FINTERM copper radiators

The basic idea of integrated series of FINTERM copper radiators is rich three-dimensional workability, which, by its design and technical fulfilment, opens to designers and architects unusual possibilities of installation. The radiator turns into efficient and at the same time aesthetical component of interior according to architects requirements.

FINTERM radiators are made up of copper tubes 15x1 mm, that are firmly connected by area soldered joint with 0,4 mm size copper lamellae and standard profiled front panel into consequent complex. All radiators are fitted with air bleed valves. Unilateral, bilateral, down or down combined attachment by G1/2 joining – internal thread – make possible easy fitting and wide application. Sides of radiators are covered by 1mm metal plate and upper ventilation cover is formed by air grating.

Copper is a semi noble metal and in electrochemical series is under platinum, gold and silver. In this consequence, it is very corrosion resistant. We can also indicate copper as a so called bactericidal material, that means that it has destructive effect against bacteria that are often found in systems made of other materials and are never found in cooper systems. Copper is natural and recyclable material it is safe and non-aging. It has high strength that enables to use a pipe with a smaller inner diameter with a smaller weight for one meter of length. Jointing of copper pipes is easy and reliable.

Used copper pipes are made by modern technology of phosphoric, deoxygenated, oxygen free copper. Inner pipe’s surface is smooth, without fat and carbon.

Oxygen in water actuating on inner pipe’s surface creates thin, even coating, consisting of alkaline carbonate compound. This way created coating of patina protect surface against harmful effects of running water. Therefore, the surface corrosion on the side of water we rate as positive. We also have to think of the corrosive influences on the external side of the pipe. The rate of copper pipes corrosion is by digit place lower compare with steel. The focus of the surface finish is to ensure anticorrosive resistance and subsequently secure the first-rate finish according to the customer’s requirements. These common requirements are fully answered by described radiators.

The radiator is finished by polyester powdery paint in spray booth in electrostatic field. The final set up is formed by epoxy-polyester powdery paint in various shades of the RAL colours and secure long lasting corrosion resistance and hygienic unexceptionability. No less interesting complement is surface finish of polished copper with clear varnish, when the copper coloured radiator can becomingly complement for example the wood lined interior. This design reduces the heat output because of the radiation component suppression. While the RAL coloured radiators emissivity is about 0.65 the polished copper has the emissivity only 0.04.

The heat inertia is the basis for the evaluation of the thermo-technical dynamics behaviour of the body. Mostly the heat inertia is expressed only by time τ. It is also possible to express it by the proportion of the heat output and the time τ.

         [s]

where W is the absorbing capacity for heat of the body filling given by formula:

                             [J/K]

m_w  weight of water in the body [kg]

m_T  weight of the body [kg]

c_w  water specific thermal capacity [J/kg.K]

c_T  body material specific thermal capacity [J/kg.K]

 mass rate of flow through the body [kg/s]

k  coefficient of heat passage [W/m².K]

S_L  external exchanging surface [m²]

t_wm  mean water temperature value [°C]

t_τ  temperature of surroundings at τ time [°C]

t₀  temperature of surroundings at zero time [°C]

Thermal inertia of the radiator with regard to heated space is determinated mainly by:

- body thermal capacity (it is copper here)

- heat carrier mass rate of flow

- intensity of heat passage from inside of the body to heated space

- thermal conditions of system and space

Inertia of reaction time T [min] represents time needed for reaching rated heat delivery when water with rated entering temperature and rated flow is feeded into in rated space temperature.

This value is important for radiator’s time response detection after regulating interference. Inertia of reaction time T90 when 90% heat delivery is reached and T63 with 63% heat delivery serves as a comparative criterion. There is notable difference between radiators with low water capacity as FINTERM and high water capacity as sectional ones. FINTERM radiators fully meet the requirements of flexible heat source as regards fast answer after regulating interference.

Maximum working temperature is 120°C. Radiators have thanks to their construction also high-pressure resistance with maximum operational overpressure 1 MPa. FINTERM radiator series has considerable design and proportional flexibility. Length: 300, 400, 500, 600, 700, 800, 900, 1 000, 1 100, 1 200, 1 400, 1 600, 1 800, 2 000, 2 300, 2 600 and 3 000mm. Height: 300, 450, 500, 600 and 900 mm. Depth: 85, 125, 175, 225, 275mm and next by 50mm after order. With FINTERM radiators heat delivery depending on selected dimension varies from 186 W for F30A-300x300 type to 9 125 W for F60E-600x3 000 when heat gradient is 75/65/20°C. Thermal exponent n gain value from1.281 for A type – double-row design, 1.285 for B type – three-row design to 1.294 for C type – four row design.

Except expressive flexible design FINTERM radiators have also profitable material structure. Material with high coefficient of heat conductivity is used. That enables obtain high heat delivery if you like heat module of radiator with small water content in body and fast response of the body after regulating interference. Radiator’s water chambers are made of copper pipes thereby there are no problems with exact watching of water chemical compound as it is necessary with aluminium composition radiators and effects of water oxygen diffuse saturation (intensive corrosion of steel components of heating systems) when unfitting plastic piping is used. There are no changes of materials

markedly affecting each other in copper or plastic heating systems.

Hating water demands are standard as for copper piping.

Advantages of FINTERM heating system can be briefly sum up as follows: fancy and professional design, high quality of shape and surface adjustment, flexibility, proper materials, high thermal module, small water capacity.

Constructional quality

Construction:

Copper pipe 15 x1 mm

Copper plate size 0.55 mm

Copper plate size 0.4 mm

Bushing – internal thread G 1/2 (bespoke G 3/8, G 3/4)

Design possibilities

Beside "ordinary" shapes of radiators, we offer possibility of unusual and special designs according to the space disposition. It is possible to make FINTERM radiators bespoke with angle of pull 45° and 90°.

Standard surface treatment is white tint RAL 9003, but it is also possible to use other tones of RAL palette.

Cranked radiator FINTERM „ZZ”

Cranked radiator FINTERM „U”