Ground and air source heat pumps pdf

Mammoth water source heat pumps products mammoth wshp group november 2014. Currently, ground or water source heat pumps can get 20. Sustainable design of groundsource heat pump systems core. The more energy efficient the systems are, the greater long term savings on energy. Air source and ground source heat pumps the two main categories of heat pump are airsource and groundsource. Pdf geothermal ground source heat pumpsa world overview. The gshp system that serves the second floor includes 14 individual watertoair heat pumps with total nominal cooling capacity of 111 kw connected to a ground. Seasonal performance factor spf spf is defined in the regulations as in relation to an air source heat pump or a ground source heat pump, the ratio of its heat output to electricity. Groundsource heat pumps design of geothermal systems for commercial and institutional buildings, american society of heating, refrigeration and airconditioning engineers ashrae, atlanta, ga. Groundsource or geothermal heat pumps are a highly efficient, renewable energy technology for space heating and cooling.

Ground source heat pumps gshp use the constant temperature that exists just below the ground or in a body of water to transfer heating or cooling energy to a building. The groundsource or geothermal heat pumps gshp or ghp, thus have several advantages over airsource heat pumps. Pdf an introduction to groundsource heat pump technology. Groundsource heat pump gshp systems use the ground as a heat. Ground source heat pumps centre for sustainable energy. A controller for a standard groundsource heat pump. Index termsheat pump, ground source heat pumps, cop, air source heat pumps. The rhi regulations sets out the requirements related to the efficiency of heat.

Airsource heat pumps have been used for many years in nearly all parts of the united states, but until recently they have not been used in areas that experienced extended periods of subfreezing. Ground or air source heat pumps permissions planning permission. However, once everything is into place including the ground loop, nothing gives away the. Heat pumps operate more efficiently the smaller the temperature difference between the collectors the pipes in the ground and the emitters the heat distribution system. It can get heat from the air even when the temperature is as low. Air source heat pumps or ashps use an outdoor unit to extract heat from the air. Pdf using groundsource heat pump systems for heating. Domestic ground source heat pumps geothermal communities. Design flexibility with the variety of indoor air handler options. Airsource heat pump gas furnace airsource ac energy star gshp best availiable gshp heating cooling efficiency 11.

Circulation pumps and gshp system optimization in cooling mode. Ground source heat pumps explained we explain the pros and cons of ground source heat pumps to help you decide whether theyre right for your home. Airsource heat pumps while geothermal heat pumps operate similarly to the far more common airsource heat pump ashp, geothermal heat pumps are substantially more energyefficient. The ground serves as seasonal storage of solar energy. Heat pumps take low grade heat from a heat source ground, air or water and concentrate this heat normally into hot water this is then be used. Airsource, groundsource, and absorption heat pumps. Payback period estimation of groundsource and airsource. Heat pump a heat pump is an air conditioner that can work in reverse interior cooling or heating before heat pumps homes might have electric air conditioning paired with gas, electric resistance, or other sources for heating the heat pump is one piece of equipment that can do both jobs heating and cooling. Pdf ground source heat pumps download full pdf book. Ground source heat pump, energy efficiency, renewable energy. Airtoair ground source heat pumps an overview sco conference. Heat pumps and churches some points to bear in mind.

This publication focuses on watersource heat pump wshp and groundsource heat pump gshp systems, including boilertower, groundcoupled, groundwater, and surfacewater systems. Air source heat pumps while geothermal heat pumps operate similarly to the far more common air source heat pump ashp, geothermal heat pumps are substantially more energyefficient than even ashps because they take advantage of the relatively consistent ground temperatures, which are far more uniform than air temperatures. Heating and cooling buildings using ground source heat pump systems also known as geothermal heat pumps are becoming more and more popular. A heat pump is a device that is designed to use a refrigeration cycle to effectively transform lowtemperature energy into highertemperature. However, ground source also called earthenergy, geothermal, geoexchange heat pumps, which draw heat from the ground or ground water, are becoming. Air source heat pumps an air source heat pump extracts heat from the outside air in the same way that a fridge extracts heat from its inside. Ground source heat pumps, also known as geothermal heat pumps, are highly effective space heating and cooling technologies that extract heat from the ground.

Heating and cooling with a heat pump home heating and cooling series issued also in french under title. Ground source heat pumps presents the theory and some of the most recent advances of gshps and their implementation in the heatingcooling system of buildings. The basics process heat pump refrigeration cycleheat pump refrigeration cycle cooling tower watertoair. Groundsource heat pumps publications ndsu agriculture. By now, youve learned that airsource heat pumps use an outdoor fan to bring air over refrigerantfilled coils.

Kensas evo ground source heat pump series features 7kw, 9kw and kw models. This technology relies on the fact that, at depth, the earth has a relatively constant. The ground temperature also remains relatively stable. Ground and air source heat pump guides and advice which. Groundsource and airsource heat pump system performance at the. It is shown that the annual running costs of ground and airsource heat pumps. The authors explore the thermodynamic cycle with calculation, operation regimes and economic indicators and ghg emissions of a vapor compression heat pump. An air source heat pump absorbs heat from the outdoor air in winter and rejects heat into outdoor air in summer. Groundsource variable refrigerant flow heat pumps page 4 figure 6. Design flexibility with the variety of indoor air handler. Easier retrofits where running ductwork is an issue, such as an older building that lacks ductwork or where the current. Moreover, during the cooling season, its function can be reversed, and it becomes an air conditioner.

Either one can keep your home warm in the winter and cool in the summer. Ground source heat pumps gshps use low level heat energy created by solar gain in the near surface layers of the earth to extract energy which can be used for space and water heating. A heat pump can be an efficient alternative to a standard home heating system. During the installation process, a ground source heat pump will make some dramatic changes. The pipes are filled with a fluid that flows into the heat. Installing a ground or air source heating system will not require planning permission, provided. Conversion to heating and cooling systems based on groundsource heat pumps and airtowater heat pumps is a wellproven measure to approach nzeb requirements. Cop is determined by laboratory testing at defined source and heat flow temperatures. Ground source heat pumps gshp the ground source heat pump system extracts heat from the ground using plastic piping that is buried in the ground. The solar energy stored in the ambient air, in the ground or in groundwater is used to efficiently heat domestic hot water and heating. Pdf groundsource heat pumps gshps, or geothermal heat pumps have great appeal in offering levels of efficiency for building heat and cooling that. Geothermal heat pumps tend to be bigger than air to water heat pumps.