Geothermal Heat Pump Basics
If the basic units of geothermal heating and cooling are new to you, please see here a brief description of how it works.
Simplistic ground temperature in the Continental United States is more or less stable and geothermal heat pumps will use such steady temperatures to regulate the house climate. Nut there are some Important facts about geothermal heating you must know.
There are enormous advantages of such a program. While construction costs relative to other cooling and heating technologies are higher, geothermal heating systems will save 40% to 80% in long-term energy costs.
The heating efficiency of soil-based and water-based heat pumps is indicated by their output factor (COP), which is the heat ratio provided by Btu per Btu of the energy source. Its cooling output is seen by the energy efficiency ratio (EER) of the heat removed (in Btu per hour) to the power needed (in watts) to operate the device.
You’re likely to see several efficiency ratings not common to the average joe–SEER, EER, and COP while you search for a geothermal heating system. Luckily, if you learn the basics, these scores are easy to understand.
The SEER value measures the proportion of the cooling capacity of the device to the amount of energy through which it absorbs. Put it simply, the more efficient the unit is, the higher the SEER rate.
You’ll typically see units of EER and COP instead of a standard SEER ranking during your shopping visit. Don’t let you be scared about such numbers! While the particulars of measuring the EER and COP are beyond the scope of this article (don’t worry. Such scores would not be needed on your own. They are often provided by the manufacturer), you can use them conveniently for determining the SEER for any particular device.
Types of Geothermal Systems
Even if geothermal heating pumps construct a very special niche in the HVAC market, other options do remain. Your choosing, however, would depend on your house.
The following are three main types of geothermal systems. For additional information on each system type.
Closed loop systems utilize tube length, typically acrylic, which is pumped with a deep underground covered antifreeze. The heat generated from the loop is spurred by a special device named a heat exchanger into the cooler in the overground structure that controls your home’s temperature. Closed loop structures can be mounted horizontally, vertically, in pond or in lake in a variety of configurations.
Open loop systems use surface or well water for temperature control instead of antifreeze. The water is pumped via the system and discharged in a different pipe, using the same exchanger as it is in a closed-loop system.
Currently possible are hybrid solutions utilizing a mix of geothermal energy. Because such programs differ from deployment to implementation, a structured definition is not possible.
Installing Geothermal Heat Pumps
The question now is: ow to install geothermal heating system? To correctly install piping a GHP system installation is not a do – it-yourself job, professional techniques and tools are required. Ask the nearest utility provider to find a suitable contractor, Certified and professional installers will be needed.
A closed or open loop system is used as the ground thermal exchanger in a GHP network. The closest circle in general is the high-density, horizontally submerged polyethylene pipe at 4 to 6 feet vertically or uprightly at 100 to 400 feet depth. Such pipes are lined with a water / freeze solution that functions like a heat exchanger, which is environmentally safe. In winter, heat is collected and carried into the building by liquid from the pipes. During the summer, the mechanism reverses and brings heat to the colder ground from the house.
The majority of geothermal heat pumps are covered automatically by insurance policies of the homeowner. In ensure that you do so, call the insurance company. Because your service provider is protecting your system.
Evaluating Your Site
The high surface temperature underground is relatively constant, and geothermal heat pumps (GHPs) can be used virtually anywhere effectively. Your local system installer / developer can also determine the best system of land loop for your site due to geographical, hydrological and spatial characteristics of your property.
In constructing a ground loop, considerations such as the structure of the land and the rock (which that influence the rate of thermal transfer) must be addressed. For eg, soil with good heat transfer properties needs lower piping than soil with low heat transmitting properties to capture a certain amount of heat. The available soil volume often relates to the system design–system suppliers can install vertical ground loops, rather than horizontal loops in places where the hard rock or soil is too shallow to trench.
The quality of soil or superficial water often allows to determine what type of soil loop to use. Body of surface water may be used as a water supply for an open bow system or as a pipe reservoir in a closed bow system, based on variables such as depth, quantity and water quality. Groundwater may also be used as an open-loop system source.
Your system architecture also includes the quantity and size of your soil, your landscape and the position of underground infrastructure or sprinkler systems. In newly constructed buildings with sufficient ground, horizontal floor loops (usually the most economical) are commonly used. Vertical systems are mostly used for established buildings as they eliminate vegetation disruption.
Benefits of GHPS
GHPs have the greatest advantage: they consume approximately 25% to 50% less fuel than traditional heating and cooling systems. It is a GHP with an energy unit to transfer three power sources from the ground. Geothermal heatpumps will, according to the EPA, minimize the energy usage and the associated emissions up to 44% compared to heat pumps from air supply and up to 72% compared to heating electrically resistant and regular air conditioning equipment. GHPs often improve humidity balance by retaining nearly 50% relative indoor humidity, rendering GHPs highly efficient in habitats.
Geothermal heat pump systems allow flexibility of configuration and can be installed both in new conditions and in improvements. As the equipment needs fewer volume than traditional HVAC systems, the installation spaces may be substantially minimized to open up for efficient applications. GHP systems often have fantastic expansive “location” ventilation, which allows it easy to heat or cool various parts of your home at specific temperatures.