.
If you chose the RESARO SYSTEM it is much more probable that
it will be possible to carry out changes to your house because
of the excellent accessibility.
- The trade-in value of your house is increased.
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TEXT APPENDIX
Short information about the "Dynamic fresh air intake"
to THE RESARO SYSTEM PAGE
to THE RESARO TECHNOLOGY PAGE
to THE RESARO HOME PAGE
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