Developing a More Efficient Dehumidifier for Site Accommodation

Standard dehumidifer units are supplied by a 3-phase electrical connection.

Most drying rooms only have a single phase connection – upgrading this to 3-phase is costly and there is a lot of resistance to this by the cabin providers.

The single phase dehumidifiers we found were underpowered to provide enough heat in colder months, so we found that there was a product gap.

With El Bjorn we developed a single phase unit that has higher heat output for the winter months.

The new El Bjorn unit is now specified for all open plan A-Plant drying room cabins. It is also now an option for sites with modular accommodation.

We tested the performance of the dehumidifier in comparison to fan heaters. This involved weighing over individual 100 pieces of PPE each hour wet to dry over the course of a trial day. It also included measurement of temperature, humidity and energy, so it was a controlled experiment. It is this evidence-led approach that has enabled the adoption and rollout of the equipment at the rate we have seen.

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Entry submitted by Balfour Beatty

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