NTA HotBoxes
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HotBox Test Chambers TDW 4040 and TDW 4240 With Heat Flow Meter, Guarded Hotbox or a Combination Analyzing & Testing

HotBox Test Chambers For determining the stationary heat transfer properties of complex components and finished products used in construction such as doors, windows and bricks. Our HotBox devices are in accordance with DIN EN 1934, DIN EN ISO 8990, DIN EN 1946-4, DIN EN ISO 12567, DIN EN 12412-2, and ASTM C1363. e heat ures th ding s a e m buil alue The U-v ion through a ow ind iss transm .g., wall or w part, e Our HotBox is a constructively complex test apparatus for determining the heat transfer properties of wall elements, walls, windows and doors. In the HotBox, it is possible to...

λ in SI unit: [W/(m·K)] or British Thermal Units: [Btu in/(h·ft2·°F)] R in SI unit [(m2·K/W)] or British Thermal Units: [(h·ft2·°F)/Btu] The heat flow through a brick wall or a window part is defined by the U-value in [W/(m²K)]. The lower the U-value, the better the insulation property of the respective part of the building and therefore the greater the energy efficiency of the building as a whole. This illustrates the need to determine the U-value for all parts of the building envelope, such as brick walls, facades, windows and doors. Stationary methods are usually preferred for larger...

TDW 4040 Test Chamber for Determining the Stationary Heat Transfer Properties with a Heat Flow Meter in Accordance with DIN EN 1934 The compact test chamber TDW 4040 was designed for testing brickwork (such as brick, lime sand brick, concrete, or aerated concrete) and basically simulates the temperature and the natural convection inside and outside a building. Optionally, the humidity level in the two sections of the chamber can be set as needed. The HotBox software at the measurement and control units is used to set all parameters, as well as for complete data logging, detailed analysis...

HOTBOX TEST CHAMBERS with Heat Flow Meter Warm side Heat exchanger Heat exchanger Sample with HFM Air baffle Cold side Heatflow Principle illustration of HotBox test chamber with heat flow meter HotBox Test Chambers with Heat Flow Meter are Used to Determine the Stationary Heat Transfer Properties of Brickwork The test chamber consists of a cold and a warm section as well as a test frame that is positioned between the two sections of the chamber. Both sections contain heat exchangers for temperature control and air deflectors with radial fans to generate the necessary convection. In the...

Insulated warm and cold sections with heat exchangers and air deflectors, radial fans, roll chassis on guiding rails and 12-point locking system Insulated test frame with roll chassis and openings for sample insertion via forklift Recirculation cooler with water cooling for temperature control of warm and cold sections 2 isothermal blocks with 60 measuring points each, 1 set ot thermocouples, flow sensors, 2 heat flow meters with guard plates Control rack unit with measuring and control modules, PC printer and 23" monitor Interfaces: 1x RS232, 2x USB, 1x Gigabite Ethernet Single license for...

Test wall with calibration panel (special version).

TDW 4240 Test Chamber for Determining the Stationary Heat Transfer Properties with a Controlled Hotbox in Accordance with DIN EN ISO 8990, DIN EN 1946-4, DIN EN ISO 12567, DIN EN 12412-2, ASTM C1363, and DIN EN 1934 The compact test chamber TDW 4240 is designed for testing elements and components used in construction, such as windows, profiles, doors, domes and brick walls. It basically simulates the temperature and the natural convection inside and outside a building. Optionally, the humidity level in the two sections of the chamber can be set as needed. The HotBox software at the...

HOTBOX TEST CHAMBERS with Guarded Hotbox Warm side Heat exchanger 20 °C Heater warm side Heater hotbox Air baffle Cold side Heatflow Principle illustration of HotBox test chamber with guarded hotbox HotBox Test Chamber with Guarded Hotbox According to DIN EN ISO 8990, DIN EN 12412, DIN EN ISO 12567, ASTM C1363 (Measurement Principle) HotBox test chambers with guarded hotbox are primarily used for determining the stationary heat transfer properties of elements and components used for construction, such as windows, profiles, doors and domes. The test chamber consists of a cold and a warm...

and ments e l e g n tion esti onstruc ed for t Design nts used in c ne compo Insulated warm and cold sections with heat exchangers and air deflectors, radial fans, roll chassis on guiding rails and 12-point locking system Hotbox with axial fan, air deflectors, roll chassis and hydraulic cylinders Insulated test frame with roll chassis and openings for sample insertion via forklift Recirculation cooler with water cooling for temperature control of warm and cold sections Control rack unit with measuring and control modules, PC, printer and 23" monitor Interfaces: 1 x RS232, 2 x USB, 1x...

TDW 4240 (open) with test mask for windows.

HOTBOX SOFTWARE Universal program for control, data logging and analysis for test chambers for determining stationary heat transfer properties Supported Testing Methods Method with heat flow meter in accordance with DIN EN 1934 for brickwork Method with controlled hotbox according to DIN EN ISO 8990, DIN EN 1946-4, DIN EN ISO 12567, DIN EN 12412, ASTM C-1363 for standard windows, profiles, standard doors and surface shells Choice of manual or automatic measuring procedure with up to 16 definable measuring points per measurement Integrated calibration routines Display of all relevant data,...

Presentation of current single values. Main window with overview of main values and graphical presentation of U-value over time (optional temperature difference or temperature deviation). Graphical presentation of individual sensor values.

ACCESSORIES Accessories and options for test chambers with heat flow meter and controlled hotbox to expand upon their functions and allow them to be adapted to individual applications To adapt the test chambers for use for measuring various materials such as brickwork, windows, doors, profiles, domes and surface shells, additional equipment and consumables are needed. Furthermore, the chambers should be checked regularly and calibrated using appropriate reference materials. Suitable for test chamber type Description All models Cold water generator KWB 4310 for recooling of the recirculation...