Earth Notes: General Bibliography (ESC2023interim)

• [ESC2023interim] UK Energy Systems Catapult Electrification of Heat: Interim Insights from Heat Pump Performance Data (accessed 2023-03-20), UK Energy Systems Catapult, 2023-03 (report) (BibTeX).
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  [Quote: "The median Seasonal Performance Factors (SPFs) observed in Air Source Heat Pumps (ASHPs) have increased significantly since RHPP (Renewable Heat Premium Payment scheme) [2] (not accounting for weather variations): Median ASHP SPFH4 = 2.80 (vs 2.44 in RHPP); IQR = [2.53, 3.09]; n=291" Quote: "ASHPs capable of operating at high temperatures (>65°C flow) are observed to operate at a similar SPF to low temperature ASHPs." Quote: "Home age and household income do not have a statistically significant impact on the observed SPF in this study." Quote: "... variation in performance between heat pump installations remains high (and difficult to explain), which suggests that progress is still required on improving the quality and consistency of heat pump designs and installations to support a large-scale rollout of heat pumps in existing homes and deliver positive energy, carbon, and consumer outcomes." Quote: "Median ASHP efficiency fell to 2.44 on the coldest day..." Quote: "Heat pumps in hybrid systems were typically used to meet 32-50% of the space heating demand (median 39%)."]