Disadvantages Ground Source Heat Pumps, Advantages ground source heat pumps, Problems with


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Advantages of Ground Source Heat Pumps

Disadvantages of Ground Source Heat Pumps

Good design is critical to GSHP performance

Benefits of Ground Source Heat Pumps

Pros and Cons of Ground Source Heat Pumps

Heat pumps sale

Heat pumps sale

Heat pumps sale

Heat Pump

A Heat Pump is a machine working on the Carnot cycle which transfers heat from a heat source to a heat sink using a vapour compression cycle. A refrigerator uses a heat pump to move heat out of a fridge. An industrial heat pump can be used to move heat from an external source into a building. Heat may be obtained from an air source, a ground source or a water source. A heat pump can concentrate such “low grade heat” into higher grade heat that can be used for space heating and domestic hot water.

Ground Source Heat Pump GSHP

A ground source heat pump extracts heat from the ground whose temperature will be warmer than the air in winter (and cooler than the air in summer). For this reason they are more efficient than air source heat pumps, especially in the coldest weather when they are most needed. They generate very little noise and should last for many years with minimal servicing.

The most practical way of extracting this energy is through water circulating through pipes in the ground. The pipes for the ground loop are usually laid in horizontal trenches at two metres deep, but vertical boreholes are an alternative, if more expensive, way of achieving similar results where there is not enough land to lay pipes horizontally.

At depths below six metres, the ground temperature does not vary much from the Mean Annual Air Temperature (around 9 C -11 C in the UK depending on location). At a depth below two metres, there is a large store of warmth that can be tapped for heating in the winter. However, this temperature will drop quickly where a heat pump is extracting a lot of heat from a small ground loop it is therefore very important that the size of the ground loop matches the heating load of the building. The key to achieving this balance is a full thermal modelling exercise.

Advantages of Ground Source Heat Pumps Pros and Cons

Heat pumps save money. Heat pumps are much cheaper to run than direct electric heating. They are cheaper to run than oil boilers and can be cheaper than running gas boilers. Because heat pumps can be fully automated they demand much less work than biomass boilers.

Heat pumps save carbon emissions. Unlike burning oil, gas, LPG or biomass, a heat pump produces no carbon emissions on site (and no carbon emissions at all, if a renewable source of electricity is used to power them).

Heat pumps save space. There are no fuel storage requirements.

Heat pumps are safe. There is no combustion involved and no emission of potentially dangerous gases. No flues are required.

Heat pumps require less maintenance than combustion based heating systems.

A well designed ground source heat pump system will increase the sale value of your property.

Heat pumps can provide cooling in summer, as well as heating in winter.

The planning authorities like ground source systems as they are safe, silent, invisible heating systems with low environmental impact.

The Government likes ground source systems and offers a much higher rate of Renewable Heat Incentive than for other renewable technologies.

Disadvantages of Ground Source Heat Pumps Pros and Cons

GSHPs are more expensive to install than air source heat pumps because of the need to install a ground heat exchanger. However, this connection to the ground is what enables a GSHP to perform much more efficiently than an ASHP particularly when the external air temperature is low in winter and you most need heating.

Heat pumps sale

Problems arise with ground source heat pumps if the installation is poorly designed or not matched to the heating needs of the building. The design and installation of an effective ground source system depends on a thorough understanding of the movement of heat in the ground, the local geology and the heating and cooling requirements of your building. To get the potential benefit of a well designed system you will need to be in touch with an expert installer. This increases the cost of the installation, but good design and planning will yield substantial benefits over the life of the system.

Greater benefits can be achieved by moving to a full Interseasonal Heat Transfer system.

Coefficient of Performance CoP

The Coefficient of Performance is found by dividing the useful heat output by the electrical energy input. A heat pump that transfers 4 kilowatts of heat from the ground for 1 kilowatt of electricity has a CoP of 4.

Can I expect a CoP of 4 from a GSHP?

Not necessarily. A heat pump may yield a CoP of 4 in test conditions, but it will not always do so in an installation unless the ground loop is well designed and the heat delivery mechanism in the building is also well matched to a GSHP. It is possible to obtain a much higher CoP when a ground source heat pump is integrated with a solar collection system and a ThermalBank in order to achieve Interseasonal Heat Transfer.

Is it true that the CoP of a GSHP degrades as time passes?

As a GSHP draws heat out of the ground, the ground temperature will fall from its natural temperature of 10 C at depth towards 0 C or colder. The heat pump must work harder to produce the same output from a lower heat input: therefore the CoP tends to fall over the heating season (unless the ground loop is large enough and heat is only extracted slowly). This is because heat only moves slowly through the ground. This limitation can be converted into an asset by creating a ThermalBank to store solar heat energy in summer for use in winter.

Thermal Modelling

Thermal Modelling is critical to good design in any large installation of a ground source heat pump. The sizing of the ground loop is key to the successful operation of the heat pump. Before sizing the ground loop correctly it is necessary to understand the qualities of the ground to be used as well as the expected heating loads and cooling loads of the building and these will be affected by the design of the building, its orientation to the sun, the activities in the building and the ventilation strategies. These are complex issues which need to be analysed in a thermal model to ensure that the system will meet the temperatures required in the building throughout the seasons of the year in a well balanced and sustainable way.

Control Systems for Ground Source Heat Pumps

A good control system is important in achieving good results from ground source energy. The controls are critical if a building employs ground source energy in conjunction with other forms of heating which may be employed for generating domestic hot water or as a supplementary heating system in very cold weather.

Large Commercial GSHP Installations can benefit from Demand Response

Large heat pump installations particularly those that provide cooling in summer as well as heating in winter can now benefit from Demand Response: if clients are prepared to use the thermal mass of their buildings to store heat in advance of peak electric demand and defer heating at times of peak demand they can earn income from the Grid.

Contact ICAX

We prefer to work in conjunction with architects and M E consultants from the earliest stage to ensure that there is a clear understanding of how we can help to deliver a sustainable building with a high carbon offset.


Drill Pipe – Riser Cleaning #waterjetting, #water #jetting, #water #jetting #equipment, #water


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Drill Pipe Cleaning

Aqua Energy are a market leader in manufacturing and supplying drill pipe and oil riser cleaning systems.

For manually cleaning pipes, box pins in different locations our diesel engine driven, 10′ foot, containerised unit, our skid mounted or trailer mounted units are ideal.

We manufacture a mobile semi-robotic drill pipe cleaner that is installed inside 20′ foot or 40′ foot container. Once on site two operators take several hours to set up the cleaning system. Once set up the semi robotic system should easily clean forty to eighty 48′ feet pipes inside and outside in an eight our shift.

For permanently situated inside pipe yards we manufacture and supply semi robotic or full robotic pipe cleaning systems.

Our very basic equipment will clean 20 to 30 drill pipes in an 8 hour shift and our fully robotic system can clean up to 130 (one hundred and thirty) 14.80 metre (48′ feet) long pipes, box and pins in the same 8 hour shift.

  • With our robotic equipment the customer has many options.
  • He can clean the pipe ID first and then clean the OD.
  • Or if he requires fast production, he can clean both the ID and the OD at the same time.
  • Plastic lined pipes are not damaged due to the variable pressures of the system.
  • Using 2,800 bar (40,000 psi) pressure we can clean the pipes, box and pins to a surface finish suitable for NDT inspection.
  • With our larger pumps removing hard concrete or cement from the pipes is not a problem.
  • With our system there is no requirement for abrasive bead blasting.
  • NORM Scale is easily removed.
  • Our Riser cleaning equipment is the fastest on the market.

Please visit our YouTube channel for videos of our equipment in operation.

Pipe before after cleaning

The above risers are being cleaned with our Model: DC-400, 20′ foot containerised unit.

Pipe Cleaning

This image is of our Model: DT-60-ST, Diesel Engine Driven, Trailer Mounted, Low Pressure Pipe Cleaning Unit.

The small 50 horsepower pumps are driven with 61 horsepower engines and are ideal for removing sand, silt and light rust from 8″ metal pipes.

The DT-60-ST has twin water tanks that hold up to 1,000 litres of water and these are good for pipe yards that don’t have water readily available.

  • Pressures for this model range from 100 bar up to 600 bar.
  • Water flow from 30 litres per minute up to 100 litres per minute.
  • Special build models can be supplied in 1,500 bar up to 2,500 bar.

The photo shown is in the Maldives in the Indian Ocean where the customer purchased two of these small units specifically for pipe and sewer cleaning.


Supreme Plumbing Heating Cooling #air #conditioners, #air #conditioning, #air #conditioning #compressors, #hvac


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For more than 50 years, Supreme Plumbing, Heating and Cooling has served residential and commercial customers with the highest quality products and service from NATE-certified* technicians. Whether servicing an existing unit or installing a new or replacement system, Supreme will work with you to find the most cost-efficient, energy-saving system for your home or business, with our goal being your year-round, uninterrupted comfort.

Our conscientious, efficient technicians are factory trained to assist you with your home and business comfort needs. They are experts in all types of applications including heat pumps, high-efficiency furnaces and air conditioners, boilers and geothermal systems. Call us for a free estimate on installations.

Our licensed, professional and courteous plumbing experts provide solutions for all of your plumbing problems including water heaters, bathroom and kitchen faucet and fixture installation and repair, washer and dryer connection, water and gas lines and more. We also have a full-service sheet metal fabrication shop for custom installations and repair needs.

Supreme is a Bryant Factory Authorized Dealer. What makes a Bryant Factory Authorized Dealer stand out is the unparalleled performance the company offers – true excellence in every aspect of operations, product solutions and technical know-how. The Bryant Factory Authorized Dealer emblem indicates Supreme meets high standards for superior skills, service, products and comfort.

Supreme Heating & Air Conditioning Co. Inc
1399 E Margaret Dr, Terre Haute, IN 47802
Call 812-234-4845

For more than 50 years, Supreme Plumbing, Heating and Cooling has served residential and commercial customers with the highest quality products and service from NATE-certified* technicians. Whether servicing an existing unit or installing a new or replacement system, Supreme will work with you to find the most cost-efficient, energy-saving system for your home or business, with our goal being your year-round, uninterrupted comfort.

Our conscientious, efficient technicians are factory trained to assist you with your home and business comfort needs. They are experts in all types of applications including heat pumps, high-efficiency furnaces and air conditioners, boilers and geothermal systems. Call us for a free estimate on installations.

Our licensed, professional and courteous plumbing experts provide solutions for all of your plumbing problems including water heaters, bathroom and kitchen faucet and fixture installation and repair, washer and dryer connection, water and gas lines and more. We also have a full-service sheet metal fabrication shop for custom installations and repair needs.

Supreme is a Bryant Factory Authorized Dealer. What makes a Bryant Factory Authorized Dealer stand out is the unparalleled performance the company offers – true excellence in every aspect of operations, product solutions and technical know-how. The Bryant Factory Authorized Dealer emblem indicates Supreme meets high standards for superior skills, service, products and comfort.