Groenholland was founded in 1990 in Amsterdam as an earth sciences consultancy investigating and resolving soil and groundwater contamination issues.
In the mid nineties our focus shifted to shallow geothermal energy systems. Gradually over the years moving from the (TRT) testing, design and implementation of heat exchanger wellfields to the design and delivery of complete heat pump installations, with in-house controls and software capability.
In the geothermal market Groenholland is regarded as a highly specialized company with the knowledge, experience and references to be able to offer the complete heat pump installation package with long term reliability and high energy efficiency. All our installations have "desk top" browser type access and come complete with RHI (Renewable Heat Incentive) approved energy metering.
Active in the UK since 1998, Groenholland UK Ltd. was incorporated in 2001. Over the period Groenholland has proven itself as a innovative and reliable partner, involved in many groundbreaking as well as prestigious projects over the years.
THE COMPLETE GROUNDSOURCE INSTALLATION
A closed loop heat pump system is a complete package, with integrated thermal, hydraulic and electrical design, the system's operating strategy and it's controls. A complete integral package does away with shared responsibilities that often lead to overlooked items, hidden cost and poor integration with the building's heating and cooling systems.
Installations made up out of components sourced through a variety of subcontractors (drillers, heat pump installers, electricians, controls companies) invariably lead to disappointment, technical malfunctioning, low energy efficiency, loss of time and money. A complete and warranted installation will avoid clashes as well as the "forgotten bits in the middle" and the "drain & strain" on management resources.
INVESTMENT, OPERATING COST & ENERGY EFFICIENCY
At first glance a complete package is often regarded as expensive. However as the name implies it includes all the items essential for long term efficient operation and low maintenance cost, which is the essence of a geothermal heat pump system.
Cost savings are related to savings on primary energy, low maintenance cost, long life and thereby low life cycle costs. All these aspects are inherent with a high quality groundsource installation. Although energy savings are project specific, a standard heating and cooling operated heatpump installation should achieve savings over a conventional gasboiler/chiller installation of between 30-50%, even if the National electricity generating and transport losses are taken into account.
A ground source heat pump installation can be a sound long term investment, with a high return, providing it is well designed, well implemented and thereby fulfils it's lifetime expectations.
TURN KEY APPROACH
Off site construction of modulair heat pump installation elements allows high built quality, pre-installed testing on time delivery and limited plantroom works.
The approach that integrates and warrants all aspects of the design and construction cycle: site testing, feasibility of ground source energy systems, integrated thermal and hydraulic design of heat pump installations and controls to suit the building energy requirements and to maximize energy savings within the available budget.
We invite you to discuss your energy requirements with us and fully evaluate and integrate the capabilities of the groundsource heatpump technology into your project.
High quality products to extract the maximum efficiency from an installation with little or no maintenance. Not only today, but also in 25 years time. Off site fabrication of our modulair installations allows high built quality and little loss of time when installing systems on site.
Design & engineering of installations as well as the selection of components and their performance are coordinated with the client.
All products are warranted, monitoring off system key parameters (temperatures, flows) and energy metering when the installation is in use underwrites this.
Project consultancy & design
Projects vary from large scale domestic housing and apartments, to schools, galleries, hospitals and universities as well as commercial developments such as offices and warehousing.
What the projects have in common is the desire to use energy saving sustainable technology and to design with this in mind.
Using geo-energy to its full potential, whilst keeping the projects elegant and economically justifiable.
Targets on reducing the use of fossil fuels (gas, oil and electricity) are often the focus point. Therefore it is essential at an early stage to quantify the ability of a groundsource installation to achieve the set energy targets within restraints such as the building's heating and cooling temperatures, annual energy loads and project budget.
"turn key" implecates design, engineering and implementation in one hand, providing technical as well as a thermal warranties on the performance and efficiency of the end product.
WWF, Woking (UK)
Building work on the World Wildlife Fund (WWF), Living Planet Centre (BREEAM outstanding) in Woking, Surrey.started in May 2011, with completion later this year (2013).
The 160 kW heat pump installation has been supplied as a turn key system, providing all heating and the bulk of the cooling to this new building.
Providing the ground source heat pump systems for two of the largest new built schools in the UK
Groenholland designed, built and installed a ground source heat pump system (350 kW) for the new Holland Park secondary school (Airlie Gardens, London UK) and the UCL Academy (Adelaide road, London UK).
Both schools will be in full use in the 2012 - 2013 school year.
At Adelaide Road the Groenholland control system integrates the ground source heat pump installation with the passive solar thermal panels used for both DHW production and thermal regeneration of the geothermal wellfield.
Central Bank, Dublin
Extensive flow & pressure testing and a geothermal response test on the existing borehole heat exchanger on this Dublin project.
Thermal interference in the underground
Groenholland have developed a methodology for calculating temperature interference between adjacent closed loop borehole heat exchanger (BHE) projects.
The ability to quantify thermal effects between different systems will in the near future become an essential element in the design of areas housing multiple BHE's. As the number of implemented BHE based systems is steadily growing, it has become apparant that spatial planning and optimisation of underground energy systems requires appropriate tools.
The project was carried out for the Dutch ministery of Infrastructure & Environment.
The Groenholland geothermal installations are based on a modulair approach with all modules manufactured and tested off site. With our own control software, the systems are truly stand alone whilst communication to the main building BMS is possible at all times through the BACnet IP or Modbus protocols.
Etten-Leur (NL) monitoring. This very large scale project consists of over 1200 homes, all with individual geothermal heat pumps for heating and DHW.
The total installed heat pump capacity is over 5MW, making it one of the largest geothermal projects in the world. Designed in 2005 and installed in the period 2005 - 2008 all systems have been running for at least four years or more.
Starting in the summer of 2011 Groenholland has been monitoring the soil temperature in a large number of observation wells (>25) on the 13 hectare site.
Results from the now almost two years of monitoring are being used to validate the original long term soil temperature development modelling done for the original feasibilty study.
Micro Generation Scheme
Groenholland UK are certified as a groundsource heatpump installer under the Microgeneration Certification Scheme (MCS 1201).