šŸ”„šŸ”„ Donā€™t Miss Out on Our End of Autumn Sale. If you have any questions, feel free to click the bottom right corner to contact our customer service..

Concat us[email protected]
Shopping Cart

No products in the cart.

šŸ”
BS EN 17522:2023

BS EN 17522:2023

$198.66

Design and construction of backfilled and grouted borehole heat exchangers

Published By Publication Date Number of Pages
BSI 2023 64
PDF Format Searchable Printable Preview Now
Guaranteed Safe Checkout
Category:

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. Weā€™re here to assist you 24/7.
Email:[email protected]

This document covers standardization in the field of geological and environmental aspects, design, construction, operation, monitoring, maintenance and decommissioning of grouted borehole heat exchangers for uses in geothermal energy systems. This document is only applicable for backfilled and grouted boreholes, it is not applicable for groundwater-filled boreholes. Direct expansion and thermal syphon techniques are excluded from this document.

PDF Catalog

PDF Pages PDF Title
2 undefined
9 1 Scope
2 Normative references
10 3 Terms and definitions
12 4 Geological and environmental aspects
4.1 General
13 4.2 Geological and hydrogeological risks
4.2.1 Artesian aquifers
4.2.2 Stacked aquifers with different groundwater potential
4.2.3 Groundwater and soil chemistry
4.2.4 Gas occurrence
4.2.5 Ground stability
14 4.2.6 Contrasting geological sequence (Alternated bedding)
4.2.7 Karst geology
15 4.2.8 Frost susceptibility
4.2.9 Groundwater protection area
4.3 Anthropogenic risks and constraints
4.4 Environmental aspects
4.4.1 General
4.4.2 Influence on groundwater
16 4.4.3 Environmental impact due to construction works
4.4.3.1 General
4.4.3.2 Materials
4.4.3.3 Drilling process
4.4.3.4 Waste management
17 5 System description
5.1 General
5.2 Borehole heat exchanger
19 5.3 Horizontal piping
5.4 Manifolds
20 5.5 Thermal plant
6 Materials
6.1 General properties
6.2 Materials
6.2.1 Polymeric materials
22 6.2.2 Connection methods
23 6.2.3 Metallic materials
6.3 Heat transfer fluid
24 6.4 Backfilling materials
6.4.1 General
6.4.2 Grouting material
25 6.4.3 Other backfilling materials requirements
6.5 Component selection criteria
6.5.1 General
6.5.2 BHE loops
26 6.5.3 Horizontal pipes
6.5.4 Manifolds
6.5.5 Heat transfer fluid
7 Design
7.1 Steps of design
27 7.2 Sizing
7.2.1 General
28 7.2.2 General methodology
7.2.2.1 General
29 7.2.2.2 Inputs
7.2.2.3 Sizing criteria
30 7.2.2.4 Calculation procedure
7.2.2.5 Outputs
31 7.2.3 Thermal properties of the ground
32 7.2.4 Thermal Response Test (TRT)
7.2.4.1 General
7.2.4.2 Theoretical background
7.2.4.3 Line source approximation
34 7.2.4.4 TRT test apparatus
36 7.2.4.5 TRT procedure
7.2.4.6 Test evaluation
38 7.2.4.7 Correct use of the results
39 7.2.4.8 Documentation of results
7.2.5 Calculation and modelling procedure
7.2.5.1 General
40 7.2.5.2 BHE models
7.2.6 Simulation
7.2.6.1 General
41 7.2.6.2 Starting time
7.2.6.3 Simulation/calculation time
7.2.7 Hydraulic design
42 8 Construction
8.1 General
8.2 Site preparation and planning
43 8.3 Drilling
8.3.1 General
8.3.2 Drilling diameter
8.3.3 Drilling fluid
8.3.4 Monitoring and documentation of the drilling process
44 8.4 Borehole heat exchanger loop
8.5 Borehole heat exchanger loop installation
45 8.6 Backfilling and grouting procedure
8.6.1 General
8.6.2 Grouting procedure
46 8.6.3 Other backfilling procedure
8.7 Horizontal piping
47 8.8 Testing and checking of BHE ā€“ Leakage, flow, grouting, geophysical measurements
8.9 Manifolds
48 9 Start-up
9.1 General
9.2 Heat transfer fluid
9.3 Filling of the system
9.4 Drying of new buildings
9.5 Commissioning
49 9.6 Documentation
10 Operation, monitoring and maintenance
10.1 Operation
10.2 Monitoring
10.2.1 General
50 10.2.2 Temperature
10.2.3 Pressure
10.2.4 Flow rate
10.3 Maintenance
51 11 Renovation
12 Decommissioning
12.1 General
12.2 Heat transfer fluid
12.3 Borehole heat exchangers
12.3.1 Backfilled boreholes
52 12.4 Horizontal pipes
12.5 Documentation
53 Annex A (informative)Insulation of horizontal piping
54 Annex B (informative)Example simulation time
B.1 General
B.2 Single house, unbalanced energy design
55 B.3 Field of 30 houses with an unbalanced design
56 B.4 Field with 400 houses with an unbalanced design
B.5 Conclusion
57 Annex C (informative)Commissioning checklist
59 Annex D (informative)Examples of thermal conductivity and volumetric – heat capacity of the underground
61 Annex E (informative)Main drilling methods

Related products

BS EN 17522:2023
$198.66