References
The works listed below document the methods implemented in GLN Analysis: the Darcy-Weisbach formulation of distributed losses and the friction-factor correlations used to close it, the loss-coefficient treatment of fittings, the thermo-physical correlations of the antifreeze solutions, the reference cases against which the solver is verified, and the design practice the panel's advisory checks are drawn from.
- ASHRAE, 2021. ASHRAE Handbook — Fundamentals, Ch. 22 "Pipe Design"; and ASHRAE, 2023. ASHRAE Handbook — HVAC Applications, Ch. 35 "Ground-Source Heat Pumps and Geothermal Energy". American Society of Heating, Refrigerating and Air-Conditioning Engineers, Atlanta, GA. (The two volumes are issued on different years of the Handbook cycle; the chapter was numbered 34, and titled "Geothermal Energy", before the 2019 edition.) ↩
- ASTM International. D3035 — Standard Specification for Polyethylene (PE) Plastic Pipe (DR-PR) Based on Controlled Outside Diameter, and F714 — Standard Specification for Polyethylene (PE) Plastic Pipe (DR-PR) Based on Outside Diameter. ASTM International, West Conshohocken, PA. ↩
- Crane Co., 2013. Flow of Fluids Through Valves, Fittings and Pipe, Technical Paper No. 410. Crane Co., Stamford, CT. ↩
- U.S. Department of Energy and Hydraulic Institute, 2006. Improving Pumping System Performance: A Sourcebook for Industry, 2nd ed. DOE/GO-102006-2079, Industrial Technologies Program, Washington, DC. ↩
- DIN, 2012. DIN 1988-300:2012-05 — Codes of practice for drinking water installations — Part 300: Pipe sizing; DVGW code of practice (Technische Regeln für Trinkwasser-Installationen — Teil 300: Ermittlung der Rohrdurchmesser). Deutsches Institut für Normung, Berlin, 44 pp. ↩
- Georg Fischer Piping Systems, Schaffhausen, Switzerland. Technical Handbook for Pressure Piping Systems, section "Calculating Pipe Size — Pressure Loss of Fittings". (Read here in the US edition, EPS Pressure Piping Systems Tech Handbook, p. 21; the handbook covers PP and PVDF fittings.) ↩
- Idelchik, I.E., 1994. Handbook of Hydraulic Resistance, 3rd ed. CRC Press, Boca Raton, FL. ISBN 978-0-8493-9908-3. ↩
- ISO, 2019. ISO 4427 — Plastics piping systems for water supply, and for drainage and sewerage under pressure — Polyethylene (PE). International Organization for Standardization, Geneva. (Published in Europe as EN 12201.) ↩
- Javed, S., Spitler, J.D., 2022. Vertical ground heat exchanger pressure loss – experimental comparisons and calculation procedures. Geothermics 105, 102546. DOI: 10.1016/j.geothermics.2022.102546 (Measured pressure loss on four types of heat exchanger in a 200 m borehole: the standard procedures hold for smooth single- and double-U tubes; internally ridged tubing needed a new correlation, and on the coaxial exchanger fittings intruding into the annulus had to be accounted for.) ↩
- Kavanaugh, S.P., Rafferty, K., 2014. Geothermal Heating and Cooling: Design of Ground-Source Heat Pump Systems. ASHRAE, Atlanta, GA. ISBN 978-1-936504-85-5. (Supersedes the 1997 Ground-Source Heat Pumps design manual.) ↩
- Lamarche, L., 2023. Fundamentals of Geothermal Heat Pump Systems: Design and Application. Springer, Cham. Ch. 7 "Pumping Energy". DOI: 10.1007/978-3-031-32176-4 (chapter 7: 10.1007/978-3-031-32176-4_7) ↩
- Melinder, Å., 2007. Thermophysical Properties of Aqueous Solutions Used as Secondary Working Fluids. Doctoral thesis, KTH Royal Institute of Technology, Stockholm. ISBN 978-91-7178-707-1. ↩
- Melinder, Å., 2010. Properties of Secondary Working Fluids for Indirect Systems, 2nd ed. International Institute of Refrigeration (IIR), Paris. ISBN 978-2-913149-73-4. ↩
- Naicker, S.S., Rees, S.J., 2018. Performance analysis of a large geothermal heating and cooling system. Renewable Energy 122, 429–442. DOI: 10.1016/j.renene.2018.01.099 (30 months of monitoring on a 56-borehole university installation. Seasonal performance falls from 3.54 at the compressor to 2.97 once the ground-loop pump is counted and 2.49 with all circulation; the authors attribute the excess pump energy to high pipe velocities, short and frequent cycling, and control faults.) ↩
- Plastics Pipe Institute, 2008. Handbook of Polyethylene Pipe, 2nd ed., Chapter 6 "Design of PE Piping Systems", Table 2-1 "Surface Roughness for Various New Pipes". Irving, TX. (Smooth pipes — PE and other thermoplastics, brass, glass and lead: mean and recommended design value = "smooth pipe", ε = 0.000005 ft = 0.0015 mm, with the note that any pipe at or below that value exhibits smooth-pipe behaviour. Commercial steel, new: 0.00015 ft = 0.046 mm.) ↩
- Picard, D., Jorissen, F., Helsen, L., 2017. Analytical solution for optimal mass flow rate in primary circuit of ground-coupled heat pump systems. Proceedings of the IGSHPA Technical/Research Conference and Expo, Denver, CO, March 14–16, 2017. ↩
- Plastics Pipe Institute, 2022. Handbook of Polyethylene Pipe, 3rd ed., Ch. 6 "Design of PE Piping Systems". Plastics Pipe Institute, Irving, TX. ↩
- Rhoda, B., 2013. Investigation of Pumping and Piping System Design for Commercial Ground Source Heat Pumps. M.Sc. thesis, Oklahoma State University, Stillwater, OK. ↩
- Vautrin, A., Mazzotti Pallard, W., Acuña, J., Lazzarotto, A., 2024. Assessing coaxial collector performances: field data and analysis. Proceedings of the IGSHPA Research Conference, Montréal, QC, May 28–30, 2024, pp. 375–388. DOI: 10.22488/okstate.24.000040 (Field data from 11 coaxial installations: measured pressure drop departs from the calculated value by 75 % on average in absolute relative error, and the effective borehole resistance by 33 %.) ↩