WIBO radiators in comparison – See for yourself!
Comparison Test III / 001 / 2009
WIBO direct radiator
DIMPLEX night-storage radiator
- WIBO brand direct radiator, type Millennium plus (2,000 watts) and
- DIMPLEX night-storage radiator, type vFDi 20c, (2000 watts)
Test location: Hamburg - Lokstedt
Test period 19 March 2009: (2:40:26 p.m.) until 20 March 2009 (3:00:35 p.m.)
Start of recording: 19 March 2009 (3:07:00 p.m.) until 20 March 2009 (3:00:35 p.m.)
The comparison text was conducted in order to determine the different energy consumption of a WIBO direct radiator, on the one hand, and a DIMPLEX night-storage radiator, on the other hand.
The test was conducted over a period of 24 hours. The internal space temperature was consistently thermostatically regulated at 20.5˚C. The test was conducted in two freestanding, identical rooms with a room size of 36.75 m2 with autumnal to wintery temperatures with ground frost under identical preconditions (cf. test report).
Two radiators were tested with equal power ratings, namely the WIBO direct radiator, type Millennium plus (power rating 2 kW) and a DIMPLEX night-storage radiator, type vFDi 20 c (power rating 2 kW).
Test procedure
The test was conducted using an automatic control for both radiators. During the course of the test, the functional process was not manually intervened with. The recording of the data took place using measurement sensors (surface temperature sensor OFE1, measurement range up to 400 ˚C) and JUMO data recording program, described below. The rooms were pre-heated (see description on page 2)
Test result as a PDF document (PDF total document 707KB.)
Comparison test of air circulation through convection heat
Comparison test to determine the air circulation through convection heat with WIBO electric radiators compared to other electric radiators (Honeywell, Welcome)
Test institute: Mess- und Prüflabor Hoedtke
Evaluation of the measurement results
The measurements show that the WIBO appliance (Appliance A) comparably achieved much higher air circulation that both other test appliances (Appliance B and Appliance C, see page 3):
The WIBO appliance achieves the better value due to:
- the typical WIBO surface design
- the numerous trapezoidal convection channels (chimney draughts)
- the arrangement and effectiveness of the radiators
- the reduction of radiated heat through the rear wall due to the fireclay insulation
Test results:
Compared to the Honeywell appliance, the WIBO appliance has 36.75% more air circulation.
Compared to the Welcome appliance, the WIBO appliance has 22.8% more air circulation.
Test result as a PDF document (PDF total document 111 KB.)
Comparison test of radiant heat
Comparison test to determine the share of radiant heat with WIBO electric radiators compared to other electric radiators (Honeywell, Welcome)
Test institute: Mess- und Prüflabor Hoedtke
Summary of this report
The measurements clearly show that the WIBO appliance (Appliance A) emits more than twice as much radiant heat through the front than the other test appliances (Appliance B2, B2, C), see page 13.
The WIBO appliance achieves this due to the integration of 5.4 kg heavy and insulated fireclay stones and through the selection of the material for the rear wall. These measures contribute to virtually no radiant heat being lost by the WIBO appliance through the rear wall.
The radiant heat is therefore generated more on the front and available to the room and the people. The radiant heat is not wasted through the rear wall, in order to e.g. heat up the wall behind the appliance..