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 5:
6. The concrete Double EPipe section of claim 5, wherein selected dimensional parameters are scaled to larger values according to performance of experimental prototypes wherein:, (INTrad_65) DoubleEPipe inside radius, mm
759;

said pipe-wall thickness range being about 0.09 to 0.16

of the pipe ID;

(65a1)
L-steel 1, CL radius, mm
800;

(65a2)
C-steel 1, helix CL radius, mm
806;

(65a3)
HE-channel helix 1, CL radius, mm
813;

(65a5)
L-steel 2 CL radius, mm
849;

(65a6)
C-steel 2, helix CL radius, mm
856;

(65a7)
HE-channel helix 2, CL radius, mm
862;

while other factors are sufficiently adjusted to higher values according to a minimal steel requirement:, (65a8)
L-steel 1 count
17-to-50; 

(65a9)
L-steel 2 count
17-to-50; 

(65a10)
L-steel 1 area, mm2
3-to-40;

(65a11)
L-steel 2 area, mm2
3-to-40;

(65a14)
C-steel 1 area, mm2
3-to-40;

(65a15)
C-steel 2 area, mm2
3-to-40;

and still other parameters are held constant:, (65a12)
C-steel 1 helix pitch, mm
76;

(65a13)
C-steel 2 helix pitch, mm
76;

(65a16)
HE-channel helix 1 pitch, mm
76;

(65a17)
HE-channel helix 2 pitch, mm
76;

(65a18)
HE-channel-1, OD, mm
19;

(65a17)
HE-channel-2, OD, mm
19;

and several factors are scaling results:, (65-0)
Layer-1 bottom radius, mm
550-to-856;

(65-00)
Layer-2 bottom, radius, mm
599-to-856;

(65a4)
radial layer spacing, 65-0 to 65-00, mm
40-to-60;

a third elliptical layer cage may also be added;
welded-wire mesh, MW/MD25.8(W/D4), is substituted for L-steel and C-steel of the cages;
and, for a pipe-section length of about 2.4 m, and the resulting active HE channel-concrete contact area (2 layers of HE-channel) per section is about 20 m2.