{"id":17106,"date":"2021-06-01T15:46:00","date_gmt":"2021-06-01T12:46:00","guid":{"rendered":"https:\/\/www.sweco.fi\/?post_type=showroom_cpt&p=17106"},"modified":"2022-12-05T18:35:29","modified_gmt":"2022-12-05T16:35:29","slug":"soihtu-student-housing-towers","status":"publish","type":"showroom_cpt","link":"https:\/\/www.sweco.fi\/en\/projects\/soihtu-student-housing-towers\/","title":{"rendered":"Soihtu student housing towers"},"content":{"rendered":"
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Soihtu student housing towers<\/h1>\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t<\/div>\n\n\t\t\n\t\t
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\n\t\t\t\t\tProject<\/em>\t\t\t\t\t

Renovation of the Soihtu student housing towers (A\u2013E, Kortepohja, Jyv\u00e4skyl\u00e4) <\/p>\t\t\t\t<\/div>\n\t\t\t\t\t\t\t

\n\t\t\t\t\tClient<\/em>\t\t\t\t\t

Student Union of the University of Jyv\u00e4skyl\u00e4 (JYY) \/ Soihtu<\/p>\t\t\t\t<\/div>\n\t\t\t\t\t\t\t

\n\t\t\t\t\tImplementer<\/em>\t\t\t\t\t

Sweco Building service systems<\/p>\t\t\t\t<\/div>\n\t\t\t\t\t\t\t

\n\t\t\t\t\tCommission<\/em>\t\t\t\t\t

HVAC and building services engineering and related oversight<\/p>\t\t\t\t<\/div>\n\t\t\t\t\t\t\t

\n\t\t\t\t\tYears of implementation<\/em>\t\t\t\t\t

2016\u20132022<\/p>\t\t\t\t<\/div>\n\t\t\t\t\t\t\t

\n\t\t\t\t\tBudget<\/em>\t\t\t\t\t

approx. EUR 48.5 million<\/p>\t\t\t\t<\/div>\n\t\t\t\t\t\t\t

\n\t\t\t\t\tScope<\/em>\t\t\t\t\t

27,000\u202fkm2 <\/p>\t\t\t\t<\/div>\n\t\t\t\t\t\t\t

\n\t\t\t\t\tNumber of flats<\/em>\t\t\t\t\t

approx. 150 per building, total 720<\/p>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\n<\/section>\n\n\n\n\n\n\n\n\n

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Renovation improves the energy efficiency and comfort of student housing in Jyv\u00e4skyl\u00e4<\/h2>\n

The 50-year-old student housing towers in the Kortepohja district of Jyv\u00e4skyl\u00e4 have been refurbished one at a time in recent years. In addition to the updated yards and shared use facilities, Sweco\u2019s HVAC and building services engineers found energy-efficient and comfort-improving technical solutions for the buildings.<\/p>\n

The Soihtu business unit of the Student Union of the University of Jyv\u00e4skyl\u00e4 (JYY) began planning the renovation of the Kortepohja student housing towers in 2016. The aim was to modernise the technical solutions of the five buildings (A\u2013E) completed between 1968 and 1972. Construction was not considered because the building facades are protected and the students are satisfied with the distribution of the housing units.<\/p>\n

\u201cDemand remains highest for studio flats, of which the towers contain 720 in total,\u201d says Soihtu\u2019s Chief Real Estate Officer\u00a0Kimmo Moilanen<\/strong>. At the same time, the Rentukka restaurant between the A and B buildings was refurbished to serve as a living room for the students. \u201cThe average floor area of the flats is only 21 square metres, so we added services such as a lunch restaurant and gym to Rentukka to facilitate day-to-day living.\u201d<\/p>\n

The renovation will also improve the buildings\u2019 yard areas, and Sweco\u2019s HVAC experts helped design stormwater management on the challenging plot. The area features a web of criss-crossing power, district heating and water pipes. \u201cMoreover, groundwater is fairly high up in the area, which means that rainwater cannot be absorbed into the soil, but retention is possible,\u201d says Sweco\u2019s\u00a0Hannu Purola<\/strong>, who was responsible for the control of HVAC and building services engineering.<\/p>\n

Suitable indoor temperatures in summer and winter<\/h3>\n

One of the most important targets of the renovation was the buildings\u2019 HVAC and building services solutions. Clogs and leaks had been observed in the old cast iron sewer piping. \u201cWe wanted to improve comfort and energy efficiency, and connect the technical solutions to a remotely-monitored building automation system,\u201d Moilanen says.<\/p>\n

In terms of indoor conditions, it was key to take the buildings\u2019 vast wall surfaces into account, as they increase indoor temperatures during warm periods in summer. \u201cWe carried out temperature simulations and opted to equip the flats with extractor hoods that enable 6\u20138 hours of overnight cooling instead of the normal 90\u2013120 minutes,\u201d Purola explains. The occupants are also advised on how to use the new technology and save energy.<\/p>\n

In order to confirm the conditions and gain an overview of the building\u2019s heat balance, the HVAC engineers measured the room temperatures of the corner flats, which cool down first in winter. \u201cThe heating system\u2019s faults are revealed quickly when the automation notifies maintenance of the corner flats becoming colder.\u201d<\/p>\n

Building age does not preclude energy-efficient technical solutions<\/h3>\n

In 2020, JYY published a climate sustainability roadmap which aims for carbon neutrality by 2025. \u201cFor the towers, the relevant values have been adhered to from the start,\u201d Moilanen says.<\/p>\n

Energy-efficient technology has been used in every tower, even though many of the solutions are more typical in the construction of new buildings. \u201cWe were able to make the mechanical air\u00a0supply and extraction work despite the buildings being old and protected,\u201d Purola explains. \u201cIn addition to this, we were able to equip the towers with modern heat recovery solutions.\u201d<\/p>\n

Different solutions were needed in the first two towers, because sauna facilities were built in the attic floor: we had to make room for the ventilation machinery elsewhere. \u201c16 ventilation units have been distributed across the corridor ceilings of buildings A and B, and extraction is handled with two roof extractors,\u201d Purola says. \u201cThe heat pump recycles up to 70% of the heat inside the building.\u201d<\/p>\n

Information models facilitate worksite control<\/h3>\n

The need for arranging competitive bidding for the engineering and control was assessed separately for each tower. For this reason, the parties involved have remained largely the same. \u201cThis has enabled us to refine the details with each new building to be renovated,\u201d Moilanen says. He also feels that the decision to centralise HVAC and building services engineering and oversight to Sweco was a good one. \u201cAll aspects of the worksite and design collaboration have worked well.\u201d<\/p>\n

In terms of control, the information models have been very helpful. \u201cBuilding services engineering contractors in Jyv\u00e4skyl\u00e4 are well-informed, and the information model has been used by the supervisors and worksite manager through their smartphones,\u201d Purola explains happily. The model has helped with modifying the plans as needed. \u201cWe have been able to use the information model to determine alternative routes for the technical solutions, should the need arise.\u201d<\/p>\n

HVAC and building services contracting in Jyv\u00e4skyl\u00e4 is at such a good level that the overseer mostly only needs to ensure that the overall HVAC processes work in the way intended by the designer. \u201cThis ensures that all individual solutions serve a successful end result.\u201d<\/p>\n

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<\/i><\/figure>\n

\u201cWe wanted to improve comfort and energy efficiency, and connect the technological solutions to a remotely-monitored building automation system.\u201d
\n– Kimmo Moilanen, Soihtu<\/p>\n

\u201cIn 2020, JYY published a climate sustainability roadmap which aims for carbon neutrality by 2025. For the towers, the relevant values have been adhered to from the start,\u201d Moilanen says.
\n– Kimmo Moilanen, Soihtu<\/p>\n

\u201cSince the parties involved have remained largely the same, we have been able to refine the details with each new building to be renovated.\u201d
\n– Kimmo Moilanen, Soihtu<\/p>\n

\u201cAll aspects of the worksite and design collaboration have worked well.\u201d
\n– Kimmo Moilanen, Soihtu<\/p><\/blockquote>\n\t\t<\/div>\n\t<\/div>\n<\/div>\n<\/section>\n","protected":false},"excerpt":{"rendered":"

The 50-year-old student housing towers in the Kortepohja district of Jyv\u00e4skyl\u00e4 have been refurbished one at a time in recent years. In addition to the updated yards and shared use facilities, Sweco\u2019s HVAC and building services engineers found energy-efficient and comfort-improving technical solutions for the buildings.<\/p>\n","protected":false},"featured_media":7866,"template":"","showroom_cats":[163,167],"showroom_expertise":[],"showroom_partners":[],"showroom_location":[],"showroom_client":[],"class_list":["post-17106","showroom_cpt","type-showroom_cpt","status-publish","has-post-thumbnail","hentry","showroom_cats-buildings-and-urban-areas","showroom_cats-residential"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.sweco.fi\/en\/wp-json\/wp\/v2\/showroom_cpt\/17106","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sweco.fi\/en\/wp-json\/wp\/v2\/showroom_cpt"}],"about":[{"href":"https:\/\/www.sweco.fi\/en\/wp-json\/wp\/v2\/types\/showroom_cpt"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.sweco.fi\/en\/wp-json\/wp\/v2\/media\/7866"}],"wp:attachment":[{"href":"https:\/\/www.sweco.fi\/en\/wp-json\/wp\/v2\/media?parent=17106"}],"wp:term":[{"taxonomy":"showroom_cats","embeddable":true,"href":"https:\/\/www.sweco.fi\/en\/wp-json\/wp\/v2\/showroom_cats?post=17106"},{"taxonomy":"showroom_expertise","embeddable":true,"href":"https:\/\/www.sweco.fi\/en\/wp-json\/wp\/v2\/showroom_expertise?post=17106"},{"taxonomy":"showroom_partners","embeddable":true,"href":"https:\/\/www.sweco.fi\/en\/wp-json\/wp\/v2\/showroom_partners?post=17106"},{"taxonomy":"showroom_location","embeddable":true,"href":"https:\/\/www.sweco.fi\/en\/wp-json\/wp\/v2\/showroom_location?post=17106"},{"taxonomy":"showroom_client","embeddable":true,"href":"https:\/\/www.sweco.fi\/en\/wp-json\/wp\/v2\/showroom_client?post=17106"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}