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Patent Searching and Data


Title:
HOT WATER PIPING AND SLEEVE PIPE, HOT WATER HEATING PIPING WITH COMBINATION THEREOF AND HOT WATER PIPING SYSTEM USING SAME
Document Type and Number:
Japanese Patent JP2001021157
Kind Code:
A
Abstract:

To provide a hot water piping system in which heat discharged to outside air is decreased and an energy loss is suppressed in a hot water piping and a sleeve pipe and a hot water heating piping having the combination of them.

A hot water heating piping 4 has a hollow cylindrical sleeve pipe 9 made of polyethylene and having an inside diameter of 30 mm. In the sleeve pipe 9, hollow cylindrical supply 7 and return pipe 8 for causing hot water to flow which are made of crosslinked polyethylene and have an inside diameter of 10 mm are inserted and bundled. On the outer surfaces of the supply pipe 7 and the return pipe 8 a foaming resin film 10 made of foaming polyethylene lower in thermal conductivity than that of aluminium is wound. The thermal conductivity of the foaming resin film 10 is lower than that of an aluminium sheet, the rate of emission of heat outside from the supply pipe 7 and the return pipe 8 can be more lowered to suppress an energy loss than a prior art using the aluminium sheet.


Inventors:
ASAWA YASUHISA
NAKAMURA YOSHITAKA
YOSHIDA TERUMI
Application Number:
JP1999000196179
Publication Date:
January 26, 2001
Filing Date:
July 09, 1999
Export Citation:
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Assignee:
TOKYO GAS CO LTD
MITSUBISHI KAGAKU SANSHI CORP
International Classes:
F24D3/10; (IPC1-7): F24D3/10
Attorney, Agent or Firm:
森岡 正樹