OHA RHE
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OHA RHE RADIANT STRIPS WITH MODULATION AND INVERTER RADIANT HEATING TECHNOLOGY AND INNOVATION TECHNICAL DESIGN OF THE SYSTEMS HEATING COOLING GREEN ENERGY

OHA RHE with inverter (Patented) THE EVOLUTION OF THE RADIANT HEATING OHA RHE “Radiant High Efficiency” WITH MODULATION AND INVERTER, represents the technological evolution of OHA combustion group. The thermal power is delivered through a continuous modulation and is controlled by a software and a microprocessor. In this way the fume fan capacity is adjusted through an inverter, according to several parameters, such as fume temperature, outdoor and indoor temperature. OHA RHE works using a fan with a partial recirculation of the fumes. This fan, controlled by the inverter, is equipped with...

MANAGEABLE HEAT AND FLEXIBILITY OF USE OHA radiant strips allow the zone heating, concentrating the heat towards the floor and only where it is necessary, in order to differentiate the temperatures among the several areas of the same environment. As a consequence there will be a lower energy consumption and a high thermal comfort. This kind of heating system does not cause air and dust movements, which is physiologically present in all the industrial plants. OHA radiant strips are suitable to heat buildings with particular shape, thanks to the ducts that can be joined and fitted to any...

INVERTER THE HEAT IS UNIFORM ALONG THE WHOLE RADIANT CIRCUIT AND THE ENVIRONMENT IS HOMOGENEOUSLY HEATED FULLY RUNNING SYSTEM WITH OHA RHE = COMPLETE MODULATION Burner 70% power capacity Power homogeneously spread out Power homogeneously spread out FULLY RUNNING SYSTEM WITH STANDARD MODULATING BURNER Burner 70% power capacity High power, heat not homogeneously spread out Low power, heat not homogeneously spread out 4

UP TO 15% GAS SAVING UP TO 30% ELECTRICAL ENERGY SAVING + COMFORT WITH OHA RHE: þ OHA RHE technology allows to uniform the heat along the whole radiant circuit, heating homogeneously the environment. þ High noiselessness of the burner (according to DIN-VDE-0530 standards) þ Possibility of remote tele-management HOMOGENEOUS HEAT = MAX PERFORMANCE HEAT NOT HOMOGENEOUSLY SPREAD OUT = LOW PERFORMANCE High heat

OHA WORKING: MAXIMUM SAFETY AND RELIABILITY In order to guarantee the highest reliability of the system, OHA combustion group has been designed to work with radiant strips kept in vacuum conditions. The product meets the safety requirements defined by the standards for the industrial buildings. OHA burner runs according to the forced-air-intake principle, based on a laminar - turbulent flow with afterburning. The system works at relatively low temperatures. Indeed, the temperature of the radiant strips is always less than 300°C. Combustion chamber in vacuum condition Combustion Fume exhaust...

OHA: SCIENCE AND TECHNOLOGY Stefan-Boltzmann law The Stefan-Boltzmann law describes the power radiated from a black body in terms of its temperature. Specifically, the Stefan-Boltzmann law states that the total energy radiated per unit surface area of a black body across all wavelengths per unit time, is directly proportional to the fourth power of the black body's thermodynamic temperature Systema has always used materials and technologies able to take advantage of all the factors which regulate the heat emission of OHA heating system. The Stefan-Boltzmann law describes the power “Q”...

PATENTED TECHNOLOGICAL SOLUTION Since the beginning Systema has worked with the academic world to share ideas and experiences which have allowed to use adequately the peculiarities of the radiant technology, optimizing the performance of each component of OHA system. Nowadays Systema produces heating systems which are certified for their quality, efficiency, performance, reliability and safety reaching the highest market levels. Indeed OHA radiant strips have obtained new licences, which have to be added to the historical patent referred to the radiant strips with recirculation (year 1990)....

The fan In order to optimize the thermal exchange, OHA uses a system patented in 1990 which exploits the fume recirculation, thanks to a fan installed inside the combustion group. This fan has been realized to guarantee a uniform distribution of the temperature and a time reduction in making the system operative. The electrical load necessary to guarantee an adequate fan capacity, has to be balanced by a high increase of the emission efficiency to ensure a high performance of the whole installation. The radiant strips in treated aluminized steel The radiant strips are composed essentially...

THE HIGHER REFLECTING CANOPY INCREASES OF 21% THE THERMAL EFFICIENCY OF THE RADIANT STRIPS ON THE GROUND 120 Efficiency with insulation and reflecting canopy Efficiency only with insulation

(*) At full power in standard conditions (**) RANGE RATED version allows the calibration of the burner at full power according with the real thermal load required by the radiant circuit. (©) The values indicated are exclusively indicative, considering that they usually change according with the real design of the system and the final use. ATTENTION: For a proper design of the heating system, please get in touch with the Technical Department of Systema S.p.A.

(*) In case of long plenum (only supplied if specifically required) the dimensions N and P are respectively 1802 and 1003 mm) (**) Oha Standard= 1075 Oha RHE= 1095 Dimensions of the Standard Radiant circuit Dimensions of the Preassembled Radiant circuit

OHA RHE and OHA: integrated functions The electronic board installed inside the burner represents the brain of the equipment. It has been designed to guarantee flexibility, a wide range of functions and configurations for a competitive and innovative product. These functions can be used profitably when the equipment is combined with Systema control panels. Common functions of OHA RHE and OHA 3 working programs: 1) Auto: thermal power according to program and timer settings, 2) Manual ON, keeps the function set with comfort program 3) Manual OFF: keeps just the anti-frozen condition (if...