8/24/2023 0 Comments Overhead radiant heatIn this case the Δt between head and feet is too great leading to uncomfortable conditions. ![]() Over heating is often caused by the radiant system suspended too low, the consequence being the ‘hot head’ and ‘cold feet’ syndrome. If these conditions are not met, then the environment within the facility will be uncomfortable due to either over or under heating! The theoretical heat loss calculations are based on steady-state conditions and can in reality only be a guide to the estimated running costs, as the actual situation will be in a dynamic state and the running costs will be dependent both on the way in which the facility is managed along with the average external temperature.Ī radiant tube heating system design requires an even heat distribution from a system suspended at an adequate height to achieve acceptable comfort conditions. The radiant output of the proposed equipment and hence the system output will nearly always be in excess of the theoretical loss. It must be realised that the radiant system capacity has to be such that a meaningful radiant coverage of the required floor area of the facility can be achieved. The models have to take into account the type of heating selected whether it is radiant or warm air.įrom the resultant of the theoretical heat loss calculation, an assessment of the required radiant system capacity can be undertaken. ![]() There are various models around all of which give very similar results. The calculation of the theoretical heat loss can then be undertaken. Typically for an industrial facility the design criteria might be as follows: ![]() The first step is to understand the design criteria the system is to perform to, as given by the specification or the client/end user. This blog is intended to give an overview of the simplified fundamentals of overhead radiant tube heating system design.
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