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Featured researches published by Juhani Heljo.


Procedia. Economics and finance | 2015

Heat Loss Rate of the Finnish Building Stock

Jaakko Vihola; Jaakko Sorri; Juhani Heljo; Paavo Kero

Abstract This paper presents a bottom-up model for studying the heat loss rateof the building stock.The model is a step towards more complex building-stock power modeling,whose goal is topredictthe sources and the amount of demand response potentialunderdifferent conditions. The heat loss rateisthefractionof thermal power needed to compensate for the heat loss via exterior walls, windows, roofs, floors and ventilation in the buildings. The heat loss rate depends on the physical characteristics of the building envelope and ventilation andon weather conditions. We first examine the current state of power and energy modeling. We then describe the research object of this studyand the calculation method. The calculation results presented in the third section are illustrated at the hourly level, sorted by the main source of the heating energy of the building. In addition to the analysis of the building stock level, the heat loss ratewas calculated on a building level using some typicalbuilding information models for validation purposes. The validation indicated that the results obtained with the two methods were consistent and that the order of magnitude was reasonable. The Finnish building stock was used as a research objectin the demonstration of the model.Finally,some further needs for research are discussed.


Journal of Cleaner Production | 2014

Modeling and visualization of residential sector energy consumption and greenhouse gas emissions

Maija Mattinen; Juhani Heljo; Jaakko Vihola; Antti Kurvinen; Suvi Lehtoranta; Ari Nissinen


Archive | 2012

Lämmitystapojen kehitys 2000-2012. Aineistoselvitys

Jaakko Vihola; Juhani Heljo


Archive | 2015

Kysynnän jousto - Suomeen soveltuvat käytännön ratkaisut ja vaikutukset verkkoyhtiöille (DR pooli). Loppuraportin tiivistelmä

Pertti Järventausta; Sami Repo; Petri Trygg; Antti Rautiainen; Antti Mutanen; Kimmo Lummi; Antti Supponen; Juhani Heljo; Jaakko Sorri; Pirkko Harsia; Martti Honkiniemi; Kari Kallioharju; Veijo Piikkilä; Jaakko Luoma; Jarmo Partanen; Samuli Honkapuro; Petri Valtonen; Jussi Tuunanen; Nadezda Belonogova


Archive | 2018

Suomalaiset sähkön käyttäjinä ja tuottajina : valmius kysyntäjoustoon ja omakohtaiseen sähköntuotantoon

Ilkka Ruostetsaari; Kirsi Kotilainen; Pami Aalto; Pirkko Harsia; Juhani Heljo; Pertti Järventausta; Kari Kallioharju; Matti Kojo; Fanni Mylläri; Anna Pääkkönen; Sami Repo; Jaakko Sorri; Sanna Uski


Archive | 2016

Rakennusten energiankulutuksen perusskenaario Suomessa 2015-2050

Maija Mattinen; Juhani Heljo; Mikko Savolahti


Archive | 2016

Modeling of Finnish building sector energy consumption and greenhouse gas emissions – specification of POLIREM policy scenario model

Maija Mattinen; Juhani Heljo


Archive | 2016

Miten toteutetaan resurssitehokkaampi ja ilmastoneutraali sähköenergiajärjestelmä

Pami Aalto; Pirkko Harsia; Juhani Heljo; Jari Ihonen; Hannele Holttinen; Pertti Järventausta; Matti Kojo; Jukka Konttinen; Heidi Krohns-Välimäki; Anna Kulmala; Pinja Lehtonen; Kimmo Lummi; Antti Rautiainen; Ontrei Raipala; Sami Repo; Topi Rönkkö; Matti Vilkko; Pasi Toivanen; Seppo Valkealahti


Archive | 2016

Pohjoismaiden energiapolitiikka 2030 : hiilineutraalimpaan energiajärjestelmään osin yhdessä, osin eri polkuja pitkin

Pami Aalto; Pirkko Harsia; Juhani Heljo; Hannele Holttinen; Iida Jaakkola; Pertti Järventausta; Johanna Kirkinen; Matti Kojo; Jukka Konttinen; Anna M Oksa; Topi Rönkkö; Jaakko Sorri; Pasi Toivanen


Archive | 2016

Tammikuun tehopiikki – mitä tapahtui 7.1.2016? Miten tehoa hallitaan paremmin jatkossa?

Juhani Heljo; Pirkko Harsia; Hannele Holttinen; Pami Aalto; Tomas Björkqvist; Pertti Järventausta; Jari Kaivo-oja; Matti Kojo; Timo Korpela; Antti Rautiainen; Sami Repo; Ilkka Ruostetsaari; Jaakko Sorri

Collaboration


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Jaakko Sorri

Tampere University of Technology

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Jaakko Vihola

Tampere University of Technology

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Pertti Järventausta

Tampere University of Technology

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Pirkko Harsia

Tampere University of Applied Sciences

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Sami Repo

Tampere University of Technology

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Antti Rautiainen

Tampere University of Technology

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Hannele Holttinen

VTT Technical Research Centre of Finland

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Maija Mattinen

Finnish Environment Institute

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