www.heatingandventilating.net The equipment in conventional buildings is based on the international
standard DIN 18015-RAL-RG678 for the installation of electrical systems in (residential) buildings (three-star comfort equipment). The differentiation of the smart building variants is based on previous internal university research results. The basic equipment includes typical entry-level functions for comfort, safety and energy saving. In addition to the basics, further lighting, heating and security functions are included in the full equipment versions. The cost calculation for the individual equipment options is based on a
standardised calculation aid for electrical and information technology trades (status 2020) as well as the current publically available product catalogues from representative providers such as Hager (for KNX) and Eltako (for EnOcean).
Smart costs - wireless is lower cost in comparison
A comparison of the conventional installation with the smart equipment reveals an unsurprising picture: Smart costs initially more. According to the study, the surcharge for the electrical installation is between 64% in the one-room area with basic equipment based on EnOcean and 385% in the medium area based on KNX2 When comparing the smart building variants “wired” or “wireless”, wireless is
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significantly lower in costs. With comparable functionality, the difference is 20 to 30 per cent. This applies to all buildings and equipment variants in the study. This is due to the higher expense of cabling and the cost of the wired devices and their installation. In contrast, maintenance-free wireless sensors require neither mains power nor batteries. Thanks to energy harvesting technology, they collect their energy from the environment (kinetic energy, light or temperature differences). Wireless sensors can be simply placed wherever they are needed. This saves time and money during installation and operation and at the same time enables quick and easy retrofitting in existing buildings.
What about electro-smog in wireless smart buildings?
The radiation exposure is 700 times lower than that of WLAN or Bluetooth connections and 1.6 million times lower than conventional smartphones. The so- called SAR (Specific Absorption Rate) is the decisive here, indicating the maximum amount of transmission power the human body can absorb.
Conclusion
The intelligently networked area initially costs more. But these investments are well worthwhile in the medium and long term for SMEs in terms of increased comfort and well-being as well as lower energy costs. The installation costs of the wireless smart spaces are up to one third less than the equivalent wired version. They also score points in terms of flexibility and environmental protection.
TYNEHAM
AIR SOURCE HEAT PUMP
WESSEX MODUMAX MK3 LOW NOx
your low carbon hybrid heating system
Controls & smart buildings CREATE
Let’s discuss your low carbon future
01202 662500
enquiries@hamworthy-heating.com
hamworthy-heating.com
EnOcean Alliance - Multisensor
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