prEN XXX-3

District heating and cooling pipes - Design and installation of flexible thermal insulated single and twin pipe systems for directly buried water networks - Part 3: Design prEN XXX-3

Scope

This document specifies requirements for the design for flexible, factory made, buried district heating and cooling pipe systems.

Pipe systems according to EN 15632-1/-2/-3, EN 17414 and EN 17878 are under the scope of this document, covering all temperature ranges TR1 to 3 and TR 5 depending on type of system. Adjacent pipes, not buried, but belonging to the network (e.g. pipes in ducts, valve chambers, road crossings above ground etc.) may be designed and installed according to this standard.

This document is intended to be used in conjunction with part X, Y or Z, as applicable.

This document is not applicable for:
1. pumps;
2. heat exchangers;
3. boilers, tanks;
4. systems behind domestic substations.

This document presupposes the use of treated water, which by softening, demineralization, de-aeration, adding of chemicals, or otherwise has been treated to effectively prevent internal corrosion and deposits in the pipes.

When use is made of this document, the different sections of which it is made up is to be interpreted as being interdependent and, because of this, cannot be dissociated