Elope-Analysis

1. Energy consumption at IWZ Campus

floor space active energy load peak

electricity

(all

buildings)

93.123

sqm 5.600 MWh/a 60 kWh/(m²a) 1.664 kW

gas

(main

building)

78.559

sqm 10.400 MWh/a 132 kWh/(m²a) 6.124 kW

district heat

(old building)

19.564

sqm 1.379 MWh/a 70 kWh/(m²a)

Electricity consumers: light, multimedia, laboritaries, building equipment, mensa,

decentral water heating

Warmth consumers: heating

Picture 1: building standards

Picture 2: energiestardards as per energiepass (www.wikipedia.de)

- Heat Conspumtion

o main building: WSVO 1995

o old building: achives EnEV 2009

-> in future less consumption needed for main building -> standard Zero-

Energy-House better Plus-Energy-House

The EEWärmeG from 2009 claims using of renewable energy for heating in new-

built buildings

At least:

15% trought solar energy or

30% throught biogas or

50% throught solid / fluid biomass or

50% throught geothermal or environment warmth

2. Central or decentral supply system

- Basic question

- Depends on architecture and use

- We decided to have decentralised campus

central decentral

plus - only on main supply

system

- less maintenance

- flexible -> different buildings

don’t depend on each other -

> easy renovation, selling…

- can be used as experimental

equipment for students

- different systems possible

- easier regulation: because

smaller system

- less losses through

transportation

negative - no flexibility

- when broke, hole

building effected

- More maintenance

- More controlling

- inbetween solution: grouped supply ->nearby buildings can share systems

-> redundancy

- different systems for student work -> means more space in technical

rooms ->gives insight in real situation

- in transit time: only one system needs to run

- these point for heating, cooling, climatization

- water heating-> decentral ->because in university small hot water

consumption

3. Different senarios to achieve energy covering

- block heat and power plant

- to cover warmth in winter

- produce electric energy

Picture 3: block heating station (360grad-mainz.de)

- to use waste heat in summer there should be used a cooling machine with

can be powered with hot water

- two different options

- adsorber and absorber

Picture 4: absorber cooling machine (source: berliner energieagentur)

Picture 5: adsorbercooling machine (source: berliner energieagentur)

- use photovolataic panels to produce electric energy

Picture 6: net- coupled photovoltaic systems (www.kachelofen-dotzauer.de)

- another possibility to produce warmth in winter or/and for cooling

machines

- heat pump

- can be fed by air or ground soil ->bigger potential with soil feeding

Picture 7: heat pump (www.geoprodesign.com)

- alternative wood pellet heating system

- disadvantage: big storage space for pellets needed

Picture 8: wood pellet heating system (www.depi.de)

- additional option: calorific value boiler

Picture 9: calorific value boiler (www.innenwerk.de)

Some possibilities to reduce consumption

• tight/ isolated building envelope

• small transient value

• in summer external sunblind

• right using of natural ventilation

• smart grid systems (http://en.wikipedia.org/wiki/Smart_grid)

• good regulation of the systems

• promote users awareness for right use

• presents detectors for light

• energy saving equipment