By Jarek Kurnitski (auth.), Jarek Kurnitski (eds.)
Cost optimum and approximately 0 strength functionality degrees are ideas initiated by means of the ecu Union’s (EU) strength functionality of structures Directive which was once recast in 2010. those can be significant drivers within the building quarter within the following few years, simply because all new structures within the european from 2021 onwards are anticipated to be approximately 0 power constructions (nZEB).
This ebook introduces the technical definitions, method limitations, strength calculation technique and enter facts had to set basic power established minimum/cost optimum and nZEB necessities in nationwide strength frames. labored examples are supplied to demonstrate the calculation of introduced, exported and first power, and renewable strength contribution. 5 case stories of excessive functionality nZEB place of work structures throughout Europe are suggested to teach replacement technical options and to attract a few normal layout principles in response to accomplished nZEB structures. particular good points of the nZEB layout strategy, particularly within the early levels, and architectural competitions are incorporated. those describe very important layout concerns within the scoping and conceptual layout section, permitting layout streams to be managed in order that unique objectives may be met.
This ebook is meant for readers who have to be conscious of or are operating with the power functionality of constructions – for determination makers in private and non-private sectors, architects, engineers, building consumers, experts, contractors, brands and students.
The editor of this booklet, Professor Jarek Kurnitski has made significant contributions to the training of the ecu REHVA nZEB technical definition and has constructed strength calculation frames for present Estonian and Finnish strength functionality laws. he's the chief of nZEB learn at Tallinn collage of expertise in Estonia and Aalto college in Finland, and he has over three hundred publications.
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Additional resources for Cost Optimal and Nearly Zero-Energy Buildings (nZEB): Definitions, Calculation Principles and Case Studies
11. 4 On-Site CHP Production The following input data are considered for the calculation example: • • • • • Energy need for heating (space heating, supply air heating, and DHW) 35 Electricity need 30 Thermal renewable production on site 10 Electric renewable production on site 9 Combined heat and power on site: – – – – – Gas use 100 Produced heat 45 Thermal losses 20 Produced electricity 35 Auxiliary energy 0 (for simplicity). 28 J. 0 On site Nearby Distant – – – Fig. 11 Calculation example of the energy flows in nZEB office building with nearby production With this input data, the delivered gas becomes 100.
For cooling, free cooling from boreholes (about 1/3 of the need) is used, and the rest is covered with mechanical cooling. 5. To simplify the calculation, emission and distribution losses of the heating and cooling systems are neglected in this example. 6 kWh/(m2 a) electricity. 0 is exported to the grid. Energy calculation results are shown in Fig. 10, in the building technical system box. 2 kWh/(m2 a) fuel energy. 5, respectively. 8 kWh/(m2 a). 8 kWh/ (m2 a). 0 kWh/(m2 a), is exported. 2 kWh/(m2 a).
To compare requirements for houses with ground source heat pumps, the net energy demand for space, ventilation, and hot water heating can be compared. 5 for domestic hot water heating, Fig. 2. Similar to Fig. 1, the maximum allowed delivered energy for apartment and office buildings is shown in Fig. 3. District heat is considered as heat source, but the results will be similar with a gas boiler. Appliances and lighting are not included in apartment buildings, but in the office buildings, lighting is included in the delivered energy.
Cost Optimal and Nearly Zero-Energy Buildings (nZEB): Definitions, Calculation Principles and Case Studies by Jarek Kurnitski (auth.), Jarek Kurnitski (eds.)