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5. Heat Pipe Heat Exchangers
Heat pipes
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Exhaust out
Separator plate
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Seal
Exhaust in
Heat pipe area in exhaust
Heat pipe heat exchanger construction
The mechanical and thermal properties of heat pipes, with their many advantages, make them particularly suitable for use as the heat conductors in heat exchangers, particularly for energy recovery applications that cannot be addressed by WUDGLWLRQDOGHVLJQV6SHFL¿FDOO\KHDWSLSHLVH[FHSWLRQDOO\ZHOO suited for energy recovery from high temperature, corrosive or contaminated exhaust streams.
‘cartridges’ of heat pipes are installed into a standard heat exchanger casing, suitable for a particular application. Where it is necessary, individual designs can be made to suit the individual needs of a particular application. Exhaust gas energy recovery installations will usually include one or more of three elements: 1. Heat exchanger to extract the energy from the hot exhaust gas and transfer to the cold stream (water, air etc.) to heat it up. 2. Diverter system composed of by-pass duct work around the heat exchanger together with diverter valves to facilitate maintenance or cleaning of the heat pipe heat exchanger. 3. &RQWUROV\VWHPVWRHQVXUHWKHKHDWHGÀXLGRUJDVLVKHDWHG to the required temperature, operates safely and can be safely shut down if there is a problem. The control system can also incorporate alarms, communications, self- diagnostics and reporting.
Heat pipe heat exchangers can be designed for most heating applications, with the majority addressing one of the following:
Exhaust Gas
Air Heating
Exhaust Gas
Water Heating
Exhaust Gas
Diathermic Oil Heating
Exhaust Gas
Steam Generation
Many application demands can be met from a modularised standard range of heat pipe heat exchangers, where standard
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