F - Mech Eng,Light,Heat,Weapons – 28 – F
Patent
F - Mech Eng,Light,Heat,Weapons
28
F
126/14
F28F 7/00 (2006.01) F24D 11/00 (2006.01) F24H 7/04 (2006.01)
Patent
CA 2001505
A heat exchanger system having an improved heat accumulator or heater block is disclosed for utilizing off-peak electrical power. The heater block utilizes a high thermal conductive material having electric heater wires embedded therein. Passageways extend through the heater block and heater fluid tubes are located in the passageway and carries heat transfer fluid through the heater block. A packing material is located between the side walls of these tubes and the walls of the passageway wherein the packing material has a suitable thermal expansion coefficient whereby when the block is heated the packing material can compensate for the difference in expansion between the block and the heater fluid tube thereby avoiding cracking of the fluid tube and heater block. Liquid circulation pumps are included and the heater block is in fluid communication with various heat exchangers for heating applications such as heating rooms. The heater block can be heated up to about 850°C and the heater block power supply is coupled to a clock so that the heat exchanger can be operated at those off-peak periods during the day when excess utility power is available. The pipes in the accumulator are shaped and dimensioned to withstand high thermal stress and to provide a steam-cover or gas-lock when the circulation pumps are off. The fluid circulation pumps are controlled in such a way that no fluid is circulated through the system until the fluid in the heater block has been heated to a predetermined temperature.
Fetherstonhaugh & Co.
Jakobsson Leif
LandOfFree
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