Heat Exchangers

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Reduce your hot water and heating bills by up to 100% with a Crowley Carbon heat recovery unit

Many commercial locations generate waste heat whether through refrigeration, air conditioning or  manufacturing processes. Most businesses also spend energy to heat water for kitchens or hot water heating systems. Crowley Carbon unique heat recovery systems capture waste heat and uses it to heat water which can then be used for a myriad of uses. A heat recovery unit will also cool existing plant rooms and equipment and cause refrigeration and A/C compressors to run less often. Applications for this product can be found everywhere from Hotels and Restaurants to Retail locations and Hospitals.

Our heat recovery systems are totally different to all other types of heat recoverer.

The water storage cylinder is connected to the cold water supply at its base. As soon as the connected refrigerant plant starts running, cold water flows out of the cylinder into the inner tube of the double-pipe heat exchanger where - passing in contra-flow with refrigerant flowing through the outer annular tube - it is heated. The refrigerant is fully condensed.

The water flow is by self-regulating, natural thermodynamic action. It flows along the so-called 'superheat path' of the refrigerant where it is heated to 5-7°C above the condensing temperature. This heated water then transfers to the top of the insulated cylinder where it is stored until needed. It does not mix with the cold water.

The user can draw-off hot water at a sufficiently high temperature within minutes (eg at 55°C based on a condensing temperature of 48°C). Boost heating using costly primary energy is needed only in exceptional cases.

The Permanent Transfer System even subcools the refrigerant, resulting in a further energy gain. This gain can be exploited, as required, to marginally increase the refrigerant operating pressure, resulting in a higher water temperature. In this way the user is supplied with 'pasteurised' hot water after only a few minutes plant operation. One of the most important features of the Permanent Transfer System is the location of the heat exchangers.

Some Clients -

McDonalds

Centra