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Spitler, regents professor of mechanical engineering at OSU and the OG&E energy technology chair. https://betsrg.org/news/osu-celebrates-cibs-first-year monthly 0.5 2025-07-18 https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/1649797071406-IMRNG8NBMMW80EROA7R9/group-1-cropped.jpg News - OSU center celebrates successful first year - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://betsrg.org/news/cibs-meeting-2022 monthly 0.5 2022-04-12 https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/1649796741387-UXOQ61XJSOSK310TH5X6/IMG_2747.JPG News - CIBS 2022 Update & Strategy Meeting https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/1649796752996-NCE1I9LNZMJXWAU9U44T/IMG_2754.JPG News - CIBS 2022 Update & Strategy Meeting https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/1649796759795-H39TQCIU591904URJU7T/IMG_2832.JPG News - CIBS 2022 Update & Strategy Meeting https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/1649796741456-1M3E6AWMJEO0MNJIW7OM/group-1-cropped.jpg News - CIBS 2022 Update & Strategy Meeting https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/1649796753473-GR596KRAOLMOQHUVLZ15/IMG_2805.JPG News - CIBS 2022 Update & Strategy Meeting https://betsrg.org/home daily 1.0 2025-07-19 https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/ac24fe41-748e-4096-8c46-f6118abe3918/IMG_2793.JPG Home - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/6c9a8554-b2e9-488d-9b34-92fbbb579b3d/IRCC+2023.jpg https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/d828ab4b-b68b-4efb-a9cd-e3e943059059/IRCC+2022.jpg https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/2ffa0a1b-2391-4bef-9d94-9996b3b4e1cc/Mohammadrza+presenting+4-8-25.jpg https://betsrg.org/papers daily 0.75 2025-11-15 https://betsrg.org/christian-bach daily 0.75 2022-06-15 https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/1655331684887-YBK81DF58XJ13K9AJGU3/bach.jpeg Christian Bach Christian Bach Associate Professor Mechanical and Aerospace Engineering Oklahoma State University 201 General Academic Building Stillwater, Oklahoma 405.744.5916 cbach@okstate.edu Education Ph.D., Mechanical Engineering Purdue University, 2014 Dipl.-Ing.(FH), Mechanical Engineering Hochschule Karlsruhe - Technik und Wirtschaft - University of Applied Sciences, 2008 Research Interests Heat Pumps and Air Conditioners Virtual Sensors for Vapor Compression Systems Evaporators, especially with respect to Flow Control and Flow Distribution Frosting and Fouling Optimization of Defrost Process Compressor Performance Improvement Heat Recovery Awards and Recognition Willis H. Carrier IIR Young Researchers Award - officially awarded August 2015 at the 24th International Institute of Refrigeration (IIR) Congress of Refrigeration in Yokohama, Japan., 2015 ASHRAE Graduate Student Grant-In-Aid. ASHRAE, Atlanta., 2010 Valerius Füner Preis. Award for outstanding diploma: University of Applied Sciences, Karlsruhe, Germany., 2009 Free one-year membership at the "Deutsche Physikalische Gesellschaft", as acknowledgment for outstanding skills in the subject physics as evidenced at Carl-Engler Schule, Karlsruhe, Germany., 2004 Acknowledgment for outstanding examination results during the final examinations as part of 3-year dual system internship, Chamber of Commerce and Industry Karlsruhe (IHK). Germany, 2001 Professional Memberships ASHRAE Vice Chair for TC 8.8, Refrigerant Systems Controls and Accessories; Vice Chair for TC10.07, Commercial Food and Beverage Refrigeration Equipment; Member of the ASHRAE ‘by nomination only’ STBE Review Board; Voting Member. Standards Committee SPC33 - Method of Testing Forced Air Cooling and Heating Coils; Secretary, Technical Committee 8.4, Air-to-Refrigerant Heat Transfer Equipment; Voting Member, Technical Committee 8.4, Air-to-Refrigerant Heat Transfer Equipment; Webmaster, Technical Committee 8.4, Air-to-Refrigerant Heat Transfer Equipment ASME (American Society of Mechanical Engineer Campus Involvement Pi Tau Sigma ( International Honor Society for Mechanical Engineers) Faculty Adviser SAE International Faculty Adviser/Co-Adviser for OSU Formula SAE OSU American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE) chapter faculty co-adviser Recent Publications Kincheloe, M. C., J. P. Franke, K. Bach, C. R. Bradshaw (2021). Design of a Psychrometric Coil Testing Facility for Commercial Size Heat Exchanger Coils, JIJR. 121: 143 - 151. Ahmed, M., H. Park, K. Bach, O. San. (2020). Numerical Investigation of Air Mixer for HVAC Testing Applications (ASHRAE RP-1733). STBE. 26(9): 1252-1273. Lee, A., C. K. Bach, and C. R. Bradshaw (2020). Differential Mass Evacuation Sampling Technique for Measuring Refrigerant Charge and Oil Retention of Round Tube Plate Fin Heat Exchangers (ASHRAE RP-1785). STBE. 26(6): 790-804. Saleem, S., Sarfraz, C.R. Bradshaw, and C.K. Bach (2020). Development of Novel Experimental Infrastructure for Collection of High-Fidelity Experimental Data for Refrigerant to Air Heat Exchangers. JIJR. 114: 189-200. Park, H. and K. Bach. (2020). A Literature Review of Air Mixing Devices for Psychrometric Performance Measurement Application (ASHRAE RP-1733). 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Spitler Dr. Jeffrey D. Spitler Regents Professor, OG&E Energy Technology Chair Mechanical and Aerospace Engineering 201 General Academic Building 405.744.5900 spitler@okstate.edu Education Ph.D., Mechanical Engineering University of Illinois at Urbana-Champaign, 1990 M.S., Mechanical Engineering University of Illinois at Urbana-Champaign, 1984 B.S., Mechanical Engineering University of Illinois at Urbana-Champaign, 1983 Research Interests Ground source heat pump systems Thermal systems analysis, simulation and design Convective and radiative heat transfer in buildings Building simulation Load calculations and energy analysis Building performance monitoring Design of building environmental systems Awards and Recognition 2023 Peter Ritter von Rittenger Award, International Energy Agency 2019 ASHRAE Exceptional Service Award 2017, Inducted into the ASHRAE Central Oklahoma Chapter Hall of Fame 2015 Appointed Honorary Professor, North China University of Technology, Beijing. 2014 Appointed 2014-2015 Fulbright Distinguished Chair of Alternative Energy Technology at Chalmers Technical University, Sweden. 2014 Appointed OG&E Energy Technology Chair 2014 E.K. Campbell Award (ASHRAE) 2013 IBPSA Fellow 2012 IBPSA-USA Award for Achievement in Building Simulation 2010 Crosby Field Award (ASHRAE) 2010 ASHRAE Technical Paper Award, for Refinements and Improvements to the Radiant Time Series Method 2008 Appointed Regents Professor 2008 Appointed Visiting Professor, University of Strathclyde, Glasgow. 2007 Oklahoma State University Regents Distinguished Research Award 2006 Appointed Adjunct Professor, Hunan University, Changsha, China 2006 ASHRAE Technical Paper Award, for Development of the Residential Load Factor Method for Heating and Cooling Load Calculations 2006 ASHRAE Technical Paper Award, for The Residential Heat Balance Method for Heating and Cooling Load Calculations 2004 ASHRAE Fellow 2002 ASHRAE Technical Paper Award, for An Analytical Verification Test Suite for Building Fabric Models in Whole Building Energy Simulation Programs 2001 C.M. Leonard Professorship 2000 CIBSE Napier Shaw Bronze Medal, for Comparison of Peak Load Predictions and Treatments of Solar Gains in the Admittance and Heat Balance Load Procedures. 2000 Distinguished Service Award, American Society of Heating, Refrigerating and Air-conditioning Engineers. 1999 Halliburton Outstanding Faculty Award, OSU College of Engineering, Architecture and Technology. 1993 Halliburton Outstanding Young Teacher Award, OSU College of Engineering, Architecture and Technology. 1991-1992 Outstanding Mechanical Engineering Faculty Award, School of Mechanical and Aerospace Engineering. 1991 Outstanding New Contributor Award, International Building Performance Simulation Association. Professional Memberships American Society of Heating, Refrigerating and Air Conditioning Engineers International Building Performance Simulation Association International Ground Source Heat Pump Association Professional Registrations Licensed Professional Engineer, Oklahoma Recent Publications Spitler, J.D. and S.E.A. Gehlin. 2023. Field measurements of building heating and cooling system performance. Science and Technology for the Built Environment 29(2): 107-108. https://doi.org/10.1080/23744731.2023.2171956 Cui, P., Yang, W. Yang, W. Zhang, K. Zhu, J. D. Spitler, M. Yu. 2022. Advances in ground heat exchangers for space heating and cooling: review and perspectives, Energy and Built Environment. https://doi.org/10.1016/j.enbenv.2022.10.002 Javed, S. and J.D. Spitler. 2022. Vertical Ground Heat Exchanger Pressure Loss – Experimental Comparisons and Calculation Procedures. Geothermics 105: 102546. https://doi.org/10.1016/j.geothermics.2022.102546 Liu, X., J. D. Spitler, M. Qu and L. Shi. 2021. Recent Developments in the Design of Vertical Borehole Ground Heat Exchangers for Cost Reduction and Thermal Energy Storage. Journal of Energy Resources Technology 143(10). https://doi.org/10.1115/1.4050418 Mitchell, M. S. and J. D. Spitler. 2020. An Enhanced Vertical Ground Heat Exchanger Model for Whole-Building Energy Simulation. Energies 13(16): 4058. https://doi.org/10.3390/en13164058 Qian, M., D. Yan, J. An, T. Hong and J. D. Spitler. 2020. Evaluation of thermal imbalance of ground source heat pump systems in residential buildings in China. Building Simulation. https://doi.org/10.1007/s12273-020-0606-5 Mitchell, M. S. and J. D. Spitler. 2019. Characterization, testing, and optimization of load aggregation methods for ground heat exchanger response-factor models. Science and Technology for the Built Environment 25(8):1036-1051. doi: 10.1080/23744731.2019.1648936 Spitler, J. D. and S. Gehlin. 2019. Measured Performance of a Mixed-Use Commercial-Building Ground Source Heat Pump System in Sweden. Energies 12(10): 2020. https://doi.org/10.3390/en12102020 Mitchell, M.S., Hansen, G.M. and J.D. Spitler. 2018. Experimental Development of Natural Convection Heat Transfer Correlations for Spiral-Helical Surface Water Heat Exchangers (1385-RP). Science and Technology for the Built Environment. 24(7):714-725. https://doi.org/10.1080/23744731.2017.1365764 https://betsrg.org/craig-bradshaw daily 0.75 2022-06-15 https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/1655330882691-5G6S0LIOGOQLRY98KNAE/bradshaw.jpeg Craig Bradshaw Craig Bradshaw Assistant Professor Carol M. Leonard Professorship & Director of CIBS Mechanical and Aerospace Engineering Oklahoma State University 201 General Academic Building Stillwater, Oklahoma 405.744.5916 craig.bradshaw@okstate.edu Education Ph.D., Mechanical Engineering Purdue University, 2012 B.S.M.E., Mechanical Engineering Purdue University, 2007 Research Interests Building and Energy Thermal Systems Positive-Displacement Compressor Modeling Waste-Heat Recovery and Utilization Positive-Displacement Expanders Novel Positive-Displacement Mechanisms Vapor Compression for Electronics Cooling Applications Novel Power Generation and Heat Pumping Cycles Awards and Recognition Golden Torch Award presented by Oklahoma State Mortar Board Chapter, Fall 2018 Best Student Paper, 2012 International Compressor Engineering Conference at Purdue, July 2012 Ward A. Lambert Teaching Fellowship, July 2011 Best Student Paper, 2010 International Compressor Engineering Conference at Purdue, July 2010 ASHRAE Grant-in-Aid Award Winner, 2009 Best Poster, Cooling Technologies Research Center Bi-annual Meeting, May 2008 Professional Memberships MAE Department Head Search Committee, Oklahoma State University Scientific Committee, International Conference on Compressors and their Systems Chair, Building and Environmental Thermal Systems Research Group Industrial Advisory Committee,Oklahoma State University Graduate Activities Committee member, Oklahoma State University ASHRAE student branch advisor, Oklahoma State University ASHRAE full member Voting member, Vice Chair, Research Chair, ASHRAE TC 8.1 (Positive Displacement Compressors) Voting member, Webmaster, ASHRAE TC 1.2 (Measurement Equipment) Corresponding member ASHRAE TC 8.11 (Unitary Equipment) Corresponding member ASHRAE TC 2.5 (Climate Change) Manuscript reviewer,Int. J. Ref., App. Therm. Eng., Energy, App.Campus Involvement Pi Tau Sigma ( International Honor Society for Mechanical Engineers) Faculty Adviser SAE International Faculty Adviser/Co-Adviser for OSU Formula SAE OSU American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE) chapter faculty co-adviser Courses Taught MAE 5803 Advanced Thermodynamics MAE 5010 Int. Ref. and Comp. MAE 4344 Mech. Eng. Projects MAE 3524 Thermal Fluids Design MAE 4010 (4723) Refrigeration Systems Design MAE 5633 Adv. Thermal Energy Systems Analysis MAE 3223 Thermodynamics II MAE 5010 (5633) Adv. Therm. Egy. Sys. Analysis ME 200 Thermodynamics I Recent Publications Islam, M., Tubbs, C., Bengs, C, Bradshaw, C.R.„ 2021. Development of a Reconfigurable PrototypePeristaltic Compressor.In: Proceedings of the International Conference on Compressors and theirSystems, City University, London, UK. (abstract submitted). Gabel, K., Bradshaw, C.R.„ 2021. A Semi-Empirical Reduced-Order Compressor Model to CaptureModulation and Enable Extrapolation.In: Proceedings of the International Conference onCompressors and their Systems, City University, London, UK. (abstract submitted). Tanveer, M., Bradshaw, C.R.„ 2021. Performance Evaluation of low-GWP Refrigerants in 1-100Ton Scroll Compressors.In: Proceedings of the International Conference on Compressors and theirSystems, City University, London, UK. (abstract submitted). Lee, A., Bach, C., Bradshaw, C.R.„ 2021. Differential Mass Evacuation Sampling Technique forMeasuring Refrigerant Charge and Oil Retention of Round Tube Plate Fin Heat Exchangers(ASHRAE RP-1785).In: Proceedings of the International Refrigeration Engineering Conference,Purdue University, West Lafayette, IN, USA. (submitted). Saleem, S., Bradshaw, C.R.„ 2021. The Thermodynamic Behavior Of Low-GWP ZeotropicMixtures On Water-Source Heat Pump Equipment.In: Proceedings of the InternationalRefrigeration Engineering Conference, Purdue University, West Lafayette, IN, USA. (submitted). https://betsrg.org/daniel-fisher daily 0.75 2022-06-23 https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/1655331531773-CPXAM1B01G79M4G1ZK31/fisher.jpeg Daniel Fisher Daniel Fisher Professor, Van Weathers Chair & Director of Zink Center Mechanical and Aerospace Engineering Oklahoma State University 201 General Academic Building Stillwater, Oklahoma 405.744.5900 dfisher@okstate.edu Education Ph.D., Mechanical Engineering University of Illinois at Urbana-Champaign, 1995 M.S., Mechanical Engineering University of Illinois at Urbana-Champaign, 1989 B.S., Mechanical Engineering University of Illinois at Urbana-Champaign, 1983 B.A., International Business Carthage College, 1981 Awards and Recognition IBPSA Fellow, 2013 ASHRAE Fellow, 2010 Regents Distinguished Teaching Award, 2009 Halliburton Outstanding Teaching Award, 2007 SAE Ralph J. Teetor Educational Award, 2004 R&D 100 Award, 2003 Pi Tau Sigma Outstanding Faculty Award, 2002 Campus Involvement ASHRAE Student Branch Advisor: 2000 - present Courses Taught ENGR 1111 Intro to Engineering MAE 3223 Thermodynamics II MAE 3233 Heat Transfer MAE 4713 Thermal Systems Design, Simulation and Optimization MAE 4703 Design Indoor Environmental Systems MAE 4263 Vapor Power Systems (Energy Conversion Systems) MAE 4344 Design Projects MAE 5863 Building Heat Transfer and Simulation MAE 5873 Advanced Indoor Environmental Systems Recent Publications Moallem, E., Cremaschi L., Fisher D.E and T. Hong. (2017) Effects of frost growth on louvered folded fins of microchannel heat exchangers on the time-dependent air side convective heat transfer coefficient. Experimental Thermal and Fluid Science, 88, 326-335. Gall, John, Daniel E. Fisher, Gabrielle Corti, Stefano Marelli, Lorenzo Cremaschi. 2015. Modeling of R-410A variable capacity compressor with Modelica and experimental validation, International Journal of Refrigeration, v 58, p 90-109 Xiong, Zeyu., D.E. Fisher, J.D. Spitler 2015. Development and Validation of a Slinky Ground Heat Exchanger Model. Applied Energy141, 57-69 Lee, Edwin S., D.E. Fisher, J.D. Spitler 2013. Efficient Horizontal Ground Heat Exchanger Simulation with Zone Heat Balance Integration. HVAC&R Research 19:3, 307-323 Moallem Ehsan, T. Hong, L. Cremaschi, D.E. Fisher. 2013. Experimental Investigation of Adverse Effect of Frost Formation on Microchannel Evaporators, Part 1: Effect of fin Geometry and Environmental Effects. International Journal of Refrigeration 36:1762-1775 https://betsrg.org/event-photos daily 0.75 2024-08-20 https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1618497259178-6XJGK9GR6YAVBQL5L519/20140301_Trade-151_012-2.jpg Event Photos https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1607694644871-IC85FNH781UNZSZEGHDR/Aro+Ha_0428.jpg Event Photos https://betsrg.org/ground-loop-heat-exchanger-design-software daily 0.75 2023-10-02 https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/3b4f47fb-42ea-4094-9b7e-3bf720ed4e7d/tutorial.png Ground Loop Heat Exchanger Design Software - Ground Loop Heat Exchanger Design Software GLHEPRO for Windows GLHEPRO is used for designing ground loop heat exchangers for use with ground source heat pump systems. It is sold by the International Ground Source Heat Pump Association. VERSION 5.0 NOW AVAILABLE - New Features https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/8ee0cabf-6353-44b2-bd8c-45e2790630cd/borehole.png Ground Loop Heat Exchanger Design Software - Regular borehole field selection https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/7418b0d8-84aa-4395-959b-b387a960158a/bhfield.png Ground Loop Heat Exchanger Design Software - Large rectangular field selection https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/cc562602-7e8a-4c61-84d5-e8926ada2a8c/heatpump.png Ground Loop Heat Exchanger Design Software - Heat pumps are selected from a database of heat pumps using this screen https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/f27cfe60-6122-4ca2-8b38-902e07e154a2/13-versions-of-GLHEPRO-5.png Ground Loop Heat Exchanger Design Software - Versions Available GLHEPRO is now available in three different versions: GLHEPRO 5.0-30 can size user-specified configurations of up to 30 vertical or inclined boreholes. Custom g-functions are generated using a finite line source model. It can also size horizontal ground heat exchangers – both straight and slinky type heat exchangers. It can perform hourly simulations of GSHP systems with user-specified configurations of up to 30 boreholes or of GSHP systems with standing column wells. GLHEPRO 5.0-120 does everything that GLHEPRO 5.0-30 can do, plus it contains a library of 407 pre-defined borehole configurations. GLHEPRO 5.0-400+ does everything that GLHEPRO 5.0-120 can do, plus it can size large rectangular borefields with vertical boreholes, up to 990 boreholes. https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/545bf9ce-1326-411d-977e-2f23e73081da/glhepro_validation.png Ground Loop Heat Exchanger Design Software - Validation GLHEPro has been validated against measured data from working ground heat exchangers and compared with the ASHRAE Handbook Method. Applying the measured loads on the ground heat exchanger as the design conditions and setting the actual peak temperatures as the user-specified design temperatures, the design methods should give us back the actual design. GLHEPRO gave sizes within 5% of actual; the ASHRAE Handbook method gave designs substantially different from actual. “Why” is explained in the paper cited below that details the comparison. Cullin, J.R., J.D. Spitler, C. Montagud, F. Ruiz-Calvo, S.J. Rees, S.S. Naicker, P. Konečný, and L.E. Southard. 2015. Validation of Vertical Ground Heat Exchanger Design Methodologies. Science and Technology for the Built Environment. 21(2):137-149. https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1618497259178-6XJGK9GR6YAVBQL5L519/20140301_Trade-151_012-2.jpg Ground Loop Heat Exchanger Design Software https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1607694583486-2PQT0LQ193RL7MCB6DX4/20140228_Trade+151_0046.jpg Ground Loop Heat Exchanger Design Software https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1607694644871-IC85FNH781UNZSZEGHDR/Aro+Ha_0428.jpg Ground Loop Heat Exchanger Design Software https://betsrg.org/ordering-shipping daily 0.75 2022-06-23 https://betsrg.org/support-faqs daily 0.75 2022-06-23 https://betsrg.org/new-features daily 0.75 2022-06-23 https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/6474b2b9-1207-4ff1-aa02-81564df851cf/01-simulation-sizing-options.png New Features - New features for Version 5.0 GLHEPro Version 5.0 was released in the April of 2016 and has many new features, incorporating many years of research. This research has resulted in nearly 100 peer-reviewed papers and book chapters and has also led to many new features in GLHEPro. GLHEPro Version 5.0 has significantly expanded simulation and sizing options. Significant new features include: User-specified borehole configurations for up to 30 boreholes – these can be vertical or inclined and irregularly placed. (Page 2.) Horizontal ground heat exchangers. (Page 3) Hourly simulations of GSHP systems. (Page 3.) Worldwide database of time- and depth-varying ground temperatures. (Page 4.) Hourly simulations of standing column wells. More detailed borehole model can account for short circuiting resistance and groundwater-filled boreholes. Improved flexibility in the hybrid system sizing feature. https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/1655955120769-ZIDQS10K9WZ0N3S8B4RE/02-boreholes-top-view.png New Features - Make it stand out 12 boreholes arranged in a circle inclined outwards at 30°, top view. https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/1655955226494-58AZOHYTJKN7BKS4VYW9/05-horizontally-drilled-borehole.png New Features - Make it stand out A horizontally-drilled borehole. https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/1655955196797-WFMNY8QRM2851IYWIYW4/04-boreholes-different-depths.png New Features - Make it stand out Two boreholes with significantly different depths. https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/1655955140960-B3R1OFQC3LU4GPM02079/03-boreholes-front-view.png New Features - Make it stand out 12 boreholes arranged in a circle inclined outwards at 30°, front view. https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/388d1f48-266d-4af4-b1f5-123fce2bf60d/06-two-tube-horiz-ghe.png New Features - Make it stand out Two-tube horizontal ground heat exchanger. https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/76fcadc4-8ccc-4e78-b18b-f7bb8a7ec89e/08-HP-Inlet-Fluid-Temperature.png New Features - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/ee607871-fa56-4a6e-88c1-f618e40a1056/07-slinky-heat-exchanger.png New Features - Make it stand out Slinky heat exchanger. https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/5c8041a6-d4cd-4bb0-b381-9a4277fbbb38/10-depth-vs-temp-March-14.png New Features Depth vs. Temperature on March 14th https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/3243676f-7ab9-4620-aa2d-3bb45e676304/11-annual-temp-profile-depth-30-ft.png New Features - Make it stand out Annual Temperature Profile at a depth of 30 ft. https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/d19ed4b2-c4fd-4bac-a847-f60ab38683e4/09-select-ground-temp-by.png New Features - A new undisturbed ground temperature database has temperature profiles for 4,112 global locations! https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/0fdc7d22-ebb4-49e3-abd7-c142780825bf/12-sized-actual-lib-g-func-FPFLS.png New Features - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/cd24aa2e-8c93-4e43-8a64-5d62333b5f72/v4-2-DoubleU.jpeg New Features - Addition of double U-tube https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/766107ca-7324-4288-8d84-4f4124017cda/v4-1-FluidDlg.jpeg New Features - Revamped fluid property routines. The working fluid can now be specified in terms of composition and concentration. Revamped fluid property routines. The working fluid can now be specified in terms of composition and concentration. https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/53ebc860-9156-4ab1-a6f3-244439279a2f/v4-3-Concentric.jpeg New Features - Addition of concentric tube heat exchangers Addition of concentric tube heat exchangers https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/e344632d-67f4-4201-b753-3603f30c0acd/v4-5-IntTemps.jpeg New Features - International ground temperatures are available for several locations, and users may enter additional locations. International ground temperatures are available for several locations, and users may enter additional locations. https://images.squarespace-cdn.com/content/v1/61718e5c0ba09e66de8b077e/56aac850-d5ea-4210-bd6c-e5f3bf1dec94/v4-4-OutputPrefs.jpeg New Features - Marked improvement of output reporting. Users can specify what information is reported, and have the option of creating a Microsoft Excel-compatible .CSV file. Marked improvement of output reporting. Users can specify what information is reported, and have the option of creating a Microsoft Excel-compatible .CSV file. https://betsrg.org/tutorial-videos daily 0.75 2022-06-23 https://betsrg.org/available-positions daily 0.75 2023-01-17 https://betsrg.org/ground-source-heat-pump-systems daily 0.75 2024-09-12 https://betsrg.org/unitary-equipment daily 0.75 2022-11-18 https://betsrg.org/compressors daily 0.75 2022-11-21 https://betsrg.org/building-heating-and-cooling-load-calculations daily 0.75 2022-11-18 https://betsrg.org/bridge-deck-and-pavement-de-icing daily 0.75 2022-11-21 https://betsrg.org/whole-building-energy-simulation daily 0.75 2022-11-21