1. «Development and analysis of heat exchanger combined with fire tank with a view of its application as part of geothermal heat pump»

2. Firewater tanks are located near the building

3. The scheme of outdoor air cooling

4. Simplified analytic solver algorithm
Assumption T_water in fire tank
Calculate Heat Flux
Air->Water
Geometry
calculation
Calculate Delta between different Heat Flux
Calculate Heat Flux
Water->ground

5. Geometry of heat exchanger and Heat Flux

6. Result of analytic calculation

7. Geometry of heat exchanger

8. Relation between heat flux and tube size

12. Numerical solution

13. Solution area

14. Mesh
About 350,000 grid
5mm max

15. Velocity (static)

16. Temperature (static)

17. Temperature with streamline (static)

19. Transient mode first 15 min

20. Temperature with streamline velocity (1hour)

21. Temperature with streamline velocity (3hour)

22. Thanks for attention