Energy Management :: 2007/2008

Tamanho: px

Começar a partir da página:

Download "Energy Management :: 2007/2008"

Victorio Maranhão
5 Há anos
Visualizações:

1 :: 2007/2008 Class # 8 Energy Efficiency in Buildings Prof. Paulo Ferrão ferrao@ist.utl.pt Carlos Soares, MSc c.soares@enerone.eu

2 Energy systems Energy use in buildings Air conditioning; Ventilation; Artificial lighting; Lifts and escalators; Appliances; Special uses, e. g, data processing facilities; Other. Class # 08 :: Energy efficiency in buildings Slide 2 of 53

3 Energy conversion Energy conversion for uses in buildings Energy conversion Energy distribution Energy transfer Energy storage Class # 08 :: Energy efficiency in buildings Slide 3 of 53

4 Energy efficiency strategies Reduce energy demand Design optimization Promote energy efficiency Energy use Best practice; Energy oriented regulations; Envelope performance; Concept performance; Systems integration via BMS; Whole building approach. Renewables; Cogeneration; Conversion efficiency; Recovery; Free cooling; Low-E systems; Systems maintenance. Class # 08 :: Energy efficiency in buildings Slide 4 of 53

Demand Design optimization Best practice and

performance Systems integration & whole building

Arrefecimento Ligação ao Chiller de Absorção

Água da Rede Bomba Bomba Ligação ao Colector

C DAQS DAQS PC Pilha de Combustível (305 kwe)

Tensão Exportação = ~ Electricidade Produzida

Chiller de Absorção 190 kw Ligação ao Colector de

da Rede One day all buildings will be green.

5 Demand Design optimization Best practice and energy oriented Regulations Envelope & concept performance Systems integration & whole building approach Arrefecedor Seco (230 kw) Torre de Arrefecimento Ligação ao Chiller de Absorção Painéis Solares Térmicos (~90 m 2 ) P C Bomba Água da Rede Bomba Bomba Ligação ao Colector Existente Consumo AQS Bomba Gás Natural m 3 (n) P C DAQS DAQS PC Pilha de Combustível (305 kwe) Ligação ao Colector Existente Bomba Rede de Média Tensão Exportação = ~ Electricidade Produzida Autoconsumo Ligação à Torre de Arrefecimento Chiller de Absorção 190 kw Ligação ao Colector de Água Quente Ligação ao Colector de Água Fria Água da Rede One day all buildings will be green. Let us save energy for Portugal! Class # 08 :: Energy efficiency in buildings Slide 5 of 53

6 Demand Design optimization Annual Energy Comsumption (Estimated) Htg-Est. Displ 24h Clg-Est. Displ 24h Htg-Mix. 24h Reg. F. Air Clg-Mix 24h Reg. F. Air Htg-Mix 24h Inc. F. Air Clg-Mix 24 h Inc. F. Air. [MWh] Jan Feb Mar Apr Mai Jun Jul Aug Sep Oct Nov Dec Month Class # 08 :: Energy efficiency in buildings Slide 6 of 53

7 Consumption Energy use Renewables & Cogeneration Conversion efficiency Recovery, Free cooling, LowE & Systems maintenance Class # 08 :: Energy efficiency in buildings Slide 7 of 53

8 Consumption Cogeneration = Heat + Electricity Class # 08 :: Energy efficiency in buildings Slide 8 of 53

9 Cogeneration : Local use + Electricity Export to the Grid Consumption Natural Gas LWV = 10.5 /m 3 (n) Exhaust Backup Boiler ηt = 90 % Recovery Boiler ηt = 90 % Hot water (or steam) for space heating, Process water or Domestic hot water Heat production Absorption Chiller COP = 1.1 Gas turbine ηt = 55 %, ηe ~ 30 % Electricity production Local energy consumption (auxilliaries) Compression Chiller COP = 5.0 Chilled water for space cooling or process cooling Electrical energy to the grid export Class # 08 :: Energy efficiency in buildings Slide 9 of 53

10 Cogeneration plant image Class # 08 :: Energy efficiency in buildings Slide 10 of 53

11 Matching thermal and electrical demands Diagrama de carga de arrefecimento - Verão Carga Frio Acumulação CAbsorção CCompressão Carga [kw] Hora 5000 Diagrama de carga de aquecimento - Verão Carga Calor Acum. Calor Rec. Calor Caldeira Carga [kw] Hora Class # 08 :: Energy efficiency in buildings Slide 11 of 53

12 Matching thermal and electrical demands Diagrama de cargas de arrefecimento - Inverno Carga Frio Acumulação CAbsorção CCompressão Cargas Hora Diagrama de carga de aquecimento - Inverno Carga Calor Acum. Calor Rec. Calor Caldeira Carga [kw] Hora Class # 08 :: Energy efficiency in buildings Slide 12 of 53

13 Cogeneration reference figures Cogeneration technologies Item Unit Technology CI Engine Micro Turbine Gas Turbine Application range [kwe] Estimated cost [ /kwe] 250 ~ ~ ~ 750 Footprint [m 2 /kwe] 0.02 ~ ~ ~ 0.06 Electrical efficiency full load [%] Electrical efficiency half load [%] Heat availability [% of input] F G Effluent temperature [ºC] Maintenance cost [ /kwe] 0.006~ ~ ~0.007 Class # 08 :: Energy efficiency in buildings Slide 13 of 53

14 Cogeneration in Portugal Installed power evolution Total installed power around 1200 MWe 13 % of electricity generation Natural gas becoming the most important energy source Source: Cogen Portugal Class # 08 :: Energy efficiency in buildings Slide 14 of 53

15 Energy efficiency index IEE [kgoe/m 2.year] National regulation Building type Existing Buildings New Buildings Hypermarket Large shop Supermarket Shopping center Small shop Restaurants Hotel (>= 4 *) (electrical) = 0.29 kgoe 1 (liquid or gas combustible) = kgoe Source: DL 79/2006, 4 th April Class # 08 :: Energy efficiency in buildings Slide 15 of 53

16 Energy use world wide Energy intensity Class # 08 :: Energy efficiency in buildings Slide 16 of 53

17 Energy use world wide Energy intensity Class # 08 :: Energy efficiency in buildings Slide 17 of 53

18 Sustainable cooling Class # 08 :: Energy efficiency in buildings Slide 18 of 53

Documentos relacionados

Energy Management : 2009/2010

Energy Management : 2009/2010 : 009/010 Class# P3 SGCIE Prof. Miguel Águas miguel.aguas@ist.utl.pt Prof.ª Tânia Sousa taniasousa@ist.utl.pt Problem Production of refined vegetable oil The aim is to develop an analysis of Sankey to