Backfill to buried pipe heat exchanger through hole
A buried pipe heat exchanger and cement technology, which is applied in the field of building materials, can solve the problems of increasing the total length of the drilling hole, small thermal conductivity, and increasing the thermal resistance of the drilling hole, so as to reduce the length of the buried pipe, improve the thermal conductivity, The effect of improving workability
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Example Embodiment
[0026] Example 1: The manufacturing steps of the present invention are as follows. The weight ratio of the borehole backfill material of the buried pipe heat exchanger is as follows: ordinary Portland cement (P·O32.5R) 100, quartz sand 213, and defoamer (organic silicon NFX) 0.1, bentonite (sodium-based) 2, water reducing agent (naphthalene-based NF-B) 1.5. During on-site construction, 60% of the weight of the cement is added with water and mixed into a slurry to be injected into the buried pipe borehole. After testing, the thermal conductivity is 2.34W / (m.K), and the thermal diffusion coefficient is 0.91mm 2 / s, specific heat 2.58MJ / (m 3 .K), consistency 10.0cm, expansion rate 0.01%, flexural strength (28d) 7.8MPa, compressive strength (28d) 35Mpa.
Example Embodiment
[0027] Example 2: The manufacturing steps of the present invention are as follows. The weight ratio of the borehole backfill material of the buried pipe heat exchanger is as follows: ordinary Portland cement (P·O32.5R) 100, quartz sand 200, and defoamer (organosilicon NFX) 0.05, bentonite (sodium-based) 1.1, water-reducing agent (naphthalene-based NF-B) 1.5. During on-site construction, add water to mix 50% of the weight of the cement to form a slurry and inject it into the buried pipe borehole. After testing, the thermal conductivity is 2.02W / (m.K), and the thermal diffusion coefficient is 0.99mm 2 / s, specific heat 2.05MJ / (m 3 .K), the consistency is 11.3cm, the expansion rate is 0.02%, the flexural strength (28d) is 6.3MPa, and the compressive strength (28d) is 31.5Mpa.
PUM
Property | Measurement | Unit |
---|---|---|
Thermal conductivity | aaaaa | aaaaa |
Thermal diffusivity | aaaaa | aaaaa |
Consistency | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap