Power systems for dairy sheds : an investigation into the right mix of energy efficiency, load shifting and energy supply technologies : submitted as partial fulfilment of a Masters of Technology endorsed in Energy Management

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dc.contributor.authorMarshall-Tate, Hugh
dc.date.accessioned2018-06-13T03:37:52Z
dc.date.available2018-06-13T03:37:52Z
dc.date.issued2017
dc.description.abstractThis study investigated the potential for using stand-alone power systems for dairy milking sheds in New Zealand. The study was in two parts:  designing a typical load profile for a dairy shed and evaluating changes that could be made to the dairy shed to improve energy efficiency or shift load, using a mechanistic modelling approach.  using the optimisation modelling tool HOMER Pro to find the best configuration of power system, energy efficiency and/or load shifting improvements of a solar-diesel hybrid power system and a solar-diesel-biogas hybrid power system. The study found that milk vat insulation, variable speed drives and generator heat recovery were good investments to reduce power system costs. The high capital cost of ice banks made them less attractive for herds less than 370 cows. Superheat heat pumps and biogas systems were poor investments and increased costs in most cases when compared with the base scenario. While there was variation within the regions, overall the optimal system, when sensitivity scenarios were accounted for, was found to be similar between the three regions studied with the Bay of Plenty having the lowest overall costs followed by Taranaki and Manawatu. Sensitivity scenarios showed bias against deferrable loads such as ice bank refrigeration systems, hot water storage systems and the pumping of effluent. Diesel prices had a greater effect where the renewable fraction was low. Increasing diesel prices resulted in larger PV arrays and batteries.en_US
dc.identifier.urihttp://hdl.handle.net/10179/13433
dc.language.isoenen_US
dc.publisherMassey Universityen_US
dc.rightsThe Authoren_US
dc.subjectMilking parlorsen_US
dc.subjectEnergy consumptionen_US
dc.subjectRemote area power supply systemsen_US
dc.subjectHybrid power systemsen_US
dc.subjectComputer simulationen_US
dc.subjectNew Zealanden_US
dc.subjectResearch Subject Categories::TECHNOLOGY::Electrical engineering, electronics and photonics::Electric power engineeringen_US
dc.titlePower systems for dairy sheds : an investigation into the right mix of energy efficiency, load shifting and energy supply technologies : submitted as partial fulfilment of a Masters of Technology endorsed in Energy Managementen_US
dc.typeThesisen_US
massey.contributor.authorMarshall-Tate, Hugh
thesis.degree.disciplineEnergy Managementen_US
thesis.degree.grantorMassey Universityen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Technology (MTech)en_US
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