Geothermal for Passive Houses

Transcription

1 7 th Annual North American Passive House conference, Denver, Colorado 7 th Annual North American Passive House Conference September 27-30, 2012 Denver CO Geothermal for Passive Houses o o Ludwig Rongen prof. dipl.-ing. architect and town planner, certified passive house designer RoA RONGEN ARCHITECTS GmbH University of Applied Sciences FH Erfurt, Germany Visiting Professor Southwest Jiaotong University, Chengdu, P. R. of China Visiting Professor Sichuan University, Chengdu, P. R. of China kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkööööööööööööööööööööööööööööööööööööööööööööööööööööööööööö ööö

2 7 th Annual North American Passive House conference, Denver, Colorado 7 th Annual North American Passive House Conference September 27-30, 2012 Denver CO Session Learning Objectives: - To use geothermal efficience even though earth tubes aren t permitted - Optimizing energy efficience by using an ice storage - To handle clinker brick facades thermal bridging free - Cost compare German energy efficience standard by law / Passive House Standard o o kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkööööööööööööööööööööööööööööööööööööööööööööööööööööööööööö ööö

3 Price of crude oil past 100 US $ US $ / Barrel Peak July US $ / Barrel US $ / Barrel ,80 US $ / Barrel

4 7 th Annual North American Passive House conference, Denver, Colorado DIE WELT AKTUELL Costs of goods and services % compared to 2010 The inflation rate was significantly determined by the price trend for energy again fuel oil + 25,4 % diesel und benzine + 12,7 % household energy + 10,3 %

5 Content super thermal insulation airtightness n 50 0,6 /h triple glazed windows thermal bridge free

6 renewable energy sources wind water sun earth

7 A heatpump uses the energy of the environment in the cheapest way earth collector ground probe 3 kwh energy produce out of the environment in consuming only 1 kwh electric energy without any energy costs! Source: solareis isocal

8 day hospital in Cologne - Chorweiler

9 SITE PLAN

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12 DIN 1053 part 1 in the past: (distance between curtain walling and structural wall maximally 150 mm) up to date DIN : maximally 200 mm distance because of the necessary thickness of thermal insulation: 24 cm pursuant to DIN (max. 20 cm) unallowable!

13 static evaluation of the structural performance increasing of numbers of necessary anchorages per m² wall surface and per metre free wall corner increasing of numbers of necessary anchorage factored in U-value-calculation of the wall

14 source: Vika-Ingenieur GmbH 7 th Annual North American Passive House conference, Denver, Colorado Geothermal for Passive Houses 100m 11 C 125m 12 C 150m 13 C 175m 14 C 200m 15 C 225m 16 C heat pump 250m 17 C 275m 18 C ground probes 300m 19 C

15 source: Vika-Ingenieur GmbH 7 th Annual North American Passive House conference, Denver, Colorado Geothermal for Passive Houses water conservation area!!! deep drilling not allowable!!! 100m 11 C 125m 12 C 150m 13 C 175m 14 C 200m 15 C 225m 16 C heat pump 250m 17 C 275m 18 C ground probes 300m 19 C

16 geothermal compound curves (deepness 4 metres)

17 deepness source: Evers engineering office 7 th Annual North American Passive House conference, Denver, Colorado Geothermal for Passive Houses principle of geothermal compound curves leaching basin heat pump deepne ss geothermal compound curves geothermal temperature development

18 Investment cost comparison standard building Passive House

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20 COMPARISON OF INVESTMENT COSTS Passive House Standard ca ,- Standard EnEV (German Standard by law for new buildings) ca ,- EXTRA CHARGE for PASSIVE HOUSE-STANDARD 5,35 %

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27 sun, earth, air, water and heat pump ice storage for primary energy buffer

28 STORING WARMNESS + COLDNESS using summer heat in the next winter period and reversing! using day heat by night and reversing! using the warmness + coldness of a heat pump likewise Source: solareis isocal

29 heat storing in a subterranean storage in a low level without any thermal losses

30 heating with ice????? A high primary source temperature is guaranteed by - permanent recharging with earth heat - ambient heat crystallisation heat is used only in the cases of: - renewable energy sources of earth (air and sun) are not sufficient so that the system must use it s reserves - the resulting ice (because of the phase changing) will later be used for cooling Source: solareis isocal

31 earth collector A heatpump uses the energy of the environment in the cheapest way ground probe ice storage The solar ice system exploits five renewable energy components Source: solareis isocal

32 sun air five renewable energy sources play optimally together earth water ice solar energy ice energy Source: solareis isocal

33 components of the solar ice system solar air collector solar air-collector extracts warmness of the sun + warm air also in case of clouds + diffuse radiation energy gain > typical solar installation storing of surplusses in summer into solar ice-storage Solar ice storage below the freezing limit control system sole/water heat pump solar ice-storage insulation is not necessary because of ambient geothermal winter: heat is extracting out of the ice storage heat pump feeds the heat into the ice-storage and the heating system during phase changing from water to ice large amounts of crystallization energy are released the ice is useable for cooling now heat pump extracts heat out of the solar ice-storage and feeds the heat into the water storage cuncurrently it supplies the rooms with heat control system controls the system and decides - when is warmness injecting into the ice storing -when shall the rooms be supplied with heat only by using the heat pump Source: solareis isocal

34 optimal use of solar energy and ambient heat solar air collector absorbes solar energy in the horizontal + absorbes ambient air in the vertikal even on cloudy days Source: solareis isocal

35 the ice avoids further extraction of heat with increasing thickness contrary to plate heat exchangers with constant surface an ice cylinder which increases the surface is formed around the heat exchanger tube the larger surface compensates for the poor insulation and ensures the constant heat extraction

36 average medium temperature (degree Celsius) 7 th Annual North American Passive House conference, Denver, Colorado Geothermal for Passive Houses continuous output of geothermal probes undisturbed subsoil temperature time temperature profile of the circulating heat transport medium in the probes d u r a t i o n of s i m u l a t i o n [ m o n t h s ] temperature in accordance with VDI 4640, page 2 the new VDI 4640 will demand a sharper approach for the interpretation of ground probes the above presentation is taken into account then this will result larger probe lengths and higher investment costs Source: solareis isocal

37 Source: solareis isocal 7 th Annual North American Passive House conference, Denver, Colorado Geothermal for Passive Houses Investment- and operating costs in Investitionsa time period und Betriebskosten of 15 in years 15 Jahren investment for heating operating costs for heating oil condensing boiler Ölbrennwertkessel gas condensing boiler Gasbrennwertkessel pellet heating Pelletsheizung air heat pump Luft-Wärmepumpe sole heat pump ground probe Sole-WP Erdsonde sole heat pump ice storage Sole-WP Eisspeicher

38 Investitions- und Betriebskosten in 15 Jahren investment- and operating costs in a time period of 15 years investment for heating investment for cooling operating costs for heating operating costs for cooling oil condensing boiler Ölbrennwertkessel gas condensing boiler Gasbrennwertkessel pellet heating Pelletsheizung air heat pump Luft-Wärmepumpe Sole heat pump ground probe Sole-WP Erdsonde Sole heat pump ice storage Sole-WP Eisspeicher Source: solareis isocal

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44 220 kwh/(m² a) 15 kwh/(m² a) savings in energy consumption 93,2 %

45 winner of the germanwide competition municipal climate protection st price price money Euros

46 THANK YOU VERY MUCH FOR YOUR ATTENTION