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About This Item
Full Description
— three design conditions, each of them being characterized by a design temperature which represents the lowest temperature that can occur in that design condition;
— three water temperature distribution regimes, namely “temperature application” in the text. This document also provides a full description of three heating seasons that can be used with the associated design conditions.
Document History
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ISO 21978:2023
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Air to water heat pumps - Testing and rating at part load conditions and calculation of seasonal coefficient of performance for space heating- Most Recent
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ISO 21978:2021
Heat pump water heater - Testing and rating at part load conditions and calculation of seasonal coefficient of performance for space heating- Historical Version