Modelling Case Study of Compact Combination Hybrids as Low Disruption Decarbonised Heat

Transitioning from predominantly natural gas domestic heating to low carbon is one of the major challenges UK’s net zero decarbonisation pathway. Compact wall-hung combination boilers are dominant appliance and continue be installed as a rate over 1.5 million per year, compared less than 50 k year for Heat Pumps. The disparity persists despite repeated Government support in form Renewable Incentive Green Homes Grant. hybrid appliances offer technology solution similar current boiler terms size performance, which could attractive consumers. However, there currently little knowledge emissions savings that achieved practice by compact appliances. This research systematically analyses real world high frequency data evaluate potential such make while emulating operation. By utilising diagnostic boilers, disaggregated (hot water heating) demand mapped onto models determine energy emission impact. Exploration relative power output HP components modelled provides insight into appropriate specification hybrids can deliver heat service maximising savings. analysis shows with moderately sized HPs significantly contribute homes considered study. Considerable disruption avoided retrofit due physical proposed pump ability system operate existing emitter network.