Post on 17-Dec-2015
ČVUT v PrazeFakulta stavební
Katedra technických zařízení budov
ČVUT v PrazeFakulta stavební
Katedra technických zařízení budov
Building Services Building Services Systems 20Systems 20
Building Services Building Services Systems 20Systems 20
Renewable heat Renewable heat sourcessources I I
Renewable heat Renewable heat sourcessources I I
Renewable heat sourcesRenewable heat sources Solar EnergySolar Energy
Passive SystemsPassive Systems solar windowsolar window greenhousegreenhouse accumulation wallaccumulation wall
Renewable heat sourcesRenewable heat sources Solar architectureSolar architecture
location in the countrylocation in the country building planbuilding plan thermal insulationthermal insulation balanced accumulation of the structurebalanced accumulation of the structure additional heating systemadditional heating system minimizing of heat gains in summer by minimizing of heat gains in summer by
shadingshading
Renewable heat sourcesRenewable heat sources Active solar systemsActive solar systems
water, air collectorswater, air collectors photovoltaics cellsphotovoltaics cells
Renewable heat sourcesRenewable heat sourcesGeothermal energy - Heat Geothermal energy - Heat
pumpspumps Evaporator, compressor, Evaporator, compressor,
condenser, reducing valvecondenser, reducing valve EvaporatorEvaporator
air, water, soilair, water, soil CondensatorCondensator
low temperature heating, low temperature heating, hot water, swimming poolhot water, swimming pool
Efficiency - Efficiency - OutputOutput//Input= avg.2,4Input= avg.2,4
http://www.geoexchange.org/frames/case_studies.htm
Energy of environment
Utilisation: heating, hot water
Compressor
Medium vapour
Compressed hot vapour
Liquid mediumCooled medium
Evaporator
Condenser
Reducing
valve
Combined heat and Combined heat and power generation (CHP)power generation (CHP)
gas engine with gas engine with el.power generatorel.power generator
cooling of the engine cooling of the engine is the heat sourceis the heat source
output e.g. 42 kW output e.g. 42 kW heat, 25 kW electricheat, 25 kW electric
Fuel CellsFuel CellsIn principle, a fuel cell operates like In principle, a fuel cell operates like
a battery. Unlike a battery, a fuel a battery. Unlike a battery, a fuel cell does not run down or require cell does not run down or require recharging. It will produce recharging. It will produce energy in the form of electricity energy in the form of electricity and heat as long as fuel is and heat as long as fuel is supplied.supplied.
A fuel cell consists of two A fuel cell consists of two electrodes sandwiched around electrodes sandwiched around an electrolyte. Oxygen passes an electrolyte. Oxygen passes over one electrode and hydrogen over one electrode and hydrogen over the other, generating over the other, generating electricity, water and heat.electricity, water and heat.
http://www.esru.strath.ac.uk/http://www.esru.strath.ac.uk/EandE/Web_sites/00-01/EandE/Web_sites/00-01/fuel_cells/fuel_cells/