Abstract
Nowadays, we can come across different concepts related
to Zero-Energy Buildings. Despite having common
perspectives for reducing the environmental impacts, the
methods and specific targets are different in different
concepts. This paper reviews the terminology and
calculation methods used in the two concepts of Net-Zero
Energy Buildings (NZEB) and Nearly-Zero Energy Buildings
(nZEB).
It is concluded that despite sounding similar, different
solutions will be reached by the two concepts due to
different definitions, approaches, and set-targets. The
NZEB aims at achieving the balance between the imported
and exported energy in terms of a defined metric, while
the nZEB will be reached when the best combinations of
the available energy-related technologies assigned to a
building are used and a minimum primary energy import is
resulted. However, it does not necessarily mean that a
nZEB will come very close to the zero balance. In the
nZEB, a first step in the implementation is finding the
cost-optimal solution, which relates the primary energy
consumption with the life-cycle cost of the parameters of
energy-conservations measures in the buildings envelope
and the on-site energy generation. The paper presents the
implementation of the two concepts in two case studies.
Original language | English |
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Title of host publication | Proceedings of the Sixth International Conference on Heating, Ventilation and Air-Conditioning, ICHVAC6-2015 |
Publisher | Building and Housing Research Center BHRC |
Number of pages | 9 |
Publication status | Published - 2015 |
MoE publication type | Not Eligible |
Event | 6th International Conference on Heating, Ventilating and Air Conditioning, ICHVAC-6 - Tehran, Iran, Islamic Republic of Duration: 26 May 2015 → 28 May 2015 |
Conference
Conference | 6th International Conference on Heating, Ventilating and Air Conditioning, ICHVAC-6 |
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Abbreviated title | ICHVAC-6 |
Country/Territory | Iran, Islamic Republic of |
City | Tehran |
Period | 26/05/15 → 28/05/15 |
Keywords
- net
- nearly
- zero energy guildings
- cost-optimality calculations
- building simulations
- optimization