The build design parameters are then used in software that uses your geographic weather data to calculate the average coldest day. There are several wellfield design software programs that assist designers in calculating the total required vhe lengths such as ground loop. You can easily couple heat transport with the velocity field. Chemical models for optimizing geothermal energy production, idaho national laboratory login required software for directuse applications, geoheat center geothermal technology analysis models and tools, national renewable energy laboratory. Fundamentals of commercial geothermal wellfield design. Design of geothermal systems for commercial and institutional buildings, which is recognized as the primary reference for nonresidential groundsource heat pump gshp installations. Geothermal bore field software hvacr engineering engtips. The heat exchanger may be composed of any number of boreholes arranged in various configurations. Our design services include geothermal, mechanical, electrical, plumbing, fire protection, commissioning and energy modeling services. This workshop is designed for anyone looking for an overview of thermal and geothermal well design and integrity. Geo hourly geothermal design software takes load calculations through to equipment sizing. Use that data to design your own standing column well system using heatsprings design workbook you get access to a standing column well simulator and model performance of.
The ground loop is a key part of the geothermal system and it must be properly designed and installed. It is currently in an open loop configuration, and am planning to convert to horizontal closed loop in ohio. Im looking at 3 different geothermal bore field sizing software s. Flow centers or ground loop pumps there are basically 3 types of flow centres, the purpose of which is to pump the fluid and to provide valves to allow flushing of the system to remove debris and air from the ground loop pipes. For a responsible design, contact the geoguy for a life long performing loop. It is a companion guide to mcquays catalog 3301, water source heat pump design manual, which discusses boilertower heat pump design. Glhepro was developed as an aid in the design of vertical boreholetype ground loop heat exchangers used in geothermal heat pump systems. Used in more than 70 countries, gld is the tool of choice for innovative engineering, design and consulting firms. Rightloop provides quick, easy and accurate geothermal loop designs that comply with all industry standards. In addition, our wellhead systems can be used on thermally enhanced steam injection recovery, waste disposal, and hotwater wells. The development study of karahatalaga bodas geothermal. While glhepro may be used for residential system design, it is aimed at commercial systems.
Leapfrogs 3d modelling and visualisation brings clarity and understanding to the geothermal development life cycle, reducing risk from. The focus of the detailed chapters covering various aspects of the process casing design, cementing, logging and instrumentation, etc is on techniques and hardware that have proven successful in geothermal reservoirs around the world. Modeling ground source heat pump systems and equipment in. Heatspring magazine 4step guide to designing geothermal. The thinking that slinky loops will let you get the same or more geo capacity from a smaller loop footprint is dead wrong. She specializes in modeling mechanical systems and frequently. The versatility of gld allows for us to maximize loop field performance. A tool for drillhole design and well targeting has recently been added to leapfrog geothermal. Geothermal hvac software ground loop design, load calculation. This web page focuses on computer programs for geothermal hvac systems. Best practices for geothermal vertical closedloop installations groundwater division well construction unit april 2010. If you were to apply the laws of thermodynamics to ground loop design, it would be clear that there is a limited amount of energy available from a given area of earth, and a limited amount of energy that the earth can absorb. Glhepro was developed as an aid in the design of vertical boreholetype ground loop heat exchangers used in geothermal heat.
Companies which use fluidflow to model geothermal piping systems include philippine geothermal production company, mtl consulting engineers in new zealand and efla consulting engineers in. Now with gld2014 you can input the length and width of the field and gld will calculate how the horizontal system will perform. A poorly designed geothermal wellfield can lead to poor system performance, excessive installation costs, and unnecessary liability. At the end of this workshop, students will gain an improved understandings and appreciation for. Fundamentals of commercial geothermal wellfield design geovault. Whether you need a leed certified project, or a sustainable design, meps master planning can be seen throughout campuses and projects across the country. The first exploration program of the ktb geothermal field was conducted in december 1994 by karaha bodas company kbc.
This handbook is a description of the complex process that comprises drilling a geothermal well. The size of the system will dictate the size of the loop field. Gld software windowsbased revolutionary geothermal. Grouting for vertical geothermal heat pump systems, engineering design and field. Fluidflow software is used to design and model geothermal twophase flow systems with separator stations, injection systems as well as cooling water systems. The intent of this design guide is to outline procedures and design techniques necessary to optimize the.
If the loop field is large, temperatures in the centre may be low and impact the overall average temperature. In addition, the geothermal system and well field could accommodate yet another 1,000 wells if epic decides to develop a campus 3 on the site. Our new piping system designer is unique to the geothermal industry. Geothermal exploration process and production plants oil. Closed loop systems the following presentation is a summary of material with the appropriate unit conversions presented in groundsource heat pumps design of geothermal systems for commercial and institutional buildings by. Jan 17, 2018 this wraps up this basic introduction and overview of geothermal resources. Megan joined ies in 20 to provide training and technical support to north american software users. They constitute in deed a too vast domain, actually the substance of numerous books. This reference page has an index that will guide you directly to geothermal software and programs online. It interfaces with industry leading reservoir engineering and geophysical software for rapid interpretation of geothermal reservoirs. Geothermal wells are frequently like oil or gas wells from the point of view of pressure transient testing, and therefore their buildup and drawdown tests are often interpreted using the same software used for oil or gas well tests. Ground loop heat exchanger design software building.
Field of 1,576 geo wells heats and cools epic headquarters. We are a geothermal drilling and loop field contractor specializing in turnkey installation of the underground closed loop piping for geothermal heatingcooling systems. Nov 15, 2016 geothermal heat pumps, also referred to as ground source heat pumps or geoexchange, refer to systems that use the ground, groundwater, or surface water as a heat source or sink. Abandon preconceived notions and carefully deliver properly designed loop systems. Introduction logging and testing of geothermal wells are essential segments of any field exploration and development strategy addressing relevant reservoir engineering and resource management issues.
The plans to the loop field are easy to understand but applying the technology to the design is quite complicated. Specific to their configuration, these systems are referred to as groundcoupled heat pumps, groundwater heat pumps, and surface water heat pumps, respectively. As one of the premier geothermal research and training centres in the world, the geothermal institute has been providing research and development, testing and laboratory services, commercial and consultancy services, as well as education and training for the new zealand and international geothermal industries, since 1978. Looplink rlc enables you to design loopfields for multizone, multiheat pump. An installer will start with an analysis of the heating and cooling demands of your home.
Geothermal heat pump system means a mechanical system for space heating or cooling that relies on the transfer of thermal energy between the earth and a heat transfer fluid and consists of a heat pump, a heat exchange well, and a heat distribution network. Modeling of usage of air injection well in a geothermal system. This will be considered when geoexchange experts are evaluating design options. Pumps design of geothermal systems for commercial and institutional buildings by stephen p. Well fields must be designed to provide necessary heat sourceheat sink capacity required by the systems heat pumps, and to allow the earth to adequately dissipate surplus rejected heat or replenish the effects of absorbed energy over an annual cycle. Tools to design and support your ground source heat pump installation. Ive used it on residential projects as well as studies for big commercial projects. Once appropriate equipment is selected for the building based on its heating and cooling loads, the gshp design software calculates the depth of the borehole based on geology, bore diameter, grout thermal conductivity, and configuration of the borefield design corresponding to the equipment selected for the building. Modeling geothermal wlhps utilizing ergon enroll in course off original price.
Looplink pro is simple, powerful, webbased ground loop design software commercial designers. These same studies can be used to size homes for geothermal heating and cooling systems. I would expect some discrepancy between different software, but in this case the equest simulation is using only about 50% of the required. Most hvac contractors already conduct heat loss studies on customers homes. Gld is the leading software suite for geothermal heat. Ground loop design is the choice of professionals in over 60 countries and is the worlds leading software suite for commercial geothermal heat pump and ground heat exchanger system design. Geo hourly was created as a genuine simple design tool that is easy to use, extremely fast, and reliable.
Looplink pro and looplink rlc are purpose built to make the complicated business of ground loop design fast, easy and accurate. Trace 700 was not designed to size wellfields for ground source heat pumps but there are several programs that can perform these. Once the information from the campus loads and the test well are known, they are used in geothermal heatexchanger groundloop design software to model the depth. Data from these types of tests typically are used in support of numerical modeling. Use that data to design your own standing column well system using heatsprings design workbook you get access to a standing column well simulator and model performance of the system you design. At geothermal science, we provide design and analysis of reservoir tests, such as field capacity testing, pressure interference testing, and tracer testing. The data gained from the test well will determine the thermal conductivity, diffusivity, ground temperature, and geological conditions of the site where the well field will be located. Heat exchange well means a well or excavation for the purpose of utilizing the geothermal. This easy to use software package allows a quick design and proposal to be generated for any residential or light commercial project.
Geolink design studio combines geothermal engineering design with annual operating cost comparison and sales proposal software. Location of the production zone determines the wells overall length, and the required flow rate determines diameter at the bottom of the hole the wells profile above the production zone is then set by iteration of the successively larger casing strings required by drilling or. Hvac residential market residential geothermal heat pumps. Discussion in vertical and horizontal loops started by milkweed, feb 17, 2016. Best practices for geothermal vertical closedloop installations. We kicked off a twopart series on the fundamentals and design of high and low temperature geothermal well and pumping systems last month. Each vcl consists of a borehole constructed with a conventional well drilling. It is a companion guide to mcquays catalog 3301, water source heat pump design manual, which. We work with mechanical contractors that needs well field design or a hvac contractor that needs the heat exchanger installed in a residential or commercial application. Geothermal heating and cooling is a complete revision of groundsource heat pumps. From there hell be able to calculate the right size system. Our geothermal wellhead systems provide fluid control for virtually any type of geothermal reservoir, including vapor dominated, liquid dominated, dry hot rock, and geopressured reservoirs. This software uses its knowledge of the heat pump performance to generate the required wellfield size and depth. Our comprehensive range of services and technologies enable costeffective geothermal development and improved success rates through increased drilling efficiency, improved logistics, streamlined workflows, and accurate well and field production estimates of geothermal wells.
The 8760 hourly integration applies your detailed heat pump operation to the building usage for the climate site location you select. The hvac system will have over 60 geothermal heat pumps and 144 vertical wells. Here you can find software programs that model geothermal systems and economics, as well as data related to geothermal technology and energy to assist with calculation and model construction. Modeling geothermal processes with comsol software. It has free tools and articles on geothermal design and installation and sales and marketing best practices. It is standard practice to size a loop field for a minimum entering water temperature ewt of. This month concludes with an overview on the design of low temperature geothermal wells and well pumps. I have seen gld used before, but was wondering if anyone had a preference between the three options. Key factors and considerations involved in the design, construction and integrity management of thermal wells. Instructions are available within the application on. Kavanaugh and kevin rafferty, and published by the american society of heating. Modeling geothermal wlhps utilizing ergon ies lunchnlearn. The most important part of any geothermal installation is the design of the system, and that begins with an accurate. The result is 120 well fields of 250 ft bore depth or 80 well fields of 350 ft bore depth.
This will require a space typically more than twice the square footage of the building depending on the load and the ground conditions. Costs and design considerations cost geothermal or ground source heat pumps gshps are more costly to install initially than regular heat pumps but save money in operating and. Load calculations and ground loop design and sizing for your geothermal. Abstract when a high temperature geothermal well is completed, there is a risk that the well fails on the first heat up or that there is a delayed failure due to the formation environment like the presence of corrosive fluids. Get real data about how standing column well systems are designed and how they really perform. Ground loop design gld is the leading software suite for designing geothermal ground source heat pump systems. Geothermal system design is complicated enough without having to master complex software. Application guide ag 31008 3 introduction this application guide is written to assist the designer in geothermal heat pump design.
In many cases, designing the geothermal wellfield causes the main difficulty for the designer. This geothermal field is located on a ridge trending northsouth to the north of mount galunggung, west java, indonesia fig. Careful design is necessary to ensure that there is sufficient capacity available for the geothermal heat pump to operate properly. However, geothermal wells more often show the effect of fractures. Geothermal solutions provides geothermal products, custom system designs and earth loop installations outside the building. Looplink pro gets out of your way with an interface that is as simple to use as a website but more powerful than any other commercial geothermal design software available. Since sizing a geothermal heat pump is a intricate process youll need to contact a qualified geothermal heat pump installer. Reading design guide from the manufacturer of our geothermal heat pump. In geothermal designs, dont succumb to rules of thumb 2016.
There are several wellfield design software programs that assist designers in calculating the total required vhe lengths such as ground loop design that can be downloaded. Geoconnections is the geothermal industrys leading software as a service saas company. Heatspring instructor albert koenig discusses the steps to basic geothermal standing column well scw design unlike closed loop geothermal installations, open loop systems, in particular, standing column well scw, require more diligence from the designer than just the well field. Gld is the leading software suite for geothermal heat pump and ground heat exchanger system design. The software will then tell you the minimal size of a heater btu or kw you will need to maintain the comfort level in. Similar in function to the vertical fixed length mode, the new fixed area mode for horizontal systems opens up a wide new field of geothermal design. Patented residential and commercial geothermal design software to simplify your effort and improve accuracy in ground loop design, energy cost analysis, hybrid design, and solar design. This new work takes advantage of the many lessons learned since the time of the. Design and modeling of a well field is not included in this session.
Leapfrog geothermal is a workflowbased 3d geological modelling tool. Windowsbased revolutionary geothermal hvac software design package gld software. Geothermal well logging and testing by pierre ungemach 1. Apr 29, 2010 this software uses its knowledge of the heat pump performance to generate the required well field size and depth.
The karahatalaga bodas ktb geothermal field was declared commercially operated in april 2018 with a capacity of 30 mw. Gld is the choice of professionals in over 62 countries. In geothermal designs, dont succumb to rules of thumb. Gld software windowsbased revolutionary geothermal hvac. Dont do this the geo guy geothermal consulting, design. Geothermal heat pumps wbdg whole building design guide. Feb 15, 2016 home in geothermal designs, dont succumb to rules of thumb. Glhepro is used for designing ground loop heat exchangers for use with. In addition to matching a heat exchanger to a building load, the gld grid builder allows the designer to specify an irregularly shaped loopfield. As one of the premier geothermal research and training centres in the world, the geothermal institute has been providing research and development, testing and laboratory services, commercial and consultancy services, as well as education and training for the new zealand and. Although expensive, once installed, the well field should last the life of the building. In some situations, the coupling must be applied bidirectionally. A geothermal heat pump system is a refrigeration device that utilizes a ground loop and.
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