Does NZEB pose a conflict to Good Indoor Air Quality? REHVA summit November 2017

Transcription

1 Does NZEB pose a conflict to Good Indoor Air Quality? REHVA summit November 2017 Version:

2 Niels Christensen Strategic Product Manager, ICS Version:

3 Lindab Group at a glance Share of net sales per market Nordic 47% CEE/CIS 17% Other Markets 3% Western Europe 33% Net sales SEK 7,8 bn 3 5,100 employees 32 countries 137 branches 24,000 customers

4 Products & Solutions Complete offering of solutions Indoor climate solutions Examples Ventilation products Examples Building solutions Examples Share of Group sales Share of Group sales Share of Group sales Fire & smoke Examples Air movement Examples Rainwater and building products Examples Share of Group sales Share of Group sales Share of Group sales 4 Share of Group Sales Version:

5 Let the trend be your friend DRIVERS: ENVIRONMENT LEGISLATION ENERGY EFFICIENCY INTELLIGENT BUILDINGS NEW MATERIALS URBANISATION GLOBAL ECONOMY Low energy building concepts Focus on indoor air quality and fire protection Increased role of IoT in managing/ improving energy efficiency Centralised control units for indoor climate systems Self-service ecommerce concepts Intelligent control systems will dominate buildings Lindab residential solutions Closer corporation with strategic AHU and Fan partners Fire and Smoke new strategic focus Fans and AHU new strategic focus UltraLink IoT strategy and concept Building systems with nearly zero energy Nearly Zeroenergy Buildings by % More than 90% of the environmental impact from a building is from its energy use 40% Buildings are responsible for 40% of the energy consumption in EU 30% Improving climate control and air quality monitoring generates up to 30% energy savings Version:

6 Focus on innovation To attract highly skilled employees of tomorrow, every year we welcome a large number of students. We have a close cooperation with various universities around the world, eg. the Technical University of Denmark (DTU) and Aalborg University on development and research on specific indoor climate projects.

7 Focus on innovation Facility specifications Room size L x W x H 14 x 14 x 15 m (adjustable ceiling height) Air capacity Total air volume: 8000 m3/h Inlet temperature: C Water capacity Total water volume: 1800 l/h Inlet temperature: C Heated/chilled room surfaces Room walls can be heated or chilled to simulate exterior facades. Simulation of Internal loads from equipment and people Furnishing Test rooms can be partially furnished to simulate reality

8 8 lindab we simplify construction

9 From product to system Airborne solution Waterborne solution 9 CAV/VAV/Natural Ventilation only with air Cooling direct with outdoor air High summer power or recirculation of air Change-over or separate heating CHILLED BEAMS/FANCOIL Smaller ventilation system and building height Separate water system Re-circulation of air in each room Cooling and heating in parallel

10 Example of how NZEB support the use of new technology High temperature cooling and Low temperature heating One water circuit is simultaneously used for heating and cooling No need for simultaneously running heating and cooling units No regulation equipment or insulation of pipes

11 Chilled beam The Lindab Solus beam Great capacity at extreme low temperature heating and high temperature cooling Counter flow heat exchanger battery Example 3,0 m Solus beam in a 25 C room Air = 25 l/s at 100 Pa, 20 C Water = 20 C in - 23 C out Total cooling capacity = 700W

12 System description Spring and Autumn High Temperature Cooling (HTC) and Low Temperature Heating (LTH) Either the heating or cooling unit needs to be running. But not both at the same time Needed inlet temperature reached fully or partially by mixing the return water Savings of about 18% on energy usage for heating and cooling

13 Total energy savings Total energy savings When comparing the total energy use of conventional and Solus system, energy savings of approximately 17-18% can be achieved. This is due to: - Heat transfer between rooms - Higher free cooling potential - Higher COP of heating and cooling machine

14 Summary No regulation valves, actuators etc. Continuously running system. No need for regulation on individual beams. No need of pipe Insulation, neither on ducts. Free cooling High Temperature Cooling results in more free cooling. No radiators or pipes for heating Heating is delivered by the Solus system. No need for a separate radiator system. Recycled energy use The Solus circuit is keeping the thermal energy in the building. Only the difference between heating and coling demand in the rooms has to be submitted. Better COP The high cooling water temperature in the Solus system saves energy in the chillers. Renewable energy The Solus circuit system allows a much better energy efficiency when using sustainable energy sources.

15 SOLUS the epoch-making indoor climate solution A temperature balancing chilled beam solution that uses the same water circuit for both cooling and heating at the same time! Runda Huset, Jönköping Sweden

16 Monitoring of the first real-life implementation of the SOLUS system in Jönköping (Sweden) Energy Performance Thermal comfort

17 Monitoring of the first real-life implementation of the SOLUS system in Jönköping (Sweden) Energy Performance Thermal comfort - Measurements of physical parameters (e.g. air temperature, humidity, air velocity) - Questionnaire to occupants

18 Air temperature [ C] Air temperature [ C] lindab we simplify construction Thermal comfort: measurements Measurements of physical parameters in four different locations of an open space office T4 T1 T3 T ,5 23 Winter day T1 T2 T3 T ,5 23 Summer day T1 T2 T3 T4 22,5 22, ,5 21, ,5 20, :00 04:00 08:00 12:00 16:00 20:00 00: :00 04:00 08:00 12:00 16:00 20:00 00:00

19 Percentage % Percentage % lindab we simplify construction Thermal comfort: questionnaire A questionnaire about the perception of the thermal environment in the building was delivered to occupants (based on the ASHRAE 7 points thermal sensation scale) How do you feel at this moment? Winter day Summer day Cold Cool Slightly cool Neutral Slightly warm Warm Hot 0 Cold Cool Slightly cool Neutral Slightly warm Warm Hot 28

20 From product to system Airborne solution Waterborne solution CAV/VAV/Natural Ventilation only with air Cooling direct with outdoor air High summer power or recirculation of air Change-over or separate heating CHILLED BEAMS/FANCOIL Smaller ventilation system and building height Separate water system Re-circulation of air in each room Cooling and heating in parallel

21 Airborne room unit - diffuser lindab we simplify construction The diffuser can handle variable airflow with low draft risk This type of product does not need a motorized air vane to secure coanda effect. 30

22 Simplifying HVAC systems by reducing the number of components. Air quality parameters that can be measured Temperature Presence CO2 VOC Humidity 31

23 Pascal fan pressure lindab we simplify construction 32

24 Simplified DCV* system for a perfectly sustainable indoor climate. *)Demand Controlled Ventilation lindab we simplify construction Pascal energy savings 83% vs CAV 55% vs VAV constant air pressure 26% vs VAV fan optimizer on zone level Pascal saves 26 % energy compared to traditional DCV systems in the market 33

25 Some average energy consumption figures lindab we simplify construction HVAC represents 40 % of the energy consumption for a typical office building* *) Source: HVAC HESS Heating, Ventilation & Air- Conditioning High Efficiency Systems Strategy September 2013, industry.gov.au **) Source: Energy Consumption in the European Built Environment, The Role of Cooling by M. Santamouris September 2013 ***) Compared to traditional DCV systems 34 Pascal saves 3,5 % of the total energy consumption in a typical building***. The average building energy consumption in the European Union countries, varies between 320 kwh/m2/y in Finland and 150 kwh/m2/y in Bulgaria and Spain, with a mean value close to 220 kwh/m2/y. **

26 Products & Solutions Developing the ventilation Ecosystem 35 Version:

27 Residential Solutions Office Solutions Hotel Solutions Hospital Solutions Leisure Solutions Lindab s innovative solutions create ultimate comfort in the buildings of the future Marine and Off shore solutions 36 Version:

28 Thank you Follow us on 37