1 / 15

Dr Per S. Nielsen, Mr. G. Estcourt, Mr. M. Shepherd

Energy demand analysis for small and medium scale heat users in Rotorua aiming at converting existing heating systems to bioenergy. Dr Per S. Nielsen, Mr. G. Estcourt, Mr. M. Shepherd. Acknowledgement. EECA Rotorua Energy Charitable Trust. Introduction.

haroun
Download Presentation

Dr Per S. Nielsen, Mr. G. Estcourt, Mr. M. Shepherd

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Energy demand analysis for small and medium scale heat users in Rotorua aiming at converting existing heating systems to bioenergy Dr Per S. Nielsen, Mr. G. Estcourt, Mr. M. Shepherd

  2. Acknowledgement • EECA • Rotorua Energy Charitable Trust

  3. Introduction • Evaluation of heat demand at school in Rotorua • The driver for us has been to evaluate the long term competitiveness of wood pellet heating systems.

  4. Energy Grade Optimisation

  5. Energy demand at schools • Electricity • Space heating • Water haeting

  6. Space heating profiles • Annual profile • weekly • Daily

  7. Energy use survey on Schools in Rotorua • 27 schools • Primary as well as secondary schools • Interview with each school • Basic energy sue information

  8. Results • 40-45% of energy use is relate4d to space haeting • 45% of the schools use coal as the main fuel source for sapce heating in old buildings • In prefabs electricity is used for heating

  9. Fuels sources at the schools

  10. Heating costs related to type of fuel use

  11. Heating costs per student

  12. regression kWh/year

  13. Energy PRO evaluation

  14. Conclusions • 45% of the schools have a coal boiler, which heats the part of the school (more than 20 years old). • In new buildings electricity heaters are the preferred solution. • On fuel costs alone, a wood pellet cost of 6c/kWh will be competitive with the school on electricity and electricity/coal and comparable to natural gas, but not competitive to the schools using coal.

  15. Acknowledgement • EECA • Rotorua Energy Charitable Trust

More Related