CASE - Energy renovation of buildings and 4.th Generation of District Heating

Transkript

1 CASE - Energy renovation of buildings and 4.th Generation of District Heating Theodor Møller Moos MSc. Senior Project- and Market Manager, Energy Planning and District Heating 1

2 Albertslund Syd The district Albertslund South was built in Approximately 2,000 homes are built around a canal Along the canal is a canal street with three-storey blocks. On both sides of the main streets are residential areas with either singlestorey atrium houses or two-storey townhouses. Schools and institutions are spread out in the area, and at one end is Albertslund Shopping Centre with a rail-way-station. 2

3 Albertslund Syd - Two-storey townhouses Housing association BO-VEST 544 townhouses October 2012 Dec

4 Albertslund Syd - Two-storey townhouses The energy renovation of buildings reduce heating requirements by 60% The energy frame met with "more insulation" and not through "individual energy production" Low temperature District Heating 55/25 C 4

5 Why lowtemperature (4th Generation DH)? Less conduction losses Larger CHP benefit (which can be produced more electricity on the same amount of fuel) Better utilization of waste heat from process, solar, geothermal and heat pumps Less capital cost to the district heating network 5

6 4th Generation DH The Heat Exchangers Functional requirements for heat exchangers (GVV): Direct heating with shunt for underfloor heating and an outlet for radiators Exchanger for domestic hot water incl. adjusted frequency bypass-bypass Individual differential pressure regulation for hot water and heating A pump Fully insulated unit Primary side: Hot water 50/20 C Primary side: Heating 50/27 C (floor heating) Secondary Site: Hot water 45 C Producing 25 kw hot water during normal operation: 25 kw at 50/20 C with a pressure drop across the heat exchanger to a maximum of 0.1 bar (10 kpa) Legionella Control: Water content in the exchanger must not exceed 0.5 l The exchanger is cold / closed when not dispensing hot water Locating GVV Short distance to the taps for hot water. Maximum 3 liters in line to the farthest tap Short response times and low water wastage 6

7 4th Generation DH - Pipedesign District heating temperature in the pipes are lowered from 80/50 C to 55/25 C Optimized tube design Major insulation thicknesses of district heating pipes TwinPipe Use of plastic materials Heatloss is reduced to 1/2 of traditional DHheating 7

8 4th Generation DH - Operation Optimization of the DH flow temperature ab Heating Plant by TERMIS-TO - Weather forecast - Heating forecast from history - Hydraulic analysis in real time 8

9 4th Generation DH Remote Metering Remote meter reading data analyzed and visualized as highlights / smileys in TERMIS Operation and maintenance of units (user equipment) Energy-efficient performance target (and the document is) 9

10 Energy renovation of buildings and 4th DH Is that a good idea? + Yes, because: Renewable energy sources can be used directly... or in combination with large heat storage. A flexible system suitable for all kinds of energy ("Smart Grid") Waste heat from cogeneration, waste incineration and industrial processes Solar, biomass, wind, geothermal, heat pumps, etc. can be used Good economics of an integrated energy system with electricity and heat Security of supply Easy and cheap to heat consumers 10

11 4th Generation DH Thank You for listening Theodor Møller Moos Tlf

12 Albertslund Syd The district Albertslund South was built in Approximately 2,000 homes are built around a canal On both sides of the main streets are residential areas with either singlestorey atrium houses or two-storey townhouses. 12

13 Lavtemperaturfjernvarme - Energirådgivning 13

14 Energirenovering af bygninger og fremtidens lavtemperaturfjernvarme CASE Albertslund Syd energirenoveringen Baggrund energirenovering og lavtemperaturfjernvarme Hvorfor Fremtidens lavtemperaturfjernvarme Lavtemperaturfjernvarme hvad er det Udfordringerne Samarbejde mellem bygningens ejer, rådgiverne og forsyningsselskabet Fortælle at lavtemperaturfjernvarme er en bæredygtig løsning Keep it simple 14

15 Energirenovering af bygninger og fremtidens lavtemperaturfjernvarme Varmeplan Hovedstaden 2 "Handlemuligheder for en CO2-neutral fjernvarme (CTR, KE og VEKS, 2011) Årlig udledning i tons CO 2 for opvarmning af en standardbolig

16 Energirenovering af bygninger og fremtidens lavtemperaturfjernvarme Vores Energi (Regeringen, 2011) Fossilfri energiforsyning inden 2035 Grøn Energi vejen mod et dansk energisystem uden fossile brændsler (Klimakommissionen, 2010) Energiforbruget til opvarmning af bygninger skal reduceres med 60 % ved bedre isolering Bygninger i byområder skal opvarmes med fjernvarme baseret på biomasse, solvarme, geotermi og varmepumper 16

17 Albertslund Syd 17

18 Albertslund Syd Skoler og institutioner er spredt ud i området, og i den ene ende ligger Albertslund Centrum med butikker og S-bane. Et montagecirkulære, der blev gennemført i 1961, betød, at husene skulle bygges i betonelementer. 18