Using those numbers on gld, with a 10 deep 24 wide trench with one loop at the bottom of 1 sdr11, i. Looplink pro handles design for vertically and horizontally bored ground loop designs as well as hybrid systems. The thermal state of the ground is determined by prior heat additionextractions rates and durations. It is currently in an open loop configuration, and am planning to convert to horizontal closed loop in ohio. Download ground loop design premier now and view 99% of the program modules and interface. Regardless of what someone may claim, the laws of physics still supercede advertising claims. The horizontal loop vertical pattern stays relatively constant, only decreasing in ground loss as height is increased. A heating dominant loop on the other hand, sucking heat out of the ground, actually attracts moisture.
Take a look at how geoexcel geothermal design software stacks up to the leading alternative. The unbiased physics based models are designed and optimized for accurate dependable results that reflect years of engineering and design experience. It is on a 7 acre lot so horizontal was planned, ground is damp clay at 10, located in saskatoon, saskatchewan. Note that all the work shown here can be scaled to 5 mhz 60 meters or 7 mhz 40 meters for nvis work with a better signal. One approach for a horizontal loop is buried in trenches at a depth of 68 feet or in a larger pit at a depth of about 10 ft.
Ground loop design gld is an integrated suite of powerful, flexible and customizable tools for designing commercial and residential closed loop ground source heat pump systems. Geothermal loop design for gshp in a geothermal loop design vertical horizontal hybrid geothermal design software ground loop design ground source heat pumps utilizes water to cool and heat the refrigerant instead of air. Geothermal loop design for gshp in a geothermal loop designverticalhorizontalhybrid geothermal design software ground loop design ground source heat pumps utilizes water to cool and heat the refrigerant instead of air. Geothermal hvac software ground loop design, load calculation.
The build design parameters are then used in software that uses your geographic weather data to calculate the average coldest day. 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. The capacity of the ground to absorb or provide heat is a transient heat transfer problem. Reading design guide from the manufacturer of our geothermal heat pump.
By using thermallyenhanced grout, designers can increase the thermal conductivity of the loop, allowing it to extract more btus from the ground faster, meaning less feet of. Wrightsoft is the leading provider of hvac load calculation, design and sales tools to the hvac contractor. Alternative hvac directory geothermal hvac software geothermal hvac software online adtek software. Geothermal horizontal ground loop hvac contractor talk. Ground loop design gld is a software tool for designing and. The ground itself is not a perfect heat sinksource because the energy added to the ground by the loop can change its temperature over time. Gld works with all versions of windows including windows 10 32b or 64b and can also be emulated on a mac with bootcamp or parallels download a free evaluation now.
If you arent going to learn the physics such as the effect of increased soil contact area then run some software that will do it for you. Bottom line, they got 20% methanol in their closed horizontal ground loop. Obviously, the buildings design loads, the ground s soilrock thermal conductivity and mean ground temperature play significant roles in determining design lengths see. Sizing geothermal heat pump system ground loop space in. With gld, you have total control to customize and modify vertical, horizontal and. Horizontal hf antennas benefit from nearby ground gain. Perfecting residential geothermal hvac design, installation. Design and economic analysis of a geothermal vertical coupled. Ground loop design best directory building energy software tools. Vertical and horizontal ground heat exchanger modeling. Mar 24, 2016 rightloop provides quick, easy and accurate geothermal loop designs that comply with all industry standards. This will provide a net gain over the antenna in freespace.
Horizontal loops are installed in areas where the soil conditions allow for economical excavation. Putting 1 14 utubes in the ground requires a greater supply of pumping power to get turbulent flow. From there hell be able to calculate the right size system. If you want the best heat exchange per foot turbulent flow is the ticket. Ground loop design gld is the leading software suite for designing. Geothermal hvac software geothermal hvac software online adtek software. Geothermal design software patented vertical, horizontal, hybrid. Patented residential and commercial geothermal design software to simplify your effort and improve accuracy in ground loop, energy cost analysis, hybrid. In geothermal designs, dont succumb to rules of thumb.
Vertical closed loop contractor means a person qualified to engage in the business of constructing, installing, repairing, or decommissioning vcls or other heat exchange wells. Feb 15, 2016 better communication between the loop contractor or driller and the heating and cooling contractor could help improve the loop field design, noted urlaub. Ground source heat pump horizontal array ground works. Basic design considerations for geothermal heat pump. Then, one day, egg received a call from the homeowner, who wanted to know why his lawn was dead. Download the required product from the developers site for free safely and easily using the official link provided by the developer of ground loop design below. Vertical closed loop contractor does not include an employee of a vertical closed loop contractor or a contractor who installs horizontal closed loops. Our website provides a free download of ground loop design 7.
Jul 25, 20 ground source heat pump horizontal array ground works. Vertical closed loop geothermal design software created by michael philippe et al will be used in our design calculations 4. The ground loop is a key part of the geothermal system and it must be properly designed and installed. Reynolds number with the antifreeze typeconcentration of your choice, if any. Here are a few tips on on vertical and slinky bore design. Ground loop pipe size greenbuildingtalk green building.
Gld is windowsbased and runs on macintosh computers running parallels or bootcamp. Your earth loop must be matched to the home, and the geothermal heat pump, that it is coupled to. Gld is the leading software suite for geothermal heat pump and ground heat exchanger system design. Is the slinky realy the answer to go or should we trench for long runs to be sure. The heat exchanger may be composed of any number of boreholes arranged in various configurations. The peak wwf i was looking at had 38% methanol and 62% water as per the msds sheet. Ground loop design gld 2016 edition is the leading software suite for.
The package enables designers to determine the correct lengths of bore or pipe required for commercial vertical, horizontal andor pond heat excahngers, optimize the piping configuration for balanced flow and optimal heat transfer, and calculate the annual and lifetime. What is the difference between horizontal and vertical geothermal. Thus the objective was to provide an open source, nonproprietary, freely available design tool that would allow any installer to design a gshp system up to 45kw that would deliver. I have measured cooling loops at 123 deg f a heating dominant loop on the other hand, sucking heat out of the ground, actually attracts moisture. A geothermal heat pumps earth loop installation is not just a matter of burying some pipes and hooking these pipes to your geothermal heat pump. In the lots limited by space, a vertical loop may be installed for the geothermal loops.
There are all sorts of systems that will deliver required btus but you are running equations that are not emphasizing the heat exchange side of loop design. Also, other programs exists and all have their advantages. Fundamentals of commercial geothermal wellfield design. My first geo job and am getting mislet by many subs. 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. Geothermal systems that work by design, not by accident ground loop design software gldtm is the worlds leading commercial ghx software design tool with design professionals in more than 60 countries using it in a dozen different languages to design english and metric based systems. Horizontal pipe loops cost less than vertical bores and they have mixed advantages. Gld works with all versions of windows including windows 10 32b or 64b and can also be emulated on a mac with bootcamp or parallels download a. Geoexcel geothermal design software is designed, built and maintained by dandelion energy.
Large, horizontal, loop antennas fed via balanced or coaxial. In a geothermal loop designverticalhorizontalhybrid geothermal design software ground loop design ground source heat pumps utilizes water to cool and. A horizontal loop system allows loop installation with trench sizes based on the size of the home lot. Size ground loops for residential geothermal systems. While glhepro may be used for residential system design, it is aimed at commercial systems. The plans to the loop field are easy to understand but applying the technology to the design is quite complicated. For residential applications bosch heating and cooling. There are several designs utilizing different installation techniques.
Less stable underground temperatures, especially at loop, but the horizontal would be much cheaper for me since we have the epuipment to use. Development of new ground loop sizing tools for domestic gshp. The software will then tell you the minimal size of a heater btu or kw you will need to maintain the comfort level in the house based on the average coldest day you can expect. Tools to design and support your ground source heat pump installation. The actual developer of the software is gaia geothermal. Based on methods developed by the osu design manual for the general method, ashrae. Be confident in the performance of the ground heat exchangers you design, whether they are vertical borehole fields, horizontal trenches, pits, slinkies or horizontal directional drilling, or surface water heat exchangers. The hvac contractor sells and sizes the job and then usually tells the ground loop subcontractor something like, i need a 5ton slinky loop installed at this address. Careful design is necessary to ensure that there is sufficient capacity available for the geothermal heat pump to operate properly. Used in more than 70 countries, gld is the tool of choice for innovative engineering, design and consulting firms. For a responsible design, contact the geoguy for a life long performing loop. Lack of a mathmatically derived, engineering approach here can render a large investment in ground loop and hvac equipment very unsatisfactory, from both a financial and comfort perspective. Once you have established those constraints, loop design is a matter of finding an acceptable tradeoff of material cost vs.
Ground loop design gld is the leading software suite for designing geothermal ground source heat pump systems. Design the loop to meet the rated capacity or a targeted entering water temperature. The thinking that slinky loops will let you get the same or more geo capacity from a smaller loop footprint is dead wrong. Ground loop heat exchanger design software building. Loop design theory loop types a ground loop is a heat exchanger that either extracts or adds heat to the ground. 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. Design of the ground coupling sizing of the ground coupling for a heat pump is different than sizing conventional equipment. The horizontal ground loop covered about 2 acres, and for three years the system seemed to work fine. Taking up more land than any other loop design, a horizontal loop can be installed when space permits it. Right loop provides quick, easy and accurate geothermal loop designs that comply with all industry standards. The unit includes a comprehensive data analysis software suite that enables users to calculate conductivity, estimate diffusivity and share professional, color reports with coworkers and clients.
Ground loop installation can be made even easier and more convenient if the builder or designer makes specific plans for geothermal systems. It turned out that the loop had warmed up to the point where it had actually burned the grass until it turned white, said egg. So, the first step in sizing an earth loop is having a correct heat lossgain calculation done. Since sizing a geothermal heat pump is a intricate process youll need to contact a qualified geothermal heat pump installer. The principles of this interaction are common in all loop types and will be discussed here. Glhepro was developed as an aid in the design of vertical boreholetype ground loop heat exchangers used in geothermal heat pump systems. Ground loop tradeoff the ground loop is the most expensive part of the geothermal installation, and reducing its length will decrease installed costs substantially. The ground loop consists of a plastic pipe heat exchanger. In geothermal designs, dont succumb to rules of thumb 2016. Windowsbased revolutionary geothermal hvac software design package. Rightloop uses worksheets for accurate geothermal loop design for a variety of parameters and system types. Our builtin antivirus checked this download and rated it as 100% safe.
Ground loop design gld is a software tool for designing and optimizing ground source heat pump systems. I am planning on a 5 ton unit and was considering using the same idea that we used on my brothers for the ground loop, 5 trenches 250 feet long, but only 1. I would have only needed about 3738 gallons purchased at autozone, etc, another reason i asked the question. In using the software, we will fill in all of the input parameters and allow.
Trenches can be anywhere up to 150ft long depending on the pipe configuration. The size of the system will dictate the size of the loop field. Design and economic analysis of a geothermal vertical. Geothermal design software patented vertical, horizontal. The hvac contractor sells and sizes the job and then usually tells the groundloop subcontractor something like, i need a 5ton slinky loop installed at this address. Better communication between the loop contractor or driller and the heating and cooling contractor could help improve the loop field design, noted urlaub. Here are schematic diagrams of, horizontal loop and vertical loop, there are courses that teach how to estimate and design an efficient systems, international ground source heat pump association has a course called, igshpa training. Obviously, the buildings design loads, the grounds soilrock thermal conductivity and mean ground temperature play significant roles in determining design lengths see. While significant imbalance of heat extractionheat rejection. Load calculations and ground loop design and sizing for your geothermal system. Gld is the choice of professionals in over 62 countries. Horizontal loops require a lot more space than you realize.
Geothermal loop design and installation louisville. Contains information and software to assist in the design of large horizontal loop antennas, including feedlines, choke baluns, and antennatuners. Development of new ground loop sizing tools for domestic. Each zone group can have one active ghex and one active hybrid system but can have as many inactive variations as you would like. On one page in the guide, they reprint a graph illustrating that deeper in the ground 12 feet down the soil temperature swing is more constant throughout the year. Large, horizontal loop antennas fed via balanced or. Regardless of the software program used, designers need to have a fundamental understanding of various factors affecting vhe design lengths. Software produced by ashrae has a high level of accuracy when compared with other design calculations. Software versions available three versions of ground loop design are available. Geothermal hvac software and computer programs online. An installer will start with an analysis of the heating and cooling demands of your home. Downloading ground loop design thank you for using our software library.