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Resource efficiency with useful heat or electricity: Difference between revisions
Resource efficiency with useful heat or electricity (view source)
Revision as of 15:33, 17 September 2022
, 15:33, 17 September 2022→Relative energy demand for heating with combinations of electricity production and electric heating/heat pumps
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'''Bold''' is the dividing line where the combination gives a higher efficiency than the theoretical maximum for combustion alone or heat capture for heating (100%). | '''Bold''' is the dividing line where the combination gives a higher efficiency than the theoretical maximum for combustion alone or heat capture for heating (100%). | ||
====Conclusions ==== | |||
*[[Resistive electric heating]] corresponds to COP 1. It gives that it is more efficient to burn the fuel directly for heating than resistive electric heating. | |||
*For the combination gas combined cycle power plant and heat pump with heat factor (COP) 4, the total energy requirement is reduced to 42% compared to direct combustion with a theoretical 100% efficiency. | |||
*Conversion from gas heating to heat pumps ([[SCOP]] 4) is very efficient. | |||
*Conversion from coal burning to heat pumps ([[SCOP]] 4) with coal condensate is also effective. | |||
*Thermal power has an electrical efficiency of up to 60%. An efficient combustion boiler up to approx. 90%. Local heating as peak heating for heat pumps, (wood, oil, gas, etc.) then results in lower total energy use and carbon dioxide emissions. | |||
*By combining high-efficiency power units with heat pumps with a high heating factor, the fuel requirement can be reduced. | |||
===Electric car compared to ICE petrol car === | ===Electric car compared to ICE petrol car === | ||