Steensen Varming is an engineering firm headquartered in

Copenhagen Copenhagen ( ) is the capital and most populous city of Denmark, with a population of 1.4 million in the Urban area of Copenhagen, urban area. The city is situated on the islands of Zealand and Amager, separated from Malmö, Sweden, by the ...

, Denmark.

History

It was founded by Niels Steensen and Jørgen Varming in Copenhagen, Denmark, in 1933. The firm specialised in civil, structural and building services engineering. During the 20th century, the practice grew out of Denmark and new offices were established in Australia (Steensen Varming Australia ‐ 1973), United Kingdom (Steensen Varming Mulcahy ‐ 1957) and Ireland (Varming Mulcahy Reilly Associates ‐ 1947). Jørgen Varming was the son of a prominent Danish architect, Kristoffer Varming; Jørgen studied engineering at the University of Newcastle.

Sydney Opera House

Steensen and Varming were chosen by the Danish architect

Jørn Utzon Jørn Oberg Utzon (; 9 April 191829 November 2008) was a Danish architect. In 1957, he won an international design competition for his design of the Sydney Opera House in Australia. Utzon's revised design, which he completed in 1961, was the b ...

as the mechanical consulting engineers for the

Sydney Opera House The Sydney Opera House is a multi-venue Performing arts center, performing arts centre in Sydney, New South Wales, Australia. Located on the foreshore of Sydney Harbour, it is widely regarded as one of the world's most famous and distinctive b ...

in Sydney in 1957. The Australian branch of Steensen & Varming Australia (later to be known as Steensen Varming) was led by Vagn Prestmark a partner from the Danish Steensen & Varming firm. Prestmark established Steensen Varming in Australia in 1957 and the company was permanently established in Australia in 1973. Steensen & Varming was not well known in Australia prior to the Sydney Opera House, it was however well established in Europe with offices in

Dublin Dublin is the capital and largest city of Republic of Ireland, Ireland. Situated on Dublin Bay at the mouth of the River Liffey, it is in the Provinces of Ireland, province of Leinster, and is bordered on the south by the Dublin Mountains, pa ...

Belfast Belfast (, , , ; from ) is the capital city and principal port of Northern Ireland, standing on the banks of the River Lagan and connected to the open sea through Belfast Lough and the North Channel (Great Britain and Ireland), North Channel ...

London London is the Capital city, capital and List of urban areas in the United Kingdom, largest city of both England and the United Kingdom, with a population of in . London metropolitan area, Its wider metropolitan area is the largest in Wester ...

Edinburgh Edinburgh is the capital city of Scotland and one of its 32 Council areas of Scotland, council areas. The city is located in southeast Scotland and is bounded to the north by the Firth of Forth and to the south by the Pentland Hills. Edinburgh ...

and

and employed over 500 people by 1973. When Utzon resigned from the Sydney Opera House in 1966, Steensen & Varming continued as the mechanical consultants ultimately delivering the design, documentation, contract administration and detailed site supervision of all mechanical, hydraulic and fire protection services, including the controls and supervisory system. Steensen Varming's most known contribution to the Sydney Opera House, was the design for the water

heat pump A heat pump is a device that uses electricity to transfer heat from a colder place to a warmer place. Specifically, the heat pump transfers thermal energy using a heat pump and refrigeration cycle, cooling the cool space and warming the warm s ...

system. The architects and engineers agreed that constructing a boiler chimney stack or a cooling tower, would not be in keeping with the design of the Opera House, which ruled out the two normal approaches for large-scale air conditioning. Steensen Varming provided the design solution in using a heat pump system, which used water from the harbour as the cooling agent. There were three main considerations which led to the design of the Opera House air conditioning as a heat pump system, the availability of the waters of Sydney harbour as a heat sources and sink, the aesthetics and the savings that could be achieved with a water-to-water heat pump. Three pumps draw water from

Circular Quay Circular Quay is a harbour, former working port and now international passenger shipping terminal, public piazza and tourism precinct, heritage area, and transport node located in Sydney, New South Wales, Australia, on the northern edge of the ...

, the water is filtered to remove debris and then passes through tubes and is discharged into the harbour at the opposite side of the Opera House. Fresh water circulates between the heat exchanger shells and the shells of the condenser and evaporators of three centrifugal chillers / heat pump sets. The design innovation and technical expertise demonstrated in this landmark project subsequently led to the awarding of other projects in Australia to the Steensen Varming practice. The engineering construction of the Sydney Opera House was featured in a

National Geographic ''National Geographic'' (formerly ''The National Geographic Magazine'', sometimes branded as ''Nat Geo'') is an American monthly magazine published by National Geographic Partners. The magazine was founded in 1888 as a scholarly journal, nine ...

BBC The British Broadcasting Corporation (BBC) is a British public service broadcaster headquartered at Broadcasting House in London, England. Originally established in 1922 as the British Broadcasting Company, it evolved into its current sta ...

production hosted Richard Hammond called

Engineering Connections ''Richard Hammond's Engineering Connections'' is a British documentary series originally broadcast on the National Geographic Channel, and later on BBC2. It is presented by Richard Hammond, and looks at how engineers and designers use historic ...

. The programme aired in Australia on 13 March 2010. Part of the documentary featured the seawater heat rejection system originally designed by Steensen Varming and assistance on this documentary was provided by Steensen Varming who acted as technical liaison to the production team.

Australian projects

Ian Thorpe Aquatic Centre

Steensen Varming was the first Australian organisation to win an Award of Excellence from the

International Association of Lighting Designers The International Association of Lighting Designers (IALD) is a learned society of architectural lighting designers founded in 1969 and based in Chicago. History In 1969, a group of lighting designers — including Ray Grenald and Howard Bran ...

for the lighting of the Ian Thorpe Aquatic Centre, Sydney. The Ian Thorpe Aquatic Centre was one of the last architectural designs by the architect

Harry Seidler Harry Seidler (25 June 19239 March 2006) was an Austrian-born Australian architect who is considered to be one of the leading exponents of Modernism's methodology in Australia and the first architect to fully express the principles of the Bauh ...

and was completed in 2008.

The Mint, Historic Houses Trust Australia

The

Sydney Mint The Sydney Mint in Sydney, New South Wales, Australia, is the oldest surviving public building in the Sydney central business district. Built between 1811 and 1816 as the southern wing of the Sydney Hospital, it was then known as the ''Rum Hospi ...

was recently named as one of 30 projects that have reshaped the built environment since 1978. "The refurbishment project is an example of the Integration of services systems (by Steensen Varming), to provide a modern, functional headquarters while minimising the impact on the heritage and archaeological fabric of a site."

References

External links

* {{Official website Construction and civil engineering companies established in 1933 Danish brands Danish companies established in 1933 Engineering consulting firms Engineering companies of Denmark Engineering companies of Australia Engineering companies of the United Kingdom Engineering companies of the Republic of Ireland Service companies based in Copenhagen Companies based in Copenhagen Municipality