What is an open loop sea water collector?

Open loop sea water collectors take the form of two separate straight pipe collectors that feed heat from the sea water to the ground source heat pump system.

As per all open loop system collectors, no anti-freeze fluid is featured in open loop non-tidal collector installations. These installations involve sea water being abstracted from one location and filtered through the heat pump. This water is then discharged back to the sea water in a separate location.

Consideration needs to be taken with regards to corrosion issues, filtration, extraction and possible freezing within the heat exchanger. It is also important to consider the electrical energy required to pump the water to the heat pump.

Things to consider

If you are considering an open loop borehole for your ground source heat pump system, there are a number of points which need to be taken into consideration:

  • Seek relevant permissions from the Environmental Agency
  • Consider the design of any scheme to ensure its longevity and efficient performance
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