Subscribe to our weekly newsletters
Subscribe to newsletter

 

Editor's Note: Danfoss provide:-

Cooling systemsCooling systems
Water cooling systemsWater cooling systems
Air conditioning systemsAir conditioning systems

 

Request Information

Home
Include Article
Advertise
 

Links
Request Information
Terms of use
Contact

 

Request Facilities / Interiors product information

Request Architectural product information External

Request Architectural product information Internal

Request Mechanical HVAC product information

Request Electrical product information

 

DANFOSS - The Climate-Friendly Hotel

While a completely carbon neutral solution is not yet possible, say the owners of Crowne Plaza Copenhagen Towers, the new luxury hotel in Copenhagen's Ørestad district comes close to achieving it by deploying the best environmental and energy technology on the market.

Copenhagen's latest luxury hotel, the elegant Crowne Plaza Copenhagen Towers in Ørestad, has been designed from the ground upwards with sustainability in mind. From the point of view of energy and the environment, the hotel is several steps ahead of every other hotel in northern Europe. In order for energy consumption and CO2 emissions to be as low as possible, the hotel insisted on state-of-the-art energy technology throughout. One of its most significant features is an innovative ground water cooling system. This supplies the heating and air conditioning for 366 guest rooms, conference rooms, kitchen, restaurant and offices in an adjoining wing.

Copenhagen Towers is also equipped with 2,500 specially adapted solar cell panels mounted on three of the hotel's four facades, where they provide part of the building's electricity requirements throughout the year. The installation constitutes Denmark's largest private array of solar cells, producing 170,000 kWh per year – equivalent to the electricity consumption of 55 average-sized detached houses. Both the ground water heating / cooling system and the solar cells are part of the foundation on which the hotel's 'green' profile rests. To make them as energy-efficient and cost-effective as possible, the systems are equipped with Danfoss VLT® frequency converters and TripleLynx solar inverters.

Ground water cooling and heat pumps save energy

The ground water cooling system required two lots of drilling to a depth of 110 metres at two locations near the hotel. In the summer, cool water from the ground, at 9˚C, is pumped via one set of wells to the hotel's cellars where it is sent through a heat exchanger and back down to a heat reservoir where the heat accumulates and is stored during the warmer months. The cooled water from the heat exchanger is circulated in the building to cool rooms to the desired temperature. No active refrigeration is required. The COP (coefficient of performance) can be as high as 40, which means that the cooling effect is 40 times the electricity consumed by the installation.

In winter, water from the reservoir, which has accumulated heat during the summer period, is pumped through the heat exchanger and back down to the wells. Heat from the heat exchanger is sent through two heat pumps which raise the temperature to 55˚C. This is then used to heat hotel rooms and offices. "The combination of ground water cooling and heat pumps is an innovative solution. It allows us to recycle heat from the summer months and use it during the cold winter months," explains Peter Andersen, Copenhagen Towers' Property Director. The installation represents Denmark's first ground-water based cooling and heating system and will save up to 90% of the hotel's heating and air conditioning energy consumption.

High efficiency by means of VLT® frequency converters

The two GEA Grenco heat pumps have a combined heat pump performance of 2,400 kW and are fitted with frequency converter controlled screw compressors which enable the pumps to adjust the heat capacity continuously from low to full performance, with the same efficiency. Heat pumps do not always run at full capacity and it is therefore important for energy consumption that efficiency is high, irrespective of whether the system is working at full or half capacity. All ground water pumps have VLT® frequency converters, and speed control of the pumps that propel heat around the hotel's internal heating and air conditioning systems is also performed by Danfoss frequency converters. These help to ensure good capacity control and afford superlative energy savings for the pump system.

Facades covered in solar cells

The solar cell panels mounted on the hotel's facades are the largest installation of their kind in northern Europe. Each of the Crowne Plaza's south-facing facades is covered with ultra-thin, high-tech solar cells. Together, these generate around 170,000 kWh per year, roughly 10% of the electricity consumption of the hotel. The hotel buys the remaining 90% in the form of green energy produced by wind turbines from DONG Energy.

Solar cell inverters are used to connect the solar cells to the building's electricity network. A total of 14 TripleLynx Danfoss inverters ensure that direct current from each section of the solar cell installation is converted to 400 volt 3-phase AC power for the hotel's mains supply. The inverters automatically optimise performance according to the amount of electricity produced by the solar cells at any given time. If insufficient electricity is produced by solar power, the inverters shut down automatically. The total solar cell capacity is 270 kW.

Other initiatives

Several other initiatives have been used to reduce CO2 emissions as far as possible and to ensure that the hotel achieves its aim of sustainability. For example, VAV (Variable Air Volume) ventilation has been installed in all of the hotel's rooms. "This means that we can control air volumes electronically in each room, according to need and to occupancy. We also have intelligent lighting in all hotel corridors and low-energy lights in general. There are LED reading lamps in guest rooms," says Andersen.

Another measure is water-saving equipment, including energy and water-efficient dishwashers. Unnecessary products and packaging have also been cut back. Guest rooms have LED flat-screen televisions which at the time of purchase were the most energy-efficient. All electronic equipment is computer-controlled from reception so that consumption is kept to a minimum when the room is not in use. Fridge temperatures are changed according to the time of day. All components of the hotel’s IT infrastructure - not least PCs and laptops - are selected for their energy characteristics and reusability. It has even been decided to forego the customary hotel information folder. All the information a hotel guest might need is available in electronic and interactive format via the television, presented in a familiar ‘Internet page’ format. "Our basic principle is to attain sustainability without compromising quality and visitor comfort. I believe we have managed to achieve both," says Andersen.

Box

Copenhagen Towers fulfils the requirements of the EU GreenBuilding Programme. It is also the first hotel in Denmark to register under the UN Global Compact.

The hotel has been built to the Danish building regulations' Low Energy Standard, Class 2, which means that it is not allowed to use more than 42.6 kWh of energy per square metre per year. This represents a saving of 53% compared to the current energy frame (2008), of 90.9 kWh of energy per square metre per year.

Copenhagen Towers also expects a yearly saving of 1,373 tons of CO2.

E-mail Danfoss


SE Controls Natural ventilation systems Smoke control systems Window actuators News 081110

Danfoss Heat pumps Speed drives Inverter drives Pressure switches News 081110

Osram Energy efficient lighting Fluorescent lighting Energy saving lighting News 081110

Dimplex Flame effect fires Electric fires Fires and surrounds News 081110

Marley Alutec Rainwater systems Aluminium guttering Drainage systems Aluminium downpipes News 081110

Windhager Gas boilers Energy efficient heating Hot water systems News 081110

Cavalok Cavity closer systems Window closers Cavity fire barriers News 081110

Rockwool Stone wool insulation Insulation products Energy efficient insulation News 081110

Tratos Cable manufacturer Fire resistant cable Fibre optic cable News 081110

Isothane Cavity wall insulation Insulation products External wall insulation News 081110

Rytons Cavity vents Weep holes Building products Ventilation systems News 081110

Slingsby Manual handling equipment Workplace equipment Recycled plastic pallets News 081110

SE Controls Smoke control systems Natural ventilation systems Smoke ventilation News 091110

Danfoss Variable speed drives Low harmonic drives Air conditioning News 091110

Osram LED lighting Osram lighting Light fittings Commercial lighting News 091110

Gilberts Security grilles Air distribution Fire controls Perforated grilles News 091110

 Telling Architectural Rainscreen facades Photovoltaic solar panels Rainscreen cladding systems News 091110

RMIG Aluminium cladding Aluminium panels Perforated metal Acoustic panels News 101110

SE Controls Smoke control systems Smoke detectors Smoke ventilation systems News 101110

Danfoss Cooling systems Water cooling systems Air conditioning systems News 101110

Marshall Tufflex Energy saving units Sub metering systems Energy saving News 101110

Baxi Group Biomass boilers Domestic biomass boilers Wood pellet boilers News 101110

Levolux Solar shading Roller blinds Ventilation louvres Natural ventilation News 101110

Hanson Formpave Concrete block pavers Permeable pavers Permeable block paving News 101110

Window Security Solutions Window shield Window security Vandal shield Glass security News 101110

Oracle Storage systems Wall storage systems Wall filing systems News 101110

SE Controls Automatic window controls Smoke ventilation systems Window automation News 111110

Danfoss Heat pumps Ground heat pumps Ground source pumps News 111110

ENER-G Sustainable energy Data solutions Heat pumps Renewable energy News 111110

Hanson Formpave Block pavers Concrete paving products Permeable block paving News 111110

Isothane Polyurethane coating PU foam Spray foam Industrial foam News 111110

Vent-Axia Ventilation systems Domestic ventilation Natural ventilation Ventilation fans News 111110

Chubb Security Security systems CCTV systems Access control Intruder alarms News 111110

Ellis Furniture Bathroom furniture Bathroom washstands Bathroom worktops Bedroom furniture News 111110

Promat Fire protection systems Passive fire protection Fire protection News 111110

Kalzip Standing seam roofing Low U-value roofing Metal roofing and cladding Solar solutions Green roof systems News 111110

SE Controls Natural ventilation systems School ventilation Commercial ventilation systems News 121110

Hanson Formpave Concrete products Permeable paving Block paving Concrete pavers News 121110

Danfoss Air handling units HVAC drives Variable speed drives News 121110

Coolmation Cooling systems Cooling products Efficient cooling Industrial cooling News 121110

Hanson UK Building materials Cement materials Building aggregates Concrete materials News 121110

Leaderflush Shapland Door sets Metal doors Internal doorsets External doorsets News 121110

Alliance Lighting Aluminium lighting Light fittings Light standards Designer lighting News 121110

Amalgamated Lifts Lift manufacturer Lift maintenance Lift installation Passenger lifts News 121110

Isover Wool insulation Wall insulation Thermal insulation Acoustic insulation News 121110

F Ball and Co Flooring adhesives Waterproof floor membrane Epoxy resin flooring News 121110

Ventrolla Sash windows Window restoration Timber windows Sliding windows News 121110

Gooding Aluminium Aluminium sheets Aluminium profiles Aluminium extrusions Aluminium products News 121110

Schluter-Systems Underfloor heating systems Underfloor heating Radiant flooring heating News 121110

SE Controls Natural ventilation Window automation Solar shading Smoke detection News 151110

Hanson Formpave Concrete products Concrete paving Concrete pavers Permeable paving News 151110

AET Heat pumps Solar panels Air conditioning Flexible space News 151110

Prysmian Cable resin Resin products Electrical cables Power cables News 151110

Armstrong Speed pumps Pump systems Booster pumps Water pumps News 151110

Sunbell Solar shading Light control blinds Remote control blinds News 151110

Forbo Flooring systems School flooring Vinyl flooring Linoleum flooring News 151110

Black Millwork Timber windows Timber doors Patio doors Casement windows News 151110

Knauf Insulation Knauf insulation Carbon management Wool insulation Wall insulation News 151110

Mega Marble Natural stone Natural quartz Marble products Granite products News 151110

Cooper Lighting Commercial lighting Lighting systems Emergency lighting Recessed spotlights News 151110

Cirrus Safety products Noise measurement equipment Sound level meters News 151110

Saint-Gobain Drainage systems Wastewater systems Drainage pipe Commercial drainage News 151110

SE Controls Natural ventilation systems Smoke control systems Window automation News 161110

Dimplex Electric heating Heating products Heat pumps Solar panels News 161110

Crown Trade Trade paint Acrylic eggshell paint Washable matt emulsion News 161110

Weatherite Kitchen ventilation Ventilated ceilings Building services Air conditioning News 161110

Evac Chair Emergency evacuation chairs Evacuation chairs Evac chair training News 161110

Action Storage Storage lockers Storage equipment Plastic lockers Waterproof lockers News 161110

Nuaire Ventilation products Smoke ventilation Ventilation solutions Carpark ventilation News 161110

CMS Acoustics Acoustic panels Sound absorbing panels Acoustic sound panels News 161110

Flowcrete Commercial flooring Resin flooring Floor screed Flooring systems News 171110

SE Controls Natural ventilation systems Smoke control systems Window automation News 171110

Leaderflush Shapland Fire resistant doors Performance doors Fire resistant doorsets News 171110

Twyford Bathrooms Bathroom suites Shower screens Shower trays Bathroom sinks News 171110

Chloride UK Data centre technology Uninterruptible power supplies UPS systems News 171110

Pilkington Building products Energy efficient windows Architectural glass windows News 171110

Action Storage Storage equipment Plastic lockers Waterproof lockers Storage lockers News 171110

Kalzip Standing seam roofing Low U-value roofing Metal roofing and cladding Solar solutions Green roof systems News 171110

Mann McGowan Laminate door boards Fire resistant doors Laminate board News 171110

H+H UK Thermal insulation Wall insulation Celcon blocks Aircrete blocks News 171110

SDS Surface water management Storm water management Drainage systems News 171110

SE Controls Natural ventilation systems Manual window controls Control systems News 181110

Twyford Bathrooms Bathroom shower designs Water saving wc Bathroom suites News 181110

Osram Fluorescent light fittings Energy efficient lighting Light fittings News 181110

Cembrit Fibre cement corrugated sheets Cladding panels Roof slates News 181110

JS Air curtains Warm air curtains Industrial air curtains News 181110

Harlequin Dance floors Performance flooring Ballet barres Vinyl flooring News 181110

Window and Door Security Systems Window security Door security Security systems Window protection News 181110

Playgarden Outdoor play equipment Outdoor play spaces Play equipment News 181110

Sadolin Wood protection Wood stain Sadolin woodstain Wood paint News 191110

Chloride UK UPS power systems UPS systems Uninterruptible power supplies News 191110

Wavin Push fit fittings Flexible plumbing fittings Hep20 fittings News 191110

Harlequin Dance floors Dance mats Studio flooring Dance flooring News 191110

Hitachi Air conditioning units Heat pumps Heating and cooling News 191110

GreenBrook Weatherproof sockets Spur units Electrical sockets Outdoor sockets News 191110

Urban Hygiene School paint Washable paint Protective coatings Graffiti remover News 191110

 

Arundel Jones Associates Ltd Registered in England and Wales No. 07334149
Hill Farm, Linton Hill, Maidstone, Kent ME 17 4AL
Tel : 01622 745333 email
copyright all rights reserved

News Categories : Cooling systems
Water cooling systems
Air conditioning systems