Patent ID: 11971198
Assignee: RENEWABLE RESOURCE RECOVERY CORP.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  C  E | IPC C  E  F

Claim 1:
2. The concrete Single EPipe section of claim 1 wherein selected dimensional parameters are scaled upward according to performance of experimental prototypes wherein:, INTrad_64
SingleEPipe Inside radius, mm
  187.5;

64a1
L-steel CL radius, mm
236;

64a3
HE-channel helix CL radius, mm
248;

64a5
C-steel CL radius, mm
241;

OUTrad_64
SingleEPipe Outside radius, mm
  282.5;

while other factors are sufficiently adjusted to higher values according to a minimal steel requirement:, 64a2
theo. L-steel, sufficient count
 8-to-30;

64a6
C-steel, sufficient area, mm2
18.7-to-20.3;

still other parameters are held constant:, 64a4
L-steel area, mm2
  18.7;

64a7
C-steel helix pitch, mm
76;

64a8
HE-channel helix pitch, mm
76;

64a9
HE-channel OD, mm
19;

and several factors are scaling results:, 64a0
Layer-1 bottom radius, mm
175-to-370;

wall thickness, mm
 94-to-105;

nom. inner cover thickness, mm
25-40;

nom. outer cover thickness, mm
25-40;

and, for a pipe-section length of about 2.4 m, the resulting active HE channel-concrete contact area per section is about 2.6 m2.